SU1446225A1 - Method of damming river flow - Google Patents

Abstract

The invention relates to the field of hydraulic engineering. The purpose of the invention is to simplify the work technology, improve quality, and also reduce the cost of construction. When the river bed closes, first production-: WATER dumps a part of the high banquet 2 only from one bank with a minimum supply but at the crest of the water level. After that, a part of the main banquet is withdrawn in the non-divided section to form an overflow through the dumped part of the high banquet. Then, the horse banquet 5 is poured to the full height from the opposite-facing bank until it closes in with the part of the banquet previously poured out. The downstairs banquet is poured until the speeds in the passage of the downstairs banquet are reached by the razyvak values for the material of the bed 1. Perhaps before dumping the downstairs banquet. to crepinate the ridge and lower slope of the sprinkled part of the upper banquet. w, n f-ly, 10 ill. a (o

Description

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This invention relates to hydraulic engineering and construction.

The purpose of the invention is to simplify the technology of work, improve quality and also reduce the cost of construction.

FIG. 1 shows the first overlap stage, a section along the axis of the high banquet; figure 2 is the same, along the axis of the downstairs banquet; in fig. 3 and 4 - the same for the second overlap stage; in fig. 5 and 6 are the same for the third overlap stage; in fig. 7 and 8 are the same for the fourth overlap stage; FIG. 9 is a plan of the overlap of the river bed; figure 10 is a section aa in Fig, 9.

At the first stage of overlapping (Fig. 1, dumping is carried out in the channel of 1 part of the upper banquet 2 from one of the banks in the upper level. Part of the upper banquet 2 is filled up until the speed in the upper banquet reaches the eroding value for the channel material 1 or a banquet 2. Mark the ridge of the part of the high banquet 2 in the high pole is taken by calculation with a minimum margin (on the order of 0.2-0.3) from the water level before the high banquet at the moment of reaching the smearing speed. downstream part of the bank Eta 2 is fixed with unwashable material 3. In the alignment of the downstairs banquet (Fig. 2), the channel narrowing is not performed at this stage.

I After the sweeping speed in the high platform is reached, the dumping speed is temporarily stopped, and at the second stage, part of the banquet 4 in the basement from one 1 shire is fired from two banks simultaneously (Fig. 4). The dumping of the downstairs banquet 4 is made at the full rated height. Down party banquet 4 is lost until the speed in the gap of the down party banquet reaches a blurring value for bed material 1 or banquet 4. After dumping part of the banquet 4 in the bottom section, the level before the banquet goes up, the total drop Z at the banquets increases and redistribution between high and low banquets (Fig. 10). In connection with the increase in the total difference Z, the flow rate on the culvert

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waterworks, the flow in the riverbed overlaps decreases, the overflow through part of the high banquet 2 begins (Fig. 3), and the speed in the upper platform again becomes less than the eroding channel or the banquet 2.

At the third stage, the overlap is poured a part of the upper banquet 5 from the opposite bank to the Full height before closing it with a part of the upper bank 2 (figure 5). At the same time, the total differential Z, an even greater potential, - will melt, which leads to an increase in costs through the culverts, a decrease in the costs in the channel being blocked, and consequently, a decrease in speed at the downstairs banquet. This allows the continuation of TOiTb from the bottom-down banquet and its part 6 (Fig. 6) in parallel with the downstream part of the high banquet 5 and to ease the overlap conditions at the top 5 banquet.

At the final fourth stage, the high banquet is closed from both sides on the artificial underwater threshold created at the first stage and the full switching of costs for the waterworks of the waterworks facility, the low banquet, parts 7 and 8 are produced in parallel with the filling of the upper b. overlapping conditions at the top banquet (Fig. 7

and 8):

Claims (2)

1. The way to close the river bed, which consists in filling banquets from both banks, is the fact that, in order to simplify the work technology, improve quality, and also reduce the cost of construction, dumping part of the downstairs banquet from one bank with a minimum margin along the ridge above the water level, then pouring down part of the downstairs banquet in the lower section to form — overflowing over the decayed portion of the upland banquet, and then throwing the banquet from the opposite shore to the full height from Addi ctive previously backfilled with upland banquet part with its subsequent dosypki five 0 five above the water level and simultaneous filling of the banquet in the downstream station.  the lower banquet is produced by combing the ridge on the lower slope 2. The method according to claim 1, about tl and h and yu - pannaya part of the upper banquet, .and and with the fact that before dumping Thebes 1 3 uuciMuQOifiCeDQ &. - R Favor.Z Ft $  the lower banquet is produced by combing the ridge on the lower slope Pannaya part of the upper banquet, H - 1  Fav. 7 Figz  /// / 7 / // 7 ///, / A Phage: iO