Numerical simulation of the stress distribution in a coal mine caused by a normal fault

3rd International Conference on Advances in Energy, Environment and Chemical Engineering

能源学;生态环境科学;化学工业

Zhang, Hongmei^1 ; Wu, Jiwen^1 ; Zhai, Xiaorong^1

School of Earth and Environment, Anhui University of Science and Technology, Huainan

232001, China^1

关键词: Coal mining;    Concentrated stress;    Normal fault zones;    Normal faults;    Stress distribution characteristics;    Stress transmission;    Two directions;    Working face;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/69/1/012017/pdf
DOI  :  10.1088/1755-1315/69/1/012017

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Luling coal mine was used for research using FLAC3Dsoftware to analyze the stress distribution characteristics of the two sides of a normal fault zone with two different working face models. The working faces were, respectively, on the hanging wall and the foot wall; the two directions of mining were directed to the fault. The stress distributions were different across the fault. The stress was concentrated and the influenced range of stress was gradually larger while the working face was located on the hanging wall. The fault zone played a negative effect to the stress transmission. Obviously, the fault prevented stress transmission, the stress concentrated on the fault zone and the hanging wall. In the second model, the stress on the two sides decreased at first, but then increased continuing to transmit to the hanging wall. The concentrated stress in the fault zone decreased and the stress transmission was obvious. Because of this, the result could be used to minimize roadway damage and lengthen the time available for coal mining by careful design of the roadway and working face.