煤矿开采
煤礦開採
매광개채
COAL MINING TECHNOLOGY
2013年
4期
78-81
,共4页
大断面%超前预注浆%马丽散%断层%煤巷
大斷麵%超前預註漿%馬麗散%斷層%煤巷
대단면%초전예주장%마려산%단층%매항
large section%pre-grunting%Marithan%fault%coal roadway
针对煤巷过断层组破碎带顶板难以控制的难点，采用超前中空注浆锚杆锚索预注马丽散的技术对巷道顶板和两帮进行了加固；介绍了加固性注浆的注浆范围、超前距、扩散半径、钻孔布置、注浆压力等参数的确定。现场试验效果表明，注马丽散有效控制了巷道围岩变形，避免了巷道堵塞、冒顶和片帮事故，提高了掘进速度，保证了安全施工。
針對煤巷過斷層組破碎帶頂闆難以控製的難點，採用超前中空註漿錨桿錨索預註馬麗散的技術對巷道頂闆和兩幫進行瞭加固；介紹瞭加固性註漿的註漿範圍、超前距、擴散半徑、鑽孔佈置、註漿壓力等參數的確定。現場試驗效果錶明，註馬麗散有效控製瞭巷道圍巖變形，避免瞭巷道堵塞、冒頂和片幫事故，提高瞭掘進速度，保證瞭安全施工。
침대매항과단층조파쇄대정판난이공제적난점，채용초전중공주장묘간묘색예주마려산적기술대항도정판화량방진행료가고；개소료가고성주장적주장범위、초전거、확산반경、찬공포치、주장압력등삼수적학정。현장시험효과표명，주마려산유효공제료항도위암변형，피면료항도도새、모정화편방사고，제고료굴진속도，보증료안전시공。
In order to solve the difficult problem of supporting cracked roof in driving coal roadway through faults , the technology of pre-grunting Marithan with hollow anchored bolt and cable was applied to reinforcing roof and two -side.Parameters including grunting range, pre-grunting distance , diffusion diameter , borehole distribution and grunting pressure were obtained.Practice showed that Marithan effectively controlled surrounding rock deformation and prevented roadway blocking , roof falling and coal-wall sliding.Driving speed was increased under safe condition.
