井损对水文地质参数计算的影响

通过分析抽水试验过程中井损产生的原因及确定方法,运用水位动态变化过程中的井损计算方法,对乌兰陶勒盖水源地WL6号孔的抽水试验资料的井损计算程序进行了说明,并提出了该水源地理想降深与实际降深的经验公式。利用Aqui Test软件,分别计算了忽略井损和考虑井损两种情况下潜水(承压水)抽水井渗透系数及给水度(贮水率),从计算结果来看,计算井损、修正降深所得的各参数的值要比不考虑井损的值大;井损对潜水的抽水试验资料的影响要比承压水的大。

Well Loss Impact on Hydrogeological Parameter Computation

Analyzed the causation and determination of well toss in pumping tests, through the use of well loss computation method in water level dynamic changing process, illuminated the Ulan Tolgoi water head site WL6 borehole pumping test data well loss computation program and worked out an empirical formula of theoretical and measured drawdown acceptable for the water head site. Through the use of Aqui Test software computed phreatic water （confined water） pumping well permeability coefficients and specific yields （specific storages） under both well loss ignored and considered two conditions. From the results, parameters from well loss eonsidered thus drawdown amended are larger than from well loss ignored; well loss impact to phreatic water pumping test data is larger than to confined water.