New Design Criteria for Subsurface Drainage System Considering Heat Flow Within Soil

2018 ◽  
pp. 87-119
Author(s):  
Mahmoud A. M. Abdelrahman
Keyword(s):  
Heat Flow ◽  
Drainage System ◽  
Subsurface Drainage ◽  
Design Criteria

scholarly journals Advances and Challenging Issues in Subsurface Drainage Module Technology and BIOECODS: A Review

2018 ◽  
Vol 203 ◽  
pp. 07005 ◽  
Author(s):  
Abdurrasheed Sa'id Abdurrasheed ◽  
Khamaruzaman Wan Yusof ◽  
Husna Bt Takaijudin ◽  
Aminuddin Ab. Ghani ◽  
Muhammad Mujahid Muhammad ◽  
...  
Keyword(s):  
Drainage System ◽  
Numerical Data ◽  
Subsurface Drainage ◽  
Infiltration Capacity ◽  
Sustainable Solutions ◽  
Ecologically Sustainable ◽  
The Impact ◽  
Flow Attenuation ◽  
Permeability Rate ◽  
Over Time

Subsurface drainage modules are important components of the Bio-ecological Drainage System (BIOECODS) which is a system designed to manage stormwater quantity and quality using constructed grass swales, subsurface modules, dry and wet ponds. BIOECODS is gradually gaining attention as one of the most ecologically sustainable solutions to the frequent flash floods in Malaysia and the rest of the world with a focus on the impact of the subsurface modules to the effectiveness of the system. Nearly two decades of post-construction research in the BIOECODS technology, there is need to review findings and areas of improvement in the system. Thus, this study highlighted the key advances and challenges in these subsurface drainage modules through an extensive review of related literature. From the study, more work is required on the hydraulic characteristics, flow attenuation and direct validation methods between field, laboratory, and numerical data. Also, there is concern over the loss of efficiency during the design life especially the infiltration capacity of the module, the state of the geotextile and hydronet over time. It is recommended for the sake of higher performance, that there should be an onsite methodology to assess the permeability, rate of clogging and condition of the geotextile as well as the hydronet over time.

Risk Analysis of Permeable Layer in Pavement Subsurface Drainage System

2019 ◽  
Vol 145 (3) ◽  
pp. 04019028 ◽  
Author(s):  
Shubham A. Kalore ◽  
G. L. Sivakumar Babu ◽  
Rajib B. Mallick
Keyword(s):  
Risk Analysis ◽  
Drainage System ◽  
Subsurface Drainage ◽  
Permeable Layer

Studies on Salt and Water Movement in Secondary Salinized Greenhouse Soil under Subsurface Drainage

2012 ◽  
Vol 518-523 ◽  
pp. 98-101
Author(s):  
Ting Ting Chang ◽  
Xiao Hou Shao ◽  
Jie Zhang ◽  
Long Wang
Keyword(s):  
Considerable Increase ◽  
Surface Soil ◽  
Water Movement ◽  
Drainage System ◽  
Subsurface Drainage ◽  
Greenhouse Soil ◽  
Moisture Contents ◽  
Field Investigations

The secondary salinized greenhouse soil was provided with subsurface pipe drainage system with drainage spacing 6 m and drain depth 0.4m to study the movement of salt and water. The field investigations indicated that the resalination rates of the surface soil with subsurface drainage system were lower than those with non-drained system (CK) in an irrigation circle of the crop. The resalination rate of the surface soil right above the drainage tubes (T1) was significantly lower than that between the two drainage tubes (T2). At the 5th day after irrigation, the soil volumetric moisture contents of different treatments were significantly decreased and the resalination of surface soil were obvious. The results showed a considerable increase of resalination rate after irrigation that was varied at the 5th day as following sequence: CK(10.6%) > T2(8%) > T1(7%).

