CN210104771U - A plugging device for dewatering wells in water-rich strata - Google Patents

Abstract

The utility model relates to a plugging device for dewatering wells in water-rich strata, belonging to the technical field of tunnel construction engineering. A water-stop glue is arranged at the connection between the outer side of the top and the water-stop ring, a water-stop ring is connected to the top of the dewatering well, a water-stop plate is arranged at the connection between the inner side of the dewatering well top and the water-stop ring, and the top of the water-stop plate is provided with extending to the bottom of the dewatering well. The drainage pipe is provided with an anti-blocking net at the tail of the drainage pipe; the utility model adopts a water-stop ring at the top of the dewatering well, water-stop plates and water-stop glue on both sides of the inner and outer sides to ensure the water-stop effect, and self-priming is adopted during the blocking period. The pump conducts precipitation through the drainage pipe, and after the plugging is completed, it is used for grouting and recharging to ensure the plugging effect of the precipitation well.

Description

A plugging device for dewatering wells in water-rich strata

technical field

The utility model relates to a plugging device for dewatering wells in water-rich strata, belonging to the field of municipal engineering construction.

Background technique

Because the underground engineering involves dewatering and drainage construction, during the construction of the main structure, the normal drainage of the dewatering well can ensure that the groundwater level is within the safe range below the foundation pit floor. With the completion of the main structure, the surrounding groundwater level will rise, and the groundwater level and pressure will also rise. Increase. The plugging of the bottom dewatering well is often a difficult point in construction. It is necessary to ensure that the dewatering well plugging can be easily constructed and at the same time ensure a good water stop effect. Therefore, it is necessary to design a dewatering well plugging device for water-rich strata.

Utility model content

In order to overcome the problems existing in the background technology, the utility model adopts a water-stop ring on the top of the dewatering well, water-stop plates and water-stop glue on both sides of the inner and outer sides to ensure the water-stop effect. Precipitation, after the plugging is completed, it is used for grouting and recharging to ensure the plugging effect of the precipitation well.

In order to overcome the problems existing in the background technology, in order to solve the above problems, the present invention is realized through the following technical solutions:

The plugging device for dewatering wells in water-rich strata includes a dewatering well, a water stop ring, a drain pipe, a valve, a water stop plate, a support rib, and a water stop glue. Support ribs are evenly connected to the well wall outside the well, a water stop ring is connected to the top of the dewatering well, a water stop glue is arranged at the connection between the top of the dewatering well and the water stop ring, and a water stop plate is arranged at the connection between the inner side of the dewatering well and the water stop ring. The top of the water stop plate is provided with a drain pipe extending to the bottom of the dewatering well, and an anti-blocking net is provided at the tail of the drain pipe.

Preferably, the dewatering well is buried at 1/2 of the thickness of the self-waterproof concrete bottom plate.

Preferably, a valve is provided at the position of the drain pipe at the top of the water stop plate.

Preferably, the part of the drainage pipe located below the self-waterproof concrete bottom plate is evenly provided with through holes, and the drainage pipe with uniform through holes is wrapped with an anti-blocking net, and the anti-blocking net is wound and fixed with iron wires, and the anti-blocking net is selected Nylon gauze.

Preferably, the water stop plate and the support ribs are made of steel plates and steel bars, respectively.

The beneficial effects of the present utility model are:

The utility model adopts a water-stop ring arranged on the top of the dewatering well, water-stop plates and water-stop glues are arranged on both sides of the inner and outer sides to ensure the water-stop effect. Grouting recharge to ensure the plugging effect of dewatering wells.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the section A-A of the utility model;

FIG. 3 is a schematic diagram of the utility model A not enlarged.

The numbers in the figure are: 1-water-relief well, 2-waterproof ring, 3-drainage pipe, 4-valve, 5-waterproof board cabinet, 6-support rib, 7-waterproof glue.

Detailed ways

In order to make the objectives, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings, so as to facilitate the understanding of the skilled person.

