CN118958349A

CN118958349A - Local dewatering structures for elevator shafts or sump pits

Info

Publication number: CN118958349A
Application number: CN202411349802.3A
Authority: CN
Inventors: 马永智; 雷皓宇; 宋鹏辉; 汪葭玮; 吕振宇
Original assignee: China 22MCC Group Corp Ltd
Current assignee: China 22MCC Group Corp Ltd
Priority date: 2024-09-26
Filing date: 2024-09-26
Publication date: 2024-11-15

Abstract

The invention relates to the technical field of precipitation construction, in particular to a local precipitation structure for an elevator shaft or a water collecting pit. The elevator shaft or the sump pit bottom is provided with rubble layer, bed course and foundation layer from bottom to top respectively, and rubble layer middle part indent forms the sump pit, and the foundation layer lower part vertically is provided with the support steel pipe, and the bottom downwardly extending of support steel pipe is to the sump pit top, has laid waterproof material in the bed course, and waterproof material is close to support steel pipe department and upwards lays along support steel pipe outer wall between support steel pipe and foundation layer, is provided with the water pump in the sump pit, is connected with the water pipe on the play water end of water pump, and the foundation layer in the support steel pipe inner chamber is outwards discharged in the water pipe top penetration. The elevator shaft and water collecting pit construction machine has the advantages of simple and easy structure, convenient construction and low cost, can greatly ensure the quality of the elevator shaft and the water collecting pit, greatly improve the construction efficiency, shorten the construction period and save manpower.

Description

Local precipitation structure for elevator shaft or water collecting pit

Technical Field

The invention relates to the technical field of precipitation construction, in particular to a local precipitation structure for an elevator shaft or a water collecting pit.

Background

With the development of construction technology in recent years, building foundation pits are continuously extended downwards. The groundwater level is higher and higher along with the increase of the foundation excavation depth, and the water lowering and draining of the deep foundation pit is particularly important in order to create an anhydrous construction environment after the deep foundation pit is excavated. Therefore, the effective water-lowering and draining of the elevator shaft or the water collecting pit is a key for guaranteeing the waterproof performance of the foundation slab and the construction quality of the foundation engineering. General precipitation mode can not drop the water level below basement raft, and sump position is because of the elevation is lower, and water pressure is great, is difficult to guarantee the drainage effect, can't guarantee foundation ditch bottom moisture content, influences waterproof construction, and the construction is complicated, has reduced construction quality, has delayed the engineering progress.

Disclosure of Invention

The present invention aims to solve the above problems, thereby providing a local dewatering structure for an elevator shaft or pit that effectively drains water.

The invention solves the problems, and adopts the following technical scheme:

To the local precipitation structure of elevator shaft or sump pit, elevator shaft or sump pit bottom is provided with gravel layer, bed course and foundation layer from bottom to top respectively, gravel layer middle part indent forms the sump pit, the foundation layer lower part vertically is provided with the support steel pipe, the bottom downwardly extending of support steel pipe to the sump pit top, waterproof material has been laid in the bed course, waterproof material is close to support steel pipe department and upwards lays between support steel pipe and foundation layer along support steel pipe outer wall, be provided with the water pump in the sump pit, be connected with the water pipe on the play water end of water pump, the foundation layer outside discharge in the support steel pipe inner chamber is run through on the water pipe top.

Compared with the prior art, the invention adopting the technical scheme has the outstanding characteristics that:

The solid and effective external support is provided through the support steel pipe, so that the influence of lateral pressure on a precipitation system is reduced; the water pump is operated to pump water, maintain the dewatering water level, the water pipe is connected with the water pump, underground water is conveyed to an effective water outlet or water storage position to be discharged or stored for standby.

Preferably, the invention further adopts the technical scheme that:

further, the side wall of the precipitation pit is provided with a sand-free filter tube, and the top of the sand-free filter tube is inserted into the lower part of the inner cavity of the supporting steel tube and is propped against the foundation layer.

Further, the bottom periphery of supporting steel pipe is provided with the lower locating plate that laminates with the rubble layer.

