文献类型：期刊文献

英文题名：Mine Pressure Behavior of Gob-Side Entry Retaining by Roof Cutting in Closely Spaced Coal Seams

作者：Guo, Pengfei[1,2];Deng, Shiwei[1];Jin, Zhupeng[3];Zhu, Xingyu[1];Wang, Yuanyuan[1];Ta, Burui[4];Kong, Xiangwu[5]

机构：[1]Shaoxing Univ, Sch Civil Engn, Shaoxing 312000, Peoples R China;[2]China Univ Min & Technol, State Key Lab Geomech & Deep Underground Engn, Beijing 100083, Peoples R China;[3]Heilongjiang Univ Sci & Technol, Sch Min Engn, Harbin 150000, Peoples R China;[4]China Met Geol Bur, Northwest Geol Explorat Inst, Xian 710000, Peoples R China;[5]Guangxi Rd & Bridge Engn Grp Co Ltd, Nanning 210000, Peoples R China

年份：2023

外文期刊名：GEOTECHNICAL AND GEOLOGICAL ENGINEERING

收录：EI(收录号：20233414605214)、ESCI(收录号：WOS:001050239100001)、Scopus(收录号：2-s2.0-85168372718)、WOS

基金：AcknowledgementsThis work was supported by the National Natural Science Foundation of China (Grant Nos. 51904188), the National Natural Science Foundation of Heilongjiang for Distinguished Young Talents, China (Grant No. YQ2019E033) and the Province Program on Key Research Project of GuangXi Province (Guike AB22080035). These financial supports are gratefully acknowledged.

语种：英文

外文关键词：Closely spaced coal seams; Roof cutting and pressure release; Mine pressure behavior; Method 110; Interlamellar spacing

外文摘要：To study the influence of the mined-out area in the nearby upper section of a coal seam on the mining of the working face of the lower seam, in this study, the mining of the 18-4 working face using the 110 mining method in the Dongrong No. 2 Mine, Jixian County, Heilongjiang Province, China, was taken as the engineering background. The 3DEC discrete element numerical simulation method was used to simulate the mining conditions close to the upper coal seam. The seam spacing was set as 5, 10, 15, and 35 m, and the influence of the pressure on the working face of the lower coal seam was investigated based on comprehensive analysis of field measured data. According to the results, as the distance between the coal seams decreased, the stress and displacement of the roof of the surrounding rock increased and the stability distance of the roadway decreased. During roadway reuse process, as the coal seam spacing decreased, and displacement of the surrounding rock increased and the leading influence range of the roadway decreased. Under the influence of slit, the roof pressure on the side near the slit is lower than that on the side near the coal wall.