摘要
以某煤矿F10逆断层地质条件为背景,采用相似材料模拟试验,对上、下盘煤层开采过程中断层附近煤层顶、底板及断层带的应力变化规律进行研究。研究结果表明:由于断层的"屏障"作用,集中应力很难穿过断层而被限制在工作面一侧,造成断层附近越靠近断层应力集中程度越高;下盘开采对于煤层顶、底板以及断层带的影响较上盘要明显;在其他因素相同情况下,煤层赋存深度越大、上覆载荷越大,其开采过程中应力集中就越明显。
Based on the geological condition of Ft0 reverse fault in a coal mine, the stress variation laws of the coal seam roof, floor and fault zone near the fault in the upper and lower two sets of mining process is studied by simulating experiment with similar material. Research results show that the concentrated stress is difficult to penetrate the fault and can only be cut off at one side of the working face and lead to a higher degree of stress concentration near the fault due to the ＂barrier＂ effect of the fault; the influence of footwall mining about coal seam roof and floor and the fault zone is more obvious than that of hanging wall mining; in the same conditions, if the occurrence depth of coal seams or the overlying load is more greater, the stress concentration in the process of mining will be more obvious.
出处
《煤矿安全》
北大核心
2017年第5期53-56,60,共5页
Safety in Coal Mines
基金
国家自然科学基金资助项目(51379119
51109124
51509149
41472281)
关键词
逆断层
屏障
相似材料试验
应力集中
应力变化规律
reverse fault
barrier
similar material experiment
stress concentration
stress change law
