【作者】 冷胜友； 闫述；

【Author】 LENG Sheng-you, YAN Shu (Xi’an Branch, CCRI, Xi’an 110054, China)

【机构】 煤炭科学研究总院西安分院；

【摘要】 在煤田水文地质勘探中,TEM法观测时窗的选择对取得好的探测效果关系极大:对包括有陷落柱、含煤地层、构造的导、含水性的地质任务来讲,应采用较长的观测时窗,这样有基岩、奥灰界面参与益于解释深度的控制;对单纯的已知陷落柱含水性探测,可采用较短的观测时窗,在保证探测效果的前提下降低施工成本;用大回线一中心探头装置,观测不能超过其中心的三分之一,而且在观测区域的边缘,根据情况要做一些校正工作。更多还原

【Abstract】 Selection of TEM observation time window for coalfield hydro - geological exploration is the key work concerning the effect of prospecting result deeply. For geologic task including Karst collapse column, coal bearing strata, and structure conductive and hydrous property, the longer observation time window should be adopted, with that the interfaces of bedrock and Ordovician lime stone could be jointed to determine the interpretation depth. However, for detecting hydrous property for know Karst collapse column, the short observation time window could be used to reduce the construction cost. As for large loop-central coil, observation cannot exceed one third of transmitting loop area, and some correction will be done according to the situation at the edge.更多还原