Thong tin khoa hpc cong nghe m6 w CAC GIAI PHAP KY THUAT DAP UNG SAN LlfDNG, NANG CAO HIEU QUA VA Mlh; DO AN T O A N CAC M 6 Ld THIEN LdN KHI XUONG SAU In recent years, coal mining output in Vinacomin[.]
Trang 1w CAC GIAI PHAP KY THUAT DAP UNG SAN LlfDNG, NANG CAO HIEU QUA
VA Mlh; DO AN T O A N C A C M 6 Ld THIEN LdN KHI XUONG SAU
In recent years, coal mining output in Vinacomin has
rapidly increased According to the development plan, the
annual coal output in 2015 will teach to 60 + 65 million tons,
in 2020 will be 70 + 75 miilion tons and in 2025 will be more
than 80 million tons In which, the underground coal output will
gradually increase and accounting for 55 + 70%, white the
open pit coal output wilt decrease and accounting for
30% + 45% Besides the increase of the coal output the
increase of the labor safety and production efficiency is the
essential task in the sustainabie development of the coat
sector in Vietnam
ThS BO NGOC TU'd'C ThS DLraNG TRUNG JAM
KS NGUY6N VAN BdC
Viin Khoa hoc COng nghi Md-Vinacomin
Nhung n i m qua, s i n Igpng khai thic cua
T i p doan Cdng nghipp Than - Khoing s i n Vidt
Nam ting trudng vdi t i c dp nhanh, td 27,5 tridg
t i n n i m 2004 len tdi 44,01 tridg t i n nam 2010
(tuong dng tang 1,6 iln) Theo k l hoaeh phit
triin, d i n nam 2015, s i n lupng than dpt 60+65
tridu t i n , nam 2020 dpt 70+75 tripu t i n , n i m
2025 dat trdn 80 tripu t i n Trong dd, san lupng
than khai thic ham Id tang dan v i chiem khoing
56+70%, san lupng than Id thien se giim dan va
dpt t d 30+45% Ngoii tang s i n lupng khai thic,
vipe ning eao an t o i n lao dpng, hipu q g i s i n
xgIt, giam ton thit t i i nguydn cung l i mgc tieu
d p thllt trang Ip trinh phit triin b i n vung cua
nganh Than Do vay, vipe nghidn cdu c i c giai
phap dap dng s i n lupng, nang cao hipg qua va
mdc dd an t o i n eie md Ip thidn Idn khi xuing
sau l i r i t c i n thiet
1 D$c aim cac md than /$ thien Vift Nam
khi xuong siu
a Bac diim diiu kidn tw nhidn, dja chit cdng
trinh, dia chat thOy vin
Khoing sing than Vipt Nam ndi ehung d i g
od d i e dilm phin b i "trdn sudn nui - dudi
moong s i g " v i dgpc phin Iopi thinh c i c dpng
nhu sag: c i c via thoai cd gdc e l m p < 20°; c i c
via than dpng Scm t i v i d i e nghidng (20+40°);
eic via than dpng ddng tg hoin chinh (clu tao
ldng Ohio); c i c via than dpng ddng tg khdng
hoan chinh (nip l i i , n i p Idm)
C i c md than ip thien Idn Cao Son, Cpc S i g ,
Ddo Nai, T i y Nam B i M i i od dilg kidn dja chit
thgdc Iopi phdc tap Nham thpch cie md gdm chO y l g eat kit, bpt kit, egdi, spn kit cd hp s i kidn c l Idn f = 4+14, Dung trpng thay d i i td 1,63+1,97g/em' Trpng lupng t h l tich thay dii td 2,5+2,75g/cm'
Cie md dlu.cd lug lupng nude ngim va nude mpt Idn, thdi gian mua trung binh 6 thang/nam Dja chit kiln tpo eua eic md phdc tap, gdm nhiiu phay p h i , ddt giy
Hp thing nude mpt chi t i n tpi trong md d nhdng trpn mua v i dupe tieu thoit t g nhidn theo muong ranh ehay ra cic sdng sudi g i n khu vgc md
Nude ngim nam trong tang phu Dp td (Q), ting chda than (T3n-r) v i trong eie ddi ddt gay Ting chda nude ngim trong tram tich (T3n-r)
ed mgc nu(K dao dpng theo mda, v i o mua mua
mgc nude cao hon mua khd t d 2+4m
b Bic dlim diiu kidn hinh hi/c cOa cic md
Bpc dilm v l dilg kidn hinh hoc cCia eie md than Ip thidn l i c i c md d i u khai thie xuing siu, bidn gidi tren mit dupe md rdng C i c md chia thinh nhiiu khu vgc khai thie, c i c md Id thidn nhu: Cao Son, Coo S i u , Bdo Nai cd kich thude khai trudng Idn d i m bao c i c thdng s l d l i p dgng c i c edng nghd khai thic tidn tlln vdi ding
