Thong tin khoa hoc cong nghe mo y, NGHIEN Clhl AP DUNG THUT NGHIEM DAN CHONG MEM LOAI ZRY trong di§u kiin cac via than co chieu day trung binh, goc ddc tr€n 45° tai Cong than Hdng Thai The flexible sh[.]
Trang 1y, NGHIEN Clhl AP DUNG THUT NGHIEM DAN CHONG MEM LOAI ZRY trong di§u kiin cac via than co chieu day trung binh, goc ddc tr€n 45° tai Cong than Hdng Thai
The flexible shield ZRY, which has been used in the
diago-nal longwall mining technology for the coal seams having
medium thickness and the dip angle over 45° at Hong Thai
coal Company, has some dominant advantages compared
with the previous ones such as its simple structure,
light-weight, easy in installation or replacement, highly suitable
to the variation in thickness and dip angle of the coal
seams In this paper, the authors represent some results
from the pilot application of the above mentioned to Hong
Thai Coal Company recently
TS TRU'ONG eCfC DU ThS.TRAN T U A N NGAN
TS Le DO'C NGUYEN
KS TRUONG T I E N QUAN
Vien Khoa hoc Cdng nghd Mo - Vinacomin Bidn tip: TS Truong Ddc Dw
C6ng ty than Hing Thai hi$n dang quan ly va
khai thae eac vfa than thupc khu Hing Thdi vd
khu Trdng Khe pham vi t u muc +30 -^ 16 via Kit
qua ddnh gid ting hgp tru lugng va dilu kign d\a
chit ede khu vye trong phgm vi khai thdc cua
C6ng ty cho thiy, tru lugng cdn Igi cua hai khu
vyc khoang 6,35 tri$u t i n thupc edc via co ehieu
ddy trung binh, goc d i e thoai d i n nghieng va
die nghi§ng (khu Trdng Khe 3,9 trigu t i n , khu
Hing Thdi 2,45 tri$u tin) Trong do, tru lugng
via ddy trung binh, die tren 45° tgp trung chu yeu
d khu Trdng Khe vdi tru lugng khoang 2,49 trigu
tin
Trong nhung nam gan day, de khai thae cdc
via ddy trung binh, gdc d i e tren 45°, Cong ty
than Hing Thdi da dp dgng edc loai hinh eong
ngh# khai thae gim: eong nghe co gidi hda dong
b l khai thdc Id chg chia cot theo hudng die,
khiu than bang mdy bdo, chong gii> bang t l hgp
ddn chong 2ANSH; cong nghg khai thdc 16 dpc
via phdn ting, ching tdng cudng guong 16 chg
blng gid thuy lyc di dpng XDY Thyc t l san xuat
cho thiy, e6ng nghg khai thdc co gidi h6a dong
b | su dgng t l hgp 2ANSH da khang dinh dugc
tinh uu vigt vd higu qua kinh t l eao khi khai thdc
tgi mo vd hign dang dugc quy hogch dp dung
cho nh&ng khu vye md ed dilu kign tuong t y
D i i vdi cdng nghg khai thae Id dpc vfa phan tang,
do cde chi tidu kinh t l ky thugt dgt dugc cdn hgn
chi, n6n thdi gian tdi, se khdng uu tien lya chpn
dp dgng trong k l hogeh san xuat ddi han eua
C6ng ty
Theo k l hogeh san xuit kinh doanh cua C6ng
ty than Hong Thdi giai dogn 2014-^2020, san lugng than nguyen khai nam 2015 tang len den 1,25 trieu tan, rieng san lugng khai thdc tiF cac via than khu Trang Khe dy kiln Id 0,6 trigu tin/nam De dgt k l hogch d6, C6ng ty phai huy dpng khai thdc toi da tru lugng cac khu vye via day trung binh, d i e tren 45° thupc khu Trdng Khe, Trong do, mpt phan tru lugng co dilu klgn dja chit thuan Igi thupc via 12 khu Trdng Khe II (khoang 645 nghin tan) dugc quy hogch dp dgng cong nghe khai thae co gidl hoa dong bp su dgng to hgp dan chong 2ANSH Doi vdi phin tru lugng via die c6n lai khoang 1,84 trigu t i n (tap trung tai via 9b vd vi'a 10 khu Trdng Khe II, vdi chilu ddy via thay d l i t u 0,8^4,4m, via eo tu 0 -^
