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Thong tin khoa hoc cdng nghe mo w NGHIEN CCJrU fip DUNG CONG NGHEDf iO LO THlTONG DOC BANG MAY KHOAN DlTOTNG KiNH LOTN TAI CONG TY THAN IVIAO KHE During the execution of the raises in coal for prepari[.]
Thong tin khoa hoc cdng nghe m o w NGHIEN CCJrU fip DUNG CONG N G H E D f i O LO THlTONG DOC BANG MAY KHOAN DlTOTNG KiNH LOTN TAI CONG TY THAN IVIAO KHE During the execution of the raises in coal for preparing the sloping coal seam mining system with the conventional driving and manual drilling and blasting technology as present, some difficulties in the links of ventilation, transportation and water drainage „ have been coped with, leading to low labor productivity as well as low driving speed The driving technology with using large diameter dniling machine for the inclined drift can overcome the above difficulties, ensunng the increase of the labor productivity and dnving speed Dat van de K§t qua danh gia trip lu'O'ng khoang sang than Mao Khe cho thay, pham vi tu* mu-c -400 -^ -80 CO tong tru* lu'gng khoang 189,8 trieu t^n, do, trO lu'ang cac vfa than doc tren 45° khoang 110,4 trieu t§n, chiem 58,2% t6ng tru' lu'ang danh gia Theo cac so lieu thdng ke nam 2010 va 2011, san lu'O'ng khai thac tiJ cac khu vu-c vfa doc cua Cong ty than Mao Khe chiSm khoang 30 -^ 40% tong san lu'O'ng toan mo Hien tai, d l khai thac cac via d6c, Cong ty dang ap dung chu y4u nhOng sa cong nghe khai thac sau sa cong nghe khal thac cot dai theo hu'dng d6c SCP dung to hgp dan ch6ng 2ANSH; sa cong nghe khai thac chia Idp nqang nghieng {hoac chia Idp bang) va sa 6d cong nghe khai thac 16 dpc via phan t^ng Mgt vJin d^ kho khan hien la chuin bj cac sa c5ng nghe khai thac phai dao mot kh6i lu'ang Idn cac dudng 16 thu-gng d6c than Tfnh toan sa bp cho thiy, de dat k6 hoach san lu'ang khal thac nam 2012, C6ng ty se phai thi cong tu|1200 ^ 1400m 16 thu-p-ng d6c H ^ than, bao TS TRUaNG DD'C DU' TS D A O H O N G Q I J A N G KS PHAN VAN V I ^ T Vidn Khoa hoc Cdng nghd /Wd - Vinacomin ThS NGUYEN V A N T U A N Cdng ty TNHH MTV than Mao Khd - Vinacomm lam tang muc dp nang nhpc cong viec, tieu ton nhieu thdi gian va nhan luc; - Kha nang nang cao han nua nang suat va toe dao 16 se rat kho khan NhOng kho khan tren da dat yeu c4u c4n nghien cuu doi mdi cong nghe dao chfing 16 thup'ng d6c than theo hudng nang cao muc ca gidi hoa Do do, Tap doan da giao cho Vien Khoa hgc Cong nghe Mo - Vinacomin va Cong ty than Mao Khe ph6i hap thuc hien 6h tai "Dao 16 thuang d6c bing may khoan dudng kinh Idn" (Quyit djnh giao d§ tai so 701/QD -Vinacomin) vdi muc tieu nang cao muc an toan, cai thien dieu kien lam viec, tang nang suat lao dong, dac biet la diy nhanh