CO_2致裂技术在邻空巷道的应用
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摘要
通过对某矿5111巷产生大变形破坏的特征和原因分析,指出采空区悬梁形成的残余支承压力和坚硬顶板破断时动压影响是造成巷道大变形破坏的主要原因,并且应用了CO_2致裂技术对回采巷道坚硬顶板进行应力弱化。在不改变围岩支护强度的情况下,进行了工程试验,并且运用现场监测数据分析手段,验证了该技术在大采高放顶煤工作面,邻空巷道变形控制应用的可行性。
Based on the analysis of the characteristics and causes of the large deformation and failure of 5111 lane in certain mine, points out that the residual support pressure of cantilever beams formed in goaf and the dynamic pressure influence when hard roof is broken are the main causes of large deformation and failure of roadway, and the application of CO_2 cracking technology weakens the stress on hard roof of mining roadway. Without changing the strength of surrounding rock support, the engineering test was carried out and the feasibility of the application of deformation control of near goaf roadway to open-caving mining with big mining height was verified by field monitoring data analysis.
Based on the analysis of the characteristics and causes of the large deformation and failure of 5111 lane in certain mine, points out that the residual support pressure of cantilever beams formed in goaf and the dynamic pressure influence when hard roof is broken are the main causes of large deformation and failure of roadway, and the application of CO_2 cracking technology weakens the stress on hard roof of mining roadway. Without changing the strength of surrounding rock support, the engineering test was carried out and the feasibility of the application of deformation control of near goaf roadway to open-caving mining with big mining height was verified by field monitoring data analysis.
引文
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[3]高同伟,王海亮.静态爆破法在煤矿巷道扩建工程中的应用[J].爆破,2011,28(1):98-99,115.
[4]张春雷,张勇,李立,等.大倾角大采高综采工作面坚硬顶板控制技术[J].辽宁工程技术大学学报:自然科学版,2014,33(9):1 172-1 177.
[5]马书明,吕文玉,孙丙玉.深部采场矿山压力理论研究现状及趋势[J].煤炭工程,2010(10):87-89.
[6]刘占斌,马占国,杨党委.特厚煤层综放开采多次采动影响巷道围岩稳定性研究[J].煤炭工程,2017,49(5):40-43.
[7]刘正和,赵阳升,弓培林,等.大采高放顶煤工作面矿压显现规律及围岩控制研究[J].太原理工大学学报,2011,42(5):524-527.
[8]董庆祥,王兆丰,韩亚北,等.液态CO2相变致裂的TNT当量研究[J].中国安全科学学报,2014(11):84-88.
[9]黄园月,尹岚岚,倪昊,等.二氧化碳致裂器研制与应用[J].煤炭技术,2015,34(8):123-124.
[10]朱拴成,周海丰,李浩荡.二氧化碳炮处理综采工作面巷道三角区悬顶[J].煤矿安全,2013,44(8):144-146.
[11]贺超.基于二氧化碳深孔致裂增透技术的低透煤层瓦斯治理[J].煤炭科学技术,2017,45(6):67-72.
[12]王志亮,杨仁树,张跃兵.保护层开采效果测评指标及应用研究[J].中国安全科学学报,2011,21(10):58-63.