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Thdng tin khoa hpc cong ngh0 m o DE XUAT VE HE THONG QUAN LY VAN DE THAN TIT CHAY TRONG MO THfiN Wn LO Basing Uie investigation results and expenences dunng the TS TAKEHIRO ISEI woddng time at Institute of Mining Science and Technology Chuyin gia tinh nguy$n JICA (IMSAT), Coalmine safety Center and at some underground lai Vi$n khoa hQC Cdng ngh$ Md - Vinacomi coal mines having coal spontaneous combustion, Dr, Isei has proposed some solutions for coping with the coal spontaneous combustion phenomena at the coal mines as well as the preventive measures in the future These proposals have been from the Japanese legal requirements that will be amended suitable to the concrete conditions and situations at Vietnam underground coal mines Thdng qua qua trinh tim hiiu va ket qua khao sat thai gian cong tac tgi V\$r\ Khoa hgc Cdng ngh$ Md, Trung tSm An toan Md va mpt so md than him Id cd xay ty ch^y, Tiln s? ISEI c6 m$t s6 d l xuM du'a c^c bi$n ph^p nhiim d6i phd vdi hi$n tu'png than ty chdy tgi Ccic mo than cQng nhu* c^c bi$n phdp ngan ngCra tirang lai Cac d l xult bai viit difQ'c can CLf tren cdc yeu c l u phdip ly sOa d i i , tham khao tu* cac mo Taiheiyo vd Kushiro cua Nhgt Ban, cd tinh den cac diiu ki^n va tinh hinh thyc t l tgi c i c md than Vi^t Nam d i i u ki^n thugn lo'i cho cong tdc khai thac cac nguon khodng san hap ly, c i n tien hdnh thiet Igp cdc bi$n phdp d i i phd c i n thilt vd-i hi?n tu'png than ty chay Pham vi va trach nhi$m Cdc bi^n phdp du'g'c thilt Igp se du'pc ap dgng vao tat ca cdc md than him Id cung nhu* cdc td chCrc cd lien quan den vigc ho trp' cdng tac khai thac than tgi cdc dan v| tryc thudc Vinacomin Trdch nhi$m T i t ca cac ca quan lien quan d i n khai thac mo se chju trach nhi$m v l hien tirqrng Quan diem c c ban than ty chdy tu- giai dogn Igp Dinh nghTa k l hogch khai thac d i n giai Cdn bp quan ly: Gidm d i e dogn khai thdc mo thyc t l mo than, phd giam d i e md Trach nhi$m t i n g t h i nSn than, tryd'ng phdng an todn, du'g'c giao cho Ban An toan tn/dng phdng ky thu|t cOa md cua Vinacomin Sy phan chia Cdn b$ ho$c cdn b$ an trdch nhi$m ciJa cdc bgn lidn todn: Ky s y phy trdch hi§n quan se du'g'c Ban an todn cua tru'dng, quan d i e phdn xySng Vinacomin dam nhi$m Theo tdc gia, tat ca trdch Mtjc dfch: Di ngdn ngCra nguy ca vd t i n thyang cho nhl^m lien quan d i n khai thdc cdng nhdn mo, d l kilm sodt mo phai dyg^c giao cho Gidm nhiim mdi trudng md vd tgo d i e mo Tuy nhien, n l u chung ta xem xet hp thong khai thac hipn tgi cua mpt md than tryc thuge Vinacomin cho thay cd mgt s l t l chLFC cung cd lien quan din Vi dy, tru'ang hep md than him Id, Vi$n Khoa hgc Cong nghp Mo thilt k l cdng tac khai thac, md tien hdnh khai thdc vd Trung tam d p CLKU Mo chju trdch nhipm tien hdnh cdng vi$c sy c l xay Xem xet tinh hinh hipn tgi cua h$ thing khai thdc mo h i m Id tryc thu$c Vinacomin, tac gia da du'a de xuat nhutren C^c bi$n phdp dSiphd Cdc bipn phdp d i i phd vdi hipn tu'O'ng than ty chdy se du'g'c thilt Igp theo cac dilm sau: - K l hogch khai thac phu hg'p doi vd'i via than cd nguy ca xay hipn typng than ty chdy - Ap dgng cdc bipn phdp doi vd'i khu vyc c6 nguy ca xay hi^n tu'O'ng than ty chay - Cdc phu-ang phdp nhgn bilt d i u hipu cua hipn typ'ng than t y chdy - Dgp t i t sy chdy hoge xay KHCNM S6 9/2013 • NGHIEN CUti - TRAO D | Thong tin khoa hge cong nghp md tu-dng chan nham ching lgi hien tu'O'ng than ty chay - Ap dung cac bien phap sau dgp tdt sy chdy hoac xay tu'O'ng chan ching lai hipn tu'O'ng than ty chay - Dao tgo ve hipn tu'O'ng than ty chdy Cdc mge tren bao gom "ke hoach khai thac" cd tinh den ca yeu to san xuat va an todn bao