scholarly journals Typical case analysis of deep tunnel drainage system in urban area

2017 ◽  
Vol 62 (27) ◽  
pp. 3269-3276 ◽  
Author(s):  
JiaHong LIU ◽  
Lin XIA ◽  
Hao WANG ◽  
WeiWei SHAO ◽  
XiangYi DING
Keyword(s):  
Urban Area ◽  
Drainage System ◽  
Case Analysis ◽  
Typical Case ◽  
Deep Tunnel

Typical case analysis of overload damage fault in distribution station area

2020 ◽  
Author(s):  
Dai WAN ◽  
Weihua ZHOU ◽  
Fei QI ◽  
Hengyi ZHOU ◽  
Miao ZHAO ◽  
...  
Keyword(s):  
Case Analysis ◽  
Typical Case ◽  
Distribution Station

Study of diffuse source pollution management for land use and drainage system planning

2001 ◽  
Vol 44 (7) ◽  
pp. 203-208 ◽  
Author(s):  
K. Yamada ◽  
T. Funaki ◽  
S. Honda ◽  
M. Sugihara
Keyword(s):  
Land Use ◽  
Urban Area ◽  
Land Use Planning ◽  
Urban Areas ◽  
Drainage System ◽  
Pollutant Removal ◽  
Storm Events ◽  
Road Surfaces ◽  
Using Data

This study aims to clarify the mass balance of pollutants during both dry periods and storm events and to discuss the effects of some strategies such as pollutant removal, land use planning and new drainage systems by simulation. Three subjects are discussed in this paper. First, the amount of pollutants entering Lake Biwa from an urban area have been roughly estimated by using data collected by the local government. Second, many additional samples were collected from road surfaces, house roofs and parking lots to consider the role of land use in pollutant runoff. Third, some ongoing BMP projects in an urban area are introduced. As a result, some ideas on how to solve the problem of diffuse pollution in urban areas have been obtained.

The Key Technologies of Comprehensive Utilization for Urban Rain Flood Based on the Multi-Function Tunnel

2013 ◽  
Vol 726-731 ◽  
pp. 3056-3059 ◽  
Author(s):  
Jun Yan ◽  
Hong Lu Bai ◽  
Wei Gao ◽  
Fang Kai Ma
Keyword(s):  
Urban Area ◽  
Drainage System ◽  
Flood Disaster ◽  
Rapid Urbanization ◽  
Key Technology ◽  
Comprehensive Utilization ◽  
Foreign Countries ◽  
Key Technologies

Pipe drainage system is used mostly on urban area, but under the pressure of the rapid urbanization, the disadvantages of traditional pipe drainage system are more and more serious. Analyzed the urban rain flood utilization situation in China and foreign countries, and main problems of traditional pipe drainage system in China, the key technology of comprehensive utilization for urban rain flood is put forward, which contains the multi-function tunnel building based on the concave green fields constructing, permeable bricks laying, reservoir constructing for rain flood collecting. This method can effectively prevent the drought or flood disaster due to inadequate or extensive rain volume and can make full use of rain flood resources too.

A dense network of rain gauges within an urban area: Rainfall uncertainty and variability

2021 ◽  
Author(s):  
Luc Neppel ◽  
Pierre Marchand ◽  
Pascal Finaud-Guyot ◽  
Vincent Guinot ◽  
Christian Salles
Keyword(s):  
Spatial Variability ◽  
Urban Area ◽  
Urban Areas ◽  
Rainfall Variability ◽  
Temporal Structure ◽  
Drainage System ◽  
Spatiotemporal Variability ◽  
Small Scale ◽  
Rain Gauges ◽  
Rain Gauges Network

<p>This study presents a new high density rain gauges network installed in urban area to study spatio-temporal structure and variability of precipitation at small scales. The preliminary results concerning gauges calibration and characterization of the rainfall spatial variability at fine scale are discussed.</p><p>In urban areas, the impervious surfaces connected to the drainage system leads to highly dynamic flows. The flood and runoff risk characterization requires  fine spatiotemporal scale to describe hydrological model input data :rainfall within spatial scale of less than 1km and temporal scale close to 1minis necessary for urban hydrological applications and risk assessment. In order to characterize small-scale rainfall spatiotemporal variability, a dense rain gauges network is deployed at Montpellier (France) with inter-gauges distances from 100m to 1km. Currently, 9 tipping bucket rain gauges  associated with 9 anemometers are acquiring rainfall and wind norm intensity every minutes. The network density and extension will be increased soon.</p><p>The first year measurements highlight a spatial variability of the 1-minute rainfall at the subkilometer scale. This observed variability is analyzed in view of the measurement uncertainty (gauge calibration, gauge error, bias due to the gauge location) to identify the natural rainfall variability.</p><p>This contribution presents the new densely extensive rainfall  network measurement, the typing bucket raingauge calibration and highlights that the observed 1-minute rainfall intensity variability  is significant and cannot be only explained by the measurement uncertainties.</p>

Analysis of Accident in Electrical Engineering

2012 ◽  
Vol 459 ◽  
pp. 492-495
Author(s):  
Long Chen ◽  
Ke Fan Xie
Keyword(s):  
Dimensional Analysis ◽  
Electrical Engineering ◽  
Three Dimensional ◽  
Case Analysis ◽  
Engineering Management ◽  
Accident Prevention ◽  
Typical Case ◽  
Accident Risk ◽  
Material Organization

This paper conducts a case statistics analysis of 199 mega-accidents in electrical engineering that occurred in China to examine the causes of the accidents. The paper carries out a classification of the mega-accidents in electrical engineering, and conducts a three-dimensional analysis of the accident risk in electrical engineering. In the three-dimensional of material, organization and individual layers, the dispersion of accidents has certain characteristics. This paper provides analytical support to electrical engineering management and accident prevention, and carries out a typical case analysis

Study on Rain Water Drainage System Plan Based on SWMM

2013 ◽  
Vol 790 ◽  
pp. 125-128
Author(s):  
Bin Gao ◽  
Bao Yu Zhuang
Keyword(s):  
Simulation Model ◽  
Urban Area ◽  
North China ◽  
Drainage System ◽  
Rain Water ◽  
Water Drainage ◽  
Water Logging

How to plan and design a citys rain water drainage system reasonably to control a citys water logging arouses peoples concern in China. In an urban area of North China, a simulation model of rain water drainage system based on SWMM is built. Different schemes of rain water drainage system are evaluated and optimized.

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