以水库为水源自流引水水力计算(国外英文资料).docVIP

以水库为水源自流引水水力计算(国外英文资料) The hydraulic calculation of water diversion is based on the reservoir Determine the formula Hydraulic calculation schematic (figure 1) H0 = del 1 - (del 2 + H1) Type in the H0 - action head (m); H1 - the free head (m) required by the water plant; Del 1 - reservoir water level (m); Del 2 - water plant water point high ground level (m); Two ways of calculating the flow of a long tube: The calculation formula is: H0 = ALQ2 Type in the H0 - action head (m); A - (s2 / m6). L - tube length (m); Q - flux (m3 / s); The calculation formula for the calculation of hydraulic slope is: J = Type in the J - hydraulic grade; H0 - action head (m); L - tube length (m); For different pipes, the flow rate is different from the hydraulic slope, this example is the reinforced concrete pipe, which adopts the xies formula: J = Type in the V - velocity (m/s); C minus the coefficient of a factor; According to mannings formula, C = r1/6 (applicable scope: n 0.020, R 0.5 m;) N -- rough coefficients; R - the radius of water, for the circle of R = (m); The pump head H And then H is equal to del 4 minus del 3 plus Calculate the list comparison According to the above formula, according to the low water level in winter, according to the real terrain and water distribution of the town, select several different plane position, height, the site of factory, comparing the hydraulic calculation and economic and technical comparison calculation, the calculation results are shown in table below: Self-flow tube hydraulic calculation table 1 The water mill has a high water level Del 2 (m) 1. The results of the self-flow tube Low water level in winter Del 1 (m) 2. Water plant required free head H1 (m) 3. The role of head H0 (m) (4) Pipe diameter (m) 5. pipe 6. length (m) All landowners Hydraulic gradient J10-3 today The velocity M/s Pet-name ruby Design flow of dry water in winter Q (m3 / d) attending note (1 (4) = 7)... Design flow of water in winter water to calculate the water pl