3 Idp dd kgp vdi tong chieu ddy t u 0^1,8m), do
to hgp ddn ching 2ANSH c6 dieu kien dp dgng trong miln chilu ddy via tu 1,1 ^2,2m vd khd ndng phd da kep cua mdy bdo kem nen khai thdc phan tru lugng ndy se khong phu hgp Do do, Cong ty than Hing Thai da lua chpn c6ng nghg buong -16 thugng cheo d l khai thdc Tuy nhien, cong nghe khai thdc buing -16 thugng cheo co
t h i eho san lugng vd nang suit lao dpng cao hon cong nghe khai thae 16 dpc via phdn tang, song khIi lugng dudng 16 chuan bj Idn (30-H 35m/1000T), ty le ton that than vdn con d muc cao (tren 33%), hon nOa, lai kho quan ly ve mat
an todn Vi vay, logi hinh cong nghg ndy chf dp
dung tgm thdi 6e dap ung nhu d u trude mdt ve
san lugng mo, con v l lau dai, Cong ty vdn co
Trang 2Bang
TT
1
2
3
4
5
6
7
8
9
10
Thdng s6 ky thu$t cua mot s6 loai dan c
Ten thong so
Chieu dai xa chlnii (xd ndc)
Chieu dai xa che chSn
Chieu ddi xa duoi
Chieu rpng gia than gid
Khoang tSm 2 gia \\hn nhau
Hinh thiFC lien Icet giu'a cac gia
Chieu cao ch6ng giO cija dan
Chieu day via ap dung phu hop
Goc d6c via
Trong lu'o'ng moi gia
hdng ZRYcCia Trung Qudc
Dem vj
mm
mm
mm
mm
mm
m
m
do
Kg
Tiis6
ZRY20/30L
1260
850
1200
320
350 Xich
2 , 0 * 3 , 0 2,0 + 3,0
>450
380 + 400kg
ZRYWaSL
1170
660
1200
320
360 Xich 1,6 + 2,6 1,6 + 2,5
>450
-ZRY3e/4SL
1942
950
1200
320
370 Xich ' 3,6 + 4,6 3,6 + 4,6
>460
-1 Xi din hadng,2 Xi ndc (xi chinh):3 Xi che
chin,4 Xi dudi, 5- Piston 6iiu khidn xi dudi
a Cdu tao din chdng
c Kef cau xich lien kdt cic dan chong ^ p^^ ^^^^g ,Q^, jj^y
Hinh 1 Din chdng mem lo^i ZRY
chu truong tilp tuc nghien cuu, tim kilm cong cong nghe khai thae su dung dan ching mIm nghe khai thdc mdi, hieu qua hon de thay t h i
Thue hien ehu truong ndy thdng 11/2013
Cong ty than Uong Bi - TKV va Vien Khoa hoe
Cong nghe Mo - Vinacomin da t l chue di tham
quan khao sat cong nghe khai thae su dung ddn
chong mem loai ZRY tai mo Hing Viin - Tan
Cuong - Trung Quic K i t qua cho thiy, eong
logi ZRY de khai thdc thu nghiem trong dilu kign
ede via eua Cong ty than Hong Thai
Dan ching mem loai ZRY (hinh 1) cua Trung Quoc la t l hgp gIm nhilu gid ehing (vi ching),
m l i gia chong co chilu rpng tCr 300-^320mm gIm 3 doan (xd noe, xd che chan vd xd du6i), lien k i t vol nhau bang xich hode khdp ban l l , nghe khai thae co dieu kien dp dung tuong ty khoang each giua eac gia ching t u 350 - 370
nhu dllu kien cac via than ddy trung binh, goc mm O bp phdn xd dudi dugc bo tri hg thong
xi-doc tren 450 cua khu Trdng Khe Do vay, cac lanh piston thuy lyc co tac dgng cho phep thay ben da thong nhit de xudt nghien cuu dp dung d l i chilu eao ching gii> Id chg trong mpt khoang