bp thllt bj (BBTB) hidn dpi
D i e dilm hinh hpe cda md Id thien l i mpt trong nhdng y i u td cd lidn qgan chit che vdi cudng dd phit triin edng trinh md Theo cIg tpo dja chit v i dja hinh, hIg hit c i e md Id thidn Idn vDng Qging Ninh d i g ed dpng "trdn sudn niJi
Trang 2W'
dudi moong sig", khai thic dudi mdo thoit
nude tg chiy, hd s i bde thdi gian sd Idn, cd noi
tdi 7+14 m'/tln Chilu dii tuyin cdng tio trung
blnh theo chilu siu eua cdc md Id thidn thay dii
Idn nhu: Bdo Nai td 200+1200m, Cpc Siu td
300+1200 m S i ting edng tie hopt ddng ding
thdi se ting Ting hpp die diim kich thude hinh
hpc cic md dgpc thl hidn trong bing 1
c Phuang hirdng khai thic cOa cic md
Theo Ting »» dd Phit trtin nginh glal dopn
2006+2015 cd xdt triin vong din 2025 d i dupe
phd duydt v i cic Dp i n dig tu md rdng ning
cdng suit cua cic md Cao Son, Cpc Sig, Bdo
Nai Tiy Nam O i Mdi, nhu clu v l lidu thg than
Irong nuPc v i xuit khiu rit Idn Din nim 201S
sin lupng md Id ihidn vin chilm khoing 50%,
sau dd cAc md than Id thidn vung Hdn Gai sd kit
thuc khai thdc chuyin sang khai thic him Id khi
dd sin lup'ng than khai Ihdc Id thidn sd giim
xi/dng dudi 50%
Theo dvr bAo Irdn mi sin lup«g khal thic
man 10 thidn hing nim Irung blnh phii dpt td
10.5 24 5 tn»u tin khii lirpmg dit bdc td
105-240 tn»u m> Vdi diiu kidn khai thic khd
kh4n nhir h4n nay c4c md Id thidn ngiy cing
• -3 ttiAc xuing siu diiu kidn dia chil phdc lap
til nguydn din can k4( ddi hdi c6 chiln l i w : sd
dung v i tin dung tilt kidm nguin tii nguyin
nAy
2 e t c , 6 - id anh hi/dng din sin lupng md
14 I M n • '•' khai thic xuing siu
S i n tirong cua mdt m i 10 thidn dupe qgylt
^inh b ^ nhilu yAu l i I I » / phii hop gida yiu t i
]\j nhidnky thuit dilu kiOn kmh t l Trong dd
die ^im cua cic yiu t i tp nhiOn l i yiu t i diu
Bittg 1 Bic ^im itich thude hinh hoc mdt sd md
tidn inh hgdng din vide Iga chpn cdng i khai thic, trinh tg khai thic, hd thing khai M i nhdng yiu t i niy cd inh hudng t^ri din sin lupng khai thie eda md [11
Khii lupng cCia md Id thidn bao gim lupng than At v i khii dit d i Ad Sin lu ehung eho than v i dit d i gpi l i sin lupng khii lupng md (Am) Sin lupng md Id thidi khal thic xuing siu theo dllu kidn k^ ti dgpc xic dinh theo bilu thdc sau:
A, - V, s, •/ IzJ^ , tin/nim (1)
I - r Trong dd:
Si- tilt didn ngang cua than trdn cic ting toin, m';
r- khii lupng Ihl tich cua than, t/m";
Km v i r- h | s i lin Ihit v i lim bin than,»
Khii lupng dit bdc cua md Id thidn phg Ihi vio h | s l bdc dit d i sin xuit ciJa md:
Aa = KIAq, m'/nim (2)
Td dd, la c6 sin li/png Ilnh theo khii lire
m d i i Am=Aq(; r Kl), m'/nim (3) Vdi: Kl- hd s i bdc thdi gian, m'A
Tic dd xuing siu dirpc xic djnh theo bi Ihdc:
Vj = ^ — m/nim (4)
'c
Trong d i : X- hd s i phin mua: A.= (12-Tn)/12, vdlT.I thdi gian diy md lly ldi trong nim khdng da siu dupe, thing;
a Ihiin siu i
Wchido Hu kdl muc
_2J
3I
Criilu cao t)d md
Khai ih*c dudn miie Ihoil nude Iv ch
4 1 Khdi liAmg than diKM mde tp chiy
5 IChllu dtt tuvin cdna Uc:
1 Ldn nhit
1 Nhd nhit
s | S i t i n g khailh«c
jOon v/l Cao San
1 m 1 -325
1 m 1 450
* J m , 400 10T 82,8
1 1 (76,5%)
m 2500
f r ^ 1 Tina
800
32 1
1 Bio Hal
-345 1
450
200 7,12 (33,34%) 1
1200 1
200 1 20*29 1
CocSiu
-330
510
285 38,63 (85%)
1000 I
300
37 1
Tiy mm DiUil
-200 450'^
400 I P
82,r' (76,5%)
-J
800
28 m
Trang 3w
h- Chilu cao t i n g , m;
Tc-Thdi gian chu ky chuin b| t i n g mdi, nam
