NGHIEN Cl)U AP DUNG CONG NGHE KHAI THAC LO CHO XIEN CHEO, CHONG GIJJTBANG DAN CHONG MEM ZRY
CHO DIEU KIEN VIA DAY TRUNG BINH, DOC TREN 45 DO r e i CfiC MO H^N Ld VUNG QUANG NINH
The diagonal longwall mining technology with using the flexible shield ZRY has been so far applied to the mining operation for the medium coal seams having the dip angle over 45P at some Chinese underground coal mines with remarkable Initial achievements. This paper represents some results from the application of thd diagonal longwall mining technology with using the flexible shield ZRY to the medium coal seams having the dip angle over 45° at underground coal mines in Quang Ninh area
ThS. TRAN TUAN NGAN ThS. PHAN VAN VIET KS NGUYEN NGOC GIANG Vien Khoa hgc Cdng ngh$ Mo - Vinacomin
Bien t$p: TS. Truxmg Duv Dw
I Dgt vdn d l
Ket qua ddnh gid so bg cdc tdi lieu dja chit eho thiy, cdc via than ddy trung binh, doc tren 45°, phan b l d h l u het cac khodng sdng vung Quang Ninh vdi tru' lugng tuong doi Idn, khoang 100,5 tripu t i n , chiem 6,3% tong tru' lugng ddnh gid (1.605,8 nghin tan). Tuy nhien, viec khai thdc eae d l i tugng via nay r i t khd khan, phuc tgp hon nhilu so vdi via thoai, nen cdc logi hinh edng nghe khai thde thu cdng dang dp dgng p h i bien tgi cdc md chua ddp ung dugc yeu d u eua san xuit. Vi v§y, doi vdi dieu kipn via die, d n tim kilm logi hinh cdng nghp mdi, phu hgp hon.
TCr dd, trong nhung nam qua, Vipn Khoa hpe Cdng nghp Md dd thyc hipn nhilu cdng trinh nghien cuu, lya chgn cdng ngh$ khai thdc via die vd phli hgp vdi chuyen gia nudc ngodi, cdc md him Id trien khai dp dgng kit qga nghien euu vdo thyc t l san xuit, nhu cdng ngh0 co gidi hda ding b l khiu than bdng mdy bdo, ehong giu bing t l hgp ddn ehing 2ANSH, dp dung cho dieu ki$n via ddy 1,2 + 2,2m dd dugc nghien cuu, dp dyng thdnh cdng tgi md Mgo Khe va Hong Thdi, mang Igi hipu qua thilt thuc doi vdl san xuit. Song, do chi phi d i u t u ddy ehuyen thilt bj Id chg 2ANSH kha Idn, mgt khde, tru lugng cdc via than ndy tgi cdc md it vd khdng tdp tmng ndn cdng ngh0 hipn chua dugc trien khai nhdn rdng cho nhi/ng don vj h i m Id khdc.
Do dd, phan Idn tru lugng via day trung binh {1,2 •*• 3,5m), d i e tren 45° v i n dang duge cdc m6 huy d|ng khai thac bdng mgt s l logi hinh
edng nghp khai thdc thu cdng nhu: cdng nghp khai thdc Id dpc via phan ting, ehong giu bang gid thuy Iuc di ddng XDY; edng nghe khai thac buong thugng, ho|c ddo Id lay than. Cac logi hinh cdng nghe nay cho ndng suit lao ddng vd san lugng Id chg thap, gid thdnh khai thdc cao vd muc dO t i n that tdi nguyen Idn. Tu dd, viee nghien cuu lya chpn cdng nghe khai thdc cho d l i tugng via ddy tmng bmh, die tren 45° d n phai tilp tyc trien khai thye hipn.
II. T i n g quan kinh nghiem dp dung cdng nghp khai thac Id c h g xien cheo, chdng giir bdng ddn m l m tren the gidi va trong nu'dc
Tgi cae nudc phat triln nhu Lien Xd (eu), mdt s l nude Ddng Au va Tmng Quoc, t u nhO'ng nam 1960 ngudi ta da nghien cuu vd dp dyng thdnh cdng so do cdng nghp khai thac Id ehg xien cheo, ehing gii> bdng ddn ehong mem (hinh 1) d l khai thdc cdc via ddy tmng binh, doe tren 45°.