Trang 3I Khoan Id min giFong Id cha b Napndmin, thonggio c.Tiithan,ha din chdng theo tien 6Q
Hinh 2 Nguyen /)? lim vide cda din chdng mdm ZRY
a Md hinh lip dit din chdng ngoii mit bing
Hinh 3 Din chdng mim loai
nhit dinh vd h i trg cdng tdc dilu khiln di chuyin
ddn chong trong qud trinh khai thae
Vol ddn ching mIm logi ZRY (bang 1), eho
phdp khai thdc higu qua doi vdi dllu kien via
than die nghieng d i n doc dij-ng co chilu ddy via
tu 1,6^4,5m Trong 2 nam gan day, d Trung
QuIc, dd CO khoang 10 guong 16 cho thupc cdc
tinh Hd Bac, Thanh Hal, Tan Cuong su dgng loai
ddn ching ndy d l khai thdc via doc, san lugng
mli guong 16 chg (co chilu ddi t u 60 ^80m) tu
80.000-^120.000 tIn/nam, nang suit lao dpng
tryc tilp tip 6,0-^ 10,0 tin/cdng Hien tgi, mo than
Hing Viin - Tan Cugng dang khai thae 16 chg d
via Bl bang so d l eong nghg khai thdc guong
16 chg xien cheo, khiu than bang khoan no min
ching giu' bang ddn chong mem logi
ZRY36/45L Via than co g6e die 45° ^ 55°, trung
binh 510, trong via e6 ehua Idp dd kgp day 0,3
•!-0,8m, da vach, trg via Id Idp b|t kit ben vOng,
than c6 hg s i kien e l f = 2-^3, cd tinh t y chdy vd
nguy hilm v l n l bgi than San lugng id chg binh
qudn 300 tin/ngdy, ndng suit lao dpng dgt 4,0
tin/c6ng
b Din chdng lip dit trong guung Id chiy ZRY khi lip dit trong Id cho'
Nguyen ly lap dat vd Idm viec cua dan chong mIm ZRY trong 16 chg (hinh 2, 3) nhu sau: Mli gia ching dugc bo tri l i p dat trong 16 chg sao cho mpt dau cua gia ching Id xd ddn hudng (1) bdm sdt vach via than, dau con lai la xd du6i (4) ching true tilp xuong tru vi'a (hode nIn than) tgo thdnh 2 diem chong eo ban cua mli gia ching Gid ching duoe edn chinh sao eho doan xd noc (2) luon d trgng thai nam ngang, phg thupc vdo ehieu ddy via, chieu cao khoang khong gian Idm viec phia dudi dan chong dugc duy tri tu 1,6
^1,8m Dpc theo chilu ddi 16 chg co dp die 25 •;• 28° so vdi mat phang ngang, edc gid ching duoc l i p dat vdi khoang cdch 350-370mm vd duge lien kit chdc chin vdi nhau bang kit d u xich tao thdnh hg thong ddn chong mIm dpc theo chilu dai 16 cho Khi ldp dat dan chong se tiin hanh trai Idp ludi thep bao phu phia tren cdc gia ching d l ngan dat dd roi vdo khong gian Idm vigc phia dudi Qua trinh khai thdc 16 chg se tiin hdnh khoan n l min khau guong thdnh tung ldp vdi tlln dp 0,8m Sau khi khau than, dan ching dugc dilu khiln di chuyin xuIng phia dudi vdi
Trang 4a Tru'dng hop di lai tm than bao ve Id doc via vin tii
Hinh 4 So 66 cong nghe khai thic
budc di chuyin tuong ung vdi tiin dp khau de
ching giCi' khoang khong gian 16 chg
Ban chdt cua so d l cong nghe khai thdc 16
eho ching giij' bang dan mem logi ZRY nhu sau:
- v l cong tac chuan bi: Khu vyc khai thdc
dugc chudn bi thanh cac cot ddi theo phuong,
chia tang (hoac phan tdng) bang cac dudng 16
doc via thong gio vd 16 doc via van tai (hogc 16