Further, an outer water stop ring and an inner water stop ring are respectively arranged on the inner side and the outer side of the top of the supporting steel pipe.

Drawings

FIG. 1 is a schematic cross-sectional view of an embodiment of the present invention;

FIG. 2 is a schematic view of the structure of FIG. 1A in a partially enlarged manner;

marked in the figure as: the stone layer 1, the cushion layer 2, the base layer 3, the supporting steel pipe 4, the waterproof material 5, the water pump 6, the water pipe 7, the sand-free filter pipe 8, the lower positioning plate 9, the outer water stop ring 10, the inner water stop ring 11 and the dewatering pit 12.

Detailed Description

The invention is further described below in connection with the following examples which are provided for the purpose of better understanding of the present invention and are, therefore, not to be construed as limiting the scope of the invention.

To the local precipitation structure of elevator shaft or sump pit, elevator shaft or sump pit bottom is provided with gravel layer 1 from bottom to top respectively, bed course 2 and foundation layer 3, the indent forms the precipitation pit 12 in the middle part of gravel layer 1, foundation layer 3 lower part vertically is provided with support steel pipe 4, the bottom downwardly extending of support steel pipe 4 reaches precipitation pit 12 top, waterproof material 5 has been laid in the bed course 2, waterproof material 5 is close to support steel pipe 4 department and upwards lays between support steel pipe and foundation layer 3 along support steel pipe 4 outer wall, be provided with water pump 6 in the precipitation pit 12, be connected with water pipe 7 on the play water end of water pump 6, the outside discharge of foundation layer 3 in the inner chamber of support steel pipe 4 is run through on water pipe 7 top.

Further, the side wall of the precipitation pit 12 is provided with a sand-free filter tube 8, and the top of the sand-free filter tube 8 is inserted into the lower part of the inner cavity of the support steel tube 4 and is propped against the foundation layer 3 for filtering impurities in underground water quality so as to prevent the normal operation of the water pump 6 from being influenced and ensure the effective operation of a precipitation system.

Further, the bottom periphery of the support steel pipe 4 is provided with a lower locating plate 9 attached to the gravel layer 3, and the lower locating plate 9 is a steel plate with the thickness of 3mm and is welded with the support steel pipe 4, so that the support steel pipe 4 is prevented from being shifted or tilted.

Further, the outer water stop ring 10 and the inner water stop ring 11 are respectively arranged on the inner side and the outer side of the top of the support steel pipe 4, so that the water seepage phenomenon after plugging is prevented.

The foregoing description of the preferred embodiments of the invention is not intended to limit the scope of the claims, but rather to cover all equivalent modifications within the scope of the present invention as defined by the appended claims.

Claims

1. A local precipitation structure for an elevator shaft or a sump, characterized in that: a gravel layer, a cushion layer and a foundation layer are arranged from bottom to top at the bottom of the elevator shaft or the sump, the middle part of the gravel layer is concave to form a precipitation pit, a supporting steel pipe is longitudinally arranged at the lower part of the foundation layer, the bottom end of the supporting steel pipe extends downward to the top of the precipitation pit, a waterproof material is laid in the cushion layer, and the waterproof material is laid upward along the outer wall of the supporting steel pipe between the supporting steel pipe and the foundation layer near the supporting steel pipe, a water pump is arranged in the precipitation pit, a water pipe is connected to the water outlet of the water pump, and the top end of the water pipe passes through the foundation layer in the inner cavity of the supporting steel pipe to discharge outward.

2. The local precipitation structure for an elevator shaft or a sump according to claim 1 is characterized in that a sandless filter pipe is provided on the side wall of the precipitation pit, and the top of the sandless filter pipe is inserted into the lower part of the inner cavity of the supporting steel pipe and abuts against the foundation layer.

3. The local precipitation structure for an elevator shaft or a sump according to claim 1 is characterized in that a lower positioning plate that fits the gravel layer is provided on the outer periphery of the bottom of the supporting steel pipe.

4. The local precipitation structure for an elevator shaft or a sump according to claim 1 is characterized in that an outer water stop ring and an inner water stop ring are respectively provided on the inner and outer sides of the top of the supporting steel pipe.