Ban chat cua so d l cdng nghp khai thac nay Id khiu than bang khoan no min tren tuyln guong Id ehg xien cheo mgt gdc nhat djnh (tuy thupe gdc die via than) so vdl phuong via, dudi mpt hp thing ddn ehong ddc biet. Ddn ehong ndy cd khung dugc lam bdng cdc vi ehong kim loai (thep chi> I hogc thep Idng mo SVP) lien k i t
"mem" vdi nhau bdng cdp thep, do vay cdn dugc ggi Id dan ehong mem. Ddn ching mem dugc ldp dgt tgi thugng khdi dilm ddo cheo gdc so vdi phuong vd hudng d i e eua via, tao thanh tuyln guong Id chg xien cheo cd gde die so vdi phuong nam ngang tu 25 ^ 30°. Phia tren dan
KHCNM s o 1/2015* CNKT HAM L 6
Thong tin khoa hoc cong nghe m o
1 - Ld doc via thdng giO; 2 - LO doc via vin tii; 3 - Thuong khdi diim; 4 - Din chdng;
5 - Quy dao dich chuyin din; 6 - Vi tri cic din chdng vd trang thii nim ngang; 7 - Hong sio rdt than.
Hinh 1. Sa dd cdng nghi khai thic 10 cho xHn chio ching giQ" bing din mim ehong dugc trai Idp ludi thep vd phen tre nua
Idm Idp dpm ngan cdch vdl da phd hda. Trong qua trinh khai thdc, edng nhan lam viee phia du'di ddn ehing, thye hipn cde thao tac khoan n l min, dao hao lay than. Than nd ra dudi dan t y trugt tren mdng kim loai xuing cdc phdng thdo than phia ehan Id ehg. Culi mdi ehu ky khai thdc, dan ehong dugc dieu khien t y trugt theo hudng doc dudi dp luc cua dd phd hda va t y trpng cua ddn, vdl khoang cdch dich chuyin bang tien dp khdu guong. Sau mdt sd chu k^
khai thac, se tien hanh thdo thu hdi bdt vi ching a phia chan Id chg vd chuyin len lap dgt bo sung phfa Id dpc via thdng gid.
So d l cong nghe nay cd nhi>ng uu diem nhu:
to chuc san xudt don gian, khdng phai thyc hipn thao tae ehing giQ- guong vd dieu khiln da vach, giam lao dpng thu cdng, cai thien dilu kipn lam vipe va cd t h i cho nang suit lao dgng cao. Ngodi ra. Id ehg dugc chudn bj theo hp thong khai thac cgt dai theo phuong, khoi lugng Id chuan bi cung nhu ty Ip t i n thdt than giam so vdi cdng nghd khai thac buong thugng hoac cdng nghp khai thae Id dge via phan tang. Tuy nhien, nhugc dilm cua logi hinh edng nghe ndy Id vipe dieu khiln di ehuyin dan ehing phu thudc rat nhieu vdo muc dd on djnh chieu day va gdc doc via.
Dgc biet, trudng hgp chieu ddy via giam, do chilu rgng dan ehong khdng t h i thay doi nen vipc dieu khiln ha dan chdng se rdt khd khan
Nham khac phuc nhung han che nay, thdi gian gdn day, Trung Qudc tiep tgc nghien euu hodn thipn kit d u dan ehong mem theo hudng cd su dgng he thing thuy lyc hd trg dieu khiln ddn ching khi djch chuyin. Theo dd, ngudi ta da chl tao thdnh cdng loai ddn ching mem ma
hieu ZRY ed hp thong <Slu khien bang thuy lyc.