dpc via phan tdng) Chieu eao theo phuong
thing dung cua t i n g (phan tang) Id chg tie 40
^45m, tuong ung vdi chilu dai Id chg xien cheo
tu 80 -^100m (16 chg co goc d i e bllu kiln 25 -^
28°) Chieu dai theo phuong cua 16 chg t u 600
-^ 800m, tuy nhien, chieu ddi theo phuong cua 16
chg phg thupc vdo dllu kien dja chit vd so d l
khai thong chuan bj cua khu vyc dp dgng, Tuy
thupc vdo vigc eo gii> igi 16 dpc via vgn tai cho
khai thdc tang dudi hay khong ma chudn bj 16
chg cho phu hgp, eg t h i :
+ Trudng hgp giO' lai 16 doe via van tai ( d l lai
trg than bao ve): Cong tdc ehuan bj 16 chg nhu
sau: tai muc thong gio vd mue van tai cua tang
(hoac phdn tang), dao dudng 16 dpc via thong
gi6 vd dudng 16 dpc via van tai (dpc via phan
tdng) ra bien gidi khai trudng T u 16 dpc via van
tai d vj tri bien gidi khai trudng, dao cap cup thao
than va cup di lgi dau tien, khoang each giua hai
cup theo phuong tu 6 -^ 8m Chilu ddi cup tuy
thupc vdo chilu rpng trg than d n d l lai bao ve
16 van tai (til thilu la 5,0m) Tai dilm dung ddo
cup, tlln hanh md 16 n i l thong hai cup, tu 16 n i l
nay tilp tuc md thugng khdi dilm xien cheo len
16 thong gio Thuong khdi dilm xien cheo co goc
die bilu kiln so vdi mat phang ndm ngang tu
25°^28°, chilu dai tu 80 H-IOOm Tai thugng khdi
diem nay se lap dat dan ching mIm d l khai thdc
Y///////^'//^/////////////777/////\
b Truong hop khdng de lai tru than bio vd Id dpc via vin Hi
Id cha su dung dan chdng mdm ZRY
Id chg Trong qua trinh khai thdc cung tien hanh ding thdi eong tdc ddo cup thao than vd thong gio vugt trude guong Id chg, khoang each giua cdc cup t u 6,0 -^ 8,0m, sao cho trude guong 16 chg luon duy tri t u 2 -^ 3 cup (hinh 4a)
+ Trudng hgp khong giu Igi 16 dpc via van tai: Cong tac chudn bj 16 chg nhu sau: tgi mue thong gio vd muc van tai cua t i n g (hoac phan tang), ddo cdc dudng Id dpc via thdng gid vd 16 dpc via van tai (dpc via phdn tang) ra bien gidi khai trudng Tai day, tien hdnh md 16 thugng khdi dilm xien cheo t u 16 dpe via van tai len 16 dpc via thong gid vdi goc d i e bieu kiln so vdi mgt phang nam ngang tiJ- 25° -^28°, chieu ddi tu 80 ^ 100m Tai thugng khdi dilm ndy se lap dat dan ching mIm d l khai thdc Id chg (hinh 4b)
- Ve cong tac khai thae Id cha: Cong tac khiu
guong dugc thue hien blng khoan n l min, trinh
t y khdu t u dudi len thdnh tung dogn eo chilu dai 10 -^ 20m, t l l n dp khau guong 0,8m/ehu ky Ching giu Id chg bang he thong cae dan ching mIm ZRY duge lien k i t vol nhau dpc guong 16 chg bang xich Khoang each giua cac dan chong
Id 350mm, phia tren xa dan dugc trai ludi thep giu I n djnh noc vd dam bao thuan lgi khi thu hii ddn Phia chdn 16 chg luon duy tri doan 16 chg nam ngang c6 chieu ddi 10 -^15m, phia d i u 16 chg duy tri dogn 16 chg nam ngang e6 chieu ddi