B i i vdi m i i khoing s i n g nhit djnh thl g i i trj
f^,j\ va r nhin chung khdng thay d i i nhilu vdi
mdi cdng nghd khai thic B i i vdi q u i trinh thllt
ke san lupng md cho mdt giai dopn n i o dd ndn
lly kha nang s i n lupng VsK.Sq nhd nhit d l dam
bao cho md dpt dupe san lupng ludn i n djnh
Irong thdi gian khai thic S i n lupng eua md Id
thidn chju anh hudng bdi c i c y l g t i nhu sau:
a Anh huang cua cic yiu to tw nhidn
Cic y i u t i t g nhien anh hudng d i n k h i ning
sin lupng cda md Ip thien bao g i m : s i n trang
cua via (ehilu diy, gdc die, s i ldp d i kpp), d i e
dilm dia chit, dja chit edng trinh, dja chit thuy
van, dllu kipn dja hinh, ehilu d i y t i n g d i t phu
v i diiu kidn khi h i u khu md Khi chilu d i y via
than Idn v i chilu day t i n g d i t phu khdng Idn
lam thi kha nang tang san lupng cua cic md dd
thge hien v i ngupc Ipi
b Anh huang cua cic yiu td ky thuat
Cae yeu to ky thupt anh hudng d i n s i n
lupng md bao gom:
- Cae thdng s i hinh hpc md cd lidn quan chat
che vdi cirdng dp tien trien cdng trinh md
- Anh hudng ciJa he thing khai thie den san
lupng md bidu hidu rd net nhit thdng qua vide
ap dgng edng nghp khIg
- Anh hudng eiJa cdng nghp van tai den san
lupng md: hien tpi cung nhu eic n i m tdi, van
til d i t da va do thai d eac md Id thidn xuing sau
cua T i p doin se gap nhieu khd khan Cung dp
van t i i ciJa c i c md se tang tdi 4+7,0km, chieu
cao ning tai t d 350+500m Khii lupng dit bde
td 6+70 tripu m'/nam, than t d 0,5+4,5 tripg
tan/nam Vdi thgc trang tren diy, mpt s i md n i g
vin ap dgng van tai d td don thuin thi chi phi
van tai tang dang ke, d i n d i n giam hipg qua
khai thic va han ehe kha nang md rpng qgy md
khai thae cda eac md K i t qga nghien cdu cho
ihly, d l hoan thanh san lupng mdt mo nhit * n h
;hi c i c loai hinh v i n tai khie nhag ed ting mde
lag t g khac nhag, g i i thinh vpn tai mpt m' d i t
I i cung khac nhau
- Anh hudng cua ding bp thiit bj (BBTB) den
ian lupng md: BBTB khdng chi anh hgdng giin
ilp d i n tdi c i c thdng s i eua hp thing md via,
cdng nghd khai thie, eic chi tieu kinh td-kj thupt cua md, v.v m i cdn i n h hudng trge tllp tdi ning sg|t ciJa c i e thllt bj tham gia s i n xuit cung nhu cOa e i d i y chuyin s i n xuit trdn md
B i c bidt i n h hudng trgc tiip d i n s i n lupng md,
g i y i n h hgdng d i n k l hopch s i n xuit eua doanh nghiep md v i quy hopch eua N h i nude Mpt md Id thidn dupe eoi l i hoat dpng cd hipu
q u i v l m i l ky thudt ehi khi cd sg t i i ug v l kich thgdc, edng sgIt v i sg phii hpp ega eic thllt
bj sd dgng trong ding bp
c Anh huang cua cic yiu id kinh ti din san lirang md
Khi x i c djnh s i n lupng md Id thidn c i n phai qgan tam d i n cic y i u t i kinh t l nhim ning cao hipg qua s i n xuit v i dpt dupe Ipi nhupn eao nhit trong q u i trinh t i n tpi cua md
San lupng t i i da cd the cua md Id thien dupe xac djnh trdn co sd eic ydu t i ky thupt khdng phii bao gid cung l i s i n lupng hpp ly v i mang lai hidu qua kinh te eao eho md [1]
3 Cic giii phip khal thic chu yiu
Vdi dpc diem, dieu kien khai thac d cac md
Id thidn Idn vung C i m Phi, d l hoin thanh san luong Idn nhu theo quy hoach, d l xuit cie giii phip nham dap dng san lupng, nang eao hipg qua va mdc dd an loan cac md than ip thien cdng suit Idn khi khai thic xuing siu:
* Bien gidi khai trirang:
Hidn nay, c i c md than Id thidn Idn Vipt Nam
da va dang d i n tipm cpn d i n ranh gidi khai thac culi cCing theo thllt k l ca tren mat lan dudi sau Cac md vCing C i m Phi hipn nay dang tien hanh
