爆破扰动松软煤层对巷道围岩稳定性的影响

摘要
图/表
参考文献(22)
相关文章 (0)

全文: PDF (2720 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要随着煤矿采掘深度的增加，爆破技术在煤矿井下的应用越来越广泛，但因爆破扰动松软煤层诱发的煤与瓦斯突出事故也不容忽视。为研究爆破扰动松软煤层的力学特征以及爆破震动效应对巷道围岩稳定性的影响，以巷道掘进爆破扰动松软煤层诱发煤与瓦斯突出为工程背景，根据相似理论在实验室搭建了爆破模拟试验系统，通过超动态应变仪监测爆破载荷作用下试样的力学特性，结合理论分析和数值模拟探讨爆破对巷道稳定性的影响。研究发现，当爆破孔从岩层进入松软煤层，在本试验条件下产生了类似突出的破碎抛掷过程；爆破裂纹扩展是导致巷道围岩破坏的根本原因，而松软煤层的存在会加剧巷道围岩的破坏程度，促使巷道围岩的裂隙进一步扩展发育，在煤矿井下一次爆破装药量大，炮孔数目多和需要多次爆破的情况下，爆破振动的累积损伤会最终影响到巷道的稳定。研究成果对揭示井下爆破扰动构造带煤岩诱导煤与瓦斯突出的发生机理具有重要的理论价值。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	高魁1
	2
	刘泽功1
	2
	刘健1
	2
	朱飞昊1

关键词 ：爆破掘进, 爆破应力波, 地质构造带, 松软煤层, 煤与瓦斯突出

Abstract：

The application of blasting technology is more and more widely with increase in mining depth in coal mines, but coal and gas outburst accidents caused by blasting in soft coal seams can’t be ignored. In order to study mechanical characteristics of blast disturbing soft coal seams and effects of blasting vibration on stability of roadway surrounding rock, taking coal and gas outburst induced by blast disturbing soft coal seams in roadway excavation as engineering background, a blasting simulation test system was set up in a laboratory according to the similarity theory. The mechanical features of samples were monitored with an ultra-dynamic strain gauge, and effects of blasting on roadway stability were explored with theoretical analysis and numerical simulation. It was shown that when a blasting hole from rock layer enters soft coal seam, a crushing and throwing process similar to outburst is produced under the existing test conditions; blasting crack propagation is the essential cause of roadway surrounding rock failure, and the existence of soft coal seam aggravates damage level of roadway surrounding rock to make cracks of roadway surrounding rock further expand and develop; under the condition of next blasting with a large charge, many holes and multi-blast in a coal mine, the cumulative damage of blasting vibration ultimately affects the roadway stability. The study achievements have important theoretical values to reveal the mechanism of coal and gas outburst induced by blast disturbing tectonic zone coal rock.

Key words： blasting driving explosive stress wave geological structural belt soft coal seam coal and gas outburst

收稿日期: 2017-10-13 出版日期: 2018-07-28

引用本文:

高魁1，2，刘泽功1，2，刘健1，2，朱飞昊1. 爆破扰动松软煤层对巷道围岩稳定性的影响[J]. 振动与冲击, 2018, 37(15): 136-142.
GAO Kui1,2, LIU Zegong1,2, LIU Jian1,2, ZHU Feihao1. Effects of blast disturbing soft coal seam on stability of roadway surrounding rock. JOURNAL OF VIBRATION AND SHOCK, 2018, 37(15): 136-142.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2018/V37/I15/136

