摘要
为了研究条带式Wongawilli采煤法煤柱破坏演化特征及控制技术,丰富条带式Wongawilli开采理论研究基础,采用理论分析与相似模拟相结合的方法,观测分析了条带式Wongawilli开采煤柱破坏的演化特征,提出了针对性的控制技术措施。分析研究表明,煤柱试样最终多数表现为近乎平行于竖直轴向的劈裂破坏,其承载力受煤柱类型、尺寸、支护等影响,煤柱破坏变形主要有锥形状破坏变形、纵向裂隙破坏变形、劈裂和崩落破坏变形3种形式。
To study the strip Wongawilli mining coal pillar failure evolution characteristics and its control technology, enrich the research foundation of strip Wongawilli mining theory. This paper adopts the method of theoretical analysis and similarity simulation to observe and analyze the damage evolution characteristics of coal pillar in strip Wongawilli mining, and the control measures are put forward. The results show that the uhimate performance of the coal pillar rock sample is that it is almost parallel to the axial direction, and the bearing capacity is influenced by the type, size and support of the coal pillar, and there are 3 main forms of the failure and deformation of the coal pillar.
出处
《中国科技论文》
北大核心
2017年第15期1749-1753,共5页
China Sciencepaper
基金
国家自然科学基金资助项目(U1261206)
高等学校博士学科点专项科研基金资助项目(20134116110004)
