回风巷道支护方案优化及数值模拟研究  

Optimization of support scheme for return air lane and numerical simulation study

作　　者：经来旺[1] 崔子琦 经纬[1] JING Laiwang;CUI Ziqi;JING Wei(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《建井技术》2025年第2期41-47,共7页Mine Construction Technology

基　　金：安徽省博士后科研活动资助项目(2022B640);深部煤矿采动响应与灾害防控国家重点实验室开放基金(SKLMRDPC19KF02)。

摘　　要：针对核桃峪煤矿2803回风巷道大埋深、高应力和巷道变形等综合问题,采用了“上下帮差异强度支护法”“护帮控底、强底控帮”原理以及帮顶圆角过渡设计等技术手段,对原支护方案进行了改进,并进行了数值模拟分析。通过模拟得出,改进后的方案能够有效减少巷道围岩塑性区半径,显著抑制巷道围岩变形,使巷道变形更加稳定。进一步的现场验证表明,改进后的支护方案能够有效控制试验段巷道的变形,优于原有支护方案。This study addresses the complex issues of deep burial,high stress,and tunnel deformation in the 2803 return air tunnel of the Hetaoyu Coal Mine.The original support scheme was optimized using advanced techniques,including the"differential strength support method for the upper and lower sides",the principle of"side support controlling the floor with strong floor support controlling the sides"and a rounded corner transition design for the side and roof.Numerical simulations were conducted to assess the performance of the improved scheme.The results indicated that the modified approach effectively reduced the radius of the plastic zone in the surrounding rock,significantly suppressed rock deformation,and enhanced tunnel stability.Subsequent field verification confirmed that the improved support scheme successfully controlled tunnel deformation in the test section,demonstrating superior performance compared to the original support plan.

关 键 词：联合支护 围岩变形 数值模拟 围岩塑性区 底角锚杆 

分 类 号：TD263[矿业工程—矿井建设]