Preliminary Study of Ground Water Infiltration in Shenzhen Drainage System

2011 ◽  
Author(s):  
Daixiongqi ◽  
Zhaoxinhua ◽  
Liuxuhui ◽  
Goulven INIAL
Keyword(s):  
Ground Water ◽  
Drainage System ◽  
Water Infiltration ◽  
Preliminary Study

Iptek Bagi Masyarakat: Sumur Resapan Desa Tanjung Gusta untuk Pengendali Banjir

2017 ◽  
Vol 1 (2) ◽  
pp. 44
Author(s):  
Fahrizal Zulkarnain
Keyword(s):  
Ground Water ◽  
Water Surface ◽  
Soil Layer ◽  
Drainage System ◽  
Water Infiltration ◽  
Water Volume ◽  
Residential Areas ◽  
Deep Soil ◽  
Short Time ◽  
The Impact

The use of infiltration well as a flood controller can also be useful in anticipation of the decrease in the watertable in the dry season. Infiltration well also serves to maintain the ground water level, decrease groundwatercontamination, reduce groundwater degradation, help to overcome the lack of clean water, maintain water balance in thesoil, reduce the stagnant residential areas due to poorly functioning drainage system, and reduce soil erosion in someplaces due to lack of water infiltration into the soil. The water from the infiltration well will lead to a deep soil layer sothat the decrease of the ground water surface will not occur in a short time due to its existence. Community participationin implementing infiltration wells is very functional and will significantly reduce the impact of floods. In general, infiltration wells that can help reduce surface water are those that have a well dimension of 2 x 2 x 2 meters, thusaccommodating the water volume of  8 m3 expected to be impregnated into the ground as soon as possible to cope with flooding

A study on the effects of urban runoff controls in the sandsli research catchment, Bergen, Norway

1997 ◽  
Vol 36 (8-9) ◽  
pp. 379-384
Author(s):  
Sveinn T. Thorolfsson
Keyword(s):  
Ground Water ◽  
Stormwater Management ◽  
Drainage System ◽  
Urban Runoff ◽  
Source Control ◽  
Urban Stormwater ◽  
Urban Stormwater Management ◽  
Water Conditions

This paper describes a case study on a new alternative drainage system for urban stormwater management, the so-called “Sandsli-system”. The aim of this study is to evaluate the Sandsli system and the effects of the solution on ground water conditions. The study is carried out in the Sandsli research catchment in Bergen, Norway. The idea behind the “Sandsli-system is not to mix the polluted and the clean stormwater combined with a source control for both stormwater quantity and quality. The clean stormwater is percolated as quickly as possible, while the polluted stormwater is collected and conducted to an appropriate site for disposal or treatment. The Sandsli-system was developed as an alternative drainage system to the conventional drainage system. The system has been functioning satisfactorily since 1981 to date. The advantages of the use of the Sandsli-system is highlighted i.e. recharging the stormwater to the ground water. The Sandsli-system is appropriate to locations with climate and geology similar to that found in the coastal part of Norway

Preliminary study of the lymphatic drainage system of the nose and paranasal sinuses and its role in detection of sentinel metastatic nodes

2005 ◽  
Vol 125 (5) ◽  
pp. 566-570 ◽  
Author(s):  
J. M. Sánchez Fernández ◽  
F. Santaolalla ◽  
A. Sánchez Del Rey ◽  
A. Martínez-Ibargüen ◽  
A. González ◽  
...  
Keyword(s):  
Paranasal Sinuses ◽  
Drainage System ◽  
Lymphatic Drainage ◽  
Preliminary Study ◽  
Nose And Paranasal Sinuses

scholarly journals Dampak Dinamika Muka Air Tanah pada Besaran Dan Laju Emisi Carbon Di Lahan Rawa Gambut Tropika

