深部高应力巷道非对称底鼓成因分析及防治技术研究  

Research on Cause Analysis and Prevention Technology of Asymmetric Floor Heave in Deep High Stress Roadway

作　　者：王港盛 杨鹏飞 WANG Gangsheng;YANG Pengfei(China Coal Technology&Engineering Group Minining Research Institute Co.,Ld.,Beijing 100013.China;Information Institute,Ministry of Emergency Management of the People's Republie of China,Beijing 100013,China)

机构地区：[1]中煤科工开采研究院有限公司,北京100013 [2]应急管理部信息研究院,北京100013

出　　处：《煤炭技术》2023年第1期25-29,共5页Coal Technology

基　　金：国家自然科学基金项目(51804159)。

摘　　要：潞安集团漳村煤矿21采区轨道采动作用下底鼓量增大,呈现非对称变形特征,影响工作面生产,依据朗肯土压力理论分析巷道底鼓的受力机理,确定底板发生全断面破坏,破坏极限深度4.28 m,距离巷道左帮1.94 m;基于巷道底板变形特征,提出底板切槽防治方案,利用悬臂梁模型确定切槽参数4.5 m×0.7 m(高×宽),并利用数值模拟和现场工业性试验验证,数值模拟确定底板切槽后较未切槽条件下巷道底板浅部围岩平均应力值降低约53.41%,对巷道两帮应力集中现象具有一定改善作用;现场工业性试验确定切槽后底鼓量降低了81.56%,且稳定时间较未切槽条件下提前了30 d,效果显著,为矿井安全高效生产奠定基础。The size of the mortar in the mineral mineral 21,the amount of drum is increased,and the characteristics of asymmetric deformation are increased.It affects the production of work surface.According to the Langken Earth pressure theory,the force mechanism of the drum of the roadway is determined that the bottom plate has broken down.Destroy the limit depth of 4.28 m,distance 1.94 m from the roadway;based on the deformation characteristics of the roadway floor,the bottom plate slotting control scheme is proposed,and the slot parameter is determined by the cantilever beam model4.5 m×0.7 m(high×width),and the numerical simulation and on-site industrial test verification,numerical simulation determined that the average stress value of the shallow depth of the shallow depth of the lane on the lower roadway under cut slot was reduced by about 53.41%,and the phenomenon of two parties in the roadway had certain improvements;on-site industrial test determination after the groove,the bottom amount was reduced by 81.56%,and the stable time was 30 days in advance,the effect was remarkable,and the foundation was laid the foundation for the safety and efficiency of mine.

关 键 词：采动影响 巷道底鼓 巷道底板全断面破坏 卸压槽防治 

分 类 号：TD315[矿业工程—矿井建设] TD325