摘要
以中煤塔山煤矿多煤层采空区下特厚煤层30509工作面为工程背景,通过变形预测模型、数值模型、现场测试分析等多种方法研究了多层采空区下特厚煤层开采沉陷特征,揭示了中煤塔山煤矿特厚煤层开采地表裂缝、台阶下沉的发育规律,计算出地表下沉盆地的部分角量参数:上山边界角γ0=63°,上山移动角γ=69°,上山裂缝角γ”=79°。研究结果可为类似条件下工作面岩移特征、土地复垦、采场规划与管理提供理论依据与工程参考。
Taking No.30509 working face of China Coal Tashan Coal Mine as the engineering background,various methods were used to study the subsidence characteristics of ultra-thick coal seam under multilayer goaf,including deformation prediction model,numerical model,and field test.The results revealed the development laws of surface cracks and stage sinking in the ultra-thick coal seams and obtained the partial angle parameters of the subsidence basin:uphill boundary angleγ0 is 63°,uphill moving angleγis 69°,and uphill cracking angleγ”is 79°.The research results could provide theoretical basis and engineering reference for rock movement characteristics,land reclamation,mining area planning and management under the similar circumstances.
作者
王顺利
杨亚威
杨永康
WANG Shunli;YANG Yawei;YANG Yongkang(China Coal Datong Energy Co.,Ltd.,Datong 037000,China;Institute of Mining Technology,Taiyuan University of Technology,Taiyuan 030024)
出处
《山西煤炭》
2019年第3期1-5,共5页
Shanxi Coal
基金
国家自然科学基金资助项目（51404167）
山西省重点研发计划项目（社会发展方面201803D31051）
中国博士后科学基金资助项目（2016M590151）
关键词
开采沉陷
多层采空区
沉陷特征
mining subsidence
multilayer goaf
subsidence characteristics
