Analysis on inducing factors of rockburst and characteristics of ground pressure behavior in No.C2316 Face
Li Zhenwu1, He Jianxin2, Shen Jianbo1
1. Jining Energy Development Group Co., Ltd., Jining 272000, China; 2. YangCheng Mine of Shandong Jikuang
Luneng Coal Power Co., Ltd., Jining 272500, China
Abstract： The buried depth of No. C2316 Face in Anju Mine reaches 956 m, and its roof is mainly composed of medium sandstone and fine sandstone with high hardness. At the same time, affected by high ground stress and strong mining, working face and mining roadway are easy to induce rock burst. Therefore, in order to determine the inducing factors of rock burst and the characteristics of mine pressure behavior in the working face, the law of overburden movement and mine pressure behavior in the process of working face advancing was studied by theoretical analysis and numerical simulation. The results showed that the main factors inducing rock burst were buried depth of coal seam, occurrence characteristics of coal seam and key strata of working face roof. According to the results of FLAC3 D numerical simulation, the weighting step of the main roof was 24 m, the caving range was about 14 m, and the advance abutment pressure reached 45.03 MPa. The main roof was pressed for the first time, and the vertical stress concentration appeard in front of the working face, which was easy to induce the danger of rock burst.
李振武1，何建新2，沈建波1. C2316 工作面冲击地压诱发因素及矿压显现特征分析[J]. 煤炭与化工, 2023, 46(1): 1-3，7..
Li Zhenwu1, He Jianxin2, Shen Jianbo1. Analysis on inducing factors of rockburst and characteristics of ground pressure behavior in No.C2316 Face. CCI, 2023, 46(1): 1-3，7..
