基于能量耗散理论的深部巷道支护方案优化研究  

Study on Optimization of Supporting Scheme of Deep Roadway based on Energy Dissipation Theory

作　　者：秦绍楠 QIN Shaonan(Gaohe Energy Limited Company of Lu'an Chemical Group,Changzhi 047100,China)

机构地区：[1]潞安化工集团高河能源有限公司,山西长治047100

出　　处：《煤》2023年第11期19-23,共5页Coal

基　　金：国家自然科学基金青年科学基金项目(52204121)。

摘　　要：针对W4307-2工作面回风巷变形严重,原支护方案失效的情况,提出能量耗散理论的巷道围岩变形控制方案。首先通过建立围岩能量耗散模型,确定能量耗散是围岩破坏的本质原因,当围岩支护控能不小于耗散能时,围岩不再破坏。同时通过原支护和优化支护方案数值模拟对比,确定优化支护方案能对围岩做更多的功,改善巷道围岩变形。经过现场监测可知,确定优化支护方案较原始支护方案能提前使巷道围岩稳定,且不同阶段围岩变形控制效果均高于50%.因此,基于能量耗散理论的优化支护方案能够有效控制围岩变形。In view of the serious deformation of the return air roadway in W4307-2 working face and the failure of the original supporting scheme,the control scheme of the roadway surrounding rock deformation based on the energy dissipation theory is put forward.Firstly,the energy dissipation model is established to confirm that the energy dissipation is the essential cause of the failure of the surrounding rock.At the same time,through the numerical simulation comparison of the original support and the optimized support scheme,it is determined that the optimized support scheme can exert more work on the surrounding rock and improve the deformation of the roadway surrounding rock.Through field monitoring,it can be concluded that the optimized support scheme can make the surrounding rock more stable than the original one,and the control effect of the surrounding rock deformation in different stages is higher than 50%.Therefore,the optimal support scheme based on energy dissipation theory can effectively control the deformation of surrounding rock.

关 键 词：能量耗散 支护控能 分层支护 变形率 

分 类 号：TD353[矿业工程—矿井建设]