欢迎访问《金属矿山》杂志官方网站,今天是 分享到:
×

扫码分享

金属矿山 ›› 2013, Vol. 42 ›› Issue (04): 19-23.

• 采矿工程 • 上一篇    下一篇

马头门底鼓机理及防治技术研究

孟超1,2,3,符利军1,2,4,曹世超5   

  1. 1.中国矿业大学矿业工程学院;2.深部煤炭资源开采教育部重点实验室;3.神华海外俄罗斯公司;4.中煤集团山西金海洋能源有限公司高山煤业;5.邢台职业技术学院
  • 出版日期:2013-04-15 发布日期:2013-05-13

Study on Floor Heave Mechanism and its Prevention and Control Technology of Horsehead

Meng Chao1,2,3,Fu Lijiun1,2,4,Cao Shichao5   

  1. 1.College of Mine,China University of Mining & Technology;2. Key Laboratory of Deep Coal Resource Mining,Ministry of Education;3.Shenhua Overseas Russian Co.,Ltd.;4.Sinocoal Group Shanxi Golden Ocean Energy Co., Ltd.;5.Xintai Polytechnic College
  • Online:2013-04-15 Published:2013-05-13

摘要: 根据麦垛山煤矿副立井马头门围岩地质条件及巷道开挖支护后的围岩变形破坏情况,对其围岩力学性质特征进行了分析研究,揭露了巷道支护中存在的问题。根据马头门巷道底板的变形特征,分析认为造成底鼓的主要原因为底板岩层遇水强度弱化,并在受两帮挤压作用下,底板岩层弯曲变形,进而导致底鼓。基于巷道底鼓机理及原因,综合采取施工反底拱,打底板锚杆和底角锚索以及底板围岩注浆加固的防治技术措施对底板变形破坏进行控制;现场试验表明,该措施条件下底板变形得到了有效控制。

关键词: 马头门, 底鼓机理, 巷道支护, 数值模拟

Abstract: According to the geological conditions of horsehead surrounding rock of maiduoshan coal mine and the roadway deformation law after excavated,the mechanical characteristic of surrounding rock is studied,with some supporting problems exposed. In the light of the damaged feature of horsehead floor,it is considered that the floor heave is caused by floor strata curve,squeezed by the both sides of roadway,especially when it encounters with water. Based on the mechanism of and reasons for floor heave,some reinforcement measures including inverted-arch,floor bolt and bottom angle anchor,and floor grouting of surrounding rocks are taken to control the floor deformation. The on-site tests indicates that the floor deformation is effectively controlled through the measures above.

Key words: Horsehead, Floor heave mechnanism, Roadway supporting, Numerical simulation