预抽瓦斯与深孔注水在动力灾害中的技术实践
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摘要
为了解决某矿121305工作面动力灾害频发这一问题,本文提出建立开采动力灾害区域预测预防体系,首先从瓦斯地质、掘进预测指标及工作面开采应力集中角度进行区域危险性预测,并结合工作面实际情况确定危险区域位置,然后对危险区域实施预抽瓦斯与深孔注水技术,最后对该技术的实际效果进行了分析。结果表明:对重点防范区域实施预抽瓦斯与深孔注水技术后,煤体的残余瓦斯含量降至3 m3/t以下,煤体含水量增量达到3%以上,使危险区域的动力现象得到缓解,成功的确保工作面安全、高效回采。
In order to solve the problem of dynamic disasters in 121305 working face of a coal mine. It is proposed that the establishment of mining dynamic disaster predicting system. At first,to predict the danger zone from the gas geology,tunneling prediction index and face mining stress concentration,combined with the actual situation to determine the risk area in working face,then the implementation of the gas pre- drainage and deep- hole water infusion technology to the risk area,at last,effect analysis on this technology. The results show that: after implementing this technique the residual gas content of coal body to below 3m3/ t,dynamic phenomena in hazardous area ease,it is success to ensure safe,efficient mining working face.
In order to solve the problem of dynamic disasters in 121305 working face of a coal mine. It is proposed that the establishment of mining dynamic disaster predicting system. At first,to predict the danger zone from the gas geology,tunneling prediction index and face mining stress concentration,combined with the actual situation to determine the risk area in working face,then the implementation of the gas pre- drainage and deep- hole water infusion technology to the risk area,at last,effect analysis on this technology. The results show that: after implementing this technique the residual gas content of coal body to below 3m3/ t,dynamic phenomena in hazardous area ease,it is success to ensure safe,efficient mining working face.
引文
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[10]何学秋,聂百胜,王恩元,等.矿井煤岩动力灾害电磁辐射预警技术.煤炭学报,2007,(01):58-62.
[2]王振,胡千庭,文光才,等.采动应力场分布特征及其对煤岩瓦斯动力灾害的控制作用分析[J].煤炭学报,2011,(04):623-627.
[3]俞启香.矿井瓦斯防治[M].徐州:中国矿业大学出版社,1993,(04):95-98.
[4]刘杰,王恩元,赵恩来,等.深部工作面采动应力场分布变化规律实测研究[J].采矿与安全工程学报,2014,(01):60-65.
[5]贾艳武,付巍.深部逆断层倾角对煤岩冲击失稳作用的数值模拟[J].煤矿安全,2015,(03):171-174.
[6]蒋金泉,武泉林,曲华.硬厚岩层下逆断层采动应力演化与断层活化特征[J].煤炭学报,2015,(02):267-277.
[7]李京濂,尚仕科,张君,等.统计地震学在矿山动力灾害预测中的应用[J].有色金属(矿山部分),2015,(01):7-10+24.
[8]闫宪磊,陈学华,闫宪洋.综放工作面过断层期间微震规律分析[J].煤炭学报,2011,S1:83-87.
[9]姜福兴,王平,冯增强,等.复合型厚煤层“震-冲”型动力灾害机理预测与控制.煤炭学报,2009,(12):06-09.
[10]何学秋,聂百胜,王恩元,等.矿井煤岩动力灾害电磁辐射预警技术.煤炭学报,2007,(01):58-62.
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