| 摘要 |
1. The method of constructing an infiltrating water intake consists in constructing a collecting chamber and connecting it to drains laid under a river bottom. Characterized in that: The chamber is constructed in two stages. First, the V-shaped wall (1) is constructed with Larsen's piles, so that the open part of the chamber (2) is directed towards the river. Then, the winning is removed from the chamber and the open part of the chamber (2) is closed with a semicircular steel wall (3) with cut-off gate valves (4), mounted at the entrance places of future drains. The bottom of the chamber is reinforced and concreted under water. Then, water is removed from the chamber, its walls and its ceiling are reinforced and concreted, while leaving assembly openings (10) for pumps, cut-off valves and control valves. Then, the connections (5) between the collecting chamber and drains are constructed. The drains near the intake chamber (2) have the form of full pipes (6), running radially with the inclination of less than 4 m. Then, the proper drains (7) in the form of perforated pipes are laid horizontally. First, they run radially, and then they run parallel (8) to each other. The drains are put into an excavation in the river bottom, preferably by means of a floating platform. The drains are laid on a layer of gravel bed (9). The drain cross-section diameter diminishes as drains are further away from the water intake chamber, to ensure constant water flow speed. Once positioned, the drains are covered with a layer of gravel and a layer of river sand. 4. River-bank infiltration water intake is equipped with a chamber, connected to a set of drains and a set of pumps with valves. Characterized in that: The collecting chamber (2) has a V-shaped form, with the arms directed towards the river, and closed with a semicircular wall (3). The connections (6) between the drains (7, 8) and the chamber (2) run radially from the latter. The connections are made of full pipes, with the inclination of up to 4 m. When they take the form of proper drains (7) and (8), they are made of horizontally-positioned perforated pipes, which run at first radially (7) from the chamber, and then parallel to each other (8). The diameter of drains diminishes gradually, so that it ensures the water flow speed does not fall below 2 mps.
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