煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2015年
4期
76-80
,共5页
完全沿空掘巷%巷旁支护%数值模拟%巷内支护%切顶能力
完全沿空掘巷%巷徬支護%數值模擬%巷內支護%切頂能力
완전연공굴항%항방지호%수치모의%항내지호%절정능력
completely driving roadway along gob%roadway-side supporting%numerical simulation%roadway supporting%cutting roof ability
基于辽宁某煤矿1201工作面完全沿空掘巷地质条件，针对巷旁支护体在动压作用下容易破坏的特点，采用巷旁支护体顶部施加柔性垫层及侧向施加预应力钢筋的措施。沿空巷道巷内支护采用高强度预应力锚杆锚索支护系统，并进行巷道煤壁侧帮W型钢带以及贴帮支设木支柱加强支护，以消除巷道内不均衡载荷。 FLAC3D 数值模拟结果表明：巷旁支护体切顶能力强、沿空巷道支护效果良好。现场试验巷道位移量观测表明：沿空巷道稳定性好，完全沿空掘巷支护方案可以应用到现场。
基于遼寧某煤礦1201工作麵完全沿空掘巷地質條件，針對巷徬支護體在動壓作用下容易破壞的特點，採用巷徬支護體頂部施加柔性墊層及側嚮施加預應力鋼觔的措施。沿空巷道巷內支護採用高彊度預應力錨桿錨索支護繫統，併進行巷道煤壁側幫W型鋼帶以及貼幫支設木支柱加彊支護，以消除巷道內不均衡載荷。 FLAC3D 數值模擬結果錶明：巷徬支護體切頂能力彊、沿空巷道支護效果良好。現場試驗巷道位移量觀測錶明：沿空巷道穩定性好，完全沿空掘巷支護方案可以應用到現場。
기우료녕모매광1201공작면완전연공굴항지질조건，침대항방지호체재동압작용하용역파배적특점，채용항방지호체정부시가유성점층급측향시가예응력강근적조시。연공항도항내지호채용고강도예응력묘간묘색지호계통，병진행항도매벽측방W형강대이급첩방지설목지주가강지호，이소제항도내불균형재하。 FLAC3D 수치모의결과표명：항방지호체절정능력강、연공항도지호효과량호。현장시험항도위이량관측표명：연공항도은정성호，완전연공굴항지호방안가이응용도현장。
For the geological condition of roadway completely driven along gob in 1201 mining face of a mine in Liaoning Province, roadway-side supporting body was easily be destroyed by dynamic force.Flexible cushion was added at the top of supporting body and pre-stress steel bar was applied at the side of supporting body.Pre-stress anchored bolt and cable supporting system was used in road-way supporting, aided by W-style steel belt at the coal side and wood prop for reinforcement, to eliminate unbalance load.FLAC3D nu-merical simulation found that cutting roof ability of roadway-side supporting was strong and supporting effect was excellent.Field obser-vation for roadway displacement showed that the roadway driven along gob was stable and that the support project could be used in prac-tice.
