w Thdng tin khoa hpc cdng nghd md

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Thdng tin khoa hpc cdng nghd md

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NGHIEN cau HP DUNG GIfll PHflP NO MIN

TRONG L 6 K H O A N DAI KHI KHAI THAC VIA THAN DAY, DOC

ta! cac mo ham Id vung Quang Ninh

NCS. NHO-VI$T TUAN

KS. TRAN MINH Tie'N KS. Le QUANG PHUC

Vlgn Khoa hgc Cdng nghd Md - Vinacomin In 2011, Institute of Mining Science and

Technology (VIMSAT) has been assigned to carry out the theme "Study on the blasting solutions In the long boreholes for mining the thick and inclined coal seams at Quang Ninh underground coal mines". The fundamental target of the theme is to apply the blasting solution at the long boreholes for increasing the coal production, the coal recovery rate and the production efficiency when mining the thick and inclined coal seams.

Theo kit qua tong hpp trQ- Bdng 1. Bdng tong hgp trU Iwgng via ddy, doe tai cdc md than lupng vd ddc dilm d i l u kidn ham Id vung Qudng Ninh

dja chit ky thupt md tpi ede khodng sdng than dupc khai thde bang phuong phdp h i m Id vung Quang Ninh do Vidn Khoa hpc Cdng nghd Md thye hidn [1] eho thly, trQ- lupng than ede khu vyc via day, doc tinh sdu nhlt d i n mire -400 Id

134 tridu t i n . Theo chilu ddy via, tru lupng tap trung ehu ylu d gidi han m = 3,5U10,0m chilm 89% tong trij' lupng ddnh gid, Theo gdc die via, tru lupng tap trung ehu y l u d gidi hpn a > 55°, chilm 57,5% tong trQ' lupng ddnh gid. Tong hpp trCr lupng than via ddy, doc tai cde md

ham Id vung Quang Ninh dupe thing kd trong bang 1.

Trong cdc nam qua, vdi mgc tidu giam ton thit than va ndng eao mCre dO an todn lao dOng trong khai thac via day, die, Vidn Khoa hpc Cdng nghd Md Vinacomin (Vidn KHCN Md) da phoi hpp vdi eac don vj khai thac than h i m Id nghien eCru, triln khai dp

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1 2 3 4 5 6 7 8

Ten md

Mpo Khd Nam M i u Vdng Danh Ha Lam H6n Gai Ha Long Duang Huy Quang Hanh

Tong cgng

Ten via than

V9b, V9, V8, V7, V6, V5 V8, V7, V6a, V6, V5 V4, V5, V6, V7 V14, V13, V I I , VIO SuoiLai: V14, V I I , VIO HdRdng:V14, V13

V14, V13, V12, V I I , V9, V8 V7, V5

MUe ddnh gid

-400^LV -350-r+125

-350^LV -300^LV -150^LV -150^+50 -350^+38 -175^-50

TrU luxyng (lo'oOT) 58.939,2 35.882,3 10.025,7 6.256,1 10.116,3

7.426,1 4.658 766,3 134.070

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Hinh 1. So do cdng nghe khai thac chia Idp ngang nghieng hoac chia Idp bang

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Thdng tin khoa hpc cdng nghe md dgng cdc so d l cdng nghO

khai thde chia ldp ngang nghieng (CLN) hope chia Idp bang (hinh 1) vd so d l edng nghp khai thde Id dpe via phan ting (DVPT) 6k thay thay t h i eho ede so d l edng nghd khai thde bulng. O i n nay, cdc so d l edng nghd khai thde ndy da 6ugc dp dung p h i biln tpi h l u hit ede md him Id vung Quang Ninh, ddng gdp 10% -f 15% t i n g san lupng than khai thde tir him Id hdng ndm eua Tpp dodn Cdng nghipp Than Khodng san Vidt Nam (Vinacomin), tuong u-ng 2,5 ^ 3 tridu tIn/ndm.

