CN219033265U - Precipitation device suitable for dark little foundation ditch - Google Patents

Abstract

The utility model discloses a precipitation device suitable for deep and small foundation pits, which relates to the field of foundation pit precipitation, and comprises: a dewatering pipe system for extracting groundwater contained in undisturbed soil below the foundation pit; a water pumping system positioned above the precipitation system; the centrifugal water pump is connected with the water outlet of the water pumping system, and has the beneficial effects that: the in-situ precipitation system is convenient to assemble on site, has no damage to the structure and high in precipitation efficiency, solves the problem of high precipitation construction difficulty at the deep and small foundation pit position, avoids large-area and continuous precipitation caused by partial deep and small foundation pit, and has high applicability to deep and small foundation pit construction with exposed water after excavation.

Description

Precipitation device suitable for dark little foundation ditch

Technical Field

The utility model relates to the field of foundation pit dewatering, in particular to a dewatering device suitable for deep and small foundation pits.

Background

In the foundation pit construction, in order to increase the stability of side slope and pit bottom, reduce the soil body moisture content of being excavated, be convenient for dig, or prevent gushing and take place, need carry out the precipitation to the foundation pit.

The precipitation depth set by the traditional precipitation system is often controlled according to the deepest elevation of the excavation, namely, the precipitation is controlled according to the excavation depth of the water pit.

Often the precipitation scope of precipitation system is wide, and precipitation engineering is great and precipitation effect is difficult to control, and traditional tube well precipitation need reserve the well head on the raft, has damaged the original structure of raft, carries out the well sealing again in the later stage.

Disclosure of Invention

The utility model aims at: in order to solve the problem, a precipitation device suitable for deep and small foundation pits is provided.

In order to achieve the above purpose, the present utility model provides the following technical solutions: precipitation device suitable for dark little foundation ditch includes:

a dewatering pipe system for extracting groundwater contained in undisturbed soil below the foundation pit;

a water pumping system positioned above the precipitation system;

the centrifugal water suction pump is connected with a water outlet of the water suction pipe system;

the dewatering pipe system comprises a DN60UPVC water pumping branch pipe, wherein a perforated DN200 galvanized steel pipe is inserted into the outer side of one end of the DN60UPVC water pumping branch pipe, which is deep into undisturbed soil, a non-woven fabric filter screen is wrapped on the outer side of the perforated DN200 galvanized steel pipe, the non-woven fabric filter screen is wrapped on the DN60UPVC water pumping branch pipe, the opening ends of the perforated DN200 galvanized steel pipe and the non-woven fabric filter screen are sealed with sealing clay, and the DN60UPVC water pumping branch pipe, the perforated DN200 galvanized steel pipe, the non-woven fabric filter screen and the sealing clay form the dewatering pipe system.

As still further aspects of the utility model: the pumping pipe system comprises a DN100UPVC pumping main pipe, one end of the DN100UPVC pumping main pipe is fixedly connected with a DN60UPVC pumping branch pipe, and the other end of the DN100UPVC pumping main pipe is fixedly connected with a centrifugal pumping pump.

As still further aspects of the utility model: and a mattress layer, a concrete mattress layer, a raft plate and a water collecting pit are sequentially arranged above the dewatering pipe system.

As still further aspects of the utility model: the DN200 galvanized steel pipe with holes, DN60UPVC water pumping branch pipes, non-woven fabric filter screens and sealing clay are provided with four groups.

As still further aspects of the utility model: the centrifugal water suction pump is arranged on one side of the water collecting pit.

Compared with the prior art, the utility model has the beneficial effects that:

through setting up precipitation pipe system, pumping pipe system, DN100UPVC pumping director, DN60UPVC pumping branch, centrifugal water pump, seal clay, foraminiferous DN200 galvanized steel pipe, non-woven fabrics filter screen, mattress bed course, concrete cushion and raft, provide a scene equipment facility, have not damaged, precipitation efficient normal position precipitation system to the structure, solve the problem that deep and small foundation ditch position precipitation construction degree of difficulty is big, avoided causing large tracts of land, sustainability precipitation because of local deep and small foundation ditch, have high suitability to the deep and small foundation ditch construction of the apparent water after the excavation.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the precipitation system A-A of the present utility model;

FIG. 3 is a cross-sectional view of the precipitation system A-A of the present utility model;

fig. 4 is a schematic diagram of a precipitation system according to the present utility model.

In the figure: 1. a precipitation pipe system; 2. a water pumping system; 3. DN100UPVC pumping master pipe; 4. DN60UPVC water pumping branch; 5. a centrifugal water pump; 6. sealing clay; 7. DN200 galvanized steel pipe with hole; 8. a non-woven fabric filter screen.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. 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 the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.