RESPONSE OF WHEAT TO NITROGEN AND POTASSIUM IN SALINE SOILS

2001 ◽  
Vol 37 (3) ◽  
pp. 417-427 ◽  
Author(s):  
K. N. Singh ◽  
D. P. Sharma
Keyword(s):  
Drainage System ◽  
Growth Yield ◽  
Subsurface Drainage ◽  
Saline Soils ◽  
Available N ◽  
The Status ◽  
Basal Half ◽  
K Concentration ◽  
Control Application ◽  
Dry Matter Weight

A field experiment to evaluate the effect of N, K and time of K application on the growth, yield and chemical composition of wheat (Triticum aestivum) grown in saline soil with subsurface drainage, was conducted at the Central Soil Salinity Research Institute, Karnal Research Farm, Sampla during the winter seasons of 1992–93 to 1994–95. The treatments consisted of three levels each of N (0, 120 and 150 kg ha−1) and K (0, 50 and 75 kg ha−1) with the K applied at two different times (full basal and half basal + half top dressed 30 d after sowing). The growth characteristics (plant height, number of tillers and dry matter weight m−2 recorded at 60 d after sowing) and yield-attributing parameters (number of productive tillers and length of spikes) increased significantly with increasing N levels up to 150 kg ha−1 and K levels up to 50 kg ha−1. Similar responses of N and K were also observed on grain and straw yields of wheat. Time of K application had no significant effect on growth and yields. The N concentration in grain and straw increased significantly with the application of 120 kg N ha−1 over control. Application of K had no significant effect on the concentration of N in grain and straw. The K concentration in grain and straw increased significantly due to the application of 50 kg K ha−1 but it was unaffected by the time of K application. Application of K increased the efficiency of utilization of applied N. A trend towards declining salinity of the soil profile due to leaching through the subsurface drainage system was observed from 1992–93 to 1994–95. For three consecutive years the status of available N and K in surface soil (0–30 cm depth) increased due to their respective applications. This field study indicates that 150 kg N and 50 kg K ha−1 should be applied under canal-irrigated conditions to get the sustainable and optimum yield of wheat in saline soils.

scholarly journals Impact of Subsurface Drainage System on Water Table and Soil Hydologic Parameters

2017 ◽  
Vol 6 (7) ◽  
pp. 4014-4020
Author(s):  
Rahul Patil ◽  
P. Balakrishnan ◽  
U. Satish Kumar ◽  
G.V. Srinivasa Reddy ◽  
A.S. Channabasavanna ◽  
...  
Keyword(s):  
Water Table ◽  
Drainage System ◽  
Subsurface Drainage

scholarly journals Prairie Pothole Region Wetlands and Subsurface Drainage Systems: Key Factors for Determining Drainage Setback Distances

2018 ◽  
Vol 9 (1) ◽  
pp. 274-284 ◽  
Author(s):  
Brian A. Tangen ◽  
Mark T. Wiltermuth
Keyword(s):  
North Dakota ◽  
Prairie Pothole Region ◽  
Drainage System ◽  
Wetland Hydrology ◽  
Subsurface Drainage ◽  
Conservation Easements ◽  
Prairie Pothole ◽  
Negative Effects ◽  
Drainage Systems ◽  
Fish And Wildlife Service

Abstract Use of agricultural subsurface drainage systems in the Prairie Pothole Region of North America continues to increase, prompting concerns over potential negative effects to the Region's vital wetlands. The U.S. Fish and Wildlife Service protects a large number of wetlands through conservation easements that often utilize standard lateral setback distances to provide buffers between wetlands and drainage systems. Because of a lack of information pertaining to the efficacy of these setback distances for protecting wetlands, information is required to support the decision making for placement of subsurface drainage systems adjacent to wetlands. We used qualitative graphical analyses and data comparisons to identify characteristics of subsurface drainage systems and wetland catchments that could be considered when assessing setback distances. We also compared setback distances with catchment slope lengths to determine if they typically exclude drainage systems from the catchment. We demonstrated that depth of a subsurface drainage system is a key factor for determining drainage setback distances. Drainage systems located closer to the surface (shallow) typically could be associated with shorter lateral setback distances compared with deeper systems. Subsurface drainage systems would be allowed within a wetland's catchment for 44–59% of catchments associated with wetland conservation easements in North Dakota. More specifically, results suggest that drainage setback distances generally would exclude drainage systems from catchments of the smaller wetlands that typically have shorter slopes in the adjacent upland contributing area. For larger wetlands, however, considerable areas of the catchment would be vulnerable to drainage that may affect wetland hydrology. U.S. Fish and Wildlife Service easements are associated with > 2,000 km2 of wetlands in North Dakota, demonstrating great potential to protect these systems from drainage depending on policies for installing subsurface drainage systems on these lands. The length of slope of individual catchments and depth of subsurface drainage systems could be considered when prescribing drainage setback distances and assessing potential effects to wetland hydrology. Moreover, because of uncertainties associated with the efficacy of standard drainage setback distances, exclusion of subsurface drainage systems from wetland catchments would be ideal when the goal is to protect wetlands.

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