文献类型：期刊文献

英文题名：Numerical simulation of mining-induced seepage fracture development of overlying rocks in repeated disturbance zone

作者：Kuang, Tiejun Jin, Zhiyuan Ma, Liqiang Xu, Mengtang Zhang, Dongsheng

第一作者：Kuang, Tiejun

通信作者：Jin, Zhiyuan

机构：[1] Tongmei Datang Tashan Coal Mine Co. Ltd., Datong, Shanxi, China; [2] School of Mines, Guizhou Institute of Technology, Guiyang, Guizhou, China; [3] School of Mines, Key Laboratory of Deep Coal Resource Mining, Ministry of Education of China, China University of Mining and Technology, Xuzhou, Jiangsu, China

第一机构：Tongmei Datang Tashan Coal Mine Co. Ltd., Datong, Shanxi, China

年份：2015

卷号：20

期号：26

起止页码：13037-13048

外文期刊名：Electronic Journal of Geotechnical Engineering

收录：EI(收录号：20160601897077);Scopus(收录号：2-s2.0-84956708046)

语种：英文

外文关键词：Coal - Coal deposits - Excavation - Fracture - Pore pressure - Rocks - Vectors - Water resources

摘要：In order to ascertain the seepage fracture development law of overlying rocks in repeated disturbance zone, UDEC stress-seepage coupling system was applied to analyse the mining-induced seepage fracture development of overlying rocks and the variation of pore pressure and seepage vector during the excavation of shallow-buried close distance coal seams. During the excavation of lower coal seam, the compacted and stabilised seepage fractures of overlying rocks of the upper shallow-buried close distance coal seams developed once again and the degree of development of seepage fractures of overlying rocks varied with different area of excavation. The seepage fractures of overlying rocks at the boundary of excavation continued to develop, the pore pressure gradually reduced and seepage vector gradually increased. The seepage fractures of overlying rocks in the middle of the gob can be possibly closed after secondary development. The pore pressure reduced again and then increased while seepage vector increased again and then decreased. Results of the study provides basis for the excavation of shallow-buried close distance coal seams without destroying the water resources. ? 2015 ejge.