RU2569004C1 - Device for adjustment of underground water reserves - Google Patents

Abstract

FIELD: construction.SUBSTANCE: device comprises a water impermeable barrage 1 in a transverse river station, fully by capacity and width covering the water bearing bed and forming the main underground water pond 2, and a water intake of underground waters arranged upstream, for instance, in the form of a shaft well 3. The device comprises an additional water impermeable barrage 4, arranged in the transverse river station above the area of impact of the main underground water pond 2 in its upper reach and forming an additional underground water pond 6. The additional water impermeable barrage 4 has a hole 5 for passage of underground waters from the additional underground water pond 6. In the upper reach of the additional water impermeable barrage 4 there is a water receiving device, for instance, a shaft well 7, communicated by a pipeline 8 with the main underground water pond 2 via the hole 5. The pipeline 8 is equipped with a station 9 in the shaft well 7 for control of water flow from the water receiving device 7 into the main underground water pond 2.EFFECT: provision of the possibility of reliable water withdrawal in the required volume for the entire period of operation, including low-water periods of the year in mountain river valleys with periodically drying water course.1 dwg

Description

The invention relates to water supply and can be used to regulate the underground runoff of aquifers confined to the valleys of mountain rivers with periodically drying watercourse, to increase the reliability of water withdrawal or increase it.

A device is known for regulating groundwater reserves (Patent for invention RU No. 2244785, IPC В03B 3/32, 3/06, publ. 01.20.2005, Bull. No. 2), including a waterproof barrage in the transverse section of the river valley, fully in power and the width of the overlapping aquifer and forming an underground reservoir, and located above the intake. In this device, air blowing devices are installed within the influence zone of the water intake and air is periodically pumped into them, providing the formation of a waterproof barrage and an underground reservoir in the upper pool of the barrage. A disadvantage of the known device is that in an alluvial aquifer, the aeration zone of which is directly connected with the atmosphere, the creation of an air barrier is possible only in the winter when freezing the upper soil layer.

The closest in technical essence and the achieved effect is a device for regulating groundwater reserves, including a waterproof barrage in the transverse section of the river valley, completely covering the aquifer in thickness and width and forming an underground reservoir, and located above the intake (Hydrogeology. Engineering geology // Results Science and Technology. - M.: VINITI, 1974, v. 3, p. 15-16, Fig. 5b).

A disadvantage of the known device is the inability to provide reliable water withdrawal in the required volume throughout the entire period of operation, including during dry periods of the year in the valleys of mountain rivers with periodically drying up watercourse.

The technical result is the provision of reliable water withdrawal in the required volume throughout the entire period of operation, including in dry periods of the year in the valleys of mountain rivers with periodically drying up watercourse.

The technical result is achieved by the fact that the device for regulating groundwater reserves, including a waterproof barrage in the transverse section of the river valley, completely covering the aquifer in thickness and width and forming the main underground reservoir, and located above the intake, contains an additional waterproof barrage located in the transverse section river valleys above the zone of influence of the main underground reservoir in its upper pool and forming an additional underground reservoir of water a receiving device located in the upper pool of the additional waterproof barrage and connecting the secondary and main underground reservoirs with a valve to control the flow of water from the intake device to the main underground reservoir.

Distinctive features of the prototype are:

- an additional waterproof barrage, located in the transverse section of the river valley above the influence zone of the main underground reservoir in its upper pool and forming an additional underground reservoir;

- a water intake device located in the upper pool of the additional waterproof barrage;

- a pipeline with a valve connecting the additional and main underground reservoirs to regulate the flow of water from the water intake device to the main underground reservoir.

The specified set of distinctive features from the prototype of the features makes it possible to provide reliable water withdrawal in the required volume throughout the entire period of operation, including in dry periods of the year in the valleys of mountain rivers with periodically drying up watercourse.

The invention is illustrated in the drawing, where in Fig. 1 shows a device for regulating groundwater reserves.

A device for regulating groundwater reserves includes a waterproof barge 1, created, for example, by the “Wall in soil” method in a transverse section of a river valley in an aquifer, which completely covers the aquifer in thickness and width, which ensures the prevention of underground runoff beyond the barrage, underground waters and favorable conditions for their accumulation in the aquifer above the alignment of the location of this barrage with the formation of the main underground reservoir 2. In the main groundwater of reservoir 2, groundwater abstraction was constructed, for example, in the form of a mine well 3. At the same time, in the transverse section of the river valley above the zone of influence of the main underground reservoir, an additional waterproof barge 4 with a hole 5 for passage was constructed, for example, using the “Wall in the ground” method groundwater from an additional underground reservoir 6 formed by an additional waterproof barrage 4. In the upper pool of the additional waterproof barrage 4, a water intake device is installed, for example the mine well 7, connected by a pipe 8 with the main underground reservoir through an opening 5 for passing underground water from an additional underground reservoir 6. The pipeline 8 is equipped with a shutter 9 located in the mine well 7 to control the flow of water from the water intake device to the main underground reservoir 2.

The regulation of groundwater reserves by this device is implemented as follows. In the high water period of the year, before the low water period, the gate 9 is closed, and the flow of groundwater to underground reservoirs 2 and 6 comes from the river in sections of underground reservoirs 2 and 6 due to the infiltration of atmospheric precipitation and flood water, flooding part of the valley, directly on the underground reservoirs 2 and 6. Thus, provided that the influx of groundwater prevails over other components of the balance, in particular over the withdrawal from the mine well 3, groundwater accumulates in the underground reservoir 2.

In the high water period of the year, as a result of the accumulation of groundwater in underground reservoirs 2 and 6, their level rises and corresponds to the maximum level of water in the river.

In the initial period of low water availability, when the surface watercourse of the river dries up, in the underground reservoir 2 and in the additional underground reservoir 6, the depressed groundwater surfaces, respectively, occupy positions 10 and 11.

When the influx of water into the underground reservoir 2 due to the infiltration of precipitation decreases, the situation arises that the withdrawal from the mine well 3 exceeds the external influx of water. In this case, the groundwater level gradually drops and can reach the minimum marks represented by the depression curve at position 12. However, at the same time, in the initial period of low water availability, the volume of water in the additional underground reservoir 6 remains unchanged and corresponds to its maximum values. In order to prevent the level of the depression curve from falling to the minimum values of position 12, water level is monitored in the reservoir 2 and, by opening the shutter 9, in the mine well 7, the reservoir 2 is fed through the pipeline 8 from an additional underground reservoir 6.

Claims (1)

A device for regulating groundwater reserves, including a waterproof barge in the transverse section of the river valley, completely covering the aquifer in thickness and width and forming the main underground reservoir, and an upstream water intake, characterized in that it contains an additional waterproof barge located in the transverse section of the river valley above the zone of influence of the main underground reservoir in its upper pool and forming an additional underground reservoir, water intake device, aspolozhennoe upstream optional waterproof barrage, and connecting the additional and main underground reservoir conduit to the gate for controlling water flow from the water intake unit to the main underground reservoir.