深部厚煤层回采巷道支护设计及围岩控制研究  

Research on support design and surrounding rocks control in deep thick coal seam mining roadway

作　　者：尚文政 刘志刚 游武超 袁健博 SHANG Wenzheng;LIU Zhigang;YOU Wuchao;YUAN Jianbo(Mining Engineering Research Institute,Shandong University of Science and Technology,Tai'an 271019,China;Shandong Jingtai Engineering Science and Technology Co.,Ltd.,Zibo 255410,China;Shandong Energy Group Co.,Ltd.,Jinan 250013,China)

机构地区：[1]山东科技大学采矿工程研究院,山东泰安271019 [2]山东敬泰工程科技有限公司,山东淄博255410 [3]山东能源集团有限公司,山东济南250013

出　　处：《煤矿安全》2024年第9期139-148,共10页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51674159,51804186)。

摘　　要：为研究深部厚煤层回采巷道支护设计问题,基于唐阳煤矿432运输巷道,从安全及支护成本角度出发提出3种支护设计方案;采用理论分析、数值模拟和工程实践的方法分别研究了各方案支护参数的取值、位移变形量、塑性区及支护方案实际支护效果。理论分析结果表明:3种支护方案选取的锚杆锚索参数及间排距均符合理论计算值。数值模拟结果表明:支护方案Ⅰ顶底板及两帮相对位移变形量分别为77.6、103.4 mm,支护方案Ⅱ为79.7、105.5 mm,与支护方案Ⅰ相近且塑性破坏单元最少,支护方案Ⅲ位移变形量最大分别为83.8、111.1 mm;在支护效果相近的情况下,支护方案Ⅱ的支护成本仅为方案Ⅰ的64.7%。工程实践结果表明:支护方案Ⅱ的实际支护效果能实现巷道的安全支护。To study the support design of deep thick coal seam roadway, we propose three support design schemes from the perspective of safety and support cost based on the 432 belt transportation roadway in Tangyang Coal Mine. Theoretical analysis, numerical simulation and engineering practice were used to study the values of the support parameters, displacement and deformation, plastic zone and the actual support effect of each scheme. The theoretical analysis results show that the anchor parameters and row spacing of the three support schemes are in line with the theoretical calculation values. Numerical simulation results show that: the relative displacement and deformation of the top and bottom plates and the two sides of support scheme Ⅰ are 77.6 mm and 103.4 mm, respectively;the relative displacement and deformation of support scheme Ⅱ are 79.7 mm and 105.5 mm, which are similar to those of support scheme Ⅰ and have the least plastic failure elements;the maximum displacement and deformation of support scheme Ⅲ are 83.8 mm and 111.1 mm, respectively. The support cost of support scheme Ⅱ is only 64.7% of that of scheme Ⅰ when the support effect is similar. The engineering practice results show that the actual support effect of support scheme Ⅱ can realize the safety support of roadway.

关 键 词：巷道支护 围岩控制 数值模拟 塑性区 位移变形 支护方案 

分 类 号：TD353[矿业工程—矿井建设]