赵庄煤矿三盘区巷道断面合理宽度取值分析  

Analysis on reasonable width of gateway section in No.3 panel of Zhaozhuang Coal Mine

作　　者：张毅[1,2] 刘东[1] 罗浪[1] 凡龙飞 薛磊[1] 董宁[1] 李铁[1] 

机构地区：[1]中国矿业大学(北京)力学与建筑工程学院,北京100083 [2]中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室,北京100083

出　　处：《河南理工大学学报（自然科学版）》2017年第5期17-22,共6页Journal of Henan Polytechnic University（Natural Science）

基　　金：国家自然科学基金面上项目(51274204);中央高校基本科研业务费专项资金资助项目(2010QL04)

摘　　要：为确定赵庄煤矿3307巷道最合理的巷道宽度取值,采用弹塑性力学能量法理论、薄板理论以及相关的支护理论,通过数学理论推导,得出了煤巷顶板跨中挠度与煤巷宽度的关系曲线。研究表明:当断面宽度小于4.8 m时,顶板处于预压状态,围岩相对稳定,顶板沉降量亦符合安全值;当断面宽度大于4.8 m时,随着巷道宽度增加,顶板跨中挠度快速增大,直至煤巷顶板破坏。根据理论计算结果,确定赵庄煤矿3307巷道断面宽度理论合理值为4.8~5.2 m。该研究成果不仅能指导赵庄煤矿巷道断面设计,而且也可为其他同类巷道断面设计提供理论参考。In order to study the most reasonable gateway width of coal face 3307 of Zhao Zhuang Coal Mine, by using the theory of elastic and plastic mechanics, the theories of thin plate, and related supporting theory in the research, the relationship between the mid-span of gateway and its width was obtained. Theoretical study showed that the roof is in pre-pressure state, surrounding rock is relative stability, roof subsidence is also in line with the safety value when the geteway width is less than 4.8 m. With the increase of the gateway width,roof span deflection increases rapidly until coal gateway roof damage when the section width is greater than 4.8 m. The theoretical calculation results determine that the most reasonable value of geteway width of coal face 3307 in Zhaozhuang coal mine is 4.8 - 5.2 m. The result not only guides the design for Zhaozhuang coal mine,but also provides a reference for other coal mines.

关 键 词：煤巷 跨中挠度 薄板理论 巷道宽度 

分 类 号：TD353[矿业工程—矿井建设]