Thong tin khoa hoc cong nghe mo w DANH GIA HIEN TRANG VA DE XUAT HO CHIEU CHONG GIlT LO CHO HOP LY CUA CONG NGHE KHAI THAC CHIA LOTP NGANG NGHIENG trong flieu kien dja chat ky thuat mo than Mao Khe In[.]
Thong tin khoa hoc cong nghe m o w DANH GIA HIEN TRANG VA DE XUAT HO CHIEU CHONG GIlT LO CHO HOP LY CUA CONG NGHE KHAI THAC CHIA LOTP NGANG NGHIENG flieu kien dja chat ky thuat mo than Mao Khe In the period of 2003-2006 all the horizontal and inclined lonwalls at Mao Khe Coal Company have been supported with hydraulic shields and to the year of 2007, they were replaced with hydraulic moving support XDY However, after the utilization time at the areas having thick and sloped coal seams, the hydraulic moving supports have revealed some disadvantages that need to be overcome In this paper depending on the results from the evaluation of the real situation of the tongwall support works, the authors propose the supporting patterns for the longwalls and sublevel gateways as well as the face extraction and reasonable top coal recovery under the geological conditions at Mao Khe coal mine Khodng sang than Cdng ty than Mgo Khe qudn ly vd khal thac cd tru lugng cac via ddy ddc chilm khoang 43,5% tdng tru lugng huy dgng vao khai thac (tinh din mue -150), tap trung d hai canh, cdnh Bic vd cdnh Nam Tu nam 2003, d l khai thac phin tru lugng nay, Cdng ty than Mao Khe da dp dgng he thong khai thac chia Idp ngang nghieng (hope chia Idp bdng) su dung vl ehing thuy lyc dan kit hgp vdi xd hdp hoac gia thuy lyc di dgng Viec dp dgng he thong khai thae da giai quyit dugc cac v i n d l : giam t i n thit than, nang cao san lugng khal thac, nang suit lao ddng vd muc dp an todn lao dpng so vdl cae hp thing khai thac via ddy die da dp dung trudc day Trong glal doan tu nam 2003 den nam 2006, t i t ca cdc 16 chg ngang nghieng tgi Cdng ty dugc chong glu bang vi ehing thuy lye gdm cgt ehing thuy lye dan kit hgp vdi xd hop Tu nam 2007 d i n TS TRl/aNG BU-C DU' ThS, T R A N T U A N N G A N Vidn Khoa hoc Cdng nghd Md - Vinacomin ThS N G U Y £ N ANH T U A N ThS PHAMVANDONG Cdng ty TNHH MTV Than Mao Khd thuc hien chi thj cua Tap dodn CN Than - Khodng san Vipt Nam (Vinacomin) v l han ehe dp dgng cpt chdng edt thuy lue dan kit hgp xd hop cdng nghe khai thac cd trdn thu hoi than noe, eac 16 chg khai thde ehia Idp ngang nghieng tai md than Mao Khe dwac chuyin sang chong giu bing gid thuy lye di dong logi XDY Qua thdi gian dp dung eho thdy, tai mgt s l khu vyc via ddy, die, than ed tinh chit mim yeu, vlpc su dyng gia thuy lue di dgng 16 chg da bdc Id cdc nhugc 6\em nhu: muc dp on dmh cua gid thap, vl chdng hay bj xd lech, khd dl chuyin, thgm ehi dd vi ching Cde tdn tai tren lam anh hudng din viec tang nang suit lao dgng va san lugng khal thac Id chg Theo bao eao thuc hien khoi lugng mo nam 2011 va k l hoach san xult cac nam tiip theo, san lugng khal thde edc via die tu cdc Id chg dp dung he thing khai thac chia Idp ngang nghieng chilm tu 35 -;- 40% ting sdn lugng khai thdc eua todn Cdng ty Do vay, de nang eao hgn nua hieu qua khai thdc cde via ddy, d i e bing sa d l cdng nghe khal thdc chia Idp ngang nghieng tgi Mao Khe, viee ddnh gia ting hgp cac kit qua da dat dugc d l tu dd nghien euu hoan thien ho chilu ching giu, quy trinh khai thdc vd cac bien phdp ky thuat an Id rit c i n thllt I Hien trang va k i t qua dp dung cdng nghe khai thac Id chg chia Idp ngang nghieng tai Cdng ty than Mao Khe Theo