煤炭与化工2024，Vol.47Issue(8)：49-55,7.DOI:10.19286/j.cnki.cci.2024.08.011
新集二矿承压水上开采底板破坏深度研究
Study on floor failure depth of mining on confined water in Xinji No.2 Mine
摘要
Abstract
In order to improve the upper limit of No.1 coal mining in Xinji No.2 Mine and provide a basis for water disaster prevention and control,the geological data of Xinji No.2 Mine were fully analyzed.UDEC 7.0 was used for numerical simulation test to simulate the development of floor when the working face was advancing.It was concluded that when the working face advanced to 120 m,the floor reached the maximum failure depth of 19.3 m.The parallel electrical method was used to monitor the fracture process of coal seam floor strata.By observing the change trend of resistivity,the deformation process of rock mass was judged,and the depth of coal seam mining failure zone was determined to be 19.6 m.The results showed that the numerical simulation results were basically consistent with the electrical test results.The bottom of the floor failure zone was the protective zone of the floor rock layer.The integrity of the rock layer below the protective zone was good and could play a certain role in water insulation.The research results were of great significance to the study of confined water mining under similar geological conditions.关键词
底板破坏/承压水上开采/UDEC 7.0/网络并行电法Key words
floor damage/mining on confined water/UDEC 7.0/network parallel electrical method分类
矿业与冶金引用本文复制引用
李迎富,曾凡刚..新集二矿承压水上开采底板破坏深度研究[J].煤炭与化工,2024,47(8):49-55,7.基金项目
安徽省自然科学基金项目(2208085QE144) （2208085QE144）
