非等压条件下巷道围岩卸压技术适用性研究

金属矿山 ›› 2025, Vol. 54 ›› Issue (12): 18-28.

非等压条件下巷道围岩卸压技术适用性研究

赵洪宝^1,2　李作泉^1,2　程　辉³

1.中国矿业大学(北京)能源与矿业学院,北京 100083;2.中国矿业大学(北京)新能源开发与灾害防治研究中心,北京 100083; 3.广西大学资源环境与材料学院,广西南宁 530004

出版日期:2025-12-15 发布日期:2025-12-30
作者简介:赵洪宝(1980—),男,教授,博士,博士研究生导师。
基金资助:
　国家重大科技专项课题(编号:2024ZD1004503),河北省生态智慧矿山联合基金项目(编号:E2020402036)。

Study on the Applicability of Roadway Surrounding Rock Pressure Relief Technology under Non-isobaric Conditions

ZHAO Hongbao^1,2　LI Zuoquan^1,2　CHENG Hui³

1.School of Energy and Mining Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China; 2.New Energy Development and Disaster Prevention Research Center,China University of Mining and Technology-Beijing, Beijing 100083,China;3.School of Resources,Environment and Materials,Guangxi University,Nanning 530004,China

Online:2025-12-15 Published:2025-12-30

摘要/Abstract

摘要： 巷道所处应力环境对围岩卸压效果具有重要影响。为探究卸压槽对不同应力环境下巷道卸压效果及卸压适用性,采用理论分析、数值模拟和现场应用的方法对非等压条件下巷道围岩卸压技术适用性进行分析。研究结果表明:卸压槽开挖会使围岩浅部应力集中向深部转移。以侧压系数λ=1为分界,当λ<1时,巷道最大剪应力主要集中于顶底板浅部;λ>1时,应力集中区转向顶底板深部。侧压系数越大,卸压槽对巷道围岩的控制效果越好,但总体上更有利于巷道两帮的稳定性。随着侧压系数的增大,巷道两帮开槽优化比例基本呈负指数函数逐渐降低,顶底板开槽优化比例逐渐增加。结合对不同应力环境下巷道卸压效果分析,依据某矿井巷道围岩的应力特征,提出针对性的控制措施并取得了良好的应用效果。

关键词: 巷道卸压　卸压槽　侧压系数　最大剪应力　围岩收敛量

Abstract: The stress environment of roadway has an important influence on the pressure relief effect of surrounding rock. In order to explore the pressure relief effect and applicability of pressure relief groove on roadway under different stress environ ments,the applicability of pressure relief technology of roadway surrounding rock under unequal pressure conditions was ana lyzed by theoretical analysis,numerical simulation and field application.The results show that the excavation of the pressure re lief groove will transfer the stress concentration in the shallow part of the surrounding rock to the deep part.The lateral pressure coefficient λ is divided by 1.When λ<1,the maximum shear stress of the roadway is mainly concentrated in the shallow part of the roof and floor.When λ>1,the stress concentration area turns to the deep part of the roof and floor.The larger the lateral pressure coefficient,the better the control effect of the pressure relief groove on the surrounding rock of the roadway,but it is generally more conducive to the stability of the two sides of the roadway.With the increase of the lateral pressure coefficient, the optimization ratio of the two sides of the roadway is gradually reduced in a negative exponential function,and the optimiza tion ratio of the roof and floor is gradually increased.Combined with the analysis of the effect of roadway pressure relief under different stress environments,according to the stress characteristics of the surrounding rock of the mine roadway,targeted con trol measures were proposed and good application results were achieved.

Key words: roadway pressure relief,pressure relief groove,coefficient of lateral pressure,maximum shear stress,sur rounding rock convergence

中图分类号:

TD322

赵洪宝, 　李作泉, 　程　辉. 非等压条件下巷道围岩卸压技术适用性研究[J]. 金属矿山, 2025, 54(12): 18-28.

ZHAO Hongbao, 　LI Zuoquan, 　CHENG Hui. Study on the Applicability of Roadway Surrounding Rock Pressure Relief Technology under Non-isobaric Conditions[J]. Metal Mine, 2025, 54(12): 18-28.

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