一个新的半分析解决方案的过度化污泥测试在一个三层水库系统的三层水库系统
Mengxiong Cao1, Zhang Wen, Gang Chen1
1Hubei Key Laboratory of Yangtze Catchment Environmental Aquatic Science, School of Environmental Studies, China University of Geosciences, Wuhan, 430074, Hubei, People's Republic of China.
Ground water
|August 30, 2023
概括
这项研究引入了在三层含水层中进行测试的新模型,揭示了地下水相互作用的影响. 该模型提高了与单层方法相比,估计含水层参数的准确性.
科学领域:
- 水文地质学 水文地质学
- 环境工程 环境工程
- 地质科学 地质科学
背景情况:
- 试验是估计含水层参数的常用方法.
- 以前的研究主要集中在单层含水层系统.
- 了解层间地下水流对于准确的含水层评估至关重要.
研究的目的:
- 开发一种新型的半分析模型,用于在三层含水层系统中进行粘液测试,其中有部分穿透井.
- 分析各种参数对三层含水层内抽水的影响.
- 通过实验室实验验证拟议的模型并将其性能与现有模型进行比较.
主要方法:
- 在三层含水层中开发过渡流的半分析模型.
- 应用拉普拉斯变换法和戈尔德斯坦-韦伯变换法来解决模型.
- 分析提款数据以评估参数影响.
- 在三层含水层中进行实验室规模的试验,用于模型验证.
主要成果:
- 含水层层之间的地下水相互作用显著影响了测试结果.
- 更短,更深的井和更高的透率提高了层间的流量并增加了吸收.
- 与海德等人相比,拟议的模型在解释实验数据方面表现优越,与海德等人相比. (1994年) 的模型.
结论:
- 新的半分析模型准确地捕捉了在多层含水层中牛测试的复杂性.
- 该研究提供了对影响地下水流动和分层系统下降的因素的见解.
- 建议使用经验关系来识别在使用单层模型对多层含水层数据时可能出现的错误.
相关概念视频
Second Order systems II
130
In an underdamped second-order system, where the damping ratio ζ is between 0 and 1, a unit-step input results in a transfer function that, when transformed using the inverse Laplace method, reveals the output response. The output exhibits a damped sinusoidal oscillation, and the difference between the input and output is termed the error signal. This error signal also demonstrates damped oscillatory behavior. Eventually, as the system reaches a steady state, the error diminishes to zero.
130
Damped Oscillations
5.8K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
5.8K
Slump Test
265
The slump test is a widely used method to measure the workability of concrete. It employs a 12-inch high truncated cone mold that tapers from eight inches at the base to four inches at the top. Before testing, the mold is securely attached to a flat base and dampened.
Concrete is poured into the mold in three layers to conduct the test. Each layer is compacted 25 times with a steel tamping rod, which has a five-eighths-inch diameter and a rounded end, to ensure even distribution and eliminate...
Concrete is poured into the mold in three layers to conduct the test. Each layer is compacted 25 times with a steel tamping rod, which has a five-eighths-inch diameter and a rounded end, to ensure even distribution and eliminate...
265
Typical Model Studies
380
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
380