md rpng bidn gidi tren mat, dudi sau nham khai thae t i i da tru lupng than bing phucng phip khai thic ip thidn Be d i m bao eho edng t i c md rpng va xuing s i u , c i c md ein ed nhdng giai phip eg the nhu: v i n d l i n dinh bd md, thoit nude v i thdng gid md Cac chi tieu bidn gidi khai tnrdng eic md Id thien vdng Cim Phi t h l hipn trong bang 2
* Vi trinh t{rkbai thic:
Tang s i n lupng md Cpc S i u ldn 4 tripu t i n than nguydn khai/nim v i kit thiic khai thie nam
2028, md Cao Son gid nguyen san lupng 5 tripu
t i n than nggyen khai/nim va k i t thCic khai thac nam 2038, md Bdo Nai trong giai doan 3 md hoat ddng se giam san Igpng xuing 1,5 tripu t i n
Trang 4W'
dudi moong siu", khai thic dudi mdc thoit
nude tg chiy, hd s i bdc thdi gian se Idn, ed noi
tdi 7+14 m'/tln Chilg d i i tgyin cdng t i c trgng
blnh theo chilu s i u ciJa c i e md Id thidn thay d i i
Idn nhu: Bdo Nai td 200+1200m, Cpc S i u t d
300+1200 m s i t i n g cdng t i c hoat ddng ding
thdi se ting Ting hpp die dilm kich thude hinh
hpc cie md dupe t h l hidn trong bing 1
c Phuang hudng khai thic cua cic md
Theo Ting so d i Phit triin nginh glal dopn
2006+2015 cd xdt triin vong d i n 2025 d i dupe
phd duydt v i eic Dg i n d i g t u md ring ning
cdng sgIt ega eic md Cao Son, Cpc S i u , Ddo
Nai, Tiy Nam D i M i i , nhu c l u v l tidu thg than
trong nude v i xuit khiu rit Idn D i n n i m 2015
sin lupng md Id thidn v i n chilm khoang 50%,
sag dd cie md than Id thidn vdng Hdn Gai sd k i t
thuc khai thie chgyin sang khai thic h i m Id khi
dd s i n lupng than khai thic Id thidn sd glim
xudng dudi 50%
Theo dg b i o trdn thl san lupng khai thic
than Ip thien hang nam trung blnh phii dat t d
10,5+24,6 tridu t i n , khii Igpng d i t b i c t d
105+240 tripu m' Vdi dllu kidn khai thic khd
khin nhu hipn nay, eac mo Id thien ngiy cing
khai thac xuing s i u , dllu kipn dja chit phdc tap,
t i i nguydn d i n cpn kipt, ddi hdi cd chien lupe su
dgng v i tan dgng tiet kipm nggdn t i i nguyen
niy
2 Cac y i u t i i n h hudng d i n s i n Igpng md
Ip thien khi khai thic xuing sau
S i n lupng cua mdt md Id thien dupe quyit
dinh bdi nhilu y i u t i , la sg phg hpp gida y i u t i
t g nhien-ky thgit, dieu kidn kinh t l Trong dd,
dpc diem cda eac y i u t i tg nhidn la y l g td d i g
Bing 1 Bic diim kich thude hinh hoc mit sd md
tidn i n h hudng d i n vipe Ipa chpn edng nghd khai thie, trinh t g khai thic, hd thing khai thic, M i nhdng y l g t i n i y cd i n h hudng trgctidp
d i n s i n lupng khai t h i e cOa m i (1]
Khii lupng cua md Id thidn bao g i m s i n Igpng than At v i khii d i t d i Ad S i n lupng Chung cho than v i d i t d i gpi l i s i n Igpng theo khii lupng md (Am) S i n lupng md Id thidn khi khai thic xuing s i u theo d l l u kidn kf thuit dupe x i c djnh theo b i l u thdc sag:
A - - v : , T ' " ' ^ , t i n / n i m (1) Trong dd:
Sr tilt diln ngang ciJa than trdn c i e t i n g tinh toin, m^;
y- khii lupng t h l tich cua than, t/m';
Km v i r- hd s i t i n thit v i l i m b i n than, % Khii lupng d i t bdc cua md Id thidn phg thude
v i o hd s i bdc d i t d i s i n x u i t cua md:
Aa = Kt.Aq, m'/nim (2)
Td dd, ta cd san Igpng tinh theo khii lupng
md li:
Am = Aq( — + Ki), m'/nim (3)
r Vdi: Kt- hp s i bdc thdi gian, m'/t
T i c dd xuing s i u dupe x i c djnh theo bilu thdc:
Vs=A.—, m/nim (4)
Trong dd:
> - hd s i phin mCia k - (12-Tn)/12, vdi Tn la
thdi gian d i y md l l y ldi trong n i m khdng dio
s i u dupe, thing;
li thiin siu
TT
1
?
