海量拟震法三极数据探测采煤裂隙带高度

为了摆脱井下巷道数据采集的时空限制,准确高效地探测出采煤裂隙带的发育高度,模拟地震勘探时的数据采集方式,即:单个电极供电时一系列电极同时进行测量,从而获得的视电阻率数据量相对于高密度电法来说是随着所布电极数量的增加而成二次抛物线增长。在淮南某矿井工作面的上方孔中布置了64根观测电极及2根无穷远电极,从而获得的电法数据量是高密度电法的1000多倍。通过对所采拟震法三极视电阻率数据的分析与对比,结合该矿的具体地质情况,认为拟震法三极视电阻率数据清晰地反映了工作面采煤裂隙带的发育高度。拟震法三极视电阻率凭借其海量的数据为准确有效地探测采煤裂隙带高度提供了坚实的保证。

Overwhelming amount of simulated seismic pole-dipole data for probing the depth of a mining fractured zone

In order to relieve the restrict of time and space,simulated seismic pole-dipole data are used to probe the exact depth of a mining fractured zone.64 measurement electrodes and 2 infinite electrodes were placed in an upper hole at the same time at a mine in Huainan.Simulated seismic pole-dipole data increase like a parabola as the electrodes are added,at least 1000 times data are obtained compared with the high density electrical prospecting.Data analyzed under the certain geological conditions show the cle...