SEISMOLOGY AND GEOLOGY ›› 2015, Vol. 37 ›› Issue (4): 982-990.DOI: 10.3969/j.issn.0253-4967.2015.04.004

• Special topic on earthquake prediction method • Previous Articles     Next Articles

the changing relationship of hydrogeological parameters of dadianzi well-aquifer system

DING Feng-he1, DAI Yong1, SONG Hui-ying2, WEI Jian-min1, CHA Si1   

  1. 1. Earthquake Administration of Inner Mongolia Autonomous Region, Hohhot 010010, China;
    2. Transportation Institute of Inner Mongolia University, Hohhot 010020, China
  • Received:2015-10-08 Online:2015-12-20 Published:2016-01-28

大甸子井-含水层系统水文地质参数间的变化关系

丁风和1, 戴勇1, 宋慧英2, 魏建民1, 查斯1   

  1. 1. 内蒙古自治区地震局, 呼和浩特 010010;
    2. 内蒙古大学交通学院, 呼和浩特 010020
  • 通讯作者: 戴勇
  • 作者简介:丁风和, 男, 1977年生, 2005年于中国地震局兰州地震研究所获硕士学位, 高级工程师, 研究方向为地震地下流体, 电话: 0471-6512438, E-mail: dingfenghe@126.com。
  • 基金资助:

    中国地震局监测预报司震情跟踪定向工作任务(2014010301)资助。

Abstract:

Hydrogeological parameter is an important index to characterize the hydrogeological properties of the aquifer, and has a clear physical basis and mechanism. Although the predecessors have made significant achievements in these areas, research is lacking on the changing law and relationship of the hydrogeological parameters of well-aquifer system. The digital water level and barometric pressure data of Dadianzi Well are used as the basis in this study. Based on the theories of elastic mechanics, rock mechanics and fluid mechanics, and using barometric pressure coefficient and tidal factor, the hydrogeological parameters in Dadianzi well-aquifer system in undrained conditions are studied. The corresponding water storage rate can also be obtained quantitatively. In addition, with the thickness of the aquifer, the pressure transmitting coefficient, the radius of the well and the frequency of the tidal wave, the permeability coefficient and transmissibility coefficient of well-aquifer system can be obtained, and the relationships between them are derived. The results show that: 1)There is an obvious power function relationship between porosity and solid skeleton volume compression coefficient, volume compression coefficient of water in aquifer, water storage rate, permeability coefficient and transmissibility coefficient. The volume compression coefficient of solid skeleton, water storage rate, permeability coefficient and transmissibility coefficient have a positive correlation with the porosity, the volume compression coefficient of water in aquifer decreases with increasing porosity. The volume compression coefficient of solid skeleton and water in aquifer can be well fitted to one of two quadratic polynomials. And the volume compression coefficient of water in aquifer is larger than the solid skeleton volume compression coefficient, water is more easily compressed. In addition, with the increase of water storage rate, the permeability coefficient and transmissibility coefficient also increase linearly; 2)Different from the traditional pumping test and indoor experiment, this paper uses the digital water level and other data, combined with the pressure coefficient and Venedikov tidal harmonic analysis results to access to the porosity, the volume compression coefficient of solid skeleton and water in aquifer medium, water storage rate, the permeability coefficient and the transmissibility coefficient. This method is simple and accurate.

Key words: Dadianzi well, artesian well-aquifer system, hydrogeological parameters, undrained condition

摘要:

基于弹性力学和流体力学等相关理论, 利用气压系数和潮汐因子, 研究了大甸子井-含水层系统在不排水状态下的水文地质参数。结果表明, 孔隙度与固体骨架的体积压缩系数、含水层内水的体积压缩系数、贮水率、渗透系数和导水系数间呈明显的幂函数关系。固体骨架的体积压缩系数、贮水率、渗透系数和导水系数随着孔隙度的增大而增大, 含水层内水的体积压缩系数随着孔隙度的增大而减小。固体骨架和含水层内水的体积压缩系数满足一元二次多项式关系, 且含水层内水的体积压缩系数要比固体骨架的体积压缩系数大, 水更易压缩。另外, 随着贮水率的增大, 渗透系数和导水系数也呈线性增大。

关键词: 大甸子井, 承压井-含水层系统, 水文地质参数, 不排水状态

CLC Number: