煤
煤
매
COAL
2015年
8期
1-3,41
,共4页
马一思%王恩营%廉有轩%刘度
馬一思%王恩營%廉有軒%劉度
마일사%왕은영%렴유헌%류도
白坪井田%地应力%数值模拟%构造带
白坪井田%地應力%數值模擬%構造帶
백평정전%지응력%수치모의%구조대
Baiping field%in-situ stress%numerical simulation%tectonic belt
随着煤矿采深的增大,由高地应力引起的矿井动力显现越来越频繁,煤与瓦斯突出的危险性也日益加剧。获取生产矿井应力分布特征能够有效减少矿井动力现象,为制定降低煤与瓦斯突出危险性措施提供参考。文章基于区域应力测试分析,采用ANSYS软件对白坪井田复杂构造带进行了剖面数值模拟。模拟结果显示:滑动构造带和断层带应力大小和方向变化较大,断层下盘应力变化幅度大于上盘,应力梯度变化带是矿井动力现象频发地带。同一岩性岩体内应力变化不明显,不同岩性接触带应力有较大变化,岩性是影响应力分布的重要因素之一。
隨著煤礦採深的增大,由高地應力引起的礦井動力顯現越來越頻繁,煤與瓦斯突齣的危險性也日益加劇。穫取生產礦井應力分佈特徵能夠有效減少礦井動力現象,為製定降低煤與瓦斯突齣危險性措施提供參攷。文章基于區域應力測試分析,採用ANSYS軟件對白坪井田複雜構造帶進行瞭剖麵數值模擬。模擬結果顯示:滑動構造帶和斷層帶應力大小和方嚮變化較大,斷層下盤應力變化幅度大于上盤,應力梯度變化帶是礦井動力現象頻髮地帶。同一巖性巖體內應力變化不明顯,不同巖性接觸帶應力有較大變化,巖性是影響應力分佈的重要因素之一。
수착매광채심적증대,유고지응력인기적광정동력현현월래월빈번,매여와사돌출적위험성야일익가극。획취생산광정응력분포특정능구유효감소광정동력현상,위제정강저매여와사돌출위험성조시제공삼고。문장기우구역응력측시분석,채용ANSYS연건대백평정전복잡구조대진행료부면수치모의。모의결과현시:활동구조대화단층대응력대소화방향변화교대,단층하반응력변화폭도대우상반,응력제도변화대시광정동력현상빈발지대。동일암성암체내응력변화불명현,불동암성접촉대응력유교대변화,암성시영향응력분포적중요인소지일。
With the increase of mining depth of coal mine, caused by the high geostress mine power appeared more and more frequent, the risk of coal and gas outburst is also growing.For production of the mine stress distribution characteristics can effectively reduce the mine dynamic phenomena, to reduce the danger of coal and gas outburst measures to provide reference.Based on regional stress test and analysis, use ANSYS software dialogue of flat field numerical simulation of complex tectonic belt in the profile.Simulation results show that the sliding structure zone size and direction change is bigger, and stress along the fault footwall stress variation is greater than the upper plate, the stress change of gradient belt prone area is mine dynamic phenomena.The same lithology rock mass stress change is not obvious, the different lithologic contact stress has great change, the lithology is one of the important factors that affect the stress distribution.