Study on Surrounding Rock Stability of Long-Span Coal Roadway under Influence of Mining and Support Technology Optimization

2018 International Conference on Civil, Architecture and Disaster Prevention

土木建筑工程

Yankai, Ren Chao Li Keqing Zhang^1

School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing

1000831, China^1

关键词: Coal mine safety productions;    Practical engineering;    Pressure characteristics;    Roadway stability;    Stress and strain;    Support parameters;    Support technology;    Surrounding rock stability;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/218/1/012016/pdf
DOI  :  10.1088/1755-1315/218/1/012016

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

Taking stoping safety of large-span working face in a coal mine in Shanxi as the background, the damage and movement law of overlying strata structure in coal roadways under the influence of mining are studied. Combined with the actual production of the mine, the mining pressure characteristics of the working face and the influence range of mining in the working face are mastered. Main research contents and conclusions are that: (1) Numerical simulation of roadway stability is carried out using UDEC software, stimulating the stress and strain variation of surrounding rock under unsupported state. Based on this, the roadway support parameters are simulated and optimized, which provides valuable reference for practical engineering. (2) Study the simplified design process of bolt support parameters, improve the accuracy of bolt support parameters and reduce the cost of coal mine support to increase the incidence of coal mine roof accidents, providing a basis for coal mine safety production.