直流电阻率法超前探测技术研究与应用
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摘要
根据断层裂隙带地电特征建立地球物理模型,进行直流电阻率法超前探测数值模拟,分析了迎头前方存在隐伏构造时视电阻率响应特征,巷道空腔对小极距探测结果影响较大,但不会掩盖地质体异常响应,提出采用三点三极装置并绘制视电阻率等值线图的数据采集处理方式,有助于圈定异常体空间位置。
Geophysical model established based on the geoelectric characteristics of fault fractured zone, DC resistivity method advanced detection to carry on the numerical simulation, and analyzed the response characteristics of the apparent resistivity when roadway front ahead exist concealed structure.The results show that roadway cavity has a great influence on the detection results of small spacing of electrodes, but the anomaly response of geological body is not screened; it′ s helpful to delineate the spatial location of anomalous body by the data acquisition and processing method of the 3 points- 3poles and drawing the apparent resistivity contour map.
Geophysical model established based on the geoelectric characteristics of fault fractured zone, DC resistivity method advanced detection to carry on the numerical simulation, and analyzed the response characteristics of the apparent resistivity when roadway front ahead exist concealed structure.The results show that roadway cavity has a great influence on the detection results of small spacing of electrodes, but the anomaly response of geological body is not screened; it′ s helpful to delineate the spatial location of anomalous body by the data acquisition and processing method of the 3 points- 3poles and drawing the apparent resistivity contour map.
引文
[1]李冰.直流电法超前探测技术在含水断层构造探测中的应用[J].煤炭技术,2015,34(3):113-115.
[2]刘斌,李术才,李树忱,等.隧道含水构造电阻率法超前探测正演模拟与应用[J].吉林大学学报:地球科学版,2012,42(1):246-253.
[3]刘树才,刘鑫明,姜志海,等.煤层底板导水裂隙演化规律的电法探测研究[J].岩石力学与工程学报,2009,28(2):348-356.
[4]高致宏,闫述,王秀臣,等.巷道超前(电法)探测的应用现状与存在的问题[J].煤炭技术,2006,25(5):120-121.
[5]张卜文.矿井高密度电法探查工作面内构造[J].煤炭技术,2008,27(10):112-114.
[2]刘斌,李术才,李树忱,等.隧道含水构造电阻率法超前探测正演模拟与应用[J].吉林大学学报:地球科学版,2012,42(1):246-253.
[3]刘树才,刘鑫明,姜志海,等.煤层底板导水裂隙演化规律的电法探测研究[J].岩石力学与工程学报,2009,28(2):348-356.
[4]高致宏,闫述,王秀臣,等.巷道超前(电法)探测的应用现状与存在的问题[J].煤炭技术,2006,25(5):120-121.
[5]张卜文.矿井高密度电法探查工作面内构造[J].煤炭技术,2008,27(10):112-114.