小范围群井与单井抽水试验推求水文地质参数的比较分析

小范围岩溶区水文地质参数的推求是一项困难的工作.过去常常定性选取抽水孔与观测孔,利用单井抽水试验资料进行推求,这样往往造成推求误差过大.该文通过建立多层次多目标系统模糊决策模型,分别定量的优选了干扰井群抽水试验的最佳观测孔和单井抽水试验的最佳抽水试验单井;并运用了井群概化的方法,采用干扰井群抽水试验资料推求小范围水文地质参数,并且与单井抽水 试验资料推求的参数进行了比较分析,经分析应用方法取得了较好的效果.

COMPARATIVE ANALYSIS OF DETERMINING HYDROGEOLOGICAL PARAMETERS BY BETWEEN MULTIPLE WELL AND SINGLE WELL PUMPING TESTIN SMALL AREA

Determining Hydrogeological Parameters in small Karst area is a difficult problem. Originally, choosing the observation well and the pumping well qualitatively were used to determine Hydrogeologieal Parameters by the data of pumping test of single wells, which would result in the high error. The article establishes a fuzzy decision pattern of multilayer and multi - objective system, and chooses the optimal observation well in the pumping test of disturbed wells and the optimal pumping well in the pumping test of single wells by this system quantitatively. Also using multiple well generalized method, the article determined hydrogeological parameters based on the data of pumping test of disturbed wells, and makes up comparative analysis with the resuits which is got by the pumping test of single wells. It is found that perfect effects are attached.