15 ^ 20m Sau mdi chu ky khai thdc, cae dan ching t u djch ehuyin theo hudng khiu guong mpt khoang cdch bang tien dp khau nhd dp lyc eua da phd hoa phia tren dan chong va trpng lugng ban than ddn Theo tlln dp djch chuyin do, doan dan ching phia chan 16 chg nam ngang se dai them va dogn dan ching phia 16 thong gi6 se ngdn di Vl vay, sau mpt so chu ky khai thae nhit
Trang 5djnh se phai thdo thu hIi bdt cac dan ching d
chdn Id chg d l chuyin len l i p dgt b l sung d Id
dpc via thdng gid t i l p giap d i u 16 chg
- Vi cong tac v$n tai than: Trudng hgp giu lai
16 dpc via vdn tai, than khai thdc tip guong Id chg
ty tnrgt tren mdng kim loai xuIng cup thdo than
vd dugc thdo xuIng mdng cdo Id dpc via vdn tai
Trudng hgp khong giu' Igi Id dpe via vgn tai, than
khiu guong ty trugt tren mdng kim logi xuIng
mdng eao 16 dpe via van tai Sau dd, t u Id dgc
via v§n tai than dugc mdng cdo van ehuyin d i n
thugng thdng gio van tai phia trudc d l van
chuyin ra ngodi theo hg thong van tai chung cua
khu vye
- Ve cong tac thong gio: Thong gio cho 16 chg
dugc thyc hign nhd hg dp chung cua khu vye:
Gio sgeh tu ngodi trdi theo he thong dudng 16
khai thdng, chuin bj cua khu vyc 16 chg len 16
dgc via vgn tai, cup thdo than (nlu c6) len thong
gl6 cho 16 chg Gio thai t u 16 chg len 16 doe via
th6ng gi6 vd thodt ra ngodi trdi theo he thing cae
dudng 16 thodt gio thai chung cua todn mo
- vi cdng tic thoit nuac: Nudc thodt ra tu
khu vyc khai thdc 16 chg t y chay theo he thing
Sdng 2, Tdng hop cic thdng s6 cua so dd cdng nghd khai thic Id cha xidn chdo, chdng gid bing din mim
ZRY t9i Cdng ty than Hdng Thii
ranh thodt nudc tren cdc dudng Id dugc thilt k l vdi dd d i e ra phia ngodi 5 %o va thoat ra ngodi mat bang theo he thong thodt nudc ehung cua
mo
Dya tren co sd dac tinh cua cdc loai ddn ching mem ZRY, ban chit eua so do cong nghe
vd dieu kien dja chit cdc via than co chieu ddy trung binh, gdc d i e tren 45° (eg t h i eua via 9b
vd via 10 mue +30/+200) khu Trang Khe II, Cong
ty than Hing Thai da phii hgp vdi Vien Khoa hpc Cong nghe Mo - Vinacomin nghien cuu vd lap "Dy dn d i u t u dp dgng thu nghiem edng nghe khai thdc 16 chg xien cheo, chong giu bang ddn mem ZRY tgi Cong ty than Hong Thai"
Dy an da phdn tich vd xde djnh duge edc thong s i cua so d l cong nghe khai thdc 16 chg xien cheo, ching giu bang ddn mIm ZRY tgi C6ng ty than Hing Thai (bang 2)
Qua tinh todn xdy dyng hp chilu ching giiJ'
16 chg, hp chieu khoan n l min khai thdc, to chuc san xuat 16 chg, cdc chi tieu kinh t l - ky thuat co ban cua 16 chg trong dilu kien via 9b dugc gidi thieu trong bang 3
Kit qua phan tich kinh t l cho thay, vdi tong
TT
1
2
3
4
5
6
7
8
9
-10
11
12
13
14
16
16
C^c thdng so
C6t cao mu-c t h i n g gi6 cua tang khai th^c
C6t cao mi>c v$n tai cua tang khaj thae
G6c d6c via trung binh
ChiSu cao di/ng ciJa tang
Chi^u cao nghieng cua tang
S6 phSn t i n g 16 cha
Chifeu cao di>ng cua m6t phSn t^ng
Chieu cao nghigng cua mdt phan tSng
Chieu cao tn,i bao v$ 16 dgc vfa v^n tai cua m6i phan t^ng
Theo chi^u cao du-ng
