一种加大探测深度的高密度电法测量装置及应用

On High-density Resistivity System in the Investigation of Deeper Structure

高密度电法因其所具有的一次布极可进行多种装置测量并获得丰富的地电信息,因此在水、工、环地质等方面得到广泛应用。然而,受仪器装备本身的限制,其探测深度常常难以达到工程建设的需求;同时,部分工程建设的场地范围有限,也限制了高密度电法的应用。因此,如何选择测量装置以加大探测深度和适应工作场地条件就是一个急待解决的问题。在高密度电法多种测量装置中,单边三极连续滚动式测深装置的探测深度是最大的,而且特别适应在单边难以跑极的工区工作。本文通过在马圈子工区进行采空区探测的实例及使用高密度电法资料圈定采空区的工程钻探验证结果,论述了高密度电法三极连续滚动式测深装置的有效性。

High--density resistivity method has been widely used in the fields of hydrological, engineering and environmental geology, for their advantages of flexible array deploys and rich information. It is, however, that the detection depth is limited due to the performance and principle of the system, hardly meeting the requirements of engineering construction. Meanwhile, some sites are usually small, which also limit the system application. So to select multi electrode system to.deepen detection is a critical problem to be solved. This paper discusses the availability of using three pole continuous sounding system by the case study and analysis in an exhausted mine, and gets the result from verification of drilling based on the high--density resistivity data.