3
4
5
6
Chi tiiu
Chilu sdu kit thuc
Chieu cao bd md
Khai thdc dirdl mdc thoit nude tp chav
Khoi lu-png than du-dl mdc tp chiy
Chieu ddi tuvdn cdng tdc:
Ldn nhat
Nhd nhit
So ting khai thdc
Do-n v;
m
m
m 10'T
m
m Ting
Cao Son -326
460
400 82,8 (76,6%)
2600
800
32
Bdo Nai
-345
460
200 7,12 (33,34%)
1200
200 20*29
Cpc S i u -330
510
285 38,63 (85%)
1000
300
37
Tiy Nam BiMil
-200
450
400 82,8 (76.5%)
2500
800
28
1
i
Trang 5md
w
h- Chilu cao ting, m;
Tc-Thdi gian chu k^ chuin bj t i n g mdi, nim
B i i vdi m i i khoing sing nhit djnh thl g i i tr|
Yq, n v i r nhin chung khdng thay d i i nhilu vdi
mdi cdng nghp khai thic D i i vdi q u i trinh thllt
k l sin Igpng md eho mdt giai dopn n i o dd ndn
lay kha ning s i n lupng VsK.Sq nhd nhit d l d i m
bao cho md dpt dgpc s i n lupng ludn i n djnh
trong thdi gian khai thic San lupng eua md Id
thien chiu anh hudng bdi eie y i u t i nhu sau:
' a Anh huang ctia c i c yiu td tu nhiin
Cic yiu t i tg nhien anh hudng d i n kha ning
san lupng eua md Ip thidn bao g i m : san trpng
cda via (ehilu diy, gdc d i e , s i Idp d i kpp), die
dilm dja chit, dja chit cdng trinh, dja chit thuy
vin, dllu kipn dja hinh, chilu d i y t i n g d i t phu
v i dllu kidn khi h i u khu md Khi chilu d i y via
than Idn v i chilu day t i n g d i t phu khdng ldn
lam thl khi ning ting s i n lupng cua c i c md dd
thpc hipn v i ngupe Ipi
b Anh huang cOa cic yiu td ky thuat
Cic yiu t i ky thupt anh hudng d i n san
lupng md bao gim:
- Cic thdng s i hinh hpc md cd lidn quan chpt
che vdi cudng dp tlln Iriln edng trinh md
-Anh hudng eua hp thing khai thic d i n san
lupng md bilu hipu rd net nhit thdng qua vide
ap dung cdng nghp khiu
- Anh hudng eua edng nghe van tai d i n s i n
Igpng md: hipn tpi cung nhu cac nam tdi, van
tai dat d i va d i thii d c i e md Id thien xuong sag
cua Tip doin se gap nhilg khd khin Cung dp
van til cua cic md se t i n g tdi 4+7,0km, chilu
cao ning tai t d 350+500m Khii lupng d i t bdc
td 6+70 tridg m'/nim, than t d 0,5+4,5 tridu
tan/nam Vdi thuc trang trdn day, mdt s i md niu
van ap dung van t i i d td don thuin thl ehi phi
van tai tang dang k l , d i n d i n giam hidu qua
khai thac v i han ehi k h i ning md ring qgy md
khai thic cda cic md K i t q u i nghidn cdu cho
thiy, d l hoin thinh san lupng mdt md nhit djnh
thi cac loai hinh van tai khic nhau cd ting mdc
dau tu khic nhau, gia thinh vpn tai mpt m' d i t
di cQng khac nhau
- Anh hudng eua ding bp thllt bj (DBTB) d i n
san lupng md: DBTB khdng chi i n i i hudng giin
tiep din tdi cic thdng s i cua hp thing md via
edng nghd khai thic, c i c chi tidu kinh t l - k j thupt eua md, v.v m i cdn i n h hudng true tllp tdi ning suit ega c i e thllt bj tham gia san xuit eOng nhu cDa c i d i y chuyin s i n xuit trdn md
D i e bilt i n h hudng trgc tllp d i n s i n lupng md,
g i y i n h hudng d i n k l hopch s i n xuit cOa doanh nghidp md v i quy hopch cua N h i nude Mdt md Id thien dupe col l i hoat ddng cd hipu
q u i v l mit kJ thuit chi khi cd sg t i i gg v l kich thude, cdng sgIt v i sg phii hpp cua cac thiet
bj su dgng trong ddng bd
c Anh hudmg cOa cic yiu td kinh ti din san luang md
