音频电穿透在煤矿防治水中的应用

Application of audio frequency electric penetration in water prevention and control of coal mine

音频电穿透探测方法作为煤矿物探的一个重要手段,可以通过在回采工作面建立全空间低频电场,再结合矿井地质条件,推断出工作面顶底板一定深度范围内含水地质体的空间连通形态、相对富水区域的分布范围,为防治水设计和作业提供可靠依据。通过对锦界煤矿31115采煤工作面进行音频电穿透探测,对该采煤工作面顶板0~100 m范围内岩层的电性变化特征进行分析,推断出锦界煤矿31115采煤工作面导、含水构造的分布特征,并通过后期钻探相验证,表明矿井音频电穿透探测方法对于推断采煤工作面导、含水构造的分布特征具有显著的优势。

As an important means of coal mine geophysical exploration,audio frequency electric penetration detection method can be used to establish a full space low-frequency electric field in the working face,and then combined with the geological conditions of the coal mine,infer the spatial connection form of the water body in a certain depth range of the working face roof and floor,and the distribution range of the relative water rich area,so as to provide a reliable basis for the design and operation of water prevention.Through the audio frequency electric penetration detection of the 31115 working face in Jinjie Coal Mine,the electrical characteristics of the strata within 0~100 m range of the roof of the working face are analyzed,and the distribution characteristics of the water conduction and water bearing structure of the 31115 working face in Jinjie Coal Mine are inferred based on this.And through the verification of the later drilling,it is shown that the audio frequency electric penetration detection method of the coal mine have obvious advantages for the inference of the distribution characteristics of water conduction and water bearing structure of the working face.