特厚煤层软岩大断面煤巷支护技术研究及应用  

Research and Application of Support Technology for Large Section Coal Roadway in Soft Rock of Extra Thick Coal Seam

作　　者：封文茂 Feng Wenmao(Jincheng Coal Industry Department of Jinneng Holding Group Jinmei Taigang Co.,Ltd.,Shanxi Lvliang 033200)

机构地区：[1]晋能控股集团晋城煤炭事业部晋煤太钢有限责任公司,山西吕梁033200

出　　处：《山东煤炭科技》2022年第7期21-23,26,共4页Shandong Coal Science and Technology

摘　　要：为解决山西晋煤一号回风大巷支护的难题,对其原有支护方案条件下矿压特征进行分析探讨,采用极限自稳平衡圈理论优化支护方案及参数,采用FLAC^(3D)软件验证优化支护方案的可行性,实地应用期间进行围岩位移监测。结果表明,顶板下沉量稳定在61 mm,底板底鼓量稳定在83 mm,两帮移近量稳定在129 mm,巷道表面变形量较小,取得了良好的支护效果。In order to solve the difficult problem of the support of Shanxi Jinmei No.1 return air main roadway,the characteristics of mine pressure under the condition of the original support scheme are analyzed and discussed,the support scheme and parameters are optimized by the theory of limit self-stabilizing equilibrium circle,the feasibility of the optimization support scheme is verified by FLAC^(3D) software,and the surrounding rock displacement is monitored during field application.The results show that the roof subsidence is stable at 61 mm,the floor heave is stable at 83 mm,the approach of the two sides is stable at 129 mm,the roadway surface deformation is small,and a good supporting effect is obtained.

关 键 词：特厚 软岩 煤巷 支护 

分 类 号：TD353[矿业工程—矿井建设]