Moi bp ddn ehong m l m ZRY dugc d u tao gim:
Xa d i n hudng (1) lien k i t vdi xd ndc bang chit quay, trugt tren vdch via khi di chuyen ddn; Xa ndc (xd chinh) (2) lien k i t vdl xd ddn hudng (ll^n k i t chit quay) va xa che chan (lien k i t chit cung); Xa ehe ehan (3) lien k i t vdi xd ndc (lien kit chit cung) va xd dudi (lien ket chot quay); Xa dudi (4) lien k i t vdi xd che chdn bdng chit quay d l cd the dilu khiln xd dudi thing vdl xd che Chan hogc gap Igi; Piston dilu khiln xa dudi (5) mdt d i u lien k i t vdi xd che chan mOt dau lien f(lt vdi xa dudi, dugc dieu khiln bdng tay ^ l u khiln vd he thong thuy lyc; He thing thuy lye dilu khiln piston xa dudi la hp thong tuan hoan, moi egm tay dieu khien cd 3 tay dieu khiln de dieu khiln xd dudi cua 3 gia (hinh 2).
Nguyen ly Idm viec eua dan ehing mem ZRY duoc t h i hien tren hinh 3, nhu sau: Moi gia
b) Ket cau xich Ii6n ket cdc ddn ehong Hinh 2. eiu tao din chdng mim ZRY
KHCNM S 6 1/2015* CNKT HAM LO
a) Khoan l l min gu'Ong Id chg b) Nap, no min, thdng gio c) Tai than, ha ddn theo tiln dg Hinh 3 Nguyin ly lim viic
ehong dugc ldp ddt, sao cho mOt ddu cua gid la xa d i n hudng (1) bam vdch, d i u cdn lai Id xd dudi (4) ching tryc t i l p xuing tnj via, tgo thdnh 2 dilm ehong co ban cua moi gia. Gia ching dygc cdn chinh sao cho dogn xd ndc (2) ludn d trgng thdi nam ngang, do dd, phy thugc vao chieu ddy via, chilu cao khoang khdng gian ldm vipe phia dudi ddn ching dugc duy tri t u 1,6 -^ 1,8m. Dgc theo chilu ddi Id chg cd do d i e 25 H- 28° so vdi mat phdng ngang, cdc gid ching dugc lap dgt cdch nhau 300 ^ 350mm vd dugc Hdn k i t chdc chdn vdi nhau bang k i t d u xich hodc khdp ban l l , tgo thdnh he thing dan ehing mem dgc chilu ddi Id chg. Khi lap dgt dan ehong, se tien hdnh trai Idp ludi thep bao phu phia tren d l ngan d i t dd roi vdo khdng gian lam vipc phia dudi. Qud trinh khai thde, se khoan no mln khiu guong thanh tung Idp vdi tien dg 0,8m. Sau khi khau than, ddn ching dugc dilu khiln dich chuyen xuing phia dudi vdi budc di ehuyin tuong ung t i l n dp khiu.
Ddn ching mem ZRY da dugc dp dgng khd p h i biln tgi khoang 10 Id chg d Trung Quie
ctJa din ehong mim ZRY
(cdc Id chg thude cac tinh Ha Bac, Thanh Hal, Tan Cuong), khai thdc hipu qua cdc via than cd chilu day tu 1,6 -H 4,5m, gdc die tren 45°. Kinh nghiem cho thay, chieu dai Id chg 80 -^ 100m, cdng suit dgt 300 - 600 tln/ngdy-dem. Hi^n nay, tai md than Hing Viln dang khai thac Id chg via Bl bang so do edng nghe khai thdc nay , vdl ddn ehong logi ZRY36/45L. Via than d i e 45 -^ 55°, trung binh 51°, trong via cd dd kep day 0,3 ^ 0,8m, dd vdch, try via Id bpt kit ben vung, than cd he s l dd kien c l f = 2 ^ 3. San lugng Id chg binh quan 300 tan/ngdy-dem, nang suat lao dpng dgt 4,0 tan/edng
Tren hinh 4 Id mpt so hinh anh ve ddn ching mem ZRY su dung tai eae md ham Id Trung Quic.