t6c dao 16 thug-ng doc co dieu kien thi - Cong tac thong gio dao cong kho khan, nham dam bao 16 bing he thong thong gio cue kha nang chuin bj kjp thdi dien bg Tru'dng hg'p dudng 16 co khai thac tai cac khu vuc via chieu dai ldn, thi cong theo doc, dap ung nhu cau san hudng tu dudi len via co luang mo cang tang cao chua metan, c6 the xay hien lup'ng tich tu metan tai II Tong quan kinh nghiem guang 16, gay nguy ca mat an dao Id thup'ng ddc va toan; ngoai nirdc Tai nhCrng nude c6 n§n - Cong tac van chuyen vat lieu di^u kien doc Idn cong nghiep khai thac mo phat gom hai loai sau:(1) -16 thu'p'ng khdi diem 2ANSH (thupng cot 2ANSH) sa d6 cong nghe khai thac cpt dai theo hu'dng doc si> dung to hop ca gidi hoa dong bg 2ANSH; (2)-16 thu'png noi (thu'ang bloc) sa 66 cong nghe khai thac chia Idp ngang nghieng (hoac chia Idp bang) va sa cong nghe khai thac 16 dgc via phan tang Dy kien, kh6i lu'g'ng 16 thu'p'ng doc can thi cong nhOng nam tdi se tang cao han nOa theo ke hoach tang san luang khai thac cua mo ThLfc hien thi cong cac 16 thu'p'ng doc, hien Cong ty than Mao Khe dang ap dung cong nghe dao 16 bang khoan no thu cong, ch6ng giu' bing vi ch6ng g6 Ii6n vi Tuy nhien, qua trinh ap dung thyc t^ c6n gap mgt s6 t6n tai nhu: KHCNM SO 12/2012* CNKT HAM LO Thong tin khoa hpc c6ng ngh^ nn6 W" then tren t h l gidi nhu Nga, Ukraina, v.v d^o c^c duang 16 thup'ng d6c than, ngudi ta da nghifin cuu va dua vao u'ng dyng ph6 bien cong nghe dao 16 su dyng m^y khoan dudng kinh Idn Kit qua ap dyng cho thiy, da cSi thi$n rit tot dllu kien l^m vi$c, nSng cao muc dp an toan lao dOng, dac biet la tang n^ng suit lao dpng va t6c dp thi c6ng dudng 16 so vdl cdng ngh0 dao 16 bing phuang ph^p th6ng thudng Tie dg dao 16 c6 t h l dat tdi 160 -i- 180m/thang, nSng suit lao dpng dat tdi 0,8 -^1.1 m/cdng Tuy thupc myc dich su dyng v^ thdi gian ton tgi c i c dudng 16 tung trudng hp'p cg the, cac nude tren t h l gidi thudng ap dung mot hai sa dao 16 thup'ng die bang may khoan duang kinh Idn dudi day Sty cong ngh^ ddo Id tht^gng doc bing md' r^ng l6 khoan dwong kinh l&n Theo sa d6 c6ng ngh$ d^o 16 nay, trudc thi cflng dudng 16, tiin h^nh khoan mOt l6 khoan dudng kinh Idn ((|i500, ((»850, (t)1100 ho$c (|)1300mm) dpc theo trgc vd trgn todn bO chilu ddi dudng 16, Tu' l6 khoan dudng kinh Idn se md rOng bing khoan nfi ho§c bing bOa ch6n d i n tilt di$n c i n thiit vd ching giO' tao thdnh 16 thup'ng Sa d l cdng nghe ddo Id thup'ng d i e bing md rpng l5 khoan dudng kinh Idn t h l hi^n tr§n hinh Sa d l cdng ngh$ ddo 16 thup'ng d i e bing md r^ng l6 khoan dudng kinh Idn co nhii'ng uu dilm n i l bdt sau: - Cd t h l dp dgng cho vi^c dao tat ca cdc loai thup'ng d i e than c6 di$n tich tilt di$n ddo b i t kjf Dudng