摘要
本文以单井稳定流抽水为例,从井固流场与地下水向集水井幅射流的涌水量方程入手,阐明井结构,井周泥浆堵塞和井内水位降深的关系。证明了水跃值是井周泥浆堵塞降深与井周三维流或紊流引起的二次项降深(简称“井损”)之代数和,并得出了水跃值不同组成部分随井内降深变化而变化的规律。从而提出了消除水跃值,利用裘布依涌水量方程进行水文地质参数计算。
With the single-well steady-flow pumping as example, starting with the water-inflow equation of radiating groundwater flow towards collecting wells and circum-well flow field, the relationship between well structure, circum-well mud plugging and drawdown of water level within wells is discussed. It is proved that the hydraulic jump value is the algebraic sum of the circum-well mud-plugging drawdown and the qudratic-term drawdown caused by circum-well three-dimensionat flow or turbulent flow, and the regularity of variation of different components of the hydraulic jump value with the variation of drawdown within the wells is recognized. And thereby, the elimination of hydraulic jump and the application of the Dupuit's hydaulic discharge equation to the calculation of hydrogeological parameters are proposed.
出处
《水文地质工程地质》
CAS
CSCD
北大核心
1993年第6期24-27,52,共5页
Hydrogeology & Engineering Geology
关键词
井周流场
水位降深
地下水
Circum-well flow field
hydraulic jump value
drawdown of water level
regularity of variation