ddnh gid ting hgp, khu vuc cdc via d i e cua Mao Khe dp dgng edng nghe khal thac 16 chg chia Idp ngang nghieng id nhung khu vuc via CO dieu kien dja chat phue tap: chieu ddy via biln dgng nhieu vd cd c l u tao phuc tap; dd vdch va dd try via khu vyc thay doi tu mdm din eung, cd nhOng khu vyc dd vach vd dd try via Id nhung I set kit rit d l trugt Id; tinh chat, dp eung cua than thay d l l phuc tap; KHCNM s o 12/2012 * CNKT HAM LO Thong tin khoa hqc c6ng ngh# nn6 W' mu'C dg chua vd thodt eao Tat ca cdc yeu t l tr6n gdy anh hudng va khd khdn Idn din edng tae khal thdc Id chg, Trong nhu-ng nam qua, d l khal thac cae khu vyc via die, Cong ty da dp dgng chu y i u logi hinh cong nghp khal thde 16 dge via phdn ting vd sa d l cdng nghp khai thde chia Idp ngang nghieng, khiu than bang khoan n l min, dilu khien dd vach bdng phuang phdp phd hda toan phin, ehing tdng cudng guang khai thdc bing cpt ehing thuy lyc dan kit hgp vdl xa hpp hogc gid thuy lye di ddng Trong giai tu nam 2003 d i n nam 2006, t i t cd cdc 16 chg ngang nghieng tai Cdng ty duge chdng glu bang vi chong thuy lyc gim cdt chong thuy lyc dan kit hap vdi xa hop Glal doan tu nam 2007 d i n nay, Id via phdn tdng vd Miai thdc dva Hinh Sa dd cdng nghd khai thdc.dpc thuc hien chi thj cua Tap doan khai thdc bdng gid thuy lyc di dgng ldp ngang nghidng, chdng giir guang v l viec han c h i dp dgng vl ehing edt thuy luc dan vdi xa chong tdng cudng bdng khudn phin ldn than hg tran) Sau do, hdp he thong khai thac 16 gd cat mdn khdp Song, cdng ty da dp dyng ching tat ca chg CO trin thu hdi than ndc, khu vyc cd chilu ddi theo cdc dudng 16 bdng thep v6m, cdc Id cha khai thde chia Idp phuang vd dp lyc md Idn, cac ddnh khudn cdt m6n Widp De ngang nghieng dugc chuyen dudng 16 dge via phdn t i n g tgn thu edc vi ehing thep, sang ching giO' bang gia thuy ehing bang go thudng bj nen qud trinh khai thdc dogn Id dpc lyc di dgng loai XDY eua Trung bep: cae xd bj gay, cpt bj gay via phan tang cua phgm vi nga Quic (hinh 1) todc, qud trinh khai thdc, ba vdi Id chg {guang khau) dugc chong chuyin doi san^ ' Hi$n trang cong tac chong cdc dudng 16 phai ching ching bang vi g l vd ddnh bo giu' 16 dQC via phan tang va xen lai rit nhilu iln (hinh 2) De sung gdnh tdng cudng bang cgt gwang khau cua id chg chia l&p gidm bdt c6ng tdc chong xen, ching thuy lyc dan - xd hop Cong ty da nghien euu b6 tri ngang nghieng Vdi hg ehilu ndy, 16 dpe via edc 16 dpc via phan tang sang - Doi vdl 16 dge via phan phan ting ching ddp bao ddo bdm vdch via Tuy nhien, ting (dudng Id cao thoang, I n dinh) khil lugng edng vpc ehong x6n, Trudc day, c6ng nghp eung c l cho cdc dudng id phyc vy t l cho cdng tdc thdng khal thac 16 dpc via phan tang khdng giam, ma cdng tac khai gid, v|in tai than va di lai va cdng nghe khai thdc chia Idp thac Id chg ggp rit nhilu kho qud trinh khai thac cua mil ngang nghieng, cdc dudng Id khan, khdng gian vi ching phan tang dgc via trung gian dugc ching cuoi cung cug gugng 16 chg - Doi vdi Id chg (guang bdng thep CBn-17(22) tilt dipn ngdeh thudng bi tgt Id ddn d i n khiu ngang nghieng): hinh vdm, Id dpc via phan ting 16 chg yiu Cdng tdc thu hoi Trong giai tu nam 2003 din thudng duge chdng bang go than todn bg guang khiu khdng nam 2006, t i t ca cdc Id chp tilt dien hinh thang va dugc hipu qua (day Id vj tri tap trung ngang nghieng tgi Cdng ty KHCNM s o 12/2012 * CNKT HAM LO Thong tin khoa hQc cong ngh^ m d W CHfiNGGdHlNH THANG GAYXA,TOACM