Khi xac dinh s i n lupng md Id thien ein phii quan t i m d i n cie y i u t i kinh t l nhim nang cao
hidu q u i san xuit v i dpi duac Ipi nhupn eao
nhit trong q u i trinh t i n tai cua md
San lupng t i i da cd t h l cua md Id thidn dupe xac dinh trdn co sd c i c y i u t i ky thuit khdng phai bao gid eung l i s i n lupng hpp ly v i mang lpi hipg qua kinh t l eao eho md [1]
3 Cac giai phap khal thac chu yiu
Vdi d i e dilm, diiu kidn khai thic d cie md
Id thien Idn vCing C i m Phi, d l hoan thinh sin lupng Idn nhu theo qgy hopch, de xgIt cac giai phap nham d i p dng s i n lupng, ning cao hidg qga v i mdc dd an toin c i c md than Id thien cdng sgIt Idn khi khai thic xging siu:
* Biin gidi khai trtrxmg:
Hien nay, eic md than Id thidn Idn Vipt Nam
da v i dang d i n tipm can d i n ranh gidi khai thac cuii cCing theo thiit k l c i tren mat lan dudi sag
C i c md vdng C i m Pha hipn nay dang tlln hinh
md ring bidn gidi trdn mpt, dudi sag nham khai thic t i i da tru lupng than bang phuong phip khai thic Id thien D l dam bao cho cdng tie md rdng v i xuing sau, eac md c i n cd nhdng giii phip eg t h l nhu: v i n d l i n djnh bd md, thoit ngdc v i thdng gid md C i c chi tieg bidn gidi khal trudng eie md Id thidn vung Cim Phi t h l hipn trong bing 2
*Ve trinh ttf khal thic:
Ting san lupng md Cpc S i u len 4 tripu t i n than nguyen khai/nim v i k i t thuc khai thie nam
2028, md Cao Son giu nguydn sin lupng 5 trieu
t i n than nguyen khai/nim v i kit thdc khai thie nam 2038, md Ddo Nai trong giai dopn 3 md hoat ddng sd giim san lupng xuing 1,5 tripu tin
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n
1
2
3
4
5
6
Bing 2 Cic chi tiiu biin gidi khal trudng cic md id thiin vdng Cim Phi
Tin chi tiiu
Kich thude khai tru'dng
C h i l u ddi trung blnh
C h i l u rdng trung blnh
S6 t i n g khai thdc
C h i l u cao b d md
C i t cao ddy md
Trd lupng dja c h i t
Trd lu'png cdng nghidp
Khdi lu'png d i t dd bdc
Hd s6 bdc trung blnh
Bofi
vl
m
m
m
T i n g
m
m
1 0 ' T
1 0 ' T
1 0 ' m ' m'/T
M6 Bio Nai
Toin
bd
3 500 2.600
-345
48 085
52 894 586.1 11,08
Khu via Chlnh
48
720 -346
37 012
40 713 429,6 10,55
Khu Lt>Tri
25
375 +15
398
438 2,14 4,89
Khu Nam LOTd
28
420 -150
10 675
11 743 154,4 13,15
Md C p c S i u
Toin
bd
3 000 2.500
40
605 -330 47.886
52 675 699.5 13,28
Khu Tiy BicTi NganS, Bic phayB
•330 38.212 42.033 495.6 14.90
Nam Quing Lai
-180 8.456 S.302 73,7 7.92
Khu Bdng Nam
-30 1.218 1.340 4,72 3,52
Md Cao
Scm
3450
2120
50
760 -325 94.426
112 367 1-138.1 10.13
T i y Nam
O i M i i
3000
1800
35
370 -220 34,172 39.744 667.6 16.80 than nguyen khai/nim v i k i t thue mupn nhit
vao nam 2047
* Hp thdng khal thic vi dc thdng sd:
HTKT xuing s i u , dpc, mpt (hai) bd edng tic,
cd van t i l , dat d i d i bai thai ngoii v i bai thai
trong vdi vipe i p dgng cdng nghp khai thic vdi
gdc die bd cdng t i c Idn, tgy tdng khg vpc eg
the od the i p dgng HTKT khiu theo Idp ddng v i
d l bd ddng tpm thdi D i o s i u d i y md v i khai
thic than bang MXTLGN, theo cdng nghd d i o
sau k i t hpp tdc la chuin bj t i n g mdi v i khai
thic than theo phin ting, cdn vipe bdc d i t d i