O trong nudc, glai doan ti> nam 2001 d i n 2004, Vidn Khoa hoc Cdng nghp Md da phdi hgp vdi Cdng ty than Vang Danh nghien cuu vd triln khai dp dung thu nghiem so do edng nghp khai thdc Id ehg xien cheo su dyng ddn ching mem tgi via 8, Tay Vang Danh. Via than ed chilu ddy tmng binh 3,2m, gdc doc trung binh 82°, Id chg
Din chdng mim ZRY Guung Id chg via Bl md Hdng Vidn Hinh 4. Din chdng mim ZRY si> dung trong cic 10 cho d Trung Qudc
KHCNM S6 1/2015' CNKT HAM LO
Thong tin khoa hoc cong nghe mo
xien cheo ddi 40m, chieu cao tdng khai thdc 31,5m. Ddn ehong m l m diroc ldp ddt trong io dhg Id \og\ ddn phdng, dime cau tao bang cdc xd thep chQ' I noi lai voi nhau theo cdc mdng bdng cac gong vd thanh dinh vi. M6\ mang ddn ehong cd chieu dai 1,0m, cdc mang va cdc xd thep lien ket tong hep bdng cap thep, du'crng kinh * 28mm. Trong qua trinh khai thdc, cac xd thep du'O'C thu hoi a phdn duoi cua ddn va idp tra iai 6" ph^n ddu dan. Phia tren ddn ehong, trdi mot id'p \u/a\ thep B40, lien k i t vd'i nhau bang cdc moi noi diJng ddy thep O 4. Ben tren lu'di phO 2 lop phen tre, tac dung ngdn ddt dd nho Ipt qua ddn vdo khoang trfing 16 ehp'.
Kit qua triln khai dp dung trong thu'e te tai Id chp' vfa 8, Tdy Vdng Danh da khai thde du-p-e khoang 25.000 tdn than, vol cdc chf tieu kinh t l ky thuat co ban cua 16 chp" nhu' sau: san lu'gng khai thdc 50 tan/ngdy-dem, lu'o'ng du'ang cong suit 16 che 18.000tdn/nam; ndng suat lao dpng 1,55 tan/cong; ehi phi thuoc no 395 kg/1000 tan;
chi phi met 16 chudn bi 57m/1000 t i n ; ty le ton thdt than 31 %. V l ea ban, cac chi tieu kinh te ky thudt thip han nhieu so vd'i thiet k l , do trong qua trinh dp dyng dieu kien aa chat thay doi, via biln dpng v l chilu ddy vd goc doe khiln viec dilu khiln ha ddn ehong gap nhieu kho khdn. Vi vay, loai hinh eong nghe ndy dd phai tam dirng a giai doan thLr nghidm ma i<h6ng du'p'c trien khai dp dung pho biln.
Nhin Chung, cong nghe khai thdc 16 eho xien cheo, ching giu' bang ddn mem da du'p'c nghien ciru dp dgng kha pho biln a Trung Quic vd gan ddy dd du'pe eai tien, trang bi thdm he thing thuy lu'c d l ho tra eong tdc dich chuyin dan. Kit qua dp dung da cho thdy su' phu hap ciia sa do eong
nghe khai thdc nay doi vol dilu kien via doc, nen cde chi tieu kinh te ky thudt du'p'c cai thien tit han so vd'i cong nghe khai thde buong 16 thuyng hoac cong nghe khai thac 16 dpc via phan tdng.
Tai vung Qudng Ninh, dd dp dung thii' nghiem cdng nghe khai thdc 16 chp xien cheo, ching giO bang ddn mem phang cho dilu ki^n 16 chp via 8, Tdy Vdng Danh. Tuy nhien, k i t qua dp dijng chu'a dat du'pe nhu* ky vpng do logi ddn ehong m l m phang kho thich Crng vai dilu kien via than c6 chilu ddy biln dong. Tir kinh nghidm dp dung tai mo Vdng Danh eho thdy, de dp dgng hipu qua trong dilu kipn dia chdt viing Quang Ninh cdn nghien ciru ii/a chpn mo hinh ddn ehong mem phii hap ddm bdo khdc phgc du'pe nhO'ng han c h l cua loai ddn ehong m l m sir dung tai 16 chp via 8, Tdy Vang Danh tnrcrc ddy.