Theo chi^u cao nghiSng
Chi^u cao du-ng cua 16
cho-ChlSu cao nghiSng ciJa 16 cho'
Gdc d6c 16 chg' so v&l m$t p h l n g n i m ngang
Chi^u ddi cua 16 che xl6n ch6o
Gdc gi&a Id chg' vA 16 dpc via van tai
KhOeing cdch v u v t tnr6c theo phuang giOa dau vd chdn 16 cha
Chidu ddi theo phi/ang Id cha
Kt hi^u
hlg h.t
a
H H„
Np,
Hp, H"p, H",, H",r Hic
H\
8
U
T
AL
Lp
Bern vi
m6t m6t d6 met met Phdn tang met met met
m a met
m a
36 m6t
dd
mdt mdt
Solwip^g
+206 +40
48
165
222
3
56
74
11
15
44
59
28
94
39
73
270
Trang 6Bang
TT
1
2
3
4
5
6
7
e
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
3 Bang chf tieu ffinh td iiy thuat cOa Id chet
Ten chf tieu
Chi^u ddy via trung binh
Goc ddc via trung binh
Chidu cao nghieng phan tdng khai thae
Chieu ddi [6 cha xien chdo
Goc ddc Id c h a
Trong lu'ang thd tich cua than
He so kien cd cua than (/)
Tidn dd khai thae thi^c te mdt chu ky
Tidn dd khdu theo phu-ang cua Id cha
So ca hoan thdnh m6t chu kJ"
He sd hoan thanh chu ky
S6 ca Idm vide ngdy - ddm
He sd khai thae
Ddn chdng loai ZRY20/30L
San lu'ang than khai thdc I c h u ky
San lu'ang than khai thae 1 ngay - ddm
San iLfong than khai thdc 1 thang
He sd chuyen didn 16 cha
Cdng sudt Id cha
Sd cdng nhan Id c h a mdt ngdy - ddm
Nang sudt lao ddng true tidp
Chi phi thuoc no eho 1000 tan than
Chi phi kip no cho 1000 tdn than
Chi phi met Id chuan bi cho 1000 tdn than
Chi phi met Id cup thao than, di lai
Chi phi met Id doc via, 16 thuang
Chi phi ddu nhu hod cho 1000 tdn than
Chi phi luai thdp eho 1000 tdn than
Ton thdt cdng nghd
Don vi
mdt
dp mdt met
do
Tlni>
-met met
ca
-ca
-dan Tan Tan Tan
-T/nam ngudi T/cdng i<g kip met met met lit
kg
%
Khoi luKmg
2,5
48
69
94
28 1,72
2 0,8 1,27
2 0,8
3 0,95
386
307
368
9 200 0,86 90.000
72 6,1 144,6
482 18,1 8,8 9,3 26,6 87,0 20,3
muc dau tu sau t h u l 63,48 ty ding (trong do chi
phi thilt bi 51,25 ty ding), da cho cdc chi tieu:
gid thdnh san phdm 940.084 ding/tdn; loi nhuan
rong (Pn) 85,7 ty ding; gid tri hien tai thyc (NPV)
17,7 ty ding; ty le lai npi tai (IRR) 21,62%; thdi
gian hoan v6n 3,2 nam
Viec ddu tu dp dung thu nghiem cong nghe
khai thae 16 chg xien cheo, ching gii> bdng ddn
mIm loai ZRY d l khai thae cdc via than e6 chilu
day trung binh, goc die tren 45° tai Cong ty than
Hong Thai c6 nhung uu dilm n i l bat so vdi cac
loai dan chong trudc day nhu: k i t cau dan
ching don gian, trpng lugng nhe, d l thdo lap
hoac thay t h i , thich ung eao trong dieu kien via
CO biin dpng v l chieu day va goc die Ket qua
dp dung thu nghiem thanh cong tgi Cong ty than Hong Thai se Idm tiin d l cho viec md rpng ap dung de khai thae cac via than co dieu kien dja chit tuong t y trong cdc mo than h i m 16 cua T$p dodn Cong nghiep Than - Khodng san Vigt Nam./
Tai lieu tham khao:
"Du an <3au tu ap dtjng thu nghiem cong ngh$ khai thae Id cha xien cheo, chong giu' bang dan mem ZRY tai Cong ty than Hong Thai - TKV"
Vien Khoa hpc Cdng nghe Mo, thdng 7/2014