Tuy nhidn, ede so d l edng nghd khai thde ndy edn nhung ton tai, dd Id edng suit Id ehp thip, pho biln tip 50 d i n 60 ngdn tIn/ndm doi vdi edng nghd khai thde CLN vd tu- 35 d i n 45 ngdn tIn/ndm vdi edng nghd phd no phdn tang, ehi phi mdt Id chuan bj eao tu- 20 -^ 35 m/1000 t i n than doi vdi edng nghp khai thde CLN vd tu' 28 ^ 40m/1000 t i n vdi cdng nghd khai thde DVPT Nguydn nhdn eo ban Id do sCr dgng phuong phdp no min trong ede l l khoan ngan (tii da 3,5m). Cdc thilt bj khoan cdn Ipe hpu, ndng lye khoan sdu kdm, phuong tidn kieh no Id kip vi sai dipn ed chilu ddi ddy d i n ngdn vd dO bin kdm ndn chilu cao phdn ting bj hpn chl, p h i biln tu' 6m -5- 8m. Nhdm ndng eao ndng suit, san lupng khai thac, giam chi tidu mdt Id cho 1000 t i n than vd giam chlng xdn Id chuin bj, vipe nghien ^CCPU cdc giai phdp nang cao hidu qua khai thde cua cac so d l cdng

a. May khoan dien cam tay ZM-12

b. May khoan khi nen cam tay ZQS-35

c. Chodng khoan xoan rudt gd

-. s \ i I / /

d. Thuoc no NTLT W^ji'L e. Kip dien vi sai

an toin liVD8D f. Mdy no min MFD-50 Hinh 2. Cdc lo^i phuxyng tiin khoan no min hiin dang sU dung

trong khai thic via diy, doc nghd via day die hidn nay Id

cin thilt.

MOt s l phuong tidn khoan n l min hidn dang SLP dgng khai thde via die dupe trinh bdy trong hinh 2.

Tir nhCrng ndm 50 -^ 70 cua t h i ky trudc, tpi mOt s l nude cd nin edng nghidp khai thae than phdt triln trdn t h i gidi nhu Lidn Xd (cQ), Phdp, v.v... da dp dgng khai thac via day, d i e blng cdc so d l cdng nghd khai thde su' dgng phuong phdp n l min trong Id khoan ddi, cho san lupng vd nang suit lao dOng cao, chi phi met Id chuin bj vd t i n thit than giam. Trong giai

doan nay, d l khoan cde l5 khoan dai, ngudi ta sCr dgng cdc may khoan dang cOt ehpy bdng khi nen, npp min trong cac Id khoan ddi blng thu edng, SLP dgng phuong tipn kich no bdng day n l vd kip didn.

Trong vai thap ky trd lai day, tai cac nudc nhu Nga, Slovakia, Phdp, Trung QuIc, Ba Lan v.v. da ap dgng so d l cdng nghe khai thac CLN, DVPT, n l min trong Id khoan ddi dp dgng cho dilu kidn via day, die. Trong cac so do cdng nghd nay, chilu cao phan t i n g len d i n 30m, nap min bang co gidi (sCr dgng khi nen). Vipe nang chieu eao

KHCNM SO 1/2012* CNKT HAM L 6

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Thdng tin khoa hpc edng nghd m d

phan t i n g da gdp phan nang eao hidu qua vd an todn, nang cao ndng s u i t lao dOng.

Hidn nay, tpi Ba Lan, Slovakia, Thgy D i l n da dp dgng pho b i l n cdng nghd ndy vd eo gidi hod hodn todn tir khdu ddo c h l n g Id c h u i n bj, c h l n g giu g u o n g , d i n vide khoan, npp n l min. Hinh 4 Id hinh anh mOt so t h i l t bj c o gidi hda trong Id ehp khai thde Id dpc via phdn t i n g no min trong Id khoan ddi tpi Slovakia.

