摘要
为研究煤层开采对覆岩的移动破坏规律,获得覆岩的破坏范围,从而确定高抽巷的布设位置,以淮南刘庄矿151305工作面为研究对象,建立了倾向和走向模型。通过相似模拟的方法在煤层走向及倾向上结合应力场、裂隙场以及瓦斯场,验证对上覆高瓦斯煤层实行"煤与瓦斯共采"这一战略的可行性。通过模拟,得出煤岩体水平变形和竖直位移变化规律并监测岩体内应力变化情况,并以此为依据,确定高抽巷的位置。结果表明:从回风巷开始向采空区沿走向延伸12 cm并以55°角度向上和在回风巷处以114°角度向上的范围内,布置高抽巷时,既有利于巷道完整性的保持,同时与裂隙发育区沟通的离层裂隙也有利于采空区瓦斯的抽采。
The purpose of this paper is to study the movement and destruction law of coal mining for the overlying strata, and obtain its damage range so as to detemine the location of the high pumping lane. By taking No. 151305 mining face in Liuzhuang Coal Mine of Huainan as a research object, the strike and dip models of the face were estiblished. It verified the feasibility of simultaneous extraction of coal and gas by the method of similar simulation combined with stress field, fissure field and gas field in the strike and dip. Through simulation, it determined the location of high pumping lane on the basic of the coal rock horizontal deformation and vertical displacement law, and the change of rock stress. The re- suits showed that it is in favor of keeping the integrity of the high pumping lane and the layer cranny that communicated with fractured zone is also conducive to drainage air lane began to goaf along the strike extension an angle of 114 degrees upward. gas in goaf if of 12 cm and arranged the high pumping lane in the area from the return with an angle of 55 degrees up to return airway of between
出处
《地矿测绘》
2015年第2期15-18,共4页
Surveying and Mapping of Geology and Mineral Resources
关键词
高抽巷
相似模拟实验
采动裂隙
high pumping lane
similar simulation test
mining induced fissure
