煤田地质与勘探Issue(2)：62-66,5.DOI:10.3969/j.issn.1001-1986.2014.02.013
下伏煤层开采对上覆巷道围岩应力的影响
The impact of underlying coal mining on surrounding rock stress in overlying roadway
摘要
Abstract
In order to grasp the stress state in surrounding rock in suction road 17101(3) of Pansan mine before and after underlying 11-2 coal mining, using the hollow inclusion stress release method, in-situ stress measurement were conducted at 6 points before and after mining underlying coal seam. And the engineering was simulated and calculated by finite difference software FLAC3D. The results show that the maximum principal stress of this aera is 21.62 Mpa, the maximum stress direction close to the horizontal direction, the maximum horizontal principal stress is about 1.42 times the vertical stress, has obvious characteristics of tectonic stress. Through the analysis of meas-ured ground stress during mining underlying seam, it was known that the maximum principal stress decreased by 3%compared with that before mining.关键词
围岩应力/地应力/空心包体应力解除法/潘三矿Key words
the stress of surrounding rock/ground stress/the hollow inclusion stress release method/Pansan mine分类
矿业与冶金引用本文复制引用
徐佩宽,荣传新,程桦..下伏煤层开采对上覆巷道围岩应力的影响[J].煤田地质与勘探,2014,(2):62-66,5.基金项目
国家自然科学基金重点项目(51134012) （51134012）
