Fracture mechanism and response law of high thick and hard strata in Ordos mining area
Gao Zhongxiang 1, Qu Zhi 2, Li You 2, Chen Miao 2
1. Yankuang Energy Group Co., Ltd., Jining 272000, China; 2. Energy and Mining Engineering College of Shandong University of Science and Technology, Qingdao 266590, China
Abstract： Grasping the breaking mechanism and breaking response law of high thick hard rock strata plays an important role in the prevention and control of coal mine dynamic disasters. Based on the 2201 and No. 2202 Faces of Yingpanhao Coal Mine, the mechanical model of high-level thick and hard rock breaking is established, and the mechanical formula of high-level thick and hard rock breaking is obtained. The geological data of Yingpanhao Coal Mine are brought into the mechanical model and formula calculation, and the high-level thick and hard rock strata are not broken during the mining of 2201 working face. During the mining of No. 2202 Face, the high thick and hard rock stratum is expected to break within the square range of the double working face, and the whole process of high thick and hard rock stratum breaking is analyzed in detail. By monitoring the large energy events during the mining of No. 2202 Face in Yingpanhao Coal Mine, it is verified that when the No. 2202 Face is mined to the square of the double working face, the high thick and hard rock stratum breaks and releases a lot of energy. The research results of this paper provide scientific guidance for studying the fracture mechanism and regular response of high thick and hard rock strata under similar geological conditions.
高中祥1，曲 治2，李 友2，陈 淼2. 鄂尔多斯矿区高位厚硬岩层破断机理及响应规律[J]. 煤炭与化工, 2023, 46(5): 28-32.
Gao Zhongxiang 1, Qu Zhi 2, Li You 2, Chen Miao 2. Fracture mechanism and response law of high thick and hard strata in Ordos mining area. CCI, 2023, 46(5): 28-32.
