基于并行电阻率法的导水裂隙带适时探测技术研究

煤层开采后上覆岩层破坏的最大导水裂隙带高度是合理留设防水煤柱、确保煤矿企业安全生产的重要参数。目前,常用的探测方法主要有冲洗液法、注水实验法、电阻率法、地震勘探法等。但是,上述方法由于数据采集速度和数据采集数量的限制,往往难以探测到导水裂隙带高度的最大值。将基于二极电阻率法的并行网络电法监测系统应用于导水裂隙带高度探测中,可以适时探测到导水裂隙带的发展过程,较准确地探测到其发展的最大高度。目前,该技术已广泛应用于矿井回采工作面导水裂隙带高度探测的工程实践中。

Research on Timely Prospecting Technology of Water Flowing Fracture Zone by Parallel Electrical Resistivity Method

After coal seam was dug,the maximum height of the water flowing fractured zone of overlying strata is important parameter of reasonable leaving coal pillar and ensuring coal mine enterprises' safe producing.Presently,conventional methods of prospecting height of the water flowing fractured zone are the method of drilling fluid consumption,the method of pouring water into borehole,resistivity method and seismic prospecting method.But,the above-mentioned methods can't prospect the maximum height of the water flowing fractured zone more often than not,because of the limitation of their data collecting rate and amount.In this paper,the parallel network monitoring system on pole-pole resistivity method is used in prospecting the height of the water flowing fractured zone.It can prospect the process of the development of the water flowing fractured zone at the opportune moment.For this reason,it can gain the maximum height of the water flowing fractured zone.Now,this method has been applied in many engineering projects of measuring the height of the water flowing fractured zone of working faces.