【作者】 段乃金；

【导师】 钱会；

【作者基本信息】 长安大学 ， 地下水科学与工程， 2010， 硕士

【摘要】 反映地下水在含水层或透水层中运动和储存特性的水文地质参数,是进行各种水文地质计算时不可缺少的参数。利用解析法求水文地质参数,是实践工作中经常利用的方法。其优点是解析解是连续的函数,可以给出任意空间点和时间点的精确水头值。但对于潜水井流,传统的利用裘布依公式计算的参数往往差距很大,难以直接选用。为了更好的利用解析法计算研究区潜水含水层水文地质参数,本文在详细分析现有资料及前人研究成果的基础上,系统地研究了解析法井流公式的基本原理及计算潜水含水层水文地质参数的优缺点,首次利用博尔顿法及纽曼法计算银川地区潜水含水层水文地质参数,研究成果将为实践工作起到一定的参考意义,论文的主要研究内容及结论如下：(1)本次研究采用单抽水井带多观测井的方式,进行了三组非稳定流抽水试验,两组位于炼油厂厂区,另一组位于废渣场试验区。炼油厂厂区弥散试验历时149小时,废渣场弥散试验历时193.5小时。对水位及温度进行了同步观测,取得了科学、准确的数据。(2)对仿泰斯井流公式假定条件及理论基础进行了深入分析。在概化研究区水文地质条件的前提下,利用仿泰斯井流公式计算潜水含水层水文地质参数。结果表明：1)炼油厂厂区渗透系数K=6.132m／d,废渣场试验区渗透系数K=4.531m／d。2)炼油厂厂区渗透系数随抽水流量的增大而增大,废渣场试验区的渗透系数随抽水流量的增大而减小。(3)对博尔顿井流公式假定条件及理论基础进行了深入分析,进一步了解了该公式考虑重力滞后给水的原理及应用该模型应满足的潜水含水层水文地质条件。利用博尔顿井流公式计算潜水含水层水文地质参数,结果表明：1)炼油厂厂区导水系数T=258m2／d,渗透系数K=8.39m／d,给水度μ=0.23,滞后指数1／α=77；废渣场试验区导水系数T=315m2／d,渗透系数K=6.63m／d,给水度μ=0.173,滞后指数1／α=59。2)由滞后指数可以得到,炼油厂厂区和废渣场试验区的重力滞后给水时间较短。(4)对纽曼井流公式假定条件及理论基础进行了深入分析,进一步了解了该公式考虑垂向分量及应用该模型应满足的潜水含水层水文地质条件。利用纽曼井流公式计算潜水含水层水文地质参数,结果表明：炼油厂厂区导水系数T=199m2／d,渗透系数K=5.28m／d,给水度μ=0.24,废渣场试验区导数系数T=238m2／d,渗透系数K=5.72m／d,给水度μ=0.249。(5)通过对比三种井流公式假定条件在研究区的适用性及计算潜水含水层水文地质参数的侧重点不同得出,纽曼井流模型的假定条件与研究区的水文地质条件拟合最好,并且利用该井流公式计算结果最接近该研究区经验值。因此,认为在研究区利用纽曼井流公式计算研究区潜水含水层水文地质参数具有优势。更多还原

【Abstract】 Reflecting the underground water in the aquifer or filter movement and storage characteristics of hydro-geological parameters is to carry out various hydrological calculation of parameters of an indispensable. Analytic method are often used to calculat the hydrogeology parameters in practical work. Its advantage is analytical solution is a continuous functions, you can get precise head of every the space point and time point value. But for the dive well flow, dupuit formula for calculating parameters are often vary, so it is difficult to directly use. In order to better use analytical method for calculation of phreatic water aquifer of hydro-geological parameters, base on the present material and the research results by predecessors, this paper study on the analytical method of well flow formula for the basic principle and calculation of phreatic water aquifer advantages and disadvantages of hydro-geological parameters. The research results provided scientific base for practical work for the play. The results are summarized as following:(1) There are three groups of pumping test, two groups in the Refinery Plant while one group in dump zone, base on single pumping well with multi-observation well. The former last 149 hours, while the later 193.5 hours, and obtained water head,water temperature.(2) Analysis theroretical basis of Theis well flow formula and its assuming conditions. Under the premise of the generalizability hydrology geological condition, using fake Theis well flow formula for calculation of phreatic water aquifer of hydro-geological parameters. The results show as following:1) permeability coefficient of Refinery Plant K=6.132m/d and permeability coefficient of dump zone K=4.531m/d.2) Permeability coefficient of refinery factory with the increased water flow has increased, and permeability coefficient of dump zone with the increased water flow reduced.(3) Analysis theroretical basis of Bolton well flow formula and its assuming conditions. Research on the water-releasing principle of Bolton formula and using it should meet conditions of phreatic aquifer of hydrogeological. Using Bolton well flow formula for calculation of phreatic water aquifer of hydro-geological parameters. The results show as following:1) permeability coefficient, Coefficient of transmissibility, determination of specific and Lagging Index of Refinery Plant K=8.39m/d,T=258m2/d,μ=0.23,1/α=77; permeability coefficient Coefficient of transmissibility, determination of specific and Lagging Index of dump zone K=6.33m/d, T=315m2/d,μ=0.173,1/α=59.2) Lagging Index of Refinery Plant and dump zone is small.(4) Analysis theroretical basis of Newman well flow formula and its assuming conditions. Research on the water-releasing principle of Newman formula and using it should meet conditions of phreatic aquifer of hydrogeological. Using Newman well flow formula for calculation of phreatic water aquifer of hydro-geological parameters.1) permeability coefficient, Coefficient of transmissibility, and determination of specific of Refinery Plant K= 5.28m/d, T=199m2/d,μ=0.24; permeability coefficient Coefficient of transmissibility, and determination of specific of dump zone K=5.72m/d,T=238m2/d,μ=0.249.2)Lagging Index of Refinery Plant and dump zone is small.(5) By comparing the three well flow formula assumes that conditions in the research on the applicability and calculation of phreatic water aquifer focus of hydro-geological parameters of different come, Newman well flow model assumes condition and research of hydrogeological conditions of fitting the best, and using the well flow formula to calculate the results of the most close to the research experience. It has an advantage to calculation of hydro-geological parameters of phreatic water aquifer in testing area.更多还原