山西焦煤科技
山西焦煤科技
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SHANXI COKING COAL SCIENCE & TECHNOLOGY
2015年
4期
27-30
,共4页
采动影响%数值模拟%结构补偿%二次支护
採動影響%數值模擬%結構補償%二次支護
채동영향%수치모의%결구보상%이차지호
Mining influence%Numerical simulation%Structure compensation%Secondary support
某矿 II82新回风上山将承受 II829－1工作面的强烈采动影响，原支护采取普通锚网支护，巷道破坏严重。通过对动压影响巷道围岩应力场进行数值模拟，结果表明：巷道两帮帮、帮脚以及底板位置是整个支护承载结构的薄弱环节，应对这些部位进行结构补偿。对 II82新回风上山提出了二次高强锚网索（控制底鼓）支护技术，方案实施后，Ⅱ82新回风上山承受住了强烈的采动影响，保证了巷道的使用断面，并在工作面回采结束后很快趋于稳定。
某礦 II82新迴風上山將承受 II829－1工作麵的彊烈採動影響，原支護採取普通錨網支護，巷道破壞嚴重。通過對動壓影響巷道圍巖應力場進行數值模擬，結果錶明：巷道兩幫幫、幫腳以及底闆位置是整箇支護承載結構的薄弱環節，應對這些部位進行結構補償。對 II82新迴風上山提齣瞭二次高彊錨網索（控製底鼓）支護技術，方案實施後，Ⅱ82新迴風上山承受住瞭彊烈的採動影響，保證瞭巷道的使用斷麵，併在工作麵迴採結束後很快趨于穩定。
모광 II82신회풍상산장승수 II829－1공작면적강렬채동영향，원지호채취보통묘망지호，항도파배엄중。통과대동압영향항도위암응력장진행수치모의，결과표명：항도량방방、방각이급저판위치시정개지호승재결구적박약배절，응대저사부위진행결구보상。대 II82신회풍상산제출료이차고강묘망색（공제저고）지호기술，방안실시후，Ⅱ82신회풍상산승수주료강렬적채동영향，보증료항도적사용단면，병재공작면회채결속후흔쾌추우은정。
Ⅱ82 air return roadway in a coal mine will bear the strong mining influence of Ⅱ829 -1 working face.The original support is common bolt net support and The roadway destruction is serious,Based on the dynamic pressure effect of roadway surrounding rock stress field numerical simulation,the result show that the weakness lies in the middle and foot of the working slope as well as the bottom floor,To deal with these structural compensation.Sec-ondary high -strength reinforcing (floor heave control)support technology is put forward and applied for Coal mine Ⅱ82.Finally,it has succeeded in bearing the violate mining influence,ensuring the using sections in roadway,and it tends to be stable soon after the end of face mining.
