CN219386372U - Dewatering well closing device in foundation pit - Google Patents

Abstract

The utility model discloses a dewatering well sealing device in a foundation pit, which is plugged at the top of a well pipe in a dewatering well; the top of the well pipe is positioned below the top surface of the soil body at the bottom of the foundation pit; comprises a sleeve, a top cover and a plugging plate; the sleeve is sleeved on the top of the well pipe; the top cover is welded on the inner wall of the sleeve, and the top cover is blocked at the top of the well pipe; the top cover is provided with a through hole for pumping water; a nut is welded at the through hole, and a bolt is connected in the nut in a threaded manner; a water stop plate is arranged on the outer side wall of the top of the sleeve in the circumferential direction, and the top surface of the water stop plate is flush with the upper end of the sleeve; the plugging plate is plugged at the upper port of the sleeve, and the outer edge of the plugging plate is fixedly connected with the water stopping plate; concrete is filled between the plugging plate and the top cover to solve the plugging problem of the dewatering well.

Description

Dewatering well closing device in foundation pit

Technical Field

The utility model belongs to a dewatering well plugging device, and particularly relates to a dewatering well plugging device in a foundation pit.

Background

In the construction of south building, because the groundwater level is higher, especially when reaching the rainy period, need rational arrangement precipitation well before carrying out foundation ditch earthwork excavation, reduce the water level in the foundation ditch and excavate, but because the foundation ditch area is big and the water level is high, the precipitation well quantity of arranging is very much, leads to the precipitation well to need pass structure foundation slab and carry out the precipitation, just can guarantee construction. Before reaching the floor that the design requirement was under construction again, the precipitation well is continuous to be fallen water, reaches the design requirement after, seals the precipitation well, along with the completion of most precipitation well seals, and several remaining precipitation wells seal difficulty at last, because the water pressure increases greatly, groundwater can outwards spray water from the precipitation well, and the risk that the shutoff is not thoroughly leaked is easily existence to the confined precipitation well at last because the water pressure is great.

Disclosure of Invention

The utility model provides a dewatering well sealing device in a foundation pit, and aims to solve the problem of plugging of a dewatering well.

In order to achieve the purpose, the utility model provides a dewatering well sealing device in a foundation pit, which is used for sealing the top of a well pipe in a dewatering well; the top of the well pipe is positioned below the top surface of the soil body at the bottom of the foundation pit; comprises a sleeve, a top cover and a plugging plate; the sleeve is sleeved on the top of the well pipe; the top cover is welded on the inner wall of the sleeve, and the top cover is blocked at the top of the well pipe; the top cover is provided with a through hole for pumping water; a nut is welded at the through hole, and a bolt is connected in the nut in a threaded manner; a water stop plate is arranged on the outer side wall of the top of the sleeve in the circumferential direction, and the top surface of the water stop plate is flush with the upper end of the sleeve; the plugging plate is plugged at the upper port of the sleeve, and the outer edge of the plugging plate is fixedly connected with the water stopping plate; and concrete is filled between the plugging plate and the top cover.

Further, a foundation cushion layer is poured at the bottom of the foundation pit and around the sleeve; the length of the sleeve at the lower part of the foundation mat layer is not less than 300mm.

Further, a waterproof layer is arranged on the outer wall of the sleeve, and the lower end of the waterproof layer extends to the top surface of the foundation mat layer; the waterproof layer top is provided with stagnant water putty, and the upper portion of stagnant water putty covers in waterproof layer and sheathed tube seam crossing.

Further, the length of the sleeving part of the sleeve and the well pipe is not less than 100mm.

Further, a gasket is arranged between the bolt and the nut.

Further, a water stop ring is arranged on the outer side of the sleeve.

Further, micro-expansion concrete is arranged above the plugging plate.

Compared with the prior art, the utility model has the beneficial effects that: the well pipe is plugged through the top cover, a water pipe of the water pump penetrates through the through hole, water is pumped into the well pipe through the water pump, the water pipe is removed when the liquid level is lower than the top cover, the through hole of the top cover is plugged through the bolt, and a first layer of plugging is carried out on the well pipe; the second layer of blocking is carried out on the well pipe through the blocking plate, and micro-expansion concrete is arranged on the blocking plate, so that water leakage in the well pipe is further prevented.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

Description of the drawings: 1. a base cushion layer; 2. a well pipe; 3. a sleeve; 4. a top cover; 5. a through hole; 6. a water stop plate; 7. a nut; 8. a bolt; 9. a plugging plate; 10. a waterproof layer; 11. water stopping putty; 12. and a water stop ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the patent.