Id ddo c6 t h l su dgng vdi nhilu myc dich khac nhu; di lai, thdng gid, v|ln tai, thodt nude - Nhd cd l6 khoan dudng kinh Idn khoan vupl trudc nen vi0c thdng gid qud trinh ddo 16 dup'c thyc hipn bing thdng gi6 chung thay vi thdng gid cgc b|, dllu kl$n Idm vi^c dup'c cdi thl^n, d^c bipt loai tru hodn todn nguy cc tich ty mfitan tai guang Id - L khoan dudng kinh ldn cho phep thdm dd trudc guang qua trinh ddo 16 vd tao m§t thoang nang cao hieu qua cdng tdc ddo md rpng guang, gidm chi phi cdng tdc khoan no ddo pha guang - Khi dao Id theo hudng tir dudi len, Id khoan dupe si> dyng de van tai vat lieu tu tren Hinh Sa dd ddo Id thirong ddc bing md r0ng l5 khoan dirdng kinh ldn KHCNM S 12/2012 * CNKT MAIM LO Thong tin khoa hoc cong nghe mo xuong thay vi phai van tai nguac theo chieu doc, d6, giam chi phi nhan lyc va thai gian khau van chuyin vat Iipu - Trong trudng hg'p dao 16 t u tren xudng Id khoan duac su dung d l van tai than dao 16 va thoat nude guang, dong thai vat lieu cung dup'c van tai t u tren xudng, qua dan gian hoa quy trinh cdng nghp dao 16 ^'•^'•jyf""^ va nang cao muc an toan - Nang suat lao dgng vd toe dp dao 16 dug-c nang cao han so vdl cong nghe dao 16 bang Khoan l6 khoan thdng din hu^ng b Khoan md r^ng ddn tidt di&n khoan n l thdng thudng du^ng Id theo thidt kd Nhuac dilm cua sa dd cdng Hinh Sa d6 ddo Id thu&ng ddc bdng thidt bi khoan todn tidt didn du&ng id nghe dao 16 la kha nang khoan cac Id khoan dudng kinh vay muc dd an toan lao Idn (PSO) d mo Mdng Duang Idn phu thude vao dac diem ddng duge nang cao, dilu kien Ket qua la da khoan duac cac dllu kien dja chit via than Via lao ddng dugc cai thien, dac Id khoan dudng kinh i^QOO, than tai khu vyc ap dung c i n biet tang nang suit va tdc dd ehilu dai khoang 30m giua 16 dam bao dp I n djnh ve chilu dao 16 c'ao han nhilu so vdl doc via phan ting trung gian day va goe d i e via cdng nghe dao 16 bing thu vdi 16 dgc via thdng gio va 16 Sc cong nghe dao Id cdng doc via van tai Cac Id khoan thip(mg doc bang thiet bf Nhugc dilm: Nhuac dilm duac su dung vdi muc khoan toan tiet dien diFong Id ca ban cua sa dd eong nghe dich tieu than qua trinh Ban chit eua sa dd edng dao 16 bang thiit bj khoan todn dao cac dudng 16 doc via eua nghe dao 16 la su dung cac tilt dien la chf phu hgp d l thl moi phan ting khai thac Nhd thllt bi khoan dac biet d l khoan cdng eac dudng 16 khdng cin CO Id khoan dudng kinh Idn da toan tilt dien dudng 16, vi vay, chdng giu nhu cac 16 thugng diy nhanh duac t i c dd dao Id, dudng 16 thi cdng theo sa d l thao than, thdng gid, van tai Ve dap ung yeu cau chuin bj dien edng nghe chu y i u la ca ban, 16 thugng dao bang kip thdi cho he thdng khai thac nhung dudng 16 khdng c i n cdng nghe