Ndm 2011, Vidn KHCN Md 6ugc BO Cdng T h u o n g giao thye hidn d l tdi "Nghien cuu giai phap no min trong lo khoan dai khi khai thac via day doc vung Quang Ninh", vdi mgc tidu ehinh Id d l x u l t dp dgng ede giai phdp no min trong ede Id khoan ddi nham ndng eao san luong, ty Id thu hoi than vd hidu qua san xuat khi khai thde cdc via ddy, doe.

Tip nhung khd khdn, ton tai trong thye t l khai thde via ddy, doe vung Quang Ninh vd kinh nghidm khai thde via ddy, d i e trdn t h i gidi, d l tdi da d l x u l t SU" dung phuong phdp no min trong Id khoan ddi dp dung eho cdc so do edng nghd khai thac CLN vd DVPT, vdi vide SLP dgng vi chong thuy lyc hope gidn t y hdnh 6k chong giCp g u o n g khai thde, su' dung mdy khoan dpng cOt k i l u dCpng hope ndm ehpy bang khi ndn, thuy lye, didn 6k khoan ede Id khoan ddi, SU' dgng kip phi didn an todn 6k kich no trong Id khoan ddi, trong dd, kip vi sai phi didn an todn do Vipn Khoa hpc Cdng nghd Md phoi hpp vdi Cdng ty TNHH MTV Hda

b. Scr do edng ngh^ khai thde Id dgc via phan tang no min trong cde lo khoan ddi dp dyng t^i md Saint-Marl (Phdp)

a. Sa do edng ngh^ khai thde buong Iwu than, no min trong

cde to khoan ddi dp dyng tai Liin Xd (eu)

Hinh 3. Mit so so do cdng ngh^ khai thde via ddy, doe sU dyng to khoan ddi tai nuvc ngodi

e. Mdy khoan Id khoan ddi EBK-2M

Hinh 4. Mdy khoan vd ddn chong ty hdnh

SLF dung trong sa do cdng nghe khai thde Id dgc via phan tang no min trong lo khoan dai t^i Slovakia

c h i t 21 BO Q u I c Phdng c h l tpo tir k i t qua eua d l tdi e l p Tpp dodn trudc dd: "Nghien cuu san xuat kip no vi sai phi dipn an toan ham Id va ap dyng thu nghipm trong cdng nghp no min lo khoan dai d cac md ham Id Quang Ninh"

Tir cdc k i t qua nghidn cu-u eua d l tdi, Vipn KHCN Md k i t hpp vdi Cdng ty than Ha Long t r i l n khai t h i l t k l dp dung thCr nghipm cdng nghd khai thac

Id DVPT tpi Id ehp mu'c -25 -^

+50 via 14 khu III - Nui Khdnh, Xi nghipp Than Ha Rdng. Khu v y c ed ddc d i l m , c h i l u ddy via tu' thay doi tu- 5,6 H- 8,0m, trung binh 6,5m; gde doc via thay doi tu' 49° H- 62°, trung binh 56°, via thuOe lopi on djnh trung binh v l c h i l u ddy vd gde doe, trong via ed tu' 0 -H 6 Idp da kep Id set than, set k i t vdi c h i l u ddy dd kep thay doi tu' 0,0 ^ 1,2m, trung binh

w Thdng tin khoa hpc cdng nghe m d

0,3m; vdch tryc tilp thuOc loai b i n vQ'ng trung binh, tru tryc tilp thuOe lopi on djnh trung binh d i n on djnh.

Theo thilt k l , vide chlng giQ' guong khai thde blng gidn chlng t y hdnh, n l min hp trin than bdng ede 16 khoan ddi.

