SU1194964A1 - Method of creating ice jam - Google Patents

Abstract

1. METHOD OF CREATING ICE BLOCKING mainly for floodplain irrigation by flooding, including the creation of coastal projections in a chosen river site and an artificially created floor of ice in front of the coastal projections, characterized in that, in order to increase the efficiency of irrigation by extending the period of flooding of the river floodplain during the flood period , in front of the frozen field in the center of the chosen section, before construction of ice, an artificial island with a rock layer is constructed, while holes are made in front of the island in a prone field, stops which set of log structures, and making further .namorazhivanie t floor. , i 2. The method according to Claim 1, characterized in that when the floor is frozen in a predetermined alignment across the riverbed with access to the shores of the CC-, log logs and whips get along.

Description

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The invention relates to hydraulic engineering, in particular to a method for creating an ice jam on rivers in areas of harsh climate.

The purpose of the invention is to increase the efficiency of irrigation by extending the period of flooding, nor to understand: the rivers in the flood period.

FIG. Figure 1 shows a diagram of the method for creating an ice jam; isometries; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 - an emphasis of a log design, the plan.

The method is carried out as follows.

In the selected river bank, coast projections 1 are erected before the ice drift, and in the center of the channel - a flooded artificial island 2 with a rough outline is often flooded or partially polished. At the beginning of the winter period, ice holes 3 are made in front of the artificial island 2, where holes of log structure 5 are installed, above which across the river on ice cover 3 with logs 6 are laid on the banks of the river, while the logs are laid in two rows and scrambling, they are tied together with braces and clamps. After placing and installing log lugs and connecting lashes, snow embankments 7 are made, inside which artificially freeze the ice field 8 to cover the banks and freeze the lugs 5 and 6 s. To form a solid ice massif. 6 reinforce, strengthen the ice frozen on them.

The frostbite emphasis 5 of the log construction may consist of 94964g

bed 9 and inclined 10 racks connected by lower 11 and upper 12 crossbars. The design has lower girders 13 and upper girders 14 braces, the rigidity of which is reinforced

the lower braces 15 and the upper braces 16. The log skid 17 is installed when it is necessary to transport the stopper 5 for reuse.

With the rise of the water level in the river, during the spring flood, after the ice breaks off from the coast, it is underwent15; A frozen field of ice 8 with the stops 5 frozen in Him and the connecting rods 6 advancing on the island. The frozen stops 5 abut the island. Shore ends

20 of the ice floor 8 abuts stationary coastal projections 1. Further ice movement ceases. Ice masses accumulate over the entire width of the river bed. Starts

25 create congestion. The water level in front of the mash rises and the floodplain of the river is flooded. When the water rises above the upper level of the stationary coastal projections, 1 part of the water and

30 ice goes over the body of the mash. At the same time, on the island in the direction of its top marks, there is some movement of frozen-in stops 5 together with frozen ice.

25 The ice in the mash gradually breaks down. After 3-5 days, the mash breaks through and the water level decreases. The ice-holding stops 5 remain on the island, and on the island

40 carries out a significant portion of the ice lashing log lashes 6, which are used for the same purposes in the following year.

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Claims (2)

1. A METHOD FOR CREATING ICE ICE mainly for floodplain irrigation by flooding, including the creation of coastal protrusions in a selected river cross section and an artificially frozen ice field in front of coastal protrusions, characterized in that, in order to increase irrigation efficiency by extending the flood period of floodplains in flood period, in front of the frozen field in the center of the selected alignment, an artificial island with a stone outline is built in front of the ice drift, while ice holes are made in front of the island in the frozen field, in which set the rests of the log structure, and produce further freezing of the field. _β 2. The method according to p. SU „„ 1194964