神东矿区浅埋大采高工作面支架-围岩耦合关系及支架适用性研究  

Study on the coupling relationship between support and surrounding rock and the applicability of support in shallow buried high mining faces of the Shendong Mining Area

作　　者：王巍 王文[2] 张广杰[3] WANG Wei;WANG Wen;ZHANG Guangjie(National Energy Group Shendong Coal Company,Yulin 719315,Shaanxi,China;School of Energy Science and Engineering,Henan Poly-technic University,Jiaozuo 454000,Henan,China;Henan Institute of Technology Research Institute Co.,Ltd.,Henan Polytechnic University,Jiaozuo 454000,Henan,China)

机构地区：[1]国家能源集团神东煤炭公司,陕西榆林719315 [2]河南理工大学能源科学与工程学院,河南焦作454000 [3]河南理工大学河南理工产业技术研究院有限公司,河南焦作454000

出　　处：《河南理工大学学报(自然科学版)》2025年第2期32-41,共10页Journal of Henan Polytechnic University(Natural Science)

基　　金：国家自然科学基金资助项目(52174109);河南省重点研发项目(241111320800);河南高校创新人才计划(23HASTIT011)。

摘　　要：目的为有效解决神东矿区浅埋大采高工作面开采强度大导致的采场围岩控制困难问题,方法通过理论分析和现场实测方法,结合采场覆岩砌体梁力学模型,阐释了大采高工作面开采支架-围岩耦合关系,并对该矿区特殊条件下采场矿压规律、支架合理工作阻力及其适用性进行了研究。结果结果表明:断裂的老顶及其随动岩体自重、旋转空间对顶板动载荷产生影响较大,直接顶、支架及底板整体刚度对老顶的破断位置产生影响,使老顶来压时对支架的作用力变小、作用时间变短;支架-围岩间存在刚度、强度、稳定性等耦合关系。结论提出基于支架实用效果的“支、护、采”三因素法并对其适用性进行评价,采用岩石自重估算、实测支架循环末工作阻力加1倍均方差及传递岩梁理论等方法对支架工作阻力进行验算,并得到了合理的支架工作阻力。为相似条件下支架选型及其适用性评价工作提供科学指导。Objectives To address the challenges of controlling surrounding rock in shallow-buried,high-intensity mining faces in the Shendong mining area,this study investigates the coupling relationship be-tween supports and surrounding rock structures.Methods The research combines theoretical analysis with field measurements,employing the“masonry beam”mechanical model of overlying rock to analyze the in-teraction between supports and surrounding rock in high-mining faces.Results The study examines mining pressure patterns,optimal support working resistance,and its applicability under specific conditions in the mining area.Findings indicate that the self-weight and rotational deformation of fractured roof rock masses significantly influence the dynamic load on the roof.The combined stiffness of the“immediate roof,sup-port,and floor”affects the fracture location of the main roof,reducing both the force and duration of roof pressure acting on the support.A coupling relationship between supports and surrounding rock exists,char-acterized by stiffness,strength,and stability.Conclusions A“support,protection,and mining three-factor method”is proposed to evaluate the applicability of supports.Methods such as estimating rock self-weight,analyzing measured end-of-cycle support resistance with an added standard deviation,and applying the rock beam transmission theory are used to validate the working resistance of supports.These findings pro-vide a scientific basis for support selection and applicability evaluation under similar conditions.

关 键 词：大采高工作面 支架-围岩耦合 矿压规律 工作阻力 适用性分析 

分 类 号：TD353[矿业工程—矿井建设]