回采巷道交替循环超前支护技术研究与应用  

Research and application of alternate circulation advance support technology for mining entry

作　　者：王琦[1,2,3,4] 王步康 郑毅[2,3,4] WANG Qi;WANG Bukang;ZHENG Yi(China Coal Research Institute,Beijing 100013,China;Taiyuan Institute,China Coal Technology and Engineering Group,Taiyuan,Shanxi 030006,China;Shanxi Tiandi Coal Machinery Co Ltd,Taiyuan,Shanxi 030006,China;National Engineering Laboratory for Coal Mining&Excavation Machinery Equipment,Taiyuan,Shanxi 030006,China)

机构地区：[1]煤炭科学研究总院,北京100013 [2]中国煤炭科工集团太原研究院,山西太原030006 [3]山西天地煤机装备有限公司,山西太原030006 [4]煤矿采掘机械装备国家工程实验室,山西太原030006

出　　处：《采矿与安全工程学报》2022年第4期750-760,共11页Journal of Mining & Safety Engineering

基　　金：山西省基础研究计划项目(20210302124488)。

摘　　要：为解决回采巷道超前支护效率低、支护强度不均、支护装置-围岩适应性差等问题,以塔山矿5222回风巷为研究背景,通过理论分析、数值模拟、工程类比和现场实测等方法对超前支护问题进行系统的研究,提出一种新型超前无反复协同支护技术。在分析支护装置与巷道围岩相互作用的基础上,提出采动影响区全覆盖主动支护、无反复快速支护和协同支护的超前支护理念,研制由单跨门式支护装置与多功能运载装备组成的超前支护运载成套装备,研究长距离间隔布置、由后向前交替循环移架的超前支护方式,提出由锚网索支护系统主动支护+顶板全覆盖、高工阻、可让压加强支护的协同支护原理,实现不同支护的协同互补,在超前支护区域内形成一种由锚网索主动支护系统为主、以长距离超前加强支护系统为辅的协同支护系统。建立基于支护装置-锚杆(索)协同作用的超前支护力学模型,理论分析确定初始协同支护强度为225.00 kPa,采用数值模拟和工程类比综合分析确定超前超前支护距离不低于45 m,通过理论计算和对比分析确定超前支护排距为1 800 mm,设计ZLQ2826/24.5/41.5型临时支护装置,确定交替循环协同支护方案。实践表明,在超前协同支护作用下巷道围岩变形合理,顶板离层得到有效控制,锚杆(索)支护系统得到有效维护,巷道整体支护效果良好,实现了回采巷道长距离安全、高效超前支护。最后,根据超前支护中存在的问题,提出相应改进措施。In order to solve the advance support problems of low support efficiency, uneven support strength, poor adaptability of support devices and surrounding rock in mining entry, the advance support problems were systematically studied by theoretical analysis, numerical simulation, engineering analogy and field practice, and a new type of alternate circulation cooperative advance support technology was proposed in the background of No.5222 tailgate of Tashan Mine. On the basis of analyzing the interaction between advance support devices and entry surrounding rock, the advance support concepts of full coverage active support in mining affected area, no-repeated and rapid support, cooperative support were put forward, a complete set of support and transportation equipment composed of single-span support devices and a multi-functional transportation equipment was developed, and the advance support method of long-distance spacing arrangement and alternate circulation frames from back to front was studied. In addition, the cooperative support principles of active support by anchor-mesh-cable support system and strengthen support with full roof coverage, high resistance and allowable pressure were proposed, the synergistic complementarity of different support methods was realized, and a cooperative support system based on the anchor-mesh-cable active support system and supplemented by the long-distance advance support system was formed in the advance support area. Based on the above research results, the advance support mechanical model based on the synergy of support devices and bolt(cable) support system was established, and the initial cooperative support strength was calculated as 225.00 kPa by theoretical analysis. The advance support distance of not less than 45 m was obtained by numerical simulation and engineering analogy, and the support row spacing of 1 800 mm was determined by theoretical calculation and comparative analysis. In this way, ZLQ2826/24.5/41.5 type of temporary support device was designed, and the al

关 键 词：回风巷 超前协同支护 交替循环 无反复支护 单跨式 

分 类 号：TD353[矿业工程—矿井建设]