远距离重叠煤柱作用下的强矿压显现作用机制:以大同矿区多煤层开采为例

doi:10.16265/j.cnki.issn1003-3033.2017.03.015

摘要/Abstract

摘要： 为研究大同矿区特厚煤层采出空间大和远距离侏罗系煤层群重叠煤柱共同作用下的强矿压显现机制,采用通用离散元程序(UDEC)数值模拟方法,分析重叠煤柱作用下的工作面采动应力规律。应用高精度微震监测技术,得到侏罗系煤层群开采影响下的综放工作面覆岩运动与矿压显现的关系。研究表明,工作面回采至侏罗系煤柱对应区域时,工作面超前支承压力比在非煤柱区域提高了25%～33%;侏罗系煤柱重叠区域,在“煤柱-覆岩联动”和“煤柱-采动应力耦合”共同作用下,工作面矿压显现更为强烈;在临近采空区和侏罗系覆岩共同作用下,沿空巷道矿压显现强烈。工作面开采扰动、临近采空区覆岩运动和侏罗系重叠煤柱的耦合作用,是石炭系综放工作面矿压显现剧烈的根本原因。用提出的基于地面钻孔压裂重叠煤柱弱化的强矿压显现顶板控制技术,可削弱重叠煤柱对工作面开采的影响,减轻特厚煤层综放开采采场矿压的显现强度。

关键词: 重叠煤柱; 矿压显现; 覆岩结构; 微震监测; 特厚煤层

Abstract: The paper was aimed at studying the strong strata behavior mechanism for the Datong mining area by numerical simulation and field measurement. Mining stress was analyzed by means of Universal Distinct Element Code (UDEC) numerical simulation software for the mining face under the effect of overlapping pillars. Using high-precision microseismic monitoring methods, the relationship between overburden strata movement and strata behavior was studied . The results show that mining face abutment pressure in the region Jurassic pillars correspond is higher, than that in non-coal pillar region by 25%-33%,that in the Jurassic coal pillar overlap area, the strata behavior under the coupling effect of coal pillar-overburden linkage and coal pillar-mining stress is more intense,that under the combined action of mined-out area and Jurassic overlying strata, the ground pressure of gob-side entry is strong, and that the strong strata behavior of carboniferous mechanized mining caving face is induced by coupling action of mining disturbance, abutment pressure from mined-out area and Jurassic overlapping coal pillar. A technology was developed for controlling strong strata behavior.

Key words: overlapping coal pillar, strata behavior, overlying structure, microseismic monitoring, special thick seam

中图分类号:

X936

朱志洁, 张宏伟, 陈蓥, 霍丙杰, 汤国水. 远距离重叠煤柱作用下的强矿压显现作用机制:以大同矿区多煤层开采为例[J]. 中国安全科学学报, 2017, 27(3): 83-88.

ZHU Zhijie, ZHANG Hongwei, CHEN Ying, HUO Bingjie, TANG Guoshui. Strong strata behavior mechanism under long distance overlapping coal pillar: taking multiple coal seams mining of Datong mining area as an example[J]. China Safety Science Journal, 2017, 27(3): 83-88.

