采矿工程锚杆支护技术研究摘要在煤炭生产中,为了满足煤炭生产的要求,必须开挖许多条巷道。在煤炭资源日益丰富的今天,煤炭资源日益丰富,对煤炭资源的开发利用也有了新的需求。由于新采空区没有得到有效的支撑,因此,在采空区围岩应力的影响下,新采空区的围岩剖面将大大减小,严重影响采空区的安全。这种类型的巷道因其寿命较长,通常仅为2至3年,因此对其支护费用提出了较高的要求。在煤层开采过程中,由于其速度快,成本低,且具有较高的安全性,所以在煤层开采过程中,很有可能应用到煤层开采过程中。文章从锚杆的概念,工作原理,支护形式等几个角度对锚杆的作用效果进行了分析,并对锚杆的作用效果进行了分析。通过对锚杆支护系统的选择与锚杆支护强度的选择,合理的锚杆支护设计参数的选取,加强锚杆支护施工质量的管理,选择合理的复合支护形式,加强巷道支护质量,并对矿井压力的显露进行监控,对锚杆支护工艺的关键问题进行了讨论。同时,对干河矿区的采场支护工艺进行了浅析。关键词:煤矿产业:掘进巷道:锚杆支护ABSTRACTIn coal production,in order to meet the requirements of coal production,many roadwaysmust be excavated.In today's increasingly rich coal resources,coal resources are increasingly rich,and the development and utilization of coal resources are also of new demand.Because the newgoaf is not effectively supported,the surrounding rock profile of the new goaf will be greatlyreduced under the stress of the goaf,which seriously affects the safety of the goaf.This type ofroadway because of its long life,usually only 2 to 3 years,so the support cost is put forward higherrequirements.In the process of coal seam mining,due to its fast speed,low cost,and high safety,itis likely to be applied to it in the process of coal seam mining.This paper analyzes the effect ofanchorage from the perspectives of its concept,working principle and support form.Through theselection of bolt support system and the selection of bolt support strength,the selection ofreasonable bolt support design parameters,strengthen the management of bolt support constructionquality,choose the reasonable composite support form,strengthen the quality of roadwaysupporting support,and monitor the mine pressure exposed,the key problems of bolt supportprocess are discussed.At the same time,the stope support technology of Ganhe mining area isanalyzed.KEY WORDS:Coal mining industry;tunneling roadway;anchor bolt support目录第一章绪论.11.1研究背景。.11.2研究意义…1第2章煤矿开采锚杆支护技术概述.22.1锚杆支护技术的概念.22.2锚杆支护结构的作用原理…22.2.1组合梁作用.22.2.2悬吊作用.22.2.3减小跨度作用….32.2.4围岩加固作用….32.3煤矿掘进巷道锚杆支护方式的应用。.32.3.1悬臂煤矿掘进巷道锚杆支护方式.32.3.2采掘一体巷道锚杆支护方式..32.3.3煤矿掘进巷道锚杆支护方式」0.4第3章锚杆支护有效性的施工影响因素..53.1锚杆钻孔深度控制不合理….53.2锚杆安装角度不合理..53.3三径匹配不合理….53.4树脂药卷搅拌不充分….53.5锚杆预紧力控制不足6第4章锚杆支护技术控制要点..74.1选择配套的锚杆支护体系和锚杆强度4.2选择合理的锚杆支护设计参数.74.3加强锚杆支护施工质量管理….74.4选择合理的联合支护方式.….84.5加强巷道支护质量及矿压显现监测.8第5章干河煤矿矿井锚杆支护分析…·95.1工程概况。95.2高预应力锚杆支护分析….95.2.1锚杆预紧力控制顶板离层效果试验95.2.2锚索预紧力对顶板支护效果影响….105.3支护方案.115.4支护效果分析….125.5工程小结13第6章结论.….15参考文献.16致谢.18
暂无评论内容