极近距离煤层下位巷道变形机理及控制

采矿与安全工程学报 ›› 2016, Vol. 33 ›› Issue (1): 49-55.

极近距离煤层下位巷道变形机理及控制

1．徐州工程学院土木工程学院，江苏徐州 221111；2．中国矿业大学矿业工程学院，深部煤炭资源开采教育部重点实验室，江苏徐州 221116；3．中国矿业大学煤炭资源与安全开采国家重点实验室，江苏徐州 221116

收稿日期:2014-05-20 出版日期:2016-01-15 发布日期:2016-03-01
作者简介:于洋(1985—)，男，山东省新泰市人，博士，讲师，从事地下空间安全开发及灾害防治和巷道岩层控制理论与技术方面的研究。
基金资助:
国家自然科学基金项目(51204166)；江苏高校优势学科建设工程项目；中央高校基本科研业务费专项资金项目(2011QNB01)

Deformation mechanism and control of lower seam roadway of contiguous seams

Received:2014-05-20 Online:2016-01-15 Published:2016-03-01

摘要/Abstract

摘要： 为了解决极近距离煤层下位巷道围岩维护的难题，以山西蒲县北峪煤矿工程地质条件为背景，通过数值计算研究了极近距离上位煤层采空区下底板岩层的应力分布规律及下位煤层巷道变形破坏特征，确定了下位巷道顶板控制原则，并对不同顶板控制方式进行了现场测试；在此基础上，提出了基于水力膨胀锚杆全长锚固和顶板超前插管法的三维联合控顶技术，并依据力学计算和现场测试结果确定了关键参数。工业性试验表明，研究开发的控制技术对极近距离煤层下位巷道围岩的控制作用显著，巷道整体维护状况良好，给类似条件下的巷道围岩控制提供了有益的参考。

关键词: 极近距离煤层, 下位巷道, 水力膨胀锚杆, 三维联合控顶, 变形控制

Abstract: In order to solve the support problem of roadway locating in the lower seam of contiguous coal seams, this paper, taking Beiyu coalmine in Pu County, Shanxi Province as a case, has studied the stress field in the floor of gob belonging to upper seam and characteristics of deformation and instability for roadway locating in lower seam by means of numerical simulation. Principles of ground control for roadway roof in lower seam have been determined and different roof control methods have been tested in field. According to this research, three-dimensional combined roof control techniques based on hy- draulic expansion bolt and advancing insertion of tube on roof have been put forward with corre- sponding key parameters being determined through theoretical analysis and field test. Field test has suggested that control techniques raised in this paper are effective for the ground control of roadway in lower seam of contiguous coal seams and the general condition of roadway is good, which has provided great reference value for ground control of roadway in similar conditions.

Key words: contiguous seams, roadway in lower seam, hydraulic expansion bolt, three-dimensional combined control of roof, deformation control

于洋, 神文龙, 高, 杰. 极近距离煤层下位巷道变形机理及控制[J]. 采矿与安全工程学报, 2016, 33(1): 49-55.

YU YANG , SHEN Wen-Long, GAO JIE . Deformation mechanism and control of lower seam roadway of contiguous seams[J]. Journal of Mining & Safety Engineering, 2016, 33(1): 49-55.

[1]	黄庆享，贺雁鹏，罗利卜，曹健. 浅埋极近距离煤层采空区垮落顶板活化结构及支架阻力研究[J]. 采矿与安全工程学报, 2018, 35(3): 561-.
[2]	张明，姜福兴，王建超，胡兆峰，刘金亮. 超深井多煤层扰动下巷道变形的时空规律[J]. 采矿与安全工程学报, 2018, 35(2): 229-237.
[3]	郝育喜，王炯，袁越，王晓雷，朱国龙，何满潮. 沙吉海煤矿弱胶结膨胀性软岩巷道大变形控制对策[J]. 采矿与安全工程学报, 2016, 33(4): 684-691.
[4]	陈苏社，朱卫兵. 活鸡兔井极近距离煤层煤柱下双巷布置研究[J]. 采矿与安全工程学报, 2016, 33(3): 467-474.
[5]	张向阳, 常聚才. 上下采空极近距离煤层开采围岩应力及破坏特征研究[J]. 采矿与安全工程学报, 2014, 31(4): 506-511.
[6]	明建, 单强, 严荣富. 自然崩落法采场软破围岩巷道支护技术研究[J]. 采矿与安全工程学报, 2014, 31(1): 34-40.