Referring to fig. 1 to 4, in an embodiment of the present utility model, a precipitation device suitable for a deep and small foundation pit includes: the water reducing system 1 is used for extracting groundwater contained in undisturbed soil below the foundation pit; the water pumping pipe system 2 is positioned above the water falling pipe system 1; the centrifugal water suction pump 5 is connected with the water outlet of the water suction pipe system 2, the water suction pipe system 2 is connected with the precipitation pipe system 1, the lower part of the raft board is pumped by the centrifugal water suction pump 5, a wellhead is not required to be reserved on the raft board, the original structure of the raft board is prevented from being damaged, and well sealing is performed in the later stage.

The dewatering pipe system 1 comprises a DN60UPVC water pumping branch pipe 4, wherein a DN200 galvanized steel pipe 7 with holes is inserted into the outer side of one end of the DN60UPVC water pumping branch pipe 4 penetrating into undisturbed soil, and the DN200 galvanized steel pipe 7 with holes is perforated by using galvanized steel pipes with the diameter of 200mm along the length direction with the interval of 300mm and 4 radial holes. The outside parcel of foraminiferous DN200 galvanized steel pipe 7 has non-woven fabrics filter screen 8, and non-woven fabrics filter screen 8 parcel is to DN60UPVC water pumping branch pipe 4, and the open end of foraminiferous DN200 galvanized steel pipe 7 and non-woven fabrics filter screen 8 is sealed to have and seals clay 6, the precipitation pipe system 1 is constituteed in DN60UPVC water pumping branch pipe 4, foraminiferous DN200 galvanized steel pipe 7, non-woven fabrics filter screen 8 and seal clay 6 are sealed, and foraminiferous DN200 galvanized steel pipe 7, DN60UPVC water pumping branch pipe 4, non-woven fabrics filter screen 8 and seal clay 6 are provided with four groups, prevent that later stage mud from permeating in the foraminiferous DN200 galvanized steel pipe 7.

The upper part of the dewatering pipe system 1 is sequentially provided with a mattress layer, a concrete mattress layer, a raft plate and a water collecting pit, the water pumping pipe system 2 comprises a DN100UPVC water pumping main pipe 3, one end of the DN100UPVC water pumping main pipe 3 is fixedly connected with a DN60UPVC water pumping branch pipe 4, the other end of the DN100UPVC water pumping main pipe 3 is fixedly connected with a centrifugal water pump 5, the centrifugal water pump 5 is arranged on one side of the water collecting pit, the centrifugal water pump 5 is started to start pumping groundwater in undisturbed soil below the water collecting pit, the groundwater enters a perforated DN200 galvanized steel pipe 7 through a non-woven fabric filter screen 8, and is pumped out by the DN60UPVC water pumping branch pipe 4 and the DN100UPVC water pumping main pipe 3 which are connected.

The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims (5)

1. Precipitation device suitable for dark little foundation ditch includes:

the water reducing system (1) is used for extracting groundwater contained in undisturbed soil below the foundation pit;

the water pumping pipe system (2) is positioned above the water falling pipe system (1);

a centrifugal water suction pump (5) is connected with a water outlet of the water suction pipe system (2);

the dewatering pipe system is characterized in that the dewatering pipe system (1) comprises a DN60UPVC water pumping branch pipe (4), a perforated DN200 galvanized steel pipe (7) is inserted into the outer side of one end of the DN60UPVC water pumping branch pipe (4) penetrating into undisturbed soil, a non-woven fabric filter screen (8) is wrapped on the outer side of the perforated DN200 galvanized steel pipe (7), the non-woven fabric filter screen (8) is wrapped on the DN60UPVC water pumping branch pipe (4), sealing clay (6) is sealed at the open ends of the perforated DN200 galvanized steel pipe (7) and the non-woven fabric filter screen (8), and the sealing clay (6) are sealed to form the dewatering pipe system (1).

2. The dewatering device suitable for deep and small foundation pits according to claim 1, wherein the water pumping pipe system (2) comprises a DN100UPVC water pumping main pipe (3), one end of the DN100UPVC water pumping main pipe (3) is fixedly connected with a DN60UPVC water pumping branch pipe (4), and the other end of the DN100UPVC water pumping main pipe (3) is fixedly connected with a centrifugal water pump (5).

3. The dewatering device suitable for deep and small foundation pits according to claim 1, wherein a mattress layer, a concrete mattress layer, a raft board and a water collecting pit are sequentially arranged above the dewatering pipe system (1).

4. The dewatering device suitable for deep and small foundation pits according to claim 1, wherein four groups of the perforated DN200 galvanized steel pipe (7), the DN60UPVC water pumping branch pipe (4), the non-woven fabric filter screen (8) and the sealing clay (6) are arranged.

5. A dewatering device for deep small foundation pits according to claim 1, characterized in that the centrifugal water pump (5) is mounted on one side of the pit.

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