khdng dung lam PSO phai chdng giu Cong nghe i l l ngudi dl lai Q mo Vang Danh, khal cho phep dao cac dudng Tai Viet Nam, cdng nghe thac via 8, khu Tay Vang Danh 16 thuang vdi goe doc b i t dao Id thuang die bang may bing he thdng dan chdng cung ky, dudng kinh dudng 16 t u khoan dudng kinh ldn bude da dp dung may khoan dudng 0,91 ^ 3,66m, chilu dai dudng d i u da dugc nghien cuu ung kinh ldn BrA-2M de dao cae 16 16 dao tdi da tdi 500m, tham chi dung mpt so sa dd he thugng cdt Viec thl cdng cac 16 CO thl dat tdi 600m su dung thing khai thac via doc d vung thugng cdt dugc thuc hien thiit bi khoan 81R hang than Quang Nmh va da eho bang each khoan mdt 16 khoan Robblns cua Hoa Ky san xult nhung kit qua nhit dinh dudng kinh c[)500 dge theo true Sa d l cdng nghe ddo 16 Trudc day, may khoan vd tren toan bp ehilu dai bang thllt bj khoan todn tilt dudng kinh idn A5C-4 (Lien Xd dudng 16, sau Id khoan tllp dien CO nhung uu, nhug-c dilm cu) da duac ap dung thu tuc dieac md rgng va chdng nhu sau: nghiem cdng nghe khai liln vi bang gd d ca phia, tilt Uu dilm: Cho phep ca gidi thac Id dpc via phan tang kit dien 2,25m2 (1,5-5-1,5m) Kit hoa hodn toan qua trinh dao Id, hgp vdl may khoan dudng kinh qua dp dung eho thiy, nhd cae KHCNM S6 12/2012* CNKT HAM LO âã Thong tin khoa hgc c6ng ngh$ m6 l l khoan djnh hudng (|)500mm, vi$c dao chong cac 16 thugng dugc tiin hdnh rat thu^n Igi Ld thugng cgt khal thdc thl dilm c6 chilu ddi 32 -^ 33m dugc thl c6ng hodn chinh thdi gian khoang tu -^10 ngdy (bao g i m cd cdng tdc khoan dmh hudng (t)500) Dudng 16 thi cdng theo phuang phdp ndy dam bao 6n dmh phge vy cdng tdc van tai than vd thdng gid Giai doan g i n day mdy khoan dudng kinh Idn BrA2M4 tiip tyc dugc nghi§n cuu dp dung sa d l cdng ngh§ khai thac 16 dpc via phan ting tgi mo than Dong Vdng Theo sa cdng nghe ndy, cdc lo khoan dudng kinh Idn ^B50 dugc khoan giOa hai phan ting khai thac, chilu ddi lo khoan khoang -^ 10m, khoang edeh theo phuang giua cac Id khoan tu -^ 8m Qua trinh dp dyng thuc t l da cho thay, viec thi cong Id khoan dudng kinh Idn hodn todn kha thi, cac Id khoan on dinh, ddp ung yeu cau cho cdng tdc thdng gid, van tai vd da gdp phin tang hieu qua phd nd phan ting qua trinh khai thac III Nghien CLPU de x u l t so* cong nghe dao 16 thu'p'ng ddc d i l u kien mo Mao Khe Tren eg sd tong quan kinh nghiem dao Id thugng doc su dgng mdy khoan dudng kinh Idn tren t h l gidl vd kinh nghidm su dung may khoan dudng kinh Idn tai cac mo than h i m 16 vung Quang Ninh, de tdi de xult dp dung "Sa ddo 16 thugng d i e bing md rpng Id khoan dudng kinh Idn" de thi cdng 16 thugng khdi dilm 2ANSH vd thugng n l i cdc sg d l chuin bj via d i e t^i md than Mao KhS PhiJ hgp vdi sa d l ddo 16 d l xult