矿井采空区积水网络并行电法探测技术
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摘要
随着煤矿开采深度的增加,采空区积水成为影响煤炭安全生产的重大隐患,其积水区边界的划定是有效防治采空区突水的关键。在建立采空区积水区边界模型基础上,运用网络并行电法探测技术对7130工作面采空区放水前及放水过程进行连续动态监测,获取含水异常体与渗流场、地电场之间的响应特征,以此建立积水区边界与视电阻率之间变化关系,可圈定矿井采空区积水范围。结果表明:有效富水系数为0.1226的积水区边界与网络并行电法探测技术测量得到的电阻率参数所划定的积水区边界具有很好的一致性,且可在动态监测中形成不同时段的电阻率剖面。
With the mining depth increased in the mine,the water ponding in the mining goaf would be major hidden danger affected to the mine coal safety production and the delineation of the water ponding boundary would be the key to effectively prevent and control the water inrush from the goaf.Based on establishment on the boundary model of water ponding,the network parallel electric method was applied to the continued dynamic monitoring and measuring the goaf in mining face No7130 before the water drainage and during the water drainage process.Response features of water bearing anomalous body between the seepage field and the geoelectric field were obtained and were applied to establish the variation relationship between the water ponding boundary and the resistivity in order to delineate and analyze the water ponding scope in the goaf of the mine.The results showed that the water ponding boundary with an effective watery coefficient of 0.122 6 and the water ponding boundary delineated with resistivity parameters measured by the network parallel electric method would have a good consistency and would format the resistivity section at different stage during the dynamic monitoring and measuring.
With the mining depth increased in the mine,the water ponding in the mining goaf would be major hidden danger affected to the mine coal safety production and the delineation of the water ponding boundary would be the key to effectively prevent and control the water inrush from the goaf.Based on establishment on the boundary model of water ponding,the network parallel electric method was applied to the continued dynamic monitoring and measuring the goaf in mining face No7130 before the water drainage and during the water drainage process.Response features of water bearing anomalous body between the seepage field and the geoelectric field were obtained and were applied to establish the variation relationship between the water ponding boundary and the resistivity in order to delineate and analyze the water ponding scope in the goaf of the mine.The results showed that the water ponding boundary with an effective watery coefficient of 0.122 6 and the water ponding boundary delineated with resistivity parameters measured by the network parallel electric method would have a good consistency and would format the resistivity section at different stage during the dynamic monitoring and measuring.
引文
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[8]刘盛东,吴荣新,胡水根,等.网络分布式并行电法勘探系统[C]//中国地球物理.22届年会论文集.成都:四川科学技术出版社,2006:251-258.
[9]吴荣新,张平松,刘盛东.双巷网络并行电法探测工作面内薄煤区范围[J].岩石力学与工程学报,2009,28(9):1834-1838.
[10]郑晓亮,刘盛东.基于双处理器的并行采集网络电法仪器的设计[J].煤炭科学技术,2008,36(4):85-88.
[11]刘盛东,张平松.分布式并行智能电极电位差信号采集方法:中国,200410014020.0[P].2006-07-26.
[2]章志洁,韩宝平,张月华,等.水文地质学基础[M].徐州:中国矿业大学出版社,1995:89-93.
[3]张云琳.大地电场临震突变异常形态的初步研究[J].西北地震学报,1980,2(4):50-54.
[4]左恒,吴爱祥,王贻明,等.地电场对裂隙岩块中溶浸液渗流特性影响的研究[J].岩石力学与工程学报,2007,26(5):972-976.
[5]刘盛东,王勃,周冠群,等.基于地下水渗流中地电场响应的矿井水害预警试验研究[J].岩石力学与工程学报,2009,28(2):267-272.
[6]王宏图,李晓红,鲜学福,等.地电场作用下煤中甲烷气体渗流性质的实验研究[J].岩石力学与工程学报,2004,23(2):303-305.
[7]王宏图,杜云贵,鲜学福,等.地球物理场中煤层瓦斯渗流方程[J].岩石力学与工程学报,2002,21(5):644-646.
[8]刘盛东,吴荣新,胡水根,等.网络分布式并行电法勘探系统[C]//中国地球物理.22届年会论文集.成都:四川科学技术出版社,2006:251-258.
[9]吴荣新,张平松,刘盛东.双巷网络并行电法探测工作面内薄煤区范围[J].岩石力学与工程学报,2009,28(9):1834-1838.
[10]郑晓亮,刘盛东.基于双处理器的并行采集网络电法仪器的设计[J].煤炭科学技术,2008,36(4):85-88.
[11]刘盛东,张平松.分布式并行智能电极电位差信号采集方法:中国,200410014020.0[P].2006-07-26.
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