Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Keywords and Phrases

Aquifer, Aquitard, Aquiclude, Dug well, Recharge, Inverted well and Effective well diameter

Abstract

Barind is the land where the quality of life is inextricably linked to the availability of water. We are trying to help the section of people of such area where water is considered only from the viewpoint of quantity; they do not have the scope to think from quality aspect for their survival. The scale of poverty level here is normally measured on the basis of per capita income; however, to give a better indication about the quality of life, the accessibility for food, education, health, safe drinking water, sanitation, medicine and social empowerment for decision-making should also be included in these figures. Moreover, availability of drinking water is one of the basic human rights, and therefore should not be considered as a privilege. The presence of an aquifer is the prerequisite for the installation of any type of well. In certain areas of Barind tract there is no screenable aquifer. Hence, surface water of ponds and river is being used as the source of drinking water as well as the source of bathing of villagers and their domestic animals, cleaning of house hold utensils and also used as source to meet the needs for supplementary irrigation. There are also many areas where there is no source of surface water and a totally water-bearing strata (aquifer), an essential element for well construction, is absent. The nature and cause of concern are as follows: (a) no aquifer, sometimes only aquitard and aquiclude (b) very deep static water table say deeper than sixty feet- which leads to a twofold resultpeople in neighboring areas lead inhuman life style and suffer from water borne diseases of mainly skin and stomach. Academically we define: Aquifer: a formation, group of formation, or part of a formation that contains sufficient saturated permeable material to yield economical quantities of water to wells and springs. Aquitard: A geologic formation, group of formations, or part of formation through which virtually no water moves. Aquiclude: A saturated, but poorly permeable bed, formation, or group of formations that does not yield water freely to a well or springs. However, an aquiclude may transmit appreciable water to or from adjacent aquifers. (Groundwater and wells of Johnson Division, USA, 1987) However, the dug wells are installed at a depth of around one hundred feet having absolutely no aquifer. The cement rings are being used as well casing. Practically these wells are installed within the aquitard and aquiclude zone. The lithological classifications of the encountered layers are of pure clay-to-clay loam. The discharge from these wells is very small say ranging from 1 to 4 liter per second. This discharge is meeting the need of household water supply pumping in the water tank located on the roof of second floor. The homestead gardening, nursery maintenance and supplementary irrigation to rice and wheat are also being observed. In the recent past a new type of short well in respect of depth having very thin aquifer has been invented/introduced with a quite reasonable discharge say around three cusec equivalent to 84 liter per second. This is something unique invention, projecting the well screens of four numbers in upward direction along the wall of well casing. The shortest well of only 73 feet total well configuration depth produces 84 liter per second. This type of well number is presently around three hundred are working for irrigation successfully for the last ten to fifteen years. These are locally known as Inverted well and favored and preferred by the farmers. The continuous test pumping for ninety-two hours has been conducted to assess the hydrogeological parameter and sustainability of the encountered aquifer. In conclusion this type of well has been proved to be wonderfully successful.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fifth Conference

Publisher

University of Missouri--Rolla

Publication Date

4-13-2004

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

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Apr 13th, 12:00 AM Apr 17th, 12:00 AM

Groundwater Abstraction from Aquitard, Aquiclude and Thin Aquifer in Barind

New York, New York

Barind is the land where the quality of life is inextricably linked to the availability of water. We are trying to help the section of people of such area where water is considered only from the viewpoint of quantity; they do not have the scope to think from quality aspect for their survival. The scale of poverty level here is normally measured on the basis of per capita income; however, to give a better indication about the quality of life, the accessibility for food, education, health, safe drinking water, sanitation, medicine and social empowerment for decision-making should also be included in these figures. Moreover, availability of drinking water is one of the basic human rights, and therefore should not be considered as a privilege. The presence of an aquifer is the prerequisite for the installation of any type of well. In certain areas of Barind tract there is no screenable aquifer. Hence, surface water of ponds and river is being used as the source of drinking water as well as the source of bathing of villagers and their domestic animals, cleaning of house hold utensils and also used as source to meet the needs for supplementary irrigation. There are also many areas where there is no source of surface water and a totally water-bearing strata (aquifer), an essential element for well construction, is absent. The nature and cause of concern are as follows: (a) no aquifer, sometimes only aquitard and aquiclude (b) very deep static water table say deeper than sixty feet- which leads to a twofold resultpeople in neighboring areas lead inhuman life style and suffer from water borne diseases of mainly skin and stomach. Academically we define: Aquifer: a formation, group of formation, or part of a formation that contains sufficient saturated permeable material to yield economical quantities of water to wells and springs. Aquitard: A geologic formation, group of formations, or part of formation through which virtually no water moves. Aquiclude: A saturated, but poorly permeable bed, formation, or group of formations that does not yield water freely to a well or springs. However, an aquiclude may transmit appreciable water to or from adjacent aquifers. (Groundwater and wells of Johnson Division, USA, 1987) However, the dug wells are installed at a depth of around one hundred feet having absolutely no aquifer. The cement rings are being used as well casing. Practically these wells are installed within the aquitard and aquiclude zone. The lithological classifications of the encountered layers are of pure clay-to-clay loam. The discharge from these wells is very small say ranging from 1 to 4 liter per second. This discharge is meeting the need of household water supply pumping in the water tank located on the roof of second floor. The homestead gardening, nursery maintenance and supplementary irrigation to rice and wheat are also being observed. In the recent past a new type of short well in respect of depth having very thin aquifer has been invented/introduced with a quite reasonable discharge say around three cusec equivalent to 84 liter per second. This is something unique invention, projecting the well screens of four numbers in upward direction along the wall of well casing. The shortest well of only 73 feet total well configuration depth produces 84 liter per second. This type of well number is presently around three hundred are working for irrigation successfully for the last ten to fifteen years. These are locally known as Inverted well and favored and preferred by the farmers. The continuous test pumping for ninety-two hours has been conducted to assess the hydrogeological parameter and sustainability of the encountered aquifer. In conclusion this type of well has been proved to be wonderfully successful.