Rectification of Ground Water Leakage During Metro Tunnel Operation

2021 ◽  
pp. 1-10
Author(s):  
Wen Jen Chang ◽  
Chi Hong Chan ◽  
Hsin Ming Shang
Keyword(s):  
Ground Water ◽  
Water Leakage ◽  
Metro Tunnel

scholarly journals WATER LEAKAGE DIAGNOSIS IN METRO TUNNELS BY INTERGRATION OF LASER POINT CLOUD AND INFRARED THERMAL IMAGING

2018 ◽  
Vol XLII-3 ◽  
pp. 2167-2171
Author(s):  
P. Yu ◽  
H. Wu ◽  
C. Liu ◽  
Z. Xu
Keyword(s):  
Distance Function ◽  
Thermal Imaging ◽  
Point Cloud ◽  
Laser Scanning ◽  
Water Leakage ◽  
Infrared Thermal Imaging ◽  
Centroid Distance ◽  
Metro Tunnel ◽  
Infrared Thermal Images ◽  
Centroid Distance Function

Diagnosis of water leakage in metro tunnels is of great significance to the metro tunnel construction and the safety of metro operation. A method that integrates laser scanning and infrared thermal imaging is proposed for the diagnosis of water leakage. The diagnosis of water leakage in this paper is mainly divided into two parts: extraction of water leakage geometry information and extraction of water leakage attribute information. Firstly, the suspected water leakage is obtained by threshold segmentation based on the point cloud of tunnel. And the real water leakage is obtained by the auxiliary interpretation of infrared thermal images. Then, the characteristic of isotherm outline is expressed by solving Centroid Distance Function to determine the type of water leakage. Similarly, the location of leakage silt and the direction of crack are calculated by finding coordinates of feature points on Centroid Distance Function. Finally, a metro tunnel part in Shanghai was selected as the case area to make experiment and the result shown that the proposed method in this paper can be used to diagnosis water leakage disease completely and accurately.

scholarly journals Water leakage detection monitoring and controlling system using IOT

2018 ◽  
Vol 7 (2.7) ◽  
pp. 12
Author(s):  
P Swetha Reddy ◽  
K V.Chanakya ◽  
B Eswari ◽  
Ch Bhupati
Keyword(s):  
Water Supply ◽  
Ground Water ◽  
Water Level ◽  
Water Distribution ◽  
Leakage Detection ◽  
Water Leakage ◽  
Motor Functioning ◽  
Turn On ◽  
Controlling System ◽  
Water Leakage Detection

The Water is the most valuable because it is a basic need of all humans, in these days water supply department are facing problem because of less amount of water due to less rainfall, lowering of ground water in spite of all these problems water leakage from pipelines while supplying and also no monitoring of water distribution and controlling. With increment in population, neighborhoods have expanded as a result of this reason water has turned into a major issue which influences in distribution, conservation, consumption and also the quality so, to overcome all these problems and create system economical there’s want of  correct observance and dominant system. In this paper, we are proposing a system which can detect the leakages, monitoring and controlling if water supply in pipelines. Sensors places in the tank which continuously informs the water level of water in the tank. The motor functioning will be automatically turn on and when tank is about to fill up it will cut off.

GEOHYDROLOGIC WELL-LOGGING

1972 ◽  
Vol 3 (3) ◽  
pp. 165-182 ◽  
Author(s):  
H. HOUTKAMP ◽  
G. JACKS
Keyword(s):  
Ground Water ◽  
General Information ◽  
Local Information ◽  
The Self ◽  
Well Logs ◽  
Water Leakage ◽  
Precambrian Rocks ◽  
Hard Rocks ◽  
Self Potential ◽  
Underground Constructions

Well-logs have been used to gain geohydrologic information mainly in Precambrian rocks. The logs used are the self-potential, the diameter, the temperature, and the electric conductivity of water. Applications have given general information on the occurrence of ground water in hard rocks. The logging technique seems to be of particular value in connection with underground constructions in rock when detailed local information is necessary in order to avoid ground water leakage even in minor quantities.

Optimization of a well system using the Ground Water Management package of MODFLOW-2000

2016 ◽  
Vol 39 ◽  
pp. 101-104 ◽  
Author(s):  
Anna Grava ◽  
Marco Rotiroti ◽  
Letizia Fumagalli ◽  
Tullia Bonomi
Keyword(s):  
Water Management ◽  
Ground Water

PHYSICOCHEMICAL ANALYSIS OF GROUND WATER AND SURFACE WATER IN KOTA REGION, RAJASTHAN, INDIA

2018 ◽  
Vol 24 (1) ◽  
Author(s):  
NITU SINGH ◽  
FATIMA SULTANA
Keyword(s):  
Surface Water ◽  
Ground Water ◽  
Growth And Development ◽  
Physicochemical Parameters ◽  
Total Dissolved Solids ◽  
Physicochemical Analysis ◽  
Total Hardness ◽  
Developing Nation ◽  
The Sustainable Development ◽  
Chloride Sulfate

India is a developing nation and is dependent on its natural resources for growth and development. Water, being one of the vital natural resource, must be used judicially for the sustainable development. Present study focuses on the analysis of physicochemical parameters (pH, Turbidity, Alkalinity, Total Hardness, Total dissolved solids, Conductivity, Chloride, Sulfate, Fluoride contents) of ground water and surface water in Kota City (Rajasthan). The study shows the adverse impact of exploitation and urbanization on water resources of Kota City (Rajasthan). Some physicochemical parameters exceed the desirable limits as defined by WHO and Indian Standards in the selected sites. The level of pollution in ground water and surface water of Kota City is increasing due to urbanization.

Analytical solution for estimating the influence of a pre-existing ground water flow on a geothermal heat production-injection well system

2011 ◽  
Vol 2 (1) ◽  
pp. 13-17
Author(s):  
I. David ◽  
M. Visescu
Keyword(s):  
Ground Water ◽  
Water Flow ◽  
Geothermal Energy ◽  
Flow Direction ◽  
Energy Resource ◽  
Hot Water ◽  
Injection Well ◽  
Production Well ◽  
Ground Water Flow ◽  
The Earth

Abstract Geothermal energy source is the heat from the Earth, which ranges from the shallow ground (the upper 100 m of the Earth) to the hot water and hot rock which is a few thousand meters beneath the Earth's surface. In both cases the so-called open systems for geothermal energy resource exploitation consist of a groundwater production well to supply heat energy and an injection well to return the cooled water, from the heat pump after the thermal energy transfer, in the underground. In the paper an analytical method for a rapid estimation of the ground water flow direction effect on the coupled production well and injection well system will be proposed. The method will be illustrated with solutions and images for representative flow directions respect to the axis of the production/injection well system.

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