Distribution Laws of Abutment Pressure in Coal Pillar for Light Type Top-Coal Caving Face under Dynamic Pressure and its Engineering Application
Under the dynamic pressure, ground pressure accidents of rib saplings roof fall and floor heave in coal pillar of light type top-coal caving face have often happened. In this paper, based on the geological conditions of a coal caving face in a coal mine, FLAC3D is used to analyse the stress distribution laws, in which the position of peak value and distribution laws of abutment pressure on both strike and slope in coal pillar of gateway are obtained, the conclusion will provide a theoretical basis for parameters designing of coal pillar and pre-support in light type top-coal caving face under dynamic pressure, and it will also provide some available references for other similar mining areas. While the parameters designing of pre-support are used in practice, the effects meet the requirements of engineering applications.
mining ezcavation section coal pillar abutment pressure numerical simulation
Xu Xuefeng Liu Shaowei Zhang Hui
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454000, China
国际会议
The 3rd International Symposium on Modern Mining & Safety Technology Proceedings(第三届现代采矿与安全技术国际学术会议)
辽宁阜新
英文
733-738
2008-08-04（万方平台首次上网日期，不代表论文的发表时间）