大断面巷道非均匀变形规律及稳定性控制王栋栋1，张盈2（1.河北能源职业技术学院矿产资源与建工系，河北唐山063000；2.华北理工大学矿业工程学院，河北唐山063000）摘要：为探究受采动影响下的大断面巷道围岩变形规律与稳定性控制，以某矿9103运输巷为背景，采用现场观察及数值模拟方法分析“一掘一采”期间大断面巷道的围岩应力、塑性区、位移分布特征，并结合现场提出了补强支护方案。结果表明：该类大断面巷道围岩垂直应力分布呈明显的非对称性，巷道距离相邻工作面越近，煤柱帮塑性区域越大，工作面离巷道距离越近，巷道围岩位移量越大。通过对巷道肩角及煤柱帮进行针对性加强支护后，巷道围岩变形情况能够保证工作面的安全回采。关键词：大断面巷道；非均匀变形；一掘一采；围岩控制中图分类号：TD322文献标志码：A文章编号：1008－8725（2023）02－054－04Non-uniformDeformationLawandStabilityControlofLargeSectionRoadwayWANGDongdong1,ZHANGYing2(1.DepartmentofMineralResourcesandConstructionEngineering,HebeiEnergyCollegeofVocationandTechnology,Tangshan063000,China;2.MiningEngineeringCollege,NorthChinaUniversityofScienceandTechnology,Tangshan063000,China)Abstract：Inordertoexplorethedeformationlawandstabilitycontrolofsurroundingrockoflargesectionroadwayundertheinfluenceofmining,taking9103transportationroadwayofamineasthebackground,thefieldobservationandnumericalsimulationmethodsareusedtoanalyzethedistributioncharacteristicsofsurroundingrockstress,plasticzoneanddisplacementoflargesectionroadwayduring"oneexcavationandonemining",andthereinforcementandsupportschemeisputforwardincombinationwiththefield.Theresultsshowthattheverticalstressdistributionofsurroundingrockofthiskindoflargesectionroadwayisobviouslyasymmetric.Theclosertheroadwayistotheadjacentworkingface,thelargertheplasticareaofcoalpillarwall,theclosertheworkingfaceistotheroadway,andthegreaterthedisplacementofsurroundingrockoftheroadway.Afterstrengtheningthetargetedsupportofroadwayshoulderangleandcoalpillarwall,thedeformationofroadwaysurroundingrockcanensurethesafeminingoftheworkingface.Keywords:largesectionroadway;non-uniformdeformation;oneexcavationandonemining;surroun...