参考文献

[1] 鞠金峰,许家林,朱卫兵,等. 近距离煤层工作面出倾向煤柱动载矿压机制研究[J]. 煤炭学报,2010,35(1):15-20.
JU Jinfeng,XU Jialin,ZHU Weibing,et al. Mechanism of strong strata behaviors during the working face out of the upper dip coal pillar in contiguous seams[J]. Journal of China Coal Society,2010,35(1):15-20.
[2] 屠世浩,王方田,窦凤金,等. 上层煤柱下综放沿空回采巷道矿压规律研究[J]. 中国矿业大学学报,2010,39(1):1-5.
TU Shihao,WANG Fangtian,DOU Fengjin,et al. Fully mechanized top-coal caving:underground stress at gateways under barrier pillars of an upper coal seams[J]. Journal of China University of Mining and Technology,2010,39(1):1-5.
[3] 张百胜,杨双锁,康立勋,等. 极近距离煤层回采巷道合理位置确定方法探讨[J]. 岩石力学与工程学报, 2008 ,27(1):97-101.
ZHANG Baisheng,YANG Shuangsuo,KANG Lixun,et al. Discussion on method for determining reasonable position of roadway for ultra-close multi-seam[J]. Chinese Journal of Rock Mechanics and Engineering,2008,27(1):97-101.
[4] 白庆升,屠世浩,王方田,等.浅埋近距离房式煤柱下采动应力演化及致灾机制[J].岩石力学与工程学报,2012,31(增2):3 772-3 778.
BAI Qingsheng,TU Shihao,WANG Fangtian,et al.Stress evolution and induced accidents mechanism in shallow coal seam in proximity underlying the room mining residual pillars[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(S2):3 772-3 778.
[5] 陈苏社. 综采工作面过上层煤集中煤柱动载矿压控制技术[J]. 煤炭科学技术,2014,42(6):140-143.
CHEN Sushe. Dynamic mine strata pressure control technology of fully-mechanized coal mining face passing through concentrated coal pillars in above seam[J]. Coal Science and Technology,2014,42(6):140-143.
[6] 朱涛.极近距离煤层刀柱采空区下长壁开采矿山压力及其控制研究[D].太原:太原理工大学,2007.
ZHU Tao. Study on longwall mining pressure and control beneath the area mined with longwall-pillar method in ultra-close multiple-seams[D]. Taiyuan:Taiyuan University of Technology,2007.
[7] 郑百生,谢文兵,窦林名,等.不规则煤柱作用下工作面开采的三维数值模拟[J].煤炭学报,2006,31(2):137-140.
ZHENG Baisheng,XIE Wenbing,DOU Linming,et al.3D simulation on caving of face affected by irregular pillar[J].Journal of China Coal Society,2006,31(2):137-140.
[8] 王晓振,许家林,朱卫兵,等.走向煤柱对近距离煤层大采高综采面矿压影响[J].煤炭科学技术,2009,37(2): 1-4.
WANG Xiaozhen,XU Jialin,ZHU Weibing,et al. Strike coal pillar affected to strata pressure of fully mechanized longwall mining face with high cutting height in closed distance seam[J]. Coal Science and Technology,2009,37(2): 1-4.
[9] 于斌,刘长友,杨敬轩,等. 大同矿区双系煤层开采煤柱影响下的强矿压显现机理[J]. 煤炭学报,2014,39(1):40-46.
YU Bin, LIU Changyou, YANG Jingxuan, et al. Mechanism of strong pressure reveal under the influence of mining dual system of coal pillar in Datong mining area[J]. Journal of China Coal Society, 2014, 39(1):40-46.
[10] 孔令海,姜福兴,杨淑华,等.基于高精度微震监测的特厚煤层综放工作面顶板运动规律[J]. 北京科技大学学报,2010,32(5):552-558.
KONG Linghai,JIANG Fuxing,YANG Shuhua,et al. Movement of roof strata in extra thick coal seams in caving mining based on high precision micro-seismic monitoring system[J]. Journal of University of Science and Technology Beijing,2010,32(5):552-558.
[11] 赵扬锋,张超,刘力强,等. 循环载荷作用下岩石多参量特征规律研究[J]. 中国安全科学学报, 2016, 26(5): 105-111.
ZHAO Yangfeng, ZHANG Chao, LIU Liqiang, et al. Experimental research on multi-parameter rules of rock under cyclic loading[J]. China Safety Science Journal, 2016, 26(5):105-111.
[12] 陈学华,吕鹏飞,宋卫华,等. 综放开采过断层冲击地压危险分析及防治技术[J]. 中国安全科学学报, 2016, 26(5):81-87.
CHEN Xuehua, LYU Pengfei,SONG Weihua,et al. Analysis and control technology of danger of rock burst when fully mechanized caving passing through fault [J]. China Safety Science Journal,2016,26(5):81-87.
[13] 刘超,李树刚,王红胜,等. 基于ESG微震监测系统的矿井动力灾害救援试验研究[J]. 中国安全科学学报, 2013, 23(3): 125-129.
LIU Chao,LI Shugang,WANG Hongsheng, et al. Experimental study on mine dynamic disaster rescue based on ESG microseismic monitoring system[J]. China Safety Science Journal, 2013, 23(3): 125-129.

