SU1211381A1 - Dam - Google Patents

Description

one

The invention relates to hydraulic structures, namely, to water-supported dams made of elastic and flexible materials, and can be used in agriculture to regulate water regime, expand irrigated land, create artificial reservoirs, etc.

The purpose of the invention is to increase the overall and filtration stability of the dam.

The drawing shows a dam, a cross-section.

The dam includes a pressure elastic casing 1, a fur 2 in the form of an elastic web, the free end 3 of which is buried in the ground at an angle. О С to the bottom of the river 4, an additional elastic web 5, an apron 6, parabolic samples 7 at the free end of the pressure elastic casing 1 , delays 8 and flexible element 9.

An additional elastic web 5 is located between the end portions of the ponura 2, the aprons 6 and the pressure shell 1 and is buried in the ground at an angle оС to the bottom of the river 4 parallel to the free end 3 of the poroura. Moreover, the additional panel 5 is sunk into the ground to a greater depth than the free end 3 of the poroura.

The dam is erected and operates as follows.

The installation of the dam in the river bed is carried out with a diversion of the water flow through the diversion channels or under the protection of temporary bridges. All elements of the dam, rolled up, are dragged to the river and taken away in its channel so that the free end 3 of the ponur and the additional elastic panel 5 are placed in the prefabricated trenches at an angle. to the bottom of the river 4 and parallel to each other. The depth of the additional elastic sheet 5 in the ground h exceeds the depth hg of the free end 3 in the ground, as the water in the upper pool increases the tipping force acting on the supporting shell 1

VNIIPI Order 618/36 Circulation 642 Subscription Branch PIP Patent, Uzhgorod, Proektna St., 4

ten

15

20

25

thirty

35

40

45

50

3812

P, which is immediately perceived by the friction force of the additional panel 5 on the soil of the river bottom 4.

After the free end 3 of the hollow and the additional sheet 5 is installed in the trenches of the river bottom 4, the latter are filled with local soil, sand, gravel, or hard concrete with their layer-by-layer compaction.

Then, at the bottom of the river 4, between the trenches, an elastic donor 2 is placed and the pressure shell 1 is placed in the working position, which through parabolic samples 7 is fixed to the shore supports via parabolic samples 7 by means of pull 8 and flexible element 9.

Thereafter, in the downstream to the bottom of the river 4, an apron 6 is laid, also made in the form of an elastic panel.

The overturning force P is compensated for in the lower part of the dam by the force of frill pondura 2, free end 3 ponura, additional panel 5 and apron 6 on the bottom of the river bottom 4. The force of their friction is proportional to the force of hydrostatic pressure Q. Ponur 2 recessed by the free end 3 in ground, securely fixed to the bottom of the river 4.

The lower part of the dam is also fixed at the expense of deepening into the ground an additional elastic panel 5 at the junction of the substructure 2, shell 1 and apron 6.

The stability of the dam is increased due to the presence of an additional panel 5 buried in the ground, its anchoring properties, preventing erosion of the soil of the river bottom 4 in the space between the buried free end 3 of the poroura and the additional panel 3.

The presence of an additional elastic panel 5 makes it possible to increase by 3-4 times the filtration path of the water in the soil of the dam base, thereby increasing its filtration resistance and general stability due to an increase in the ground friction force on the additional panel, eliminating soil erosion under the dam and sequencing in the work of a large volume of soil dam foundation under the action of force P

Claims (1)

WEIR including a pressure elastic shell and a ponur in the form of an elastic cloth buried with its free end into the ground at an acute angle to the bottom of the river, characterized in that, in order to increase the overall and filtration stability of the dam, the ponur is equipped with an additional elastic cloth buried in the ground parallel to the free end ponura and connected to the end parts of the pressure elastic shell, ponura and apron.