dupe tlln hanh trdn toin bp chilu cao ting
* BBTB dupe Iga chpn phCi hpp vdi quy md
cdng suit cua tung md nhu sau:
- Thiit bi lam tai; Sd dgng m i y khoan xoay
cIg chay dipn tren c i c t i n g khdng ed nggy eo
ngip nude, miy khoan thgy Igo d c i e t i n g dudi
mdc thoat nude tu chay Budng kinh lo khoan
lua chpn phii hpp vdi thdng s i HTKT v i DBTB:
dk=200+300mm
- Cong nghd ni min; S d dgng phuong phip
n i vi sai phi dipn, co gidi hda khiu npp thulc n i
vdi thllt bi chuyen dgng Sd dgng k i t hpp thgic
n i chiu nude v i thuic n i chju nude trong c i c
Id khoan nhieu nude, su dgng thgle n i thudng
trong tgi nylon d i i hoic trong tdj nylon ddng gdi
s i n , trong eie l i khoan it n g i p nude
- Thiit bi xOc bdc; S d dgng m i y xue giu
thuin chay dipn vdi dung tich g i u E = 4,5+15m' xiic d i t d i c i c t i n g It nguy co' ngip nude v i cd nguin didn i n djnh Dung MXTLGN dung tich E=3,5*12m' d l d i o s i u d i y md v i khal thic than hoic xuc d i t c i c khu vgc khd khin, chit hpp, khd khin v l nguin dipn
- Thiit bi vin tii; Lifa chpn phu hpp vdl quy
md edng suit, thiit bj khoan, xuc, cung dd vin tai va d i e dilm ciJa tdng md nhu sau: Md Cpc, Ddo Nai Iga chpn cdng nghd v i n l i i lidn hpp dtd
- b i n g t i i vdi xe khgng ddng cd t i i trpng
q = 37+55 t i n d l v i n t i i than, v i n tai d i t da bing dtd t i i trpng q = 90*120 t i n Md Cao Son Iga chpn cdng nghd v i n t i i liln hpp dtd-bing tii vdi xe cd t i i tn?ng q = 37*55 t i n d i v i n t i i than, dtd t i l trong q = 90+140 t i n k i t hpp vdi trpm nghiin v i bing tai ed chilu ring bing
B = 2.200mm, ning suit 2.000t/h d l v i n tai dit di
- Cdng nghd vi thiit bi thii di It/a chgn theo hinh thuic v$n tii; k i t hpp dtd v i m i y gpt, vdl hinh thdc vin t i l d td thgln tgy, m i y dai da khi
v i n lai bing b i n g tai
* C i c giii phip ning cao miic <fp an toin khi khai thac xuing sau:
Dpng bd md khai t h i c xging s i g dupe Ipa
Trang 7w
chpn l i dpng bd i l l , d l ning cao dd i n djnh bd
md, d l t i i nghien edg va d l xgIt giii phip bde
giim t i l v i neo bd md vdi neo bd tdng o i l thdp
hope chit deo c i t thdp vdi nhdng khu vgc du
dllu kidn thl cdng
Kit luin:
Qua q u i trinh nghien cuu, d i n h g i i eic giii
phip k9 thupt d i p dng san lupng ning eao hidu
qui v i mdc dd an toin c i c md Id thien Idn khi
xuing siu cho phep rut ra nhung kit luin sau:
- D l dam b i o cho c i c md md rdng bidn gidi
tren mpt, dudi s i g nham t i n thg t i i da tai
nguydn, c i n thllt cd eic giai phip v l i n djnh bd
md nhu bdc d i t giam tai, neo bd md
- Vide nghidn euu, lua chpn trinh t g khai thic
cic md Ip thidn vung C i m Pha ed y nghia quan
trpng den sg phit triin v i mang Ipi hipu q u i kinh
t l nhit djnh cho c i e doanh nghidp Vdi y nghTa
nhu viy, de tai da kiln nghj giii phip l i ting sin
lupng than khai thic md Cpc S i u len 4 tripu
tin/nim va k i t thue khai thio n i m 2028, md
Cao Son giu nguyen s i n lupng 5 tripu t i n / n i m
va kit thuc khai thic nam 2038, md Deo Nai
trong giai doan 3 md hoat ddng se giam s i n
Igpng xuong 1,5 tripu tin/nam v i k i t thue mudn