dp dgng, ding b | thiit bj khoan dudng kinh Idn dugc lya chgn Id logi mdy khoan 6rA2M-4, ddy Id loai mdy khoan dd tung dugc su dgng thdi gian g i n ddy tai md than D i n g Vdng Qud trinh dp dgng thyc t l dd cho thiy, logi mdy khoan ndy hodn todn phii hgp vdi dac dilm dllu ki$n dja chit ky thu^t cdc md than him 16 vung Qudng Ninh D$c tfnh ky thu^t mdy khoan BrA2M-4 dugc gidi thieu tgi bang Bdng Ddc tinh k^ thu$t mdy khoan Hinh Mdy khoan duimg kinh Idn STT Tin thdng sd Dwdng kinh dinh mijc - Khi khoan thang - Khi doa ChiSu sSu khoan t6i da Toe dS khoan - Khi khoan - Khi doa den (JSao -Khidoad^n+llOO G6c khoan Pham VI dilu chlnh toe dt> khoan Dan vj Solirgmg mm mm m 500 850+1100 150 m/phut m/phOt m/phCit d« m/phijt Toe diiu ph6i (khi tlln ho$c ICii) m/phCit Lire truyin din - Khi tien - Khi lui T6e dd v6ng quay d n khoan HSnh trinh khoan 10 11 C6ng suit Ap suat thuy lu'c 5.2 120.0 80.0 1,25±0,1 2.00 ±0,1 750 (+30;-3) 18,6 12.6 m 1.12x0,67x0,8 Kleh thu'd'C (ddi rOng cao) 13 kg Trpng lu'O'ng mdy Tn?ng lu'iyng todn bO to hp'p thiet bj kg N/mm Lu'c khcing eat cua than KHCNM SO 12/2012 * CNKT [lAM LO 8.4 4.8 4.0 +45+-f90 0*1.6 kN kN v6ng /giay mm Kw (MPa) 12 14 15 BrA2M-4 BrA2M-4 1200 7660 300 Thong tin khoa hqc cong nghe md IV T h i i t ke thu* nghiem cong nghe dao 16 thu'O'ng ndi (thu'p'ng bloc) bang may khoan du'o'ng kinh ldn d mo IVIao Khe Tai md than Mao Khe, c6 t h l dp dyng edng nghe dao 16 bang md rpng Id khoan dudng kinh Idn d l thi cdng Id thuang khdi diem 2ANSH hoac Id thugng ndi Tuy nhien, viec thCr nghipm se uu tien dp dyng trudc doi vdi dudng 16 co dieu kipn thi cong thudn lgi nhit Theo dd, Vipn Khoa hpc Cdng nghe Md - Vinacomin va Cdng ty than Mao Khe cCing thing nhit lya chpn thiit k l dp dung thu nghipm cdng nghe de thi cdng 16 thugng noi, dudng 16 co ehilu dai khdng Idn (15-^ 20m), viec thi edng lo khoan dudng kinh Idn se thuan Igi han D l i vdi 16 thugng edt 2ANSH cd chilu ddi Idn (din 135m) se dugc triin khai dp dung thu nghiem sau, tren ca sd kinh nghiem thl cdng Id thugng nli mdc -150 •;• -80 Vj tri dy kiln thi cdng Id thugng noi d i u tien thupc phan via Idp try via 6, giOa phan ting muc -130 vd phan tang muc -116 Dgc dilm dilu kipn dja chat - ky thudt khu vyc dy kiln thi cdng dudng 16 nhu sau: - Chilu day trung binh phdn via: 3,58m - Gdc doc via tmng binh: a = 54°; - Dgc dilm da kpp- Trong phdn via Idp trg via c6 chua 01 Idp dd kpp, chieu day 0,12 -i-0,19m, tmng binh 0,16m, thdnh phin dd kep Id set kit; - Og kien co cua than: f = -^2; - Tinh dong nhit cau tgo via: Via than cd c l u tgo tuang d l l ding nhat, mue dg nut ne ft Ld thugng nli muc -130/-116 di.ytyc thiit k l vdi dien tich ddo Sa = 4,5m2, dien tich su dyng, Ssd = 3,8m2, gdc die