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600 m3/day of water is to be obtained from a proposed infiltration gallery, which is placed at 6m depth from sub-surface water-table. the coefficient of permeability of the soil aquifer is 100 m/day. find the length of the gallery if the drawdown in the gallery on pumping is not to exceed 4 m. the radius of influence may be assumed to be 100?
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600 m3/day of water is to be obtained from a proposed infiltration gal...
- **Given Data:**
- Water requirement: 600 m3/day
- Depth of infiltration gallery: 6m
- Coefficient of permeability: 100 m/day
- Maximum drawdown allowed: 4m
- Radius of influence: 100m
- **Calculations:**
- The formula to calculate the flow rate from an infiltration gallery is:
- Q = 2πKhdL
- Where Q is the flow rate, K is the coefficient of permeability, h is the drawdown, d is the depth of the gallery, and L is the length of the gallery.
- Substituting the given values, we get:
- 600 = 2π(100)(4)(6)L
- L = 600 / (2π(100)(4)(6))
- L ≈ 1.59 m
- **Conclusion:**
- The length of the infiltration gallery should be approximately 1.59 meters to meet the water requirement without exceeding the maximum drawdown limit of 4 meters.
- This length ensures that the radius of influence of the gallery, which is 100m, is sufficient to draw the required amount of water without causing excessive drawdown.
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600 m3/day of water is to be obtained from a proposed infiltration gallery, which is placed at 6m depth from sub-surface water-table. the coefficient of permeability of the soil aquifer is 100 m/day. find the length of the gallery if the drawdown in the gallery on pumping is not to exceed 4 m. the radius of influence may be assumed to be 100?
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600 m3/day of water is to be obtained from a proposed infiltration gallery, which is placed at 6m depth from sub-surface water-table. the coefficient of permeability of the soil aquifer is 100 m/day. find the length of the gallery if the drawdown in the gallery on pumping is not to exceed 4 m. the radius of influence may be assumed to be 100? for UPSC 2024 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about 600 m3/day of water is to be obtained from a proposed infiltration gallery, which is placed at 6m depth from sub-surface water-table. the coefficient of permeability of the soil aquifer is 100 m/day. find the length of the gallery if the drawdown in the gallery on pumping is not to exceed 4 m. the radius of influence may be assumed to be 100? covers all topics & solutions for UPSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 600 m3/day of water is to be obtained from a proposed infiltration gallery, which is placed at 6m depth from sub-surface water-table. the coefficient of permeability of the soil aquifer is 100 m/day. find the length of the gallery if the drawdown in the gallery on pumping is not to exceed 4 m. the radius of influence may be assumed to be 100?.
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