厚松散层条件下综放开采地表沉陷规律与机理

Surface Subsidence Rule and Mechanism of Full-mechanized Caving Mining Face under Thick Loose Bed

在分析研究司马煤矿地表移动观测资料的基础上,研究了厚松散层条件下综放开采的地表移动特征。并采用数值模拟的手段,分别揭示了松散层、基岩岩性及厚度对地表沉陷规律的影响,解释了厚松散层条件下开采地表下沉系数偏大的机理。研究成果对安全合理地开采厚松散层、综放矿井"三下"压煤具有重要的参考价值。

Based on analysis of surface movement observation data from Sima Colliery,surface movement characteristic of full-mining caving mining under thick loose bed was researched.The influence of loose bed,lithology and thickness of bed rock on surface subsidence was revealed by numerical simulation.The cause that surface subsidence ratio was larger under thick loose bed was explained.The result might provide important reference for full-mechanized caving mining under thick loose bed when mining under railway,village and buildings.