第40卷第9期 2018年9月
开采与运输
能源与环保
China Energy and Environmental Protection
Vol.40 Sep.
No.9 2018
柔模支护沿空巷道锚杆轴
力无损检测评价研究
沙旋'，裘诚鑫23，石浩3,3
（1.山西高河能源有限公司，山西长治047100；2.中国矿业大学深部土力学与地下工程国家重点实验室，
江苏徐州221000；3.中国矿业大学力学与土木工程学院，江苏徐州221000）
摘要：采用锚杆轴力无损检测技术，对柔模支护沿空巷道工作面前方的相对稳定区城和工作面后方的采动影响区域进行了锚杆轴力检测，得到了错杆轴力随工作面推进的变化规律。基于锚杆轴力实测结果与对比分析，提出了柔模支护沿空巷道的非灼称支护方案。通过支护优化后的沿空巷道锚杆轴力和围岩变形监测显示，锚杆工作状态良好，围者变形控制效果好。研究结果表明，在工作面前方相对稳定区域，随着工作面推进，顶板和两帮单根错杆受力变化不大；同一断面煤柱帮锚杆轴力大于实体煤侧帮锚杆受力。在工作面后方柔模支护区，煤柱错杆平均轴力大于柔模帮锚杆平灼轴力，两帮平均轴力随工作面推进距离近似星直线形式增加，工作面采动对煤柱帮影响更大。对柔模支护沿空巷道采用非均称支护方案，可有效控制围岩的变形，节约了支护成本，创造了良好的经济和社会效益。关键调：沿空留巷；围岩变形；柔模支护；支护优化；无损检测
中图分类号：TD353.6
文献标志码：A
文章编号：10030506(2018)09016505
Study on nondestructive testing and its evaluation on axial load of anchor boltin
gob-side retaining entry in soft-mold concrete supporting
Sha Xuan',Gong Chengxin2-3,Shi Hao2.3
(1. Shanxi Gaoke Energy Co. ,Lid. , Changzhi 047100, China; 2. China University of Mining and Technology, State Key Laboratory for Geomechanics & Deep Undergrotnd Engineering ,Xuzhou221000, China; 3. China Unitersity of Mining and Technology, School of Mechanics and Ciril Engineering ,Xuzhou221000, China)
Abstract: The axial force of bolts was measured by a kind of non-destructive testing technology, at the relative stable area in front of working face of gobside entry along the roadway and at the mining area behind the working face. Based on the measured results and the comparison analysis of axial force of anchor bolts,a non-symmetrical support scheme of flexible roadway along gob-side roadway was put fonrard. The monitoring of the axial bolt load and surrounding rock deformation of gob-side entry after the support optimization showed that the bolt iworking status was in good condition and the surrounding rock deformation was controlled effectively. The results showed that at the relatively stable area ahead of working face, as the working face advances, the force of single roof bolt and two rib bolts change litle; the axial force of bolts on the side of coal pillar was bigger than that of bolts on the solid coal side, The average axial force of bollard bolt was larger than the average axial foroe of the bolt in the back of the working face,and the average axial force of the two gangues increases with the propulsion distance of the working face approximately in the form of a straight line. Column gang influence more, The use of non-symmetrical support schemes for supporting along gob-side roadway of flexible membrane can effectively control the deformation of surrounding rock and save the cost of support and create good economic and social benefits
Keywords : gob-side entry retaining; deformation of surrounding rock ;soft-mold concrete supporting;support optimization; nondestructive testing
收稿日期：2018-04-08；责任编辑：刘欢欢
DOI:10. 19389/j. cnki, 1003 0506. 2018. 09, 034
基金项目：国家自然科学基金资助项目(51227003,51404262）
作者简介：沙旋（1984一），男，江苏徐州人，工程师，硕士，2006年率业于中国矿业大学，现从事果动岩体控制与巷道果掘技术科研管理工作。引用格式：沙旋，黄诚鑫，石浩.柔模支护沿空卷道惜杆轴力无损检测评价研究(J].能源与环保，2018，40(9)：165-169.
Sha Xuan, Gong Chengin,Shi Hao, Study on nondestretive testing and its evaluation on axial load of anehor bolt in gob-side retaining entry in soft-mold concrete supporting[ J]. China Energy and Environmental Proteetion,2018,40(9) :165-169.
· 165·
万方数据