锚杆锚索预紧力对深部特厚松软煤层巷道顶板影响研究  

Study on the Influence of Pretightening Force of Bolt and Anchor Cable on Roadway Roof in Deep Extra-thick Soft Coal Seam

作　　者：李志臣 周臣[1] 李廷春[1] 朱庆文[1] 张治高 LI Zhichen;ZHOU Chen;LI Tingchun;ZHU Qingwen;ZHANG Zhigao(Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation,Shandong University of Science and Technology,Qingdao,Shandong 266590,China;Shandong Xinjulong Energy Co.,Ltd,Heze,Shandong 274918,China)

机构地区：[1]山东科技大学山东省土木工程防灾减灾重点实验室,山东青岛市266590 [2]山东新巨龙能源有限责任公司,山东菏泽市274918

出　　处：《矿业研究与开发》2020年第6期63-67,共5页Mining Research and Development

基　　金：国家自然科学基金资助项目(41772299).

摘　　要：以新巨龙煤矿2306S特厚煤层巷道为工程背景,基于锚杆、锚索协同支护原理,采用数值模拟方法对深部特厚松软煤层巷道锚杆-锚索预紧力匹配性进行研究。结果表明:在锚索长度满足条件的情况下,锚索预紧力是影响巷道顶板变形的最主要因素。对于深部特厚松软煤层巷道,锚杆锚索预紧力匹配值分别为50/120kN和70/170kN时,锚杆、锚索协同作用最好,通过在新巨龙煤矿2306S巷道的现场实施,验证了该结论的正确性。Taking the 2306 Sroadway in extra-thick coal seam of Xinjulong Coal Mine as the engineering background,based on the principle of synergetic supportwith bolt and anchor cable,the matching property between pretightening forces of bolt and anchor cable was studied by numerical simulation for roadway in deep extra-thick soft coal seam.The results show that the when the length of the anchor cable met the requirements,the pretightening force of anchor cable has the greatest influence on the deformation of roadway roof.For roadway in deep extra-thick soft coal seam,when the matching values of pretightening forces of bolt and anchor cable are 50/120 kN and 70/170 kN respectively,the synergistic effect of bolt and anchor cable is the best.The correctness of the conclusion was verified by the field implementation of 2306 Sroadway in Xinjulong Coal Mine.

关 键 词：深部特厚煤层 锚杆锚索预紧力 协同支护 数值模拟 

分 类 号：TD353[矿业工程—矿井建设]