标题：Research on gob-side entry retaining using high-strength lightweight block
作者：Zhou, Changlong; Li, Hong
作者机构：[Zhou, Changlong; Li, Hong] Shandong Univ Sci & Technol, Sch Coll Min & Safety Engn, Qingdao, Shandong, Peoples R China.
会议名称：4th International Conference on Environmental Science and Material Application (ESMA)
会议日期：DEC 15-16, 2018
来源：2018 4TH INTERNATIONAL CONFERENCE ON ENVIRONMENTAL SCIENCE AND MATERIAL APPLICATION
摘要：In order to effectively reduce the tension between the mining face and the tunnelling connection and increase the underground work efficiency. The engineering background of this paper is - 4111 face of Jingang Coal Mine, located in Dazhou, West China's Sichuan Province. The theoretical analysis, FLAC 3D simulation and pressure engineering practice of high-strength lightweight block are studied. Combining with the underground scene and using FLAC 3D, the model of different width of support body was established, and the deformation characteristics of surrounding rock were analysed to determine the reasonable width of the support body. According to the field situation of the underground working face, the size of high-strength lightweight block and the way of wall building were designed. The stability effect of transportation lane in working face was observed and analysed with instruments in the field, which ensured the stability of high-strength light block along the roadway and surrounding rock of roof, and the rationality and scientificity of supporting design.