[1] 龚敏，张凤舞，文斌，等.煤巷底板岩石爆破提高瓦斯抽放率的应用与数值模拟[J]. 煤炭学报，2012，37(6)：972–977.
GONG Min, ZHANG Fengwu, WEN Bin, et al. Numerical simulation and application on blasting to improve gas drainage rate in floor rock of coal roadway[J]. Journal of China Coal Society,2012, 37(6):972–977.
[2] 余永强，杨小林，梁为民，等.控制爆破致裂提高矿井瓦斯抽放率试验研究[J]. 煤炭学报，2007，32(4)：377-381.
YU Yongqiang, YANG Xiaolin, LIANG Weimin, et al. Testing research of improving mine gas drainage under suction by controlling blasting to cause crack[J]. Journal of China Coal Society,2007,32(4):377-381.
[3] 穆朝民，王海露，黄文尧，等高瓦斯低透气性煤体定向聚能爆破增透机制[J]. 岩土力学，2013，34(9)：2 496–2 500.
MU Chao-min, WANG Hai-lu, HUANG Wen-yao, et al. Increasing permeability mechanism using directional cumulative blasting in coal seams with high concentration of gas and low permeability[J]. Rock and Soil Mechanics,2013,34(9):2 496–2 500.
[4] 张　超，林柏泉，周　延，等.控制爆破致裂提高矿井瓦斯抽放率试验研究[J].煤炭学报，2014，39supp( 1) : 100–104．
ZHANG Chao, LIN Baiquan, ZHOU Yan, et al. Application of multi-seam metal jet directed pre-split blasting technology in gas extraction[J]. Journal of China Coal Society,2014,39supp(1) : 100-104.
[5] 高魁，刘泽功，刘健，等.深孔爆破在深井坚硬复合顶板沿空留巷强制放顶中的应用[J]. 岩石力学与工程学报，2013，32(8)：1 588–1 594.
GAO Kui, LIU Zegong, LIU Jian, et al. Study on application of deep borehole blasting to gob-side entry retaining forced roof caving in hard and compound roof deep well[J]. Chinese Journal of Rock Mechanics and Engineering,2013,32(8):1 588–1 594.
[6] 郭德勇，商登莹，吕鹏飞，等.深孔聚能爆破坚硬顶板弱化试验研究[J]. 煤炭学报，2013，38(7)：1 149–1 153.
GUO Deyong, SHANG Dengying, LU Pengfei, et al. Experimental research of deep-hole cumulative blasting in hard roof weakening[J]. Journal of China Coal Society,2013,38(7):1 149–1 153.
[7] 刘健，刘泽功，高魁，姜二龙.深孔爆破在综放开采坚硬顶煤预先弱化和瓦斯抽采中的应用[J].岩石力学与工程学报，2014，33supp(1):3361-3367.
LIU Jian, LIU Zegong, GAO Kui, et al. Application of deep borehole blasting to top-coal pre-weakening and gas extraction in fully mechanized caving[J]. Chinese Journal of Rock Mechanics and Engineering, 2014,33supp(1):3361-3367.
[8] 刘健，刘泽功，石必明.低透气性突出煤层巷道快速掘进的试验研究[J].煤炭学报，2007，32 (8):827 -831.
LIU Jian, LIU Zegong, SHI Biming. Study on the roadway excavation rapidly in the low permeability outburst coal seam[J]. Journal of China Coal Society, 2007, 32 (8):827 -831.
[9] 汪海波，徐轩，宗琦，等．综掘硬岩段深孔超前爆破研究与应用[J]．煤炭学报，2017，42( 4) : 908－915．
Wang Haibo, Xu Xuan, Zong Qi, et al．Research and application of hard rock deep-hole advance blasting in comprehensive roadway excavation[J]．Journal of China Coal Society,2017, 42( 4) : 908-915．.
[10] 张春华，刘泽功，徐涛，等．石门对掘揭开急倾斜煤层突出与爆破增透消突技术[J].煤炭学报，2010，35 (1):85-88.
ZHANG Chunhua, LIU Zegong, XU Tao, et al. Coal and gas outburst in steep inclined coal seam uncovered by two reverse drifts and technology of outburst elimination by increasing permeability with blasting[J]. Journal of China Coal Society, 2010,35(1):85-88.
[11] 国家安全生产监督管理总局和国家煤矿安全监察局网站事故查调查处理[EB /OL]．