nhit vio nam 2047
- Sd dung HTKT xuing s i u , dpc, mdt (hai) bd
edng tie, cd v i n t i i , d i t d i d i bai thai ngoii va
bii thai trong vdl vipe ap dgng cdng nghp khai
thie vdi gdc d i e bd cdng t i o Idn, tuy tdng khu
vue eg t h l cd t h l ap dgng HTKT khau theo Idp
ddng va de bd ddng tam thdi B i o sag day md
v i khai thic than bing MXTLGN
- Cic md c i n Iga chpn v i d i u tu BBTB ed
cdng suit Idn: Miy khoan xoay c l u , may khoan
thuy igc ed dudng kinh td d = 250*300mm; miy
xijc dit da cd dung tich gag E = 6,7+15m', xuc
than bing MXTLGN cd dgng tich g i g E =
3,5*6,7m'; van t i l d i t d i bang dtd cd t i l trpng
td 58*140 t i n , van t i l than nggydn khai bang
dtd t i i trpng 30*55 t i n
- D i i vdl cic md Cao Son i p dgng cdng nghp
vin tai lien hpp dtd - bang t i l cd m i y nghiin, ra
bai thai Bing N i u d l vpn tai mpt phan d i t d i
thai Ap dung thai d i bang m i y dai da
- Cie md Beo Nai, Cpc s i u i p dgng van tai lidn
hpp dtd - bang t i l d l vpn tai than nguyen khai
- Bi giam thilu i n h hudng eda eie bii thii
ngoii d i n mdi trudng xung quanh, c i n i p dgng
cic giai phip cdng nghp nhu: £)6 thii vdi chilu
eao ting t d 20*30m; x i y dung eic tuyin dd v i muong thoit nude bao quanh chin bai thii, hudng ddng chiy v i o c i c h i xd 19 mdi trudng; tpi nhdng khu vgc k i t thue d i thai, tring ciy xanh d l han ehi xdi mdn, spt Id b i i thii; tpo dd ngan theo eac mdp ting thai, nham ngan ddng ehay tran xuing sudn ting Trong qua trinh d i thai, c i n ap dgng eic glal phip: phun d i p bgi, phun I m , tudi nude, kilm soit nude chiy trin, tpo c i c h i tidu ling, h i xd mdi trudng v.v
- T i n dgng khdng gian kit thgc khal thic, cic
md d i bai thai trong hope bai thai tam: B i i vdi
c i c khu vgc phia dudi cdn t i i nguyen khai thie
h i m Id, ein d i thai theo trinh t g t d dudi Idn, chilu eao Idp thai td 2*4m B l hpn ehe anh
hudng nude tich dpng a cic bii thai trong d i n
khai thic ham Id, ein phai ap dgng cic giai phip dong bd nhu: nao vet bun trude khi do thai, su dung vai ngan nude, sd dgng c i c gilng thao khd bai thai, i p dgng giai phap khoan thao khd trong Id
- Boi vdi cac md khai thac xuong sau khi bd
md khdng i n djnh, cd t h l i p dung eie giai phap-thao khd bd mo bang he thong Id khoan (ddng hoac khoan ngang); gia cudng khii da bing be tdng phun, xi mang hda; neo bd md; khoan giam
i p
- B l dam bao an t o i n cho ngudi va thllt bi, cung nhu han e h i anh hudng eua no min khi khai thae xuong sag can ap dgng n i vl sai toin phin, n i min tpo bidn, tinh toin quy md bai n i phii hpp, thdng gid md /
Til lifu tham khao:
1 Do Ngpc Tudc Bao cao ting k i t d l tai
"Nghien cuv cac giai phip nham dip ung san luang, nang cao hiiu qua va mirc dd an toan cac md than ham Id, Id thien cdng suat ldm khi khai thic xuong siu" - Vidn Khoa hpe Cdng
nghp Md -Vinacomin, nam 2012
2 Luu Van Thgc Bao cao ting k i t d l t i l
"Nghien cuu cic glal phap ky thuat va cdng nghi khai thic theo huang hidn dai hda tai cac md than Id thien vung Quang Ninh" - Vipn Khoa hoc Cdng nghd Md - Vinacomin, nam 2011
KHCNM S 6 1/2013 • CNKT LO THIEN