III. Nghien ciru d l xudt so' dd cong nghe khai thac 16 chp* xien cheo va ddng bo dan c h i n g m l m cho d i l u ki#n vung Quang Ninh Tren ca sa kinh nghiem dp dgng cong ngh?
khai thac 16 cha xien cheo, ehong giii' bang dan mem tren t h i giai vd trong nuac, dieu kien san trang vFa than ddy trung binh, doc tren 45° vung Qudng Ninh, cho thay: sa do eong nghe khai thac 16 chp xidn cheo, ehong giu' b4ng ddn mem ZRY c6 nhirng u'u diem gilng nhu sa do cong nghe khai thdc ehong giu' bang ddn mem 6' mo Vdng Danh. Ngodi ra, loai dan ehing mlm ZRY CO nhilu cai t i l n so vol ddn m l m phang tnr6c ddy nen co t h i khacphgc du'pe nhO'ng han chl ciia sa d l cong nghe ehong giir bang ddn mem a mo Vdng Danh. Cg t h i :
- K i t cdu dan ehong dan gidn, the tich nho, trpng lu'gng nhp, d l thdp lap hoac thay the cdc chi tilt d l bdo du'O'ng, sii'a chD'a;
Hinh 5. So dd cing nghi khai thic Id chg xiin chio chdng gia bing dan mdm tai via 8, Tiy Ving Danh
KHCMVI S 6 l/20rS* CNICT HAM Ld
Bing 1. Thdng sS ky thuit mdt s6 logi dan chdng mdm Tmng Qudc
"W
rr
1 2 3 4 S 6 7 8 9 10
Ten dac tinh
Chieu ddi xi chinh {xi ndc) Chieu ddi xa che chdn C h i l u ddi xa dudi C h i l u r$ng gid than gid Khoang tdm 2 gid lien nhau Hinh thirc lien k i t giiJa cdc gid C h i l u cao c h i n g 910 cua ddn C h i l u ddy vTa dp dyng phii hpp Gdc doc via
Trpng lypng m i l gid
Dan vj
mm mm mm mm mm
mm mm dO Kg
Khoi iLPcmg ZRY20/30L
1250 850 1200
320 350 LiSn k i t xich 2000 + 3000 2000 + 3000
> 4 5 "
380 + 400
ZRY16/25L 1170 550 1200 320 360 Li6n ket xich 1600 + 2500 1600 + 2500
> 4 6 ' '
-
ZRY36/4SL 1942
960 1200 320 370 LiSn k i t xich 3600 + 4600 3600 + 4500
> 4 5 °
-
- Cu'P'ng dp ching giu' eiia ddn ching lan, kho xay ra hien tu'ong gay, hong xa ddn ehing;
- Khi khdu than se khau h i t chieu day via, khong can d l lai vai than do' dan ehong nhu doi vai loai dan m l m a mo Vang Danh tru'dc ddy.
Khong gian Idm vipc phia dud'i ddn ehing rpng, dipn tieh ehe ehan khong gian Idm viec len d i n 95%, mire dp an todn cao.
- Mii gia ehong co them bp phdn xd duoi du'pe dilu khien bing xi lanh thuy lu'c cho phep thay d l i kich thudc khing gian ehong giii' phia du'di ddn tuang u'ng vdi sg' thay doi chilu day via trong pham vi 1,0m. Ngpdi ra, bO phdn xa duoi cdn CO tdc dgng ho trp dilu khien qud trinh di ehuyin ddn ching. Bay Id mpt dac dilm uu vipt han han so vdi loai ddn ching mem dp dung truwe ddy d mo Vdng Danh.
