沿空留巷底鼓机理及钢排桩法防治技术研究  

Study on Floor Heave Mechanism of Gob-side Entry Retaining and Control with Steel Pile Method

作　　者：黄小朋[1] 张鹏鹏[1,2] 刘中熙 钱翰飞 HUANG Xiaopeng;ZHANG Pengpeng;LIU Zhongxi;QIAN Hanfei(Callege of Mining Engineering, Taiyuan University of Technology, Taiyuan 030024, China;Zhongxing Coal Company, Fenxi Mining Group, Jiaocheng 030500, China)

机构地区：[1]太原理工大学矿业工程学院,山西太原030024 [2]汾西矿业集团中兴煤业公司,山西交城030500

出　　处：《煤矿安全》2018年第5期159-162,166,共5页Safety in Coal Mines

基　　金：山西省科技重大专项资助项目(20121101009-03);山西省自然科学基金重点资助项目(2014011044)

摘　　要：针对中兴矿1204工作面轨道巷沿空留巷在工作面2次回采动压影响下巷道底鼓变形严重问题,分析可知底鼓主要由一次回采期间基本顶大结构断裂载荷影响及留巷期间和二次回采期间岩石发生峰后蠕变而形成。针对性地提出了钢排桩治理方案,钢排桩通过自身的抗弯及抗剪性能来减弱桩后岩体对巷内岩体挤压,提高了巷道底板整体稳定性,较锚杆支护,可有效减小巷道底鼓变形量,技术和经济价值显著。In view of the serious deformation of roadway floor heave in track lane gob-side entry retaining of 1204 working face of Zhongxing Mine, which is influenced by the two mining dynamic pressure of the face, the analysis shows that the floor heave is mainly formed by the crippling load of large-scale structure in the mining period, and the post peak creep of rock during the gobside entry retaining and two times mining period. In light of this situation, the plan of steel pile arrangement is proposed. It can not only weaken the extrusion to the rock mass in the tunnel by its own bending and shearing behavior, but also improve the whole stability of roadway bottom. Compared with bolt support, steel pile can effectively reduce the deformation of floor heave, and has significant technical and economic value.

关 键 词：沿空留巷 底鼓机理 钢排桩法 巷道稳定性 锚杆支护 

分 类 号：TD327.3[矿业工程—矿井建设]