Md ta so d l edng ngh^

khai thde dp dung, nhu sau:

Cdng tdc chuin bj: chia thdnh ede khoanh, bang 16 thupng dd trung tdm, hinh thanh 2 cdnh khai thde, vdi chilu ddi theo phuong tu' 100 -^ 150m, tu' dd chia thdnh eac phdn ting khai thde, trong dilu kidn khu vyc thu- nghidm, thilt k l chilu eao phdn ting la

12,5m tuong u-ng vdi chieu ddi nghidng 15m. Cde Id dgc via phdn tang dugc chuin bj thdnh tu-ng cap tuong u-ng tCr trdn xuong theo chilu doe via.

Cdng tdc khai thde: khai thde tirng cdnh, trdn mdi cdnh thye hidn khai thde dong thdi hai phdn tang, khoang cdch duoi nhau giQ'a hai phdn ting dam bao khdng nhd hon 20m (phdn tang trdn tiln tarde phdn tang dudi), khlu dat v l thupng dd tmng tdm.

Chong giQ' guong khai thde SU' dgng hai ddn chong ty hdnh vd mOt mdng cdo chuyin tai nam giQ'a hai gidn chlng 6k van ehuyin than ha trin ra mdng cdo phia tarde. Ha trin than bdng n l min trong cdc lo khoan ddi, su' dgng kip vi sai phi didn kit hpp day n l .

Trinh t y khai thde gIm cde bude khoan no min hp tran than ndc, di chuyin gidn chong, thu hii than ha tran, van ehuyin than ha trin va di

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a. Sc do cdng nghe khai thac

c. May khoan thuy Gian chong ty hanh KDT-2 lyc VPS-01 Hinh 5. So do cdng nghi khai thic 16 dgc via phin tang, n&.h min trong cdc lo khoan ddi, chong giU guxyng khai thic bang

giin chong ty hanh ehuyin eau ehuyin tai kit thue

ehu ky khai thde.

Trong thdi gian diu, dy kiln SLP dgng thulc n l AH-1 hoac NTLT, vide npp min se 6ugc thye hidn bang thu cdng, sau khi ed thulc n l dec se tiln hdnh npp min bdng co gidi.

Cdng tdc van tai: Than thu h i i theo mdng cdo chuyin tai do vdo mdng cdo trdn Id dpc via phdn ting, mdng truot tai cup xuydn via vd thupng dd trung tam, xuIng hp thing vdn tai chung cua khu vyc.

Cdng tdc thodt nudc: nudc t y chay theo Id dpc via phdn t i n g ra thuong dd trung tdm, xuIng hd thong thodt nudc chung cua khu vyc.

So do cdng nghd khai thac dupe md ta trdn hinh 5.

Cdc thilt bj chinh dupc lya chpn su' dgng g I m gian chong t y hdnh loai KDT-2 de chong giCp guong khai thde, may khoan thuy lyc loai VPS-01 6k khoan cdc Id khoan ddi. Trdn CO sd s o d l cdng nghd lya chpn 6k tdi da t i l n hdnh tinh todn cac chi tieu kinh t l ky Cdng tdc thdng gid: guong thuat co ban cua cdng nghp khai thde dupc thdng gid cgc (phuong an I) va so sdnh vdi bO, gid speh nhd cdc quat cgc cac chi tieu cua cdng nghe bO tren Id thupng tmng tam khai thac chia Idp ngang theo Ing gid d i y vdo guong, nghieng da dp dgng tai mo gid thai tip guong theo Id phari (phuong an II). K i t qua tinh ting ra ngodi. toan trinh bay tren bang 2.

KHCNM S6 1/2012* CNKT HAM L 6

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Thdng tin khoa hpc cdng nghd md Bang 2. Chi tieu kinh te ky thuit cua cdng ngh$

TT

1 2 3 4 5 6 7 8 9 10 11 12

13

14 15 16 17 18 19 20 21

Ten chi tiiu

Chilu ddy via trung binh Gde d i e via trung binh

Trpng lupng t h i tich eua than Hd so kidn d cua than (f)