http://www.chinasafety.gov.cn/newpage/zwgk/tdsgdccl/zwgk_tdsgdccl_lm.htm,2015-08-15．
[12] 陈建平，高文学，陶连金. 爆破工程地质控制论[J].工程地质学报，2006，14(5)：616-619.
CHEN Jianping , GAO Wenxue , TAO Lianjin. Theory of rock blasting control in geology engineering[J]. Journal of Engineering Geology, 2006,14(5):616-619.
[13] 穆朝民，齐娟. 爆炸荷载作用下煤体裂纹扩展机理模型实验研究[J]. 振动与冲击，2012,31(13):58-61.
MU Chaomin, QI Juan. Model investigation on cracks propagation in coal under blast loading[J]. Journal of vibration and shock, 2012, 31(13):58-61.
[14] 岳中文，胡庆文，陈彪. 爆生裂纹与层理缺陷相互作用的实验研究[J]. 振动与冲击，2017, 36(12): 99-104.
YUE Zhongwen, HU Qingwen, CHEN Biao. An experimental study of the interaction between the blast-induced crack and the bedding defect[J]. Journal of vibration and shock, 2017, 36(12): 99-104.
[15] 郭东明，刘康，杨仁树，等.爆炸冲击荷载下相邻巷道裂隙扩展机理模拟试验[J]. 振动与冲击，2016, 35(2): 178-183.
GUO Dong-ming, LIU Kang, YANG Ren-shu, et al. Simulation experiments on the mechanism of adjacent tunnel crack extension induced by explosion load[J]. Journal of vibration and shock, 2016, 35(2): 178-183.
[16] 汪海波，宗琦.煤矿软岩巷道掘进爆破振动特性研究[J]. 岩石力学与工程学报，2012，31(增2)：3876-3881.
WANG Haibo, ZONG Qi. Study of blasting vibration character soft rock roadway excavation in coalmine[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(Supp.2):3 876–3 881.
[17] 孙惠香，胡平，梁丽娜，等. 爆炸作用下围岩稳定性样条小波三维数值模拟[J]. 振动与冲击，2016, 35(19): 26-30.
SUN Huixiang, HU Ping, LIANG Lina, et al. Spline wavelet 3D numerical simulation for adjoining rock stability under explosion[J]. Journal of vibration and shock, 2016, 35(19): 26-30.
[18] 高魁，刘泽功，刘健，等.构造软煤的物理力学特性及其对煤与瓦斯突出的影响[J].中国安全科学学报，2013，23(2)：129-133.
GAO Kui, LIU Zegong, LIU Jian, et al. Physical and mechanical characteristics of tectonic soft coal and their effects on coal and gas outburst[J]. China Safety Science Journal, 2013, 23(2): 129–133.
[19] 高魁，刘泽功，刘健.瓦斯在石门揭构造软煤诱发煤与瓦斯突出中的作用[J].中国安全科学学报，2015，25(3)：102-107.
GAO Kui, LIU Zegong, LIU Jian. Effect of gas on coal and gas outburst induced by rock cross-cut tectonic soft coal uncovering[J].China Safety Science Journal, 2015, 25(3):102–107.
[20] 常未斌，樊少武，张　浪，等.基于爆炸应力波和构造煤带孕育煤与瓦斯突出危险状态的模型[J]. 煤炭学报,2014,39(11):2226-2231.
Chang Weibin, Fan Shaowu, Zhang Lang, et al. A model based on explosive stress wave and tectonic coal zone which gestate dangerous state of coal and gas outburst[J]. Journal of China Coal Society, 2014, 39(11):2 226–2 231.
[21] 唐红梅，周云涛，廖云平. 地下工程施工爆破围岩损伤分区研究[J]. 振动与冲击，2015, 34(23): 202-206.
TANG Hongmei，ZHOU Yuntao，LIAO Yunping. Damage zone of surrounding rock of underground engineering under construction blasting[J]. Journal of vibration and shock, 2015, 34(23):202-206.
[22] 陈建平，高文学，张钦喜.爆破工程地质灾害及其防治[J]. 中国地质灾害与防治学报，2005，16(3)：94-99.
CHEN Jianping , GAO Wenxue, ZHANG Qinxi. The geological hazard of blasting engineering and its prevention[J]. The Chinese Journal of Geological Hazard and Control, 2005,16(3):94-99.