2018 ◽  
Vol 14 (1) ◽  
pp. 15-30
Author(s):  
L. Budi Triadi ◽  
Fengky F. Adji ◽  
Yudi Lasmana
Keyword(s):  
Land Use ◽  
Land Use Change ◽  
Ground Water ◽  
Emission Rate ◽  
Drainage System ◽  
Fire Risk ◽  
System Planning ◽  
Scientific Methods ◽  
Central Kalimantan ◽  
Co2 Equivalent

Drainage of peatlands will lower the water table, decompose the organics matter and increases the fire risk. Therefore knowledge of C emission rate is very important for drainage system planning, in order to preservepeat. Scientific methods that used in this study: calculation of thickness/ depth of the peat, peat volume, oxidized peat volume, C dry peat weight and CO2 equivalent. The rate of emission C is calculated on the basisof emission C and subsidence time. Furthermore, the emission rate C (Mton CO2/ yr) is calculated based on 4 (four) model/ scenario concepts, i.e: actual/ existing condition, plantation, canal blocking and canal blocking with reforestation. This activity was conducted in Sei Ahas, Kapuas, Central Kalimantan and Sungai Buluh, Tanjung Jabung Timur, Jambi. Based on research, it was found that land use change will greatly affect the change of ground water level of peat that contributes to increases the emission of C to the atmosphere.

scholarly journals Designing catchment area for water resources management in ITS campus

2018 ◽  
Vol 48 ◽  
pp. 05002
Author(s):  
Joni Hermana ◽  
Irhamah ◽  
Dian Saptarini ◽  
Tatas
Keyword(s):  
Surface Water ◽  
Water Resources ◽  
Ground Water ◽  
Catchment Area ◽  
Drainage System ◽  
Coastal Region ◽  
Building Blocks ◽  
Drainage Water ◽  
Environmental Damage ◽  
High Level

Institut Teknologi Sepuluh Nopember (ITS) Campus, with the area of 167.4 Ha, is located within Surabaya coastal region in the eastern part of Java Island. It has initial characteristic with wetlands and swamps ecosystem. As a science and technological university, with the main acitivities in teaching, experimental laboratory works, and student activities, ITS is, currently, using ± 49% of its total vast area as building blocks for supporting academic facilities. Being a campus in a coastal zone, the commonly main problems are high porous soil, brackish surface water, high level of ground water, an obstructed drainage tendency because of delicate slant, and low catchment capability. This paper provides an action program on how ITS manage water resources within campus area in order to suppress environmental damage. Many steps had been taken into account for water catchment role, for instance: maintaining the catchment area on the main ITS master plan, planning catchment pond, surface water stabilization by preventing ground water usage, interrupting drainage water flow as being directly discharged into the city drainage system, rain water harvesting, and also designing floating floor for buildings.

Evaluation of the potential to dispose of sewage-sludge. 1. Soil hydraulic and overland-flow properties of Pinus plantations in Queensland

Soil Research ◽  
1995 ◽  
Vol 33 (6) ◽  
pp. 1041 ◽  
Author(s):  
A Costantini ◽  
RJ Loch ◽  
SF Glanville ◽  
DN Orange
Keyword(s):  
Sewage Sludge ◽  
Ground Water ◽  
Overland Flow ◽  
Water Movement ◽  
Soil Surface ◽  
Water Infiltration ◽  
Podzolic Soils ◽  
Antecedent Conditions ◽  
Ground Water Pollution ◽  
Sludge Application