As shown in Figures 1-3, the device for blocking the dewatering well 1 in the water-rich stratum includes a dewatering well 1, a water stop ring 2, a drain pipe 3, a valve 4, a water stop plate, a support rib 6, and a water stop glue 7. The dewatering well 1 is buried at 1/2 of the thickness of the self-waterproof concrete bottom plate. The outer well wall of the dewatering well 1 is evenly connected with support ribs 6. The supporting ribs 6 are made of steel bars and are welded with the outer well wall of the dewatering well 1. , the top of the dewatering well 1 is welded with a water-stop ring 2, and the connection between the top of the dewatering well 1 and the water-stop ring 2 is provided with a water-swellable water-stop glue 7 to strengthen the weak link. Before the structural sealing is completed, the dewatering well 1 adopts A submersible pump is used to extract precipitation. After the structural construction is closed, the graded gravel is used to backfill to the corresponding level, and the concrete with the same label as the bottom structure is used to fill the bottom of the water stop ring 2. The water plate and the water stop plate are made of 1cm thick steel plate, backfilled with gravel to the corresponding level, and filled with concrete with the same label as the bottom plate structure to the bottom of the water stop ring 2. The water stop plate needs to be welded firmly with the drain pipe 3. , processed into a whole, and at the same time welded firmly with the well wall and the water stop ring 2 through the steel bar, the top of the water stop plate is provided with a drain pipe 3 extending to the bottom of the dewatering well 1, the drain pipe 3 is made of φ50mm steel flower tube, the bottom of the drain pipe 3 The diameter of the openings is 1.5cm, and the spacing is 5cm×5cm in a plum-shaped arrangement. The diameter and quantity can be adjusted appropriately according to the content and pressure of groundwater. The drain pipe 3 is located at the top of the water stop plate. There is a valve 4. The drain pipe 3. The part below the self-waterproof concrete base plate is evenly provided with through holes, and the drainage pipes with uniform through holes are wrapped with anti-blocking nets. The anti-blocking nets are wound and fixed with iron wires. During the blocking period, in order to prevent the groundwater level from rising and thus affecting the blocking of the dewatering well 1, the precipitation is pumped and drained through the drainage pipe 3 by the self-priming pump. After the concrete under the water stop ring 2 reaches a certain strength, the valve 4 is closed, and the grouting is carried out through the drain pipe 3 and the grouting pipe at the same time. When the slurry reaches a certain strength, the upper steel pipe is cut off. Then use high-grade waterproof concrete for backfilling and maintenance, complete the plugging work of dewatering well 1, use steel bars to weld the water ring and steel plate, use double-sided welding to ensure that the welds are full, and use self-priming pumps to drain water during the plugging period. Pipe 3 is used for dewatering, and after the plugging is completed, it is used for grouting and recharging, so as to ensure the plugging effect of dewatering well 1.

In the utility model, a water stop ring 2 is arranged on the top of the dewatering well 1, and a water stop plate and a water stop glue 7 are arranged on both sides of the inner and outer sides to ensure the water stop effect. Then use it for grouting and recharging to ensure the plugging effect of the dewatering well 1.

Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should Various changes can be made in the above and in the details without departing from the scope of the present invention as defined by the claims of the present invention.

Claims (5)

1. a plugging device for dewatering wells in water-rich strata, is characterized in that: the described plugging device for dewatering wells in water-rich strata comprises dewatering wells, water stop rings, drain pipes, valves, water stop plates, Support ribs and water-stop glue, the dewatering well is buried in the self-waterproof concrete bottom plate, the outer well wall of the dewatering well is evenly connected with support ribs, the top of the dewatering well is connected with a water-stop ring, and the outer side of the dewatering well top is connected with the water-stop ring. There is a water-stop glue, a water-stop plate is arranged at the connection between the inner side of the top of the dewatering well and the water-stop ring, and a drain pipe extending to the bottom of the dewatering well is arranged on the top of the water-stop plate. 2 . The device for plugging a dewatering well in a water-rich stratum according to claim 1 , wherein the dewatering well is buried at 1/2 of the thickness of the self-waterproof concrete bottom plate. 3 . 3 . The device for plugging a dewatering well in a water-rich stratum according to claim 1 , wherein the drainage pipe is provided with a valve at the position on the top of the water stop plate. 4 . 4. The device for plugging a dewatering well in a water-rich stratum according to claim 1, wherein the part of the drain pipe located below the self-waterproof concrete bottom plate is evenly provided with through holes, and the through holes are evenly distributed. The drain pipe is wrapped with an anti-blocking net, and the anti-blocking net is wound and fixed with iron wire, and the anti-blocking net is made of nylon gauze. 5 . The device for plugging a dewatering well in a water-rich stratum according to claim 1 , wherein the water stop plate and the support bar are made of steel plates and steel bars, respectively. 6 .

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