The utility model relates to a dewatering well sealing device in a foundation pit, which is used for sealing the top of a well pipe in a dewatering well by combining with a drawing; the top of the well pipe 2 is positioned below the top surface of the soil body at the bottom of the foundation pit; the sealing device comprises a sleeve 3, a top cover 4 and a plugging plate 9; the sleeve 3 is sleeved on the top of the well pipe 2; the top cover 4 is welded on the inner wall of the sleeve 3, and the top cover 4 is plugged at the top of the well pipe 2; the top cover 4 is provided with a through hole 5 for pumping water; a nut 7 is welded at the through hole 5, and a bolt 8 is connected in the nut 7 in a threaded manner; a water stop plate 6 is arranged on the outer side wall of the top of the sleeve 3 along the circumferential direction, and the top surface of the water stop plate 6 is flush with the upper end of the sleeve 3; the plugging plate 9 is plugged at the upper port of the sleeve 3, the outer edge of the plugging plate 9 is fixedly connected with the water stop plate 6, the well pipe 2 is a cement pipe or a corrugated pipe, the sleeve 3 is a steel pipe, and the sleeve 3 and the water stop plate 6 are fixedly welded; concrete is filled between the plugging plate 9 and the top cover 4 to prevent water in the well pipe 2 from leaking.

A foundation cushion layer 1 is poured at the bottom of the foundation pit and around the sleeve 3; the length of the sleeve 3 positioned below the foundation mat layer 1 is not less than 300mm.

A waterproof layer 10 is arranged on the outer wall of the sleeve 3, and the lower end of the waterproof layer 10 extends to the top surface of the foundation mat layer 1; a water-stopping putty 11 is arranged above the waterproof layer 10, and the upper part of the water-stopping putty 11 covers the joint of the waterproof layer 10 and the sleeve 3.

The length of the sleeving part of the sleeve 3 and the well pipe 2 is not less than 100mm.

A water stop ring 12 is arranged outside the sleeve 3.

And micro-expansion concrete is arranged above the plugging plate 9.

In the embodiment, the bottom surface of the top cover 4 is propped against the top surface of the well pipe 2; pumping water in the well pipe 2 by the water pump through the through hole 5, immediately removing the water pipe when the liquid level in the well pipe 2 is lower than the top cover 4, and plugging the through hole 5; a nut 7 is welded and connected at the through hole 5, the bottom surface of the nut 7 is welded on the top surface of the top cover 4, and the bolt 8 is in threaded connection with the nut 7 to seal the through hole 5; a gasket is arranged between the bolt 8 and the nut 7.

According to the utility model, the top cover 4 and the plugging plate 9 are used for plugging the well pipe 2 in two layers, concrete is paved around the sleeve pipe 3, and micro-expansion concrete is arranged on the plugging plate 9, so that the last few wells with high water pressure are plugged, and water in the well pipe 2 is prevented from seeping out of the sleeve pipe 3.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims (7)

1. A dewatering well sealing device in a foundation pit, which is plugged at the top of a well pipe in a dewatering well; the top of the well pipe (2) is positioned below the top surface of the soil body at the bottom of the foundation pit; the method is characterized in that: comprises a sleeve (3), a top cover (4) and a plugging plate (9); the sleeve (3) is sleeved on the top of the well pipe (2); the top cover (4) is welded on the inner wall of the sleeve (3), and the top cover (4) is blocked at the top of the well pipe (2); a through hole (5) for pumping water is arranged on the top cover (4); a nut (7) is welded at the through hole (5), and a bolt (8) is connected in the nut (7) in a threaded manner; a water stop plate (6) is arranged on the outer side wall of the top of the sleeve (3) along the circumferential direction, and the top surface of the water stop plate (6) is flush with the upper end of the sleeve (3); the plugging plate (9) is plugged at the upper port of the sleeve (3), and the outer edge of the plugging plate (9) is fixedly connected with the water stop plate (6); concrete is filled between the plugging plate (9) and the top cover (4).

2. The foundation pit dewatering well closing device of claim 1, wherein: a foundation cushion layer (1) is poured at the bottom of the foundation pit and around the sleeve (3); the length of the sleeve (3) positioned below the foundation mat layer (1) is not less than 300mm.

3. The foundation pit dewatering well closing device of claim 2, wherein: a waterproof layer (10) is arranged on the outer wall of the sleeve (3), and the lower end of the waterproof layer (10) extends to the top surface of the foundation mat layer (1); the waterproof layer (10) top is provided with stagnant water putty (11), and the upper portion of stagnant water putty (11) covers the seam crossing of waterproof layer (10) and sleeve pipe (3).

4. The foundation pit dewatering well closing device of claim 1, wherein: the length of the sleeving part of the sleeve (3) and the well pipe (2) is not less than 100mm.

5. The foundation pit dewatering well closing device of claim 1, wherein: a gasket is arranged between the bolt (8) and the nut (7).

6. The foundation pit dewatering well closing device of claim 1, wherein: a water stop ring (12) is arranged on the outer side of the sleeve (3).

7. The foundation pit dewatering well closing device of claim 1, wherein: and micro-expansion concrete is arranged above the plugging plate (9).