煤泥岩硐室群区巷道底臌控制机理及应用  

Floor Heave Control Technology of Ingate Surrounding with Coal and Soft mudstone in Chamber Group

作　　者：张守宝[1] 李政 王宇[1] 王刚[1] 张振波[1] 任超[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《应用基础与工程科学学报》2017年第4期712-723,共12页Journal of Basic Science and Engineering

基　　金：国家自然科学基金重点资助项目(51234005);教育部博士学科点资助项目(20110023120002);中央高校基本科研业务费资助项目(2009QZ10)

摘　　要：煤矿巷道底臌治理一直是巷道支护中重点攻关的难题之一,作为永久巷道的马头门来说,底臌的有效控制尤为重要.针对霍州煤电集团辛置煤矿马头门巷道底臌量达到2 500mm的难题,首先从巷道围岩条件、应力条件、巷道空间位置和支护方式4个方面分析了引起巷道底臌的主要原因;其次,结合现有底板支护技术和马头门巷道底臌破坏的先后顺序和破坏特点,提出了底板治理的反底拱倒"T"型浇筑控制机理,采用反底无铰拱支护结构代替现有传统的底板平底浇筑结构,并分别利用数值计算和力学建模方法对比分析两种支护结构的弯矩承载力和支护效果,验证了无铰拱支护结构在抵抗源于底板地应力的弯矩方面有较大的优势;最后,设计了底板支护的详细支护参数,并制定了在底板治理实践期间的五步施工法,现场施工结果表明本底板治理技术有效控制了马头门底板的变形.It is always a difficult problem that how to control the floor lift in all of the roadways. Especially for the ingate, as a permanent roadway, it is of importance to control it efficiently. There was a practical problem that the ingate of Xinzhi Mine in Huozhou coal and electricity group had its floor lift to 2 500mm. To solve this problem, firstly, the main reasons of floor lift were analyzed from four aspects such as surrounding rock conditions, stress conditions, roadway position and support method. Secondly, based on the present support technology and the distortion and failure character of floor lift, the inverted T shape pouring support technology with bottom arch was put forward to repair the failure floor. According to the plane pouring floor used commonly and the support structure of bottom arch, the mechanics model of fixed beam and arch without articulation were separately set up to calculate its moment capacity, the results proves that the support structure of arch without articulation has obviously advantage to resistance moment. Lastly, the detail parameters of bottom support were designed, and the five steps construction method was established. The practice shows the floor control technology could successfully repair the ingate floor in Xinzhi mine.

关 键 词：底板治理 无铰拱 倒“T”型 五步施工法 

分 类 号：TD353[矿业工程—矿井建设]