g i m ca hi^n tu'O'ng than ty chdy, "cac bipn phap doi phd tai hien tni'dng" nham ngan ngCra hipn tu'O'ng than ty chay, "phat hien sdm" hipn tu'O'ng than ty chay cung nhu" "cac bipn phap doi phd" sau xay hipn typ'ng than ty chay Cac van de can dieu tra tim hiSu Cd mdt so diem khac bipt giija sy ty chay cua than bituminous va sy ty chay eua than antraxit, vi t h i , khdng t h i mdy mde ap dung cac klnh nghi$m thu du'g'c qua trinh t y chay eua than tai Nhat Ban nai cd sy ty chdy cua than bituminous Vi vgy can tien hanh cac khao sat theo eac v i n d l nhy sau: - Ca che ty chay cua than antraxit - Qua trinh gia nhiet vd phat sinh chdy cua than antraxit - Xdc djnh kha nang ty chay cua than antraxit cua vung Quang Ninh cung nhu- cac vung than khac cua Vipt Nam - DiJ lipu thu thgp tu" cac vu ty chay xay trydc day a cac md than Vi$t Nam - Phdt hipn sdm hipn tu'O'ng ty chdy via than antraxit - Tinh hipu qua va an toan ciJa bipn phdp d i i phd vdi vipe phdt sinh ty chay Thao luan cua eac ca quan lien quan Vi ed nhieu to ehLcc eung lien quan den viec khai thdc tgi mgt mo than nen can thiet phai chia se cac y tu'O'ng va hieu bilt chung v l cong tac khai thae mo tu- giai doan thilt k l , lap cdng tac san xuat cQng nhy cac bipn phap can ap dyng sau hoan tat viec khai thac Thong qua cac cugc thao luan eua edc ben lien quan, khdng ch? dan thuin ve khia canh ky thudt md v l viec phdn chia trach nhipm quan iy v i n de ty chdy tCi' cdng tac phong ngi>a cho d i n cac bipn phap thyc hien tai hipn tru'dng nham ddi vdi than ty chay se du'gc thao lugn D l xudt ap dyng Quy dinh noi b9 Cong ty cho cac b9 phan lien quan Ke hogch khai thae hipu qua cho via than eo tinh ty chay - Quylt dinh thu' ty khai thae v?a than (theo Idp): V l nguyen tac, khai thac chia Idp c i n phai khai thac tCr Idp tren trd xuong Tuy nhien, tru'dng hg'p khoang each giu'a cac v?a du an toan thi thCp t y ndy khdng nhat thiet phai tuan theo - Khoanh khai thac dgc lap: Phu'ang phap khai thac dgc lap nen du'g'c dp dgng va khoanh khai thdc dOc lap la giai phap kha thi tgo sy tach bipt vdi cae khu vyc khac Kieh thyde khoanh khai thac du'g'c quyet djnh khdng ch? dya tren s y hipu qua v l san xuat md edn phai dam bag yeu to phdng ngCra t y chdy Lya chpn c l u KHCNM S 9/2013 * NGHIEN CUU - TRAO D O I true eua khoanh c i n xem xet d i n eac thdng s l sau day: 1) Kieh cd: Chieu rgng va chilu dai cua khoanh c i n tinh d i n t i c t i l n gyang cung nhu' thdi gian k i t thuc khai thdc 2) Try bao vp giOa khoanh khai thac cu vd mdi: de giam thilu cac anh hu'dng eua-ttr tang khai thdc cu d i n ting khai thac mdi, bao gom ca Id thdng gio cua t i n g khai thae mdi (Nlu Id doe v?a du'g'c bo tri da nhu* d mo Mao Khe thi ehilu rong eua try bao vp giiJa cae t i n g ed the du'g'c giam di Can danh gia sdu sat nhij'ng u-u, nhu'O'c diem cua viec bo tri du'dng Id than hay da tren ca hai phu'ang dien an toan va san lu'g'ng) [Tham khao truing h(?p cOa mo TAIHEIYO: Dieu 75}: Dien tich cua khoang khai thac doc lap nen nho hon 150,000 m^va chiiu rgng cua tru bao ve nen fan hon 10m, th&i gian de ket thuc mpf khoang khai thac nen nho han nam - Phu'ang phdp khai thac, t i c dO tien gu-ang, phu'ang phap ehing giy va chen Id 1) Phyang phap khai thac: - Phycng phap khai thac khau gigt va phd hda tCr mgt canh khai thac nen dyce dp dyng - Vipe khai thac than hgp ly nen du'O'c ap dyng de giam toi da lu-cng than cdn t i n Igi khu vyc pha hda - T i c dg tiln gu-ang hgp 1^ phai dyge tri d l ngan ehgn sy t y chay {Tham khao truing Thong tin khoa hgc cdng nghp mo hop cua mo TAIHEIYO: Dieu 75]: Chiiu dii guvng Id cho nen nhd hon 200m vi toe d$ khau than nen l&n hon Im/ngay cung nhw phuung phip phi hda nen du