CN216689420U - Excavation system of deep foundation pit - Google Patents

Abstract

The utility model provides an excavation system of a deep foundation pit, which comprises a diaphragm wall, a water storage tank, a high-pressure water pump, a high-pressure water gun, a slurry pump and a slurry tank, wherein the diaphragm wall is arranged around the foundation pit to be excavated; the water storage tank is connected with the high-pressure water pump through a pipeline; the water inlet of the high-pressure water pump is connected with the water storage tank through a pipeline, and the water outlet of the high-pressure water pump is connected with the high-pressure water gun through a pipeline; the high-pressure water gun is connected with the water outlet of the high-pressure water pump through a pipeline; pipelines are connected to the water inlet and the water outlet of the slurry pump, the pipeline port connected with the water inlet extends into the foundation pit, and the pipeline connected with the water outlet extends into the sludge collecting pool; the mud collecting pool is arranged outside the area of the foundation pit to be dug. The construction equipment is simple, excessive personnel investment is not needed, the digging efficiency of the deep foundation pit can be effectively improved, the construction cost is reduced, and the construction method has high practical application value.

Description

Excavation system of deep foundation pit

Technical Field

The utility model relates to the field of building construction, in particular to an excavation system of a deep foundation pit.

Background

At present, in the earthwork construction process of a deep foundation pit, a backhoe excavator is generally adopted to dig in the foundation pit, then the abandoned soil dug to establish the foundation pit is lifted out to an automobile outside the foundation pit by using a tower crane, the automobile on the ground is transported out of the field, and finally the backhoe excavator is lifted out from the dug foundation pit by a tower crane. However, in the actual operation process, supports are required to be arranged between the underground diaphragm walls around the foundation pit, the arranged supports are generally dense, and in order to prevent the backhoe from interfering with the supports, a small backhoe must be used for excavating the foundation pit. Therefore, the excavation time of the foundation pit is prolonged, and the construction efficiency of the foundation pit is affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an excavation system for a deep foundation pit, which aims to solve the problem that the existing backhoe excavator is poor in foundation pit excavation efficiency.

The purpose of the utility model is realized as follows: an excavation system for a deep foundation pit, comprising:

the underground diaphragm wall is a continuous reinforced concrete wall built underground and is arranged around a foundation pit to be excavated so as to play roles in intercepting, preventing seepage and retaining water for the foundation pit;

the water storage tank is connected with the high-pressure water pump through a pipeline and used for providing a pumping water source for the high-pressure water pump so as to impact earthwork in the enclosed area of the diaphragm wall;

the water inlet of the high-pressure water pump is connected with the water storage tank through a pipeline, and the water outlet of the high-pressure water pump is connected with a high-pressure water gun through a pipeline and used for pumping water in the water storage tank and converting the water pumped from the water storage tank into high-pressure impact water;

the high-pressure water gun is connected with a water outlet of the high-pressure water pump through a pipeline and used for converting high-pressure impact water pumped by the high-pressure water pump into a high-pressure water column, and a constructor controls the impact direction of the high-pressure water column through the high-pressure water gun so that the high-pressure water column impacts earthwork in the area enclosed by the diaphragm wall and impacts the earthwork into slurry;

the mud pump, connect with the pipeline on its water inlet and water outlet, the pipeline port connected to water inlet stretches into the foundation ditch, the pipeline connected to water outlet stretches into the mud collecting pool, in order to suck the mud in the foundation ditch, and convey the mud sucked to the mud collecting pool through the pipeline; and

and the mud collecting pool is arranged outside the foundation pit area to be excavated and used for collecting the mud pumped by the mud pump.

And the high-pressure water gun is provided with a flow control switch for adjusting the size of the high-pressure water column so as to change the impact force of the high-pressure water column.

When the utility model is used, the high-pressure water columns are sprayed between the diaphragm walls surrounding the foundation pit, earthwork between the diaphragm walls is impacted into flowable slurry, and the slurry is pumped out by the slurry pump, so that the pit slot of the foundation pit is formed in the surrounding area of the diaphragm walls. The utility model can quickly realize the earthwork excavation and transportation in the area surrounded by the diaphragm wall, and the excavation speed and the quality of the foundation pit are superior to those of the excavation quality of the traditional machine. In addition, the equipment used by the utility model has low investment cost and does not need other huge construction equipment. The method is simple to operate, does not need excessive personnel allocation, and does not influence the construction of other surrounding projects.

Drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure: 1. a mud collecting pool; 2. a slurry pump; 3. earthwork; 4. a high pressure water gun; 5. a high pressure water pump; 6. a water storage tank; 7. and (4) connecting the ground with the wall.

Detailed Description

As shown in fig. 1, the utility model comprises a diaphragm wall 7, a water storage tank 6, a high-pressure water pump 5, a high-pressure water gun 4, a mud pump 2 and a mud collecting tank 1, wherein the diaphragm wall 7 is a continuous reinforced concrete wall built underground and used for surrounding a foundation pit to be excavated and playing roles of intercepting, preventing seepage and retaining water for the foundation pit.

The water storage tank 6 is connected with the high-pressure water pump 5 through a pipeline and used for providing a pumping water source for the high-pressure water pump 5 so as to impact earthwork in the enclosed area of the diaphragm wall 7. The water inlet of the high-pressure water pump 5 is connected with the water storage tank through a pipeline, and the water outlet of the high-pressure water pump 5 is connected with the high-pressure water gun 4 through a pipeline and used for pumping water in the water storage tank 6 so as to change the water pumped from the water storage tank 6 into high-pressure impact water. The high-pressure water gun 4 is connected with a water outlet of the high-pressure water pump 5 through a pipeline and used for converting high-pressure impact water pumped by the high-pressure water pump 5 into a high-pressure water column, so that a constructor controls the impact direction of the high-pressure water column through the high-pressure water gun, the high-pressure water column impacts earthwork in the enclosed area of the diaphragm wall 7, and the earthwork is impacted into slurry.

The water inlet and the water outlet of the mud pump 2 are connected with pipelines, the pipeline connected to the water inlet of the mud pump 2 extends into a foundation pit enclosed by the ground connecting wall 7 to pump mud in the foundation pit, and the pipeline connected to the water outlet of the mud pump 2 extends into the mud collecting pool 1 to convey the pumped mud to the mud collecting pool.

The mud collecting pool 1 is arranged outside a foundation pit area to be excavated and used for collecting mud pumped by the mud pump 2.

The high-pressure water gun 4 is provided with a flow control switch for adjusting the size of a high-pressure water column sprayed out of the high-pressure water gun 4 so as to change the impact force of the high-pressure water column.