- Cdc gid ehong duac lien k i t vdi nhau bdng xich tang cudng sg" on dinh vi ching, dong thdi, ddm bao sg' linh hoat cua tuyln guang 16 cha ndn e6 kha ndng thich irng eao trong dilu kipn via biln dpng v l goe die. He thing lien k i t bdng xich h;in c h l dupe hien tupng cac gia ching lan lien nhau trong guang Id chp.
- Chi phi dau t u mot ddy ehuyin thilt bi ddn ching m l m ZRY thap han so vdi ddy chuyin thiet bi 2ANSH, tham chi c6 the c h l tao trong nude loai dan ching nay de chu dpng viee cung Crng vd tilt giam ehi phi d i u tu.
- Sir dgng dan ching m l m ZRY cho phep dp dgng d dilu kipn chilu day via Idn (tdi 4,5m) va trong via c6 dd kep ddy, trong khi khai thae bdng he thing 2ANSH, ehi dp dgng eho vfa ddy dudi
2,5m vd trong vfa kh6ng eo dd kep, hope da kep mong, mem.
Tir nhO'ng phdn tich tren, Vien Khoa hpe Cong nghe Mo d l xuat dp dgng sa d l cong nghp khai thac 16 cho xien cheo, ehing giO bdng dan mem ZRY d l khai thdc cac via than ddy trung binh, die tren 45° tai cac mo than h i m 16 viing Qudng Ninh.
v l loai ddn ehong mlm sCr dgng, hien nay, d Trung Quic co nhilu loai ddn ehong m l m ZRY, vdi md hieu tuong irng dp dgng cho tu'ng miln chilu ddy vfa, bao g i m : ma hieu ZRY16/25L dp dung cho vfa ddy 1,6 + 2,5m; ZRY 20/30L, via ddy 2,0 + 3,0m; ZRY25/35L, vfa day 2,5 + 3,5m;
ZRY30/40L, vfa ddy 3,0 + 4,0m; ZRY35/45L, vfa ddy 3,5 + 4,5m. Do vpy, tiiy thgpc vdo dilu kien vfa than khu vg'c dp dung de xem xet li/a chpn Ipai ddn ching hCi hpp, hoac cd the dat hang c h l tao logi ddn ehong phu hpp vdi dieu kien san trang vfa than ciia tu'ng mo, tiln tdi che tao dan ehong trong nudc thay t h i vipc nhap khau.
Thong s l ky thuat cua mpt s6 loai gian ehing m l m Trung Quoc duae t h i hi^n trong bang 1.
Vdi nhO'ng k i t qua nghien ciru trdn, Vien Khoa hpc Cing nghp Md da phli hpp vdi Cong ty than Hong Thai lap dg' dn ddu t u dp dung thu' nghipm eong nghe ndy tai ede via 9b, 10, khu Trdng Khe II. Mpt s l thpng tin chinh ve dg' dn nhu sau: ma hieu ddn ching ZRY 20/30 (Trung Quic); s l dan ehong, 386 bp (dg' phpng 10%);
eong suit thiet k l 16 ehp 90.000 tIn/ndm, ndng suit lao dpng 5,1 tan/cong, tuang irng tdng 1,3 + 1,5 Idn va 1,5 + 1,7 Idn so vdi 16 chp buIng
KHCNM S 6 1/2015* CNKT HAM L 6
Hinh 6. Sa dd cdng nghi khai thic Id chg xiin chio chdng giu bing din mim ZRY tai md Hdng Thii thupng chdo; ting mirc d i u t u sau thul 60,6 ty
ding; Ipi nhudn rdng Pn = 92.973 tri$u dong; ty Id ldi npi tai IRR = 20,52%; thdi gian hoan v i n T = 3,0 (ndm). D i n nay, d u dn dd dupe Tdp dodn Cong nghi$p Than - Khodng sdn Vi^t Nam thing qua, dg' kiln 16 ehp d i g tien se bat d i u hoat dpng trong ndm 2015.
