浅拱底梁支架底鼓控制技术研究  

Study on control technology of shallow arch floor beam support in preventing floor heave

作　　者：刘建庄[1] 杨忠东[2] 刘树第 郭立稳[1] 

机构地区：[1]华北理工大学河北省矿业开发与安全技术重点实验室,河北唐山063009 [2]开滦集团有限责任公司,河北唐山063000

出　　处：《采矿与安全工程学报》2015年第4期565-570,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51374088);河北省高校科学研究项目(Z2003144);唐山市科技计划项目(13130204z)

摘　　要：克服现有深拱底梁闭式支架的不足,设计试制了具有较高水平抗力的浅拱底梁,摸索了其棚腿搭接方法。利用ANSYS12.1模拟对比了浅拱底梁与深拱底梁的受力特征,结果表明均布载荷下浅拱底梁极值应力受矢高影响更为敏感,弯曲应力所占比重较小,空间稳定性更强;在水平挤压作用下,底梁弯曲受力为主要承载模式,弯矩与应力随着矢高的加大线性增加,前者抵抗水平变形能力远优于后者,更适合对于剪切滑移型底鼓的控制。开滦林南仓矿软岩巷道的工程应用,证实了受力分析的正确性,体现了浅拱底梁在治理剪切滑移型底鼓中的优越性。The existing available closed support has some defects in application because of its deep arch floor beam. Therefore,a new support with higher horizontal resistance, characterized by shallow arch floor beam has been designed in this research, and also its leg-shed-lapping method has been analyzed. By using ANSYS12.1, the mechanical characteristics of shallow arch floor beam and deep arch floor beam have been simulated and analyzed. The results have indicated that the former one has more capacity to bear horizontal extruding force under uniform load intensity of 1 k N/m, and the bending stress takes up less parts, and it has better spatial stability and is more sensitive to sagitta. Moreover, the shallow arch floor beam had another advantage in bearing horizontal concentrated load, which is important to prevent shear-slip floor heave. The shallow beam has been proved to be effective in controlling floor heave in Linnancang Coal Mine in Kailuan, which has verified the accuracy of the simulating results.

关 键 词：浅拱底梁 软岩巷道 剪切滑移型底鼓 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]