The studies reported in this paper were designed to evaluate the potential for disposal of sewage sludge in commercial Pinus plantations at Beerburrum, 50 km north of Brisbane. Soil descriptions and measurements of hydraulic properties were made in three soils, covering the range of perceived site suitability for sludge application. Disc permeameters and a rainfall simulator were used to characterize surface infiltration properties both with and without sludge, and ponded rings were used to assess permeability of the upper B horizon. Although surface hydraulic conductivities were potentially high, infiltration into dry soil was reduced by water repellence associated with fungal matting at the soil surface and mycelia extending through the Al horizon. Surface runoff could be generated from dry soils by relatively low intensity rainfall events, and the rate and volume of runoff was not increased by broadcast sludge application. Hydraulic conductivities of the upper Bt horizons in the lateritic and yellow podzolic soils were high, suggesting that persistent perched watertable development was unlikely. However, the presence of bleached A2 horizons and gleyed Bt horizons with prominent mottling in these soils were interpreted as evidence of periodic regional ground-water intrusion. By contrast, hydraulic conductivity in the Bt horizon of the soloth was low, suggesting that locally restricted drainage occurs. Likely pathways of water movement were inferred for three representative soil types in the proposed sludge application project. There is potential for both Hortonian runoff when antecedent conditions are dry, and saturated runoff during prolonged wet periods. Potential off-site pollution could therefore occur if either solids or solutes from the sludge are susceptible to transport. In addition, preferential how paths of water infiltration were demonstrated, and the potential for accelerated water and solute movement to ground watertables was inferred. The studies reported in this, and the second, paper in the series were used to appraise the potential for either surface water or ground water pollution from land-based sludge disposal.

Analysis of the Tunnel Disease Considering the Unsaturated Loess Matric Suction Effects

2013 ◽  
Vol 859 ◽  
pp. 182-185 ◽  
Author(s):  
Xiao Hui Xue ◽  
Zhong Ming Su ◽  
Zhi Jie Sun ◽  
Fei Song
Keyword(s):  
Plastic Zone ◽  
Shear Test ◽  
Drainage System ◽  
Matric Suction ◽  
Water Infiltration ◽  
Disease Treatment ◽  
Tunnel Support ◽  
Internal Relation ◽  
Unsaturated Loess ◽  
Supporting Force

In order to analysis the internal relation between the matric suction change and the tunnel disease, the paper combines the Dayoushan tunnel as an engineering example, uses the mathematical, field monitoring and model shear test and to analysis the the change rule of the martic suction and the influence of martic suction on the tunnle supporting force and plastic zone. The results show that when the water content is increasing, the unsaturated loess matric suction is reduction, the force of tunnel support is increasing and the radius of plastic zone is increasing. Due to the influence of surface water infiltration, the matric suction of the around soil in Dayoushan tunnel is reduction and cause the crown settlement, landslides and lining cracks. The disease treatment mainly lies in keeping the drainage system is smooth and secure for waterproof. For the similar unsaturated loess tunnel, the research results have reference significance.

scholarly journals Ground-water intrusions in a mine beneath Høganesbreen, Svalbard: assessing the possibility of evacuating water subglacially

2003 ◽  
Vol 37 ◽  
pp. 269-274 ◽  
Author(s):  
Kjetil Melvold ◽  
Thomas Schuler ◽  
Gaute Lappegard
Keyword(s):  
Ground Water ◽  
Drainage System ◽  
Hot Water ◽  
Measured Temperature ◽  
System A ◽  
Basal Ice ◽  
Global Positioning ◽  
Pressure Melting ◽  
Ground Penetrating ◽  
The Given

AbstractEvacuation of the ground-water intruding into a coal mine beneath Høganesbreen, Svalbard, is difficult and expensive. To solve this problem, it was proposed that the mine be connected to the ice–bedrock interface. Pumping hot water from the mine should establish a flow path along the glacier bed where the ground-water would drain gravitationally. In this paper, we assess the requirements for maintaining such a drainage system in open-channel conditions. To obtain the bedrock topography, we determined the ice thickness by ground-penetrating radar and subtracted it from the surface elevation measured by global positioning system. A measured temperature profile at the site where the mine should connect to the glacier bed (140m depth) revealed that the basal ice is below the pressure-melting point. The locations of major subglacial conduits were estimated using a hydraulic-potential approach. We adopted a model oftime-dependent discharge through a Röthlisberger channel to calculate a set of scenarios using different flow-law parameters. Results of the simulations suggest that for the given conditions, water flow would be pressurized, thereby inhibiting the gravitational drainage of the mine.

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