Ciing vdi mo Hing Thdi, Vipn Khoa hpc Cong ngh$ Mo dang tilp tgc phli hpp vdi C6ng ty than Uing Bl, Cing ty than Nam M l u vd m|t s i dan vi him 16 khdc vOng Qudng Ninh nghidn ciru, d l xudt li,ra chpn ding bp ddn ehing mlm phu hpp
hodn todn eo tinh kha thi d l i vdi dilu ki#n vfa d i e vung Quang Ninh. Vipc then khai dp dgng thu' nghiem thanh cong loai hinh cing nghe khai thde ndy se gdp phdn dam ban khai thde an todn, hieu qua vd triet de phan tru' lupng ede vfa than ddy trung binh, d i e trdn 45° cho ede dan vi san xudt, ding thdi tpo budc phdt triln mdi trong imh vg'c nghien eCru eong nghp khai thde hdm 16./.
Til li^u tham khio:
[1]. Phiing Mgnh Olc, Nguyin Anh Tudn. Bdo cdo vd triln khai ldp dg' dn ddu tu dp dgng cing nghd '*"S '**' "^^''^ "Nghiin ciru cdng nghi khai thic cho vdo thuc tl.
IV. Kit lu$n
. Cdng ngh$ khai thdc 16 chp xien chdo, ching giO' bdng ddn m l m ZRY dd dupe nghidn eu'u dp dgng d l khai thde vfa than ddy trung binh, die trdn 45° tgi m|t s i md than hdm 16 Trung l i u l c vd mang Igi nhO'ng k i t qud khd quan.
Tgi viing Qudng Ninh, trudc ddy da dp dgng thir nghidm cing ngh$ khai thdc 16 chp xidn chdo ching giO' bdng ddn m l m phdng, cho dilu kiln via 8, Tdy Vdng Danh. So d l cing nghd ndy cd nhilu U'U dilm so vdi so d l d n g nghd khai thdc buIng 16 thupng vd so d l cing nghi khai thdc 16 dpc vfa phdn tdng. Tuy nhidn, tgi thdi dilm d l , sir dgng logi ddn m l m phing c i n m|t s i hgn c h l v l kit c l u , n i n chua phdt huy hit hi|u qud cOa logi hinh cing nghd ndy. Vdi logi ddn ching m l m ZRY c6 nhO'ng uu dilm vupt tr|i SP vdi Ipgi ddn ching m l m phing trudc ddy, khd ndng dp dgng trp Igi so d l cing nghd khgi thdc 16 chp xiln chip ching giu' bing ddn mlm
cic via mdng trong cic khoing sing md than him Id viing Quing Ninh". Vl$n Khoa hpc Cdng ngh^ Md, HS NCi, 2004.
[2]. Tru'o'ng Bipc Du. Bdo cdo ting kit d l tdi:
'Nghiin cUu Iga chgn cdng nghi ca gidi hda khai thic cdc via than ddc, cd chiiu diy mdng vi tning binh tgi cic md him Id vCing Quing Ninh:, Vi$n Khoa hoc Cdng ngh^ Ml, Hd N^i, 2009.
[3]. 'Dg in diu tu ip dung thi> nghiim cdng nghi khai thic Id chg xiin chio chdng gll> bing din mim ZRY tai Cdng ty than Hdng Thil - TKV. Vi^n Khoa hoc Cdng nghd Ml, Hd Npi.
[4]. NguySn Anh Tudn, Bdo Hing Qudng, Phan Vdn Vidt: "Nghiin cim di xuit ip dgng sa dd cdng nghi khai thic cic via than mdng vi diy Irung binh, ddc nghiing din ddc dimg vOng Quing Ninh". Thdng tin Khoa hpc Cdng nghd M6, s i 1/2014, Vl#n Khoa hpc Cdng nghd Mo, Hd Ndi.
[5]. Tuyln tdp cdng nghd khai thdc ml hdm 14 Trung QuOo, 1990.
[6]. 4«HaKan H.A, flaioseHKo B.T Mapeaim H.B, B AP; li(i(TOBafl CHcreMa paspaSOTKH; HoBocii6«pcK 1972,302c
KHCNM S 6 imi5' CNKT HAM LO
