Assessment on the antifouling property of karst ground water in Huaibei City

The antifouling property of karst ground water in Huaibei City is assessed by means of PI (protective layer and infiltration condition) method on the basis of deep study to regional hydrogeologic conditions, in order to protect and rationally exploit the karst ground water resources. The results show that the region with antifouling property value π that less than 2 locates in low mountains and hills, where is rock outcrop area with the bedrock buried within 50m in depth; that the value π between 2 to 3 mainly distributes in hills, residual hills and piedmonts, where are rock covered area with the bedrock buried in 50～200m; the value π that more than 4 locates in the plains is buried area with the bedrock buried deeper than 200m under the ground. Either the PI evaluation results or the geologic conditions of assessment object show that the antifouling property of the karst ground water in mountains and hills is week or relatively week and gets stronger with the distance away from the mountain, and the antifouling property is best in plain.