In the Huainan mining area, the floor limestone water of coal group A is the main potential safety hazard threatening coal pro-duction. Thus, to prove up and drain floor limestone water with accuracy has guiding significance to coal safe working in the area. Through mining area previous geological exploration data analysis, on the basis of the typical Panji No.2 coalmine section linking bore-holes V east 02 and C3-III modeled a three-layered numerical model to simulate floor aquiferous abnormal bodies in the area. Under the condition of device type and line polar moment changes, using two electrical parameters of resistivity and polarizability carried out numerical simulation study. The result has shown that when depth of abnormal body relatively deep or number of electrode is limited, tri-electrode arrangement is preferred. Using small electrode spacing can improve vertical resolution effectively. Responsibility of po-larizability on abnormal body is weaker than resistivity. Moreover, to improve research level, indoor project site model established and carried out experiment with the Wenner tri-electrode arrangement, the result has shown that relation between the sizes of apparent re-sistivity and polarizability and water yield is rather obvious, the method is an aid to the assessment of floor limestone water.%在淮南矿区，A组煤底板灰岩水一直是威胁煤炭生产的主要安全隐患，因此准确探、放底板灰岩水对该区煤矿安全生产具有重要指导意义。通过分析淮南矿区前期地质勘查资料，以潘二矿V东02孔和C3-Ⅲ孔典型剖面为依据建立了三层状数值模型，模拟该区底板含水异常体。在改变装置类型及测线极距条件下，利用电阻率及极化率两个电性参数进行数值模拟研究。数值模拟结果表明：异常体深度相对较深或电极数量有限时，优先选用三极装置；采用小电极距可以有效提高垂直分辨率；极化率对异常体响应程度弱于电阻率。同时为提高研究程度，建立了室内工程场地模型，并选择温纳三极装置进行实验，结果表明，视电阻率和视极化率的大小与水量的关系比较明显，该方法有助于对底板灰岩水的评价。
展开▼