dudng Id a = 54°, chilu ddi dudng 16 L = 14,4m Vdi cdng nghe lua chgn, 16 thugng dugc dao Can eu k l hogch khai thdc cua Cdng ty than Mao Khe nam bdng phuang phap md rgng Id 2012, khu vuc dugc lua chgn khoan dudng kinh Idn (|)500 dp dyng thu nghiem tai 16 chg theo hudng tCr tren xuong dudi ngang nghieng via 6, cdnh Bac, Viee md rgng 16 khoan bang khoan n l hogc bang bua chen, than phd guang se ty chay qua 16 khoan xuing mang cdo 16 dgc via phdn ting muc 130 Thdng gio cho guang Id bing thdng gio chung qua lo khoan dudng kinh Idn Sau md rpng 16 khoan d i n tilt dipn cin thllt, dudng 16 dugc ching glu' bang vl chong sat SVP-17 hinh thang, bude ching 0,5m/vl, n6c vd hdng chen gd, mil vi ching dugc bat gilng lien kit giOa cdc vi theo chilu die Sa d l ddo Id thugng noi bang md rpng Id khoan dudng kinh ldn the hien trdn hinh Theo tinh todn thllt k l , vlpc dp dyng eong nghp ddo 16 thugng d i e bang md rdng lo khoan dudng kinh Idn eho phep nang eao ndng suit va t i c ddo Id, toe dao 16 6m/ngay-dem, nang suit lao dgng 0,33m/cdng (vdi edng nghe dao 16 thu edng hien tgi cua mo, t i c ddo 16 dat 3,6m/ngay-dem, nang suit lao dgng 0,2m/cdng) Mdt sd chi tieu kinh t l ky thuat dao 16 thuang n l i bang md rdng Id khoan dudng kinh Idn dugc tong hgp bang b) Md rdng i5 khoan vd chong giu" tao Id thuang theo hu^ng tCr trdn xudng Hinh Sa dd ddo id thwang n6i bdng md rdng l5 khoan dwdng kinh Idn a) Khoan lo khoan dirdng kinh 0500 KHCNM S 12/2012* CNKT HAM L W' Thong tin khoa hgc c6ng ngh$ md Bdng Tdng hop mdt s6 chi tidu kinh tS ky thudt ddo Id thwong ndid l l vdl 16 thugng n l i se c6 ^ nghTa rit quan trgng, Idm eg sd S£> dijng mdy khoan dirdng kinh Idn triin khai dp dyng d l i vdi 16 Don vf Sd Iwo^g TT Ten chi tiiu thugng khdi dilm 2ANSH, d§c bipt Id md hudng nghi§n +2 DO kifin c6 cua than cCru mdi d l ndng cao muc dp 500 Bu'dyng kinh 15 khoan mm eg gidi hda ddo ching Id m' 4,5 Difin tich ti^t difin dSo \d thugng d i e than nhdm rut ngan thdi gian chuin bi •\A.A Chi^u dai du'o'ng 16 m khai thdc cdc via die./ Thfip SVP-17 V$t lifiu ch6ng TAi li$u tham khao m 0,5 Bu'd'C ch6ng Bdo cdo ting kit d l tai: m/chu ky Ti6n dao 16 "Nghien cCru khai thdc cac via ddy ddc md Mdng Duung bdng m/ngay Tfie dao 10 mOt ngay-dfim 16 d(?c via phin ting PSO" Vipn - dfim Khoa hpc Cdng ngh$ Md 1985 18 Nhan lye lam vific mOt ngay-dfim ngad'i Bdo cdo ting kit d l tai: 0,33 10 Nang suSt lao dOng m/cOng "Nghien cuv dp dtjng c^g ngh$ khai thdc bing ddn chSng phing 11 Chi phi vi eh6ng vl/m khdng phSn mang cho via Tay 12 Chi phi gO mVm 0,4 Vang Danh" Vi#n Khoa hpc Cdng kg/m 1,0 13 Chi phi thuOc no (NTLT) nghpMd 1989 Thiit k l ky thudt thi cdng: 14 Chi phi kip no (KBV-80) cai/m "Ap ditng thu'nghidm cong ngh$ Chi phi khoan 16 khoan du'6ng khai thdc 16 dpc via phan tang, 15 m/m 1,0 kinh Idn sCr dijng mdy khoan dutrng kinh Chi phi nhan lyc khoan cOng/m 0.31 Idn cho via 7B va via khu Daig Vang Danh - Cong ty than Dong Chi phi dien nang Kvtfh/m 16 Von^ Vipn Khoa hpc Cong 0.4 Chi phi nu'o'c sach m^/m nghp Mo- Vinacomin 2006 Bdo cao: "Nghien aru danh sue lao dgng thu cdng V Ket luan Thl cdng 16 thugng khau van tai vat Iipu nhd vgn tai gia hoan thi$n cong nghe co giai than chuin bj cae sa dd hp tu tren xuing thay vi vgn tai hoa SU' dung to hop dan chong thong khai thae via doc bing nguge tu dudi len dilu 2ANSH t9i Cong ty than Mgo cong nghe dao 16 truyin thong kien dg d i e Idn; gidm khii K/ie" Vipn Khoa hpc Cdng nghp khoan no thu cong nhu lugng cdng tdc khoan n l Mo- Vinacomin 2010 Vo Trpng HiJng, Nguyin hipn gap mgt s l kh6 khdn dao pha guang Nhd khic cdc khdu thdng gid, vgn phge dugc nhung hgn c h i ndy Vdn Dudc: "Cong nghe thi cdng md nang suit vd toe dp ddo Id cong trinh nginf Hd Npi -1997 tai, thoat nude, mue dg an toan dugc nang cao so vdi cong UJexypAMH B.K SaAaMHUK va dllu kien lao ddng cdn han nghp dao 16 khoan n l thu no ropHbiM pa6oTaM, nposeAec h i , khiln cho nang suit lao cdng nhu hipn HMK) M KpenneHMK) ropHbix Bbipaddng vd toe dp dao Id thudng Kit qua tinh todn thllt 60TOK MocKBa, Heflpa, 1985 khong cao BoHflapeHKO TexHononifl k l dp dyng thu nghipm cdng Cdng nghe dao 16 doc su nghp ddo Id thugng n i l bing paapaSoTKH nnacxoBbix wecTOdung may khoan dudng kinh md rpng l5 khoan dudng kinh pojKfleHMM flHenponerpoBCK, Idn, da khac phuc dugc nhu'ng Idn da cho cdc chi tieu kinh te VKpaiiHa, 2002 TexHononifl sbieMKn ypyrokhd khan tren, cho phep thdng ky thuat tuang doi t i t , hoan gid chung dao Id qua Id toan cd tinh kha thi d l triin khai naflarau^Mx nnacTOe KniiiuHH yranb Ky36acc, 2009 khoan dudng kinh Idn, vay, dp dung thu nghipm vdo thyc A.K nopuencKMii npAsewdilu kipn Idm viee tgi guang te san xuat Vipe triin khai dp duge cai thipn tdt; giai phong dgng thu nghipm thdnh cdng Han paapaSoTKa ynanbHbix MeeropOAfRBHviPi MocKsa, 1998 - - • KHCNM s o 12/2012 * CNKT 11 \M LO ... ddi lo khoan khoang -^ 10m, khoang edeh theo phuang giua cac Id khoan tu -^ 8m Qua trinh dp dyng thuc t l da cho thay, viec thi cong Id khoan dudng kinh Idn hodn todn kha thi, cac Id khoan on... thu^t mdy khoan BrA2M-4 dugc gidi thieu tgi bang Bdng Ddc tinh k^ thu$t mdy khoan Hinh Mdy khoan duimg kinh Idn STT Tin thdng sd Dwdng kinh dinh mijc - Khi khoan thang - Khi doa ChiSu sSu khoan t6i... rgng 16 khoan bang khoan n l hogc bang bua chen, than phd guang se ty chay qua 16 khoan xuing mang cdo 16 dgc via phdn ting muc 130 Thdng gio cho guang Id bing thdng gio chung qua lo khoan dudng