基于抽水试验的多种方法确定水文地质参数  

Determination of Hydrogeological Parameters by a Variety of Methods Based on the Pumping Test

作　　者：赵琳琳[1] 肖长来[1] 陈昌亮[1] 陈章 梁玉思 

机构地区：[1]吉林大学环境与资源学院,长春130021 [2]中冶地勘岩土工程有限责任公司,河北邯郸056000 [3]山东科技大学土木建筑学院,山东青岛266510

出　　处：《地下空间与工程学报》2015年第2期306-309,357,共5页Chinese Journal of Underground Space and Engineering

基　　金：吉林省科技攻关项目(20080543;20100452);教育部潜在油气资源项目(20100331-OSR01-7);水利部公益性项目(200901037)

摘　　要：水文地质参数对于地铁抗浮设计水位的确定,工程建设安全及安全运行等具有重要意义,野外抽水试验是确定水文地质参数的主要方法。本文以"长春市地铁一号线"南湖大路站抽水试验资料为依托,采用传统的稳定流公式法、非稳定流的直线图解法、Theis公式法等计算,并采用全程曲线拟合法进行计算,结合实际水文地质条件,多种方法对比分析,确定该地块渗透系数为45 m/d、导水系数13.50 m2/d及贮水系数为0.000 3。本次试验进一步验证了全程曲线拟合法在承压水含水层中的适应性,提出了井管回水的附加水位对抽水试验参数计算的影响。Hydrogeological parameter is very important to study anti-floating design water level for metro, safety of engineering construction and safe operation. The field pumping test is the main method for determining hydrogeological parameters. According to pumping test at Nanhu road station of subway line No.1 in Changchun City, the traditional formula method of steady flow, liner graphic method and Theis formula method are adopted to calculate hydrogeological parameters, which are counted by whole curve matching method. Combined with actual hydrogeological conditions and contrast analysis on varieties of methods ,it is certain that in this area the permeability coefficient is 45 m/d, hydraulic conductivity coefficient is 13.5 m/d, storage coefficient is 0.00 03 in the geological unit. The paper further verified adaptability of the whole curve fitting in artesian aquifer. At the same time, the article presents influence of tube backwater on parameter calculation.

关 键 词：抽水试验 全程曲线拟合法 水文地质参数 井管回水 

分 类 号：P641.73[天文地球—地质矿产勘探]