[1]	李刚, 刘海振, 杨庆贺, 牛伟锋. 带压开采煤层底板破坏特征与突水风险分析[J]. 中国安全科学学报, 2022, 32(5): 68-76.
[2]	曾纪涵, 章光, 吴浩, 胡少华. 改进POT模型下尾矿坝综合预警值确定方法[J]. 中国安全科学学报, 2022, 32(5): 134-139.
[3]	王来贵, 赵国超, 刘向峰, 赵娜, 李喜林. 微凸体形状对砂岩节理摩擦因数的影响研究[J]. 中国安全科学学报, 2022, 32(4): 36-43.
[4]	洪林, 王文静, 高大猛, 郭英超, 马鸿海. 低温氮吸附中煤阶对临界填充孔径的影响[J]. 中国安全科学学报, 2022, 32(4): 51-58.
[5]	成连华, 郭阿娟, 郭慧敏, 曹东强. 煤矿瓦斯爆炸风险耦合演化路径研究[J]. 中国安全科学学报, 2022, 32(4): 59-64.
[6]	金洪松, 易富, 戚旭鹏, 于汇泽, 杜常博, 于犇. 加筋尾矿稳定性及界面剪切模型[J]. 中国安全科学学报, 2022, 32(4): 86-92.
[7]	姜延航, 白刚, 周西华, 王思琪, 王连华, 范超军. 煤层注CO₂驱替CH₄影响因素试验研究[J]. 中国安全科学学报, 2022, 32(4): 113-121.
[8]	吴学海, 李波波, 高政, 许江, 付佳乐. 气体压力降低对煤岩变形和渗流的影响机制[J]. 中国安全科学学报, 2022, 32(4): 129-134.
[9]	朱权洁, 张震, 梁娟, 刘晓辉, 谷雷, 钟磊磊. 一种矿山三维井巷模型快速生成方法及其应用[J]. 中国安全科学学报, 2022, 32(3): 48-57.
[10]	赵文彬, 刘方顺, 石新岩, 刘辉, 王忠密, 李振武. 放顶煤工作面立体自燃带动态变化特性研究[J]. 中国安全科学学报, 2022, 32(3): 65-74.
[11]	董建军, 杨嫡, 闫斌, 梅媛. 剧烈干湿交替下高海拔排土场安全稳定性研究[J]. 中国安全科学学报, 2022, 32(3): 75-83.
[12]	周兢, 刘永升, 豆子钧, 阴慧胜, 张彪, 陈国强. 矿山巷道救援生命保障孔轨迹设计与控制方法[J]. 中国安全科学学报, 2022, 32(3): 84-89.
[13]	冯巩, 夏元友, 王智德, 严敏嘉. 基于位移信息融合的露天矿边坡动态预警方法[J]. 中国安全科学学报, 2022, 32(3): 116-122.
[14]	马兴莹, 王兆丰, 尉瑞, 周晓庆, 李乾荣. 低温环境瓦斯扩散试验及不同模型契合度分析[J]. 中国安全科学学报, 2022, 32(3): 123-130.
[15]	熊钰, 孔德中, 杨胜利, 吴桂义, 左宇军, 程占博. 大倾角工作面煤壁稳定性的云模型综合辨识[J]. 中国安全科学学报, 2022, 32(3): 144-151.