高密度电阻率法在果香峪溶洞勘查中的应用效果分析

地下岩溶的发育影响着地面基础工程的安全使用,所以,我们要对岩溶地区发育特征进行全面的了解,以采取相应的措施保证该地区地面建筑的安全。溶洞的空间赋存状态一般是不规则的三维地质体,它的发育与地下水系及该地区的地质构造有紧密联系,造成溶洞的洞室可能含有高阻或低阻填充物,导致溶洞与围岩之间存在物性差异。高密度电阻率法正是利用物...

Analysis on Application Effect of High Density Resistivity Method to Guoxiangyu Solution Cavity Exploration

Foundation work will be influenced by the existence of solution cavities underground,which should be uncovered,and so that we can take effective measures to ensure the safety of surface buildings.Usually the occurrence of solution cavity is an irregular 3D geological body,and its development is closely related with the geologic structures and ground water as a low-resistivity substance,which may fill in the cavern result in the difference of physical property between solution cavity and adjacent rock with high-resistivity.So,based on this difference,we can prospect for solution cavities in karst terrain with the high-density resistivity method.Currently,with the 2D high-density resistivity method,the feedback of profiles on the apparent resistivity is uncertain resulted from lateral-effect;because of the inefficiency and the short depth of prospecting,3D high-density resistivity method can’t identify the characters of solution cavity clearly.So,in this paper,taking a study of solution cavity exploration in Guoxiangyu for example,basing on generally introducing high-density resistivity method,we will expatiate the application of the horizontal slice figure method in interpreting data and the effects of this method.The method is that the data from traditional 2D high-density resistivity are processed by horizontal slice figure in order to achieve the purpose of 3D interpretation.