煤层回采过程中受到多种水体的威胁，其中承压水体对上覆煤层开采的威胁具有影响范围广、威胁大的特点，几乎所有的煤矿淹井事故都是由这类水害引起的。为了提前查清工作面承压水体分布情况，本文以冀中股份公司东庞矿西庞井9303工作面为例，采用音频电透视和电测深2种地球物理探测方法，在两巷对回采工作面底板承压水体进行探测，通过分析视电阻率及电导率等值线分布情况，确定承压水体在工作面底板下的空间位置及分布情况。结果表明，综合应用音频电透视和电测深2种探测方法，减少误报、漏报现象，提高了探测精确度，在探测工作面承压水体方面有着良好应用效果。

In the process of coal seam mining, it was threatened by a variety of water bodies. Among them, the threat of confined water to overlying coal seam mining had the characteristics of wide influence range and great threat. Almost all coal mine flooding accidents were caused by this kind of water damage. In order to find out the distribution of confined water in the working face in advance, this paper took No.9303 Face of Xipang well in Dongpang Mine of Jizhong Co., Ltd. as an example, and used two geophysical detection methods of audio electrical perspective and electric depth-measurement to detect the confined water in the floor of the working face in two roadways. By analyzing the distribution of apparent resistivity and conductivity contour line, the spatial position and distribution of confined water under the floor of the working face were determined. The results showed that the comprehensive application of the two detection methods of audio frequency electric perspective and electric depth-measurement could reduce the phenomenon of false positives and omissions, improve the detection accuracy, which had a good application effect in the detection of confined water in the working face.