“三软”煤层巷道底板破坏深度计算与底鼓控制  

Calculation of Roadway Floor Failure Depth and Floor Heave Control in “Three-Soft” Coal Seam

作　　者：刘玉卫 商铁林[3] 张沛[4] 张亚峰[1] 龚剑 刘应然 LIU Yu-wei;SHANG Tie-lin;ZHANG Pei;ZHANG Ya-feng;GONG Jian;LIU Ying-ran(Zhengzhou University of Technology,Zhengzhou 450044,China;Research Institute of Engineering Technology of Zhengzhou Coal Group,Zhengzhou 450042,China;Yulin University,Yulin 719001,China;Xi’an University of Science&Technology,Xi’an 710054,China)

机构地区：[1]郑州工程技术学院,河南郑州450044 [2]郑煤集团工程技术研究院,河南郑州450042 [3]榆林学院,陕西榆林719000 [4]西安科技大学,陕西西安710054

出　　处：《煤》2021年第9期1-4,14,共5页Coal

基　　金：国家自然科学基金项目(52064047);陕西省科技计划项目(2020SF-418);郑州工程技术学院重点学科建设项目资助。

摘　　要：针对郑州矿区典型的"三软"煤层巷道围岩松散破碎的特点,利用朗肯土压力理论建立巷道底板破坏的受力模型,分析了底板破坏的力学特征,给出了巷道底板破坏的深度公式,阐明了巷道底板的破坏机理,根据巷道底板的综合受力分析提出了底板变形的底鼓公式,结合郑州矿区告成煤矿21051工作面回采巷道实际情况进行了验算,并得到了较好的验证,这为郑州矿区乃至其它具有"三软"煤层特点的矿区巷道稳定支护提供的理论依据。According to the characteristics of loose and broken surrounding rock of typical "three-soft"coal seam roadway in Zhengzhou mining area, the stress model of roadway floor failure is established by using Rankine earth pressure theory, the mechanical characteristics of floor failure are analyzed, the depth formula of roadway floor failure is given, the failure mechanism of roadway floor is clarified, and the floor heave formula of floor deformation is put forward according to the comprehensive stress analysis of roadway floor, Combined with the actual situation of 21051 working face roadway in Gaocheng Mine of Zhengzhou mining area, the checking calculation is carried out, and the verification is better, which provides a theoretical basis for the stability support of roadway in Zhengzhou mining area and other mining areas with the characteristics of "three-soft"coal seam.

关 键 词：郑州矿区 三软煤层 底板破坏 底鼓 

分 类 号：TD353[矿业工程—矿井建设]