水资源和环境工程中水平井研究简介

詹红兵; 万军伟

水资源和环境工程中水平井研究简介

詹红兵^1,,
万军伟²

1.
美国德克萨斯A&M大学地质与地球物理系, TX 77843-3115
2.
中国地质大学工程学院, 湖北武汉 430074

基金项目:

美国国家自然科学基金项目 DMI-BES-9909964

详细信息

作者简介:
詹红兵(1966-), 男, 美国Texas A&M大学地质与地球物理系助理教授(tenuretrack), 1989年毕业于中国科技大学, 1996年获美国内华达大学水文与水文地质专业博士学位, 现从事水文地质和环境工程方面的教学与科研工作.E-mail: zhan@geo.tamu.edu

中图分类号: X143;P641.2
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出版历程
- 收稿日期: 2003-05-28
- 刊出日期: 2003-09-25

Horizontal Wells in Water Resources and Environmental Engineering

ZHAN Hong-bing^1
,,
WAN Jun-wei²

1.
Department ofGeology and Geophysics, Texas A&M University, College Station, TX 77843-3115, USA
2.
Faculty ofEngineering, China University ofGeosciences, Wuhan 430074, China

摘要

摘要: 简单介绍了水平井在水资源和环境工程中的近期研究进展, 重点介绍了在不同含水层(如承压含水层、潜水含水层、越流含水层及河下含水层) 中, 水平井抽水条件下降深的半解析解, 同时分析了降深随抽水时间变化的标准曲线和微分标准曲线.这些半解析解可用于分析小流量水平井在中长时段的降深特性.分析了用于排水和供水的大流量水平井的水力学特征, 并介绍了求解渗流-管流耦合井流系统的一种新方法.同时介绍了在非饱和含水层中水平井抽取气体的动力学特征, 并分析了地面覆盖和未覆盖2种情况下的气体清除效率, 报告了在不同饱和含水层条件下水平井的捕获区和捕获时间的计算.
- 水平井 /
- 半解析解 /
- 捕获
Abstract: This article briefly introduces recent researches on horizontal wells in water resources and environmental engineering. This paper focuses on the location of semi-analytical solutions of groundwater flow to horizontal wells under different aquifer conditions such as confined, leaky confined, unconfined aquifers and aquifers under streams. The type curves and the derivative type curves of drawdowns are analyzed. Such semi-analytical solutions are useful for the interpretation of drawdowns characteristics after intermediate pumping time. This article also studies the hydraulics of a horizontal well at a large pumping rate, which is commonly used for dewatering and water supply. The authors have to consider the hydraulic head loss within the wellbore and to incorporate the Darcian flow and the pipe-flow into an integrated flow system. This article discusses vapor extraction in the unsaturated zone using horizontal wells and provides simplified analytical solutions to describe vapor pressure distribution and vapor flux across the ground surface (if the ground is open). It also reports the capture zone and capture time calculations under different aquifer conditions.
- horizontal well /
- semi-analytical solution /
- capture.

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图 1 水平井流动示意图

a.承压含水层水平井概念模型; b.抽水初始时刻垂直井轴的剖面径向流动; c.长时间抽水的水平径向流动

Fig. 1. Schematic diagram of (a) a horizontal well in a confined aquifer, (b) radial flow at the early pumping stage, and (c) horizontal pseudoradial flow at the late pumping stage

下载: 全尺寸图片幻灯片

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