Chieu cao nghidng phdn ting khai thde

Chilu cao nghidng ldp than hp trin Tien dO khai thde mOt ehu ky So ca hodn thdnh mOt chu ky Hd s l hodn thdnh ehu ky S l ea Idm vide ngdy ddm San lupng than khai thde 1 ehu ky

San lup-ng than khai thde 1 ngdy ddm (hai phdn ting khai thde ding thd-i)

San iLpqyng than khai thde 1

•thdng (hai phdn ting khai thde ding thdi)

Cdng suit khai thde (hai phdn tang khai thde dong thd-i)

s l cdng nhdn 16 cha mdt ngdy ddm (phue vu hai phdn ting) Ndng suit lao ddng edng nhdn 16 cha

Chi phi thulc no cho 1000 tan than

Chi phi kip no cho 1000 tan than

Chi phi mdt 16 ehuIn bj eho 1000 t i n than

Chi phi d i u nhu hod eho 1000 t i n than

Ton that edng nghd

Don vj

m dO Tln/m^

m m m ca ea Tin

Tin

Tin

Tin/ndm ngudi Tln/e6ng

kg kip m kg

%

Khoi Iwgng PAI

6,5 56 1,64 1^2 15 _JI2,5

2,8 3 0,9

3 240 408

10.200

110.000 66 5,6 80 133

14 11 20

PA II

12,6 10 1,6

2 0,9

3 200 270

6700

80.000 66 4,5 140 270 20 100

35 Tu- kit qua tinh todn trong

bang 2 cho thay, nhd ndng eao chieu eao phan t i n g khai thde bang giai phap n l min trong cac Id khoan ddi, nen cdc chi tidu nhu san luong khai thde, nang suit lao dOng tang (khoang 1,4 iln), chl phi

met Id chuin bj giam (khoang 1,4 iln); cdc chi phi khdc (thulc n l , d i u nhu hda, kip) d i u giam so vdi cdng nghp hipn dang dp dgng. Sau giai doan thu- nghipm, cd t h i xem xet tilp tgc ndng cao hon nQ'a chilu eao phan t i n g khai thac

(din 20m hope hon), khi dd hipu qua eua edng nghd se tilp tgc 6ugc ndng eao.

Trong ndm 2011, vi mOt so ly do khdch quan nhu kip vi sai phi dipn an todn chua 6ugc elp phdp su' dung, gidn ty hdnh chua c h l tpo xong do dd chua thye hidn 6iegc vipe dp dung thCr nghipm edng nghd- Hidn nay, gidn chlng ty hdnh KDT2 da dupc c h l tao xong, ede thu tue thCr nghipm, elp phdp SLP dgng kip n l vi sai phi didn an todn dang 6ugc chuin bj. Do vpy, trong nam 2012 so d l edng nghd khai thde Id dpc via phdn ting, chlng giQ' guong khai thde bdng gidn chong ty hdnh, no min hp tran than bang ede Id khoan ddi se 6ugc triln khai dp dgng vd chdc chan se tpo bude dOt phd trong vide ndng eao hidu qua khai thde cde via ddy, doe tai vung Quang Ninh./.

Tai lieu tham khao:

1. Bdo cdo tong kit d l tdi

"Nghidn eCru dp dgng giai phdp nd min trong lo khoan ddi khi khai thde via ddy, doe vung Quang Ninh. Vipn KHVN Md.Hd NOi 2011.

2. Bdo cdo tong k i t 6k tdi:

"Nghidn eCru dp dung cdng nghd khai thde vd ddo Id su' dung kip vi sai phi didn phdng no c h l tao trong nudc" Vidn KHVNMd. Hd NOi 2011.

3. Thilt k l ban ve thi cdng dy dn d i u tu dp dgng thu' nghipm cdng nghd co gidi hda dong bO khai thde cdc via than ddy, doc tai khu Nui Khdnh - Xi nghiep Than Ha Rang - Cdng ty TNHH MTV Than Ha Long - Vinacomin. Vipn KHVNMd. Hd NOi 2011.