SU1063923A1 - Water intake of dam - Google Patents

Abstract

Dam intakes, comprising a supply present and zaregulirvaNyoe bed, stporvodozabora and watering dprryoe structure, characterized in that, in order to increase reliability of the water intake to debris rivers, water retaining structure configured as an earth dam consisting of uneven portions conjugated zhenny51 stepwise, moreover, the lower portion has a rotation axis in the plan on. angle close to 90 ° and directed by the apex in the stor.chu downstream channel: (L С 05 со со со со со

Description

The invention relates to hydraulic engineering, and more specifically to water intake on debris rivers. A dam water intake is known, which includes a supply channel, a water intake station and a water supporting structure 1. A dam water intake is also known, including a supply and regulated riverbed, a water intake pipeline and a water supporting structure (2. However, when a debris stream flows along a river channel, it has a large destructive structure. force, the water supporting structure is subjected to a significant dynamic impact, which leads to the failure of both the water supporting structure and other elements of the water intake. improvement of the reliability of water intake on debris rivers. This goal is achieved by the fact that, in the dam intake, the water-supporting structure is made in the form of a green dam consisting of unevenly elevated, conjugated sections, stepwise, and the lower section has an axis rotation in terms of to 90 ° and directed by the apex towards the supply channel. Fig. I shows the flesh water intake, top view, Fig. 2 shows node I in Fig. 1, and Fig. 3 shows section A-A in Fig. ; in fig. 4 shows a section BB in FIG. one; in fig. 5 - section bb. in FIG. J. Water intake includes supply channel 1, regulated channel 2, water intake section 3, water supporting structure in the form of a dam consisting of elevated section 4, stepped partition 5 and reduced section 6, as well as diverting section 7 of the channel. The water supporting structure is located on the section of the channel 1 behind the regulated channel 2 to ensure the passage of the mudflow, the minima of the reservoir 3 of the intake. Section 4 is shifted downward from the entrance to the regulated pyq / io 2 to the distance J, (0.6-0.8) B (where B is the width of the stable supply channel) to form in the riverbed 1 of the river with less flooding; than debris zones with unbreakable velocities. Compared with section 6, section 4 is made higher than 0.5 m to provide protection from the mudflow of the coastal zone adjacent to site 3 in the collection area. Section 6, in relation to section 4., is moved upwards along channel 1 at a distance (0,., 5) B from the entrance to regulated channel 2 with a low ridge to be destroyed by the mudflow in the first place. The partition 5 connects the elevated section 4 with the reduced section by a step in order to facilitate its destruction by the mudflow and is placed normally in relation to sections 4 and 6 to accelerate the destruction of section 6 and protect section 4. The sections 4 and 6 and - the partition 5 are made of local alluvial soil without securing the slopes for rapid destruction by the mudslide, cost reduction and rapid recovery after the passage of villages. The height Hj of the reduced section is 6 op. determined from the condition of maintenance before: the water supporting structure of the design: ypoBHjT of water, corresponding in proportion to: the water intake class, to the flow of water in the river of 1–5% of availability. Laying of the upper and lower slopes of the dam and partition, 5-2. Mudflow, flow to the water supporting structure with elements 4-6, completely destroys section 6, partition 5 and partly, parts 4. In the initial period, overflowing through the water support unit, the construction takes place in the zone of the supply section 6 and partitions 5, where concentrated frontal and lateral specific consumption of water quickly destroy the loose downstream slope. Under the impact of section 4 of the mudflow, the flow deviates in the direction of the bank opposite the intake area 3; / After the partition 5, part b and part of section 4 is destroyed, the mudflow continues to move along diverter section 7 of the channel 8, mine 3 of the intake. The approximate economic efficiency of the use of the invention is determined by the savings in the costs of restoring a water intake structure destroyed by a cathrophic mudflow. When using the invention, subject to destruction. There is only a supporting structure, the cost of which is significantly less than the cost of water intake.

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Claims (1)

WEATHER DRAINAGE, which includes the overflow of the regulated channel, the water intake station and the water supply structure, characterized in that, in order to increase the reliability of the water intake on mudflow rivers, the water support structure is made in the form of an earthen dam, consisting of uneven sections connected in steps, moreover the lowered section has an axis rotation in the plan at / angle close to 90 ° and directed by the apex towards the inlet channel.