2 m 3 m y dry = 15 KN/m³ y Sat. = 20 KN/m³
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- The parameters of the Horton equation are fo = 7(cm/st), fc = 1 (cm/st) and the coefficient k = 4 (1/st¹). Accordingly, the total water leaking from an area of 2 ha to the ground in a day (24 hours) find its volume.In a month of 30 days, the water level of a 1375-ha reservoir dropped by 0.75m in spite of an average inflow reservoir of 0.5 cu. Mm/day. During the month, the average seepage loss from the reservoir was 2.5 cm, total precipitation on the reservoir was 18.5 cm and the total evaporation was 9.5 cm. 1. Estimate the constant rate of withdrawal from the reservoir in m3/sec.Estimate the constant rate of withdrawal from a 1375 ha reservoir in a month of 30 days during which the reservoir level dropped by 0.75 m in spite of an average inflow into the reservoir of 500,000 m 3 /day. During the month the average seepage loss from the reservoir was 2.5 cm, total precipitation on the reservoir was 18.5 cm and the total evaporation was 9.5 cm.
- 17. Using horizontal direction in cm/day 18. if the hydraulic gradually for the soil formation is 0.75 19 aquifer in cubic meters per day pls ans:During July, 1996 monthly inflow to Tarbela Reservoir was 20 billion cubic meters and outflow was 18.70 billion cubic meters. Find the rate of change of storage and change in storage during the period.Refer to Figure 6.14. Find the flow rate in m3 /s/m length (at right angles to the crosssection shown) through the permeable soil layer given H = 3 m, H1 = 2.5 m, h = 2.8 m, L = 25 m, a = 10°, and k = 0.04 cm/s.
- The hydraulic conductivities of the soils in the direction of flow through them are as follows: Soil A =0.01 cm/s Soil B=0.003 cm/s Soil C=0.00049 cm/s a) Find hA and hB (Ans. 287.86 mm and 247.44, respectively)Find the rate of flow in m^3/sec/m (at right angles to the cross-section shown in Figure 7.33) through the permeable soil layer. Given: H 4 m, H1 2 m, h 2.75 m, S 30 m, a 14°, and k 0.075 cm/sec.A confined aquifer is 18.5 m thick. The hydraulic head drops 2.99 m between two wellsthat are 823 m apart. If the hydraulic conductivity of the aquifer is 4.35 m/d, how many cubicmeters of water are moving through the aquifer per unit width?
- L = 370 mm A = 145 cm^2 h = 340 mm Water collected in 3 min Q = 580 cm^3 Void ratio of sand e= 0.66 Determine the Hydraulic conductivity and seepage velocity.A confined aquifer underlies an unconfined aquifer as shown. Compute the equivalent horizontal coeff. of permebility Compute the hydraulic gradient Compute the flow rate from one stream to another per meter widthA reservoir has a capacity of 6.0x106 m3 and a drainage area of 200 km2. The annual stream flow averages 350 mm of runoff and the sediment production is 1100 metric tons per km How long will it take to reduce the reservoir volume to 1.0x106 m3 if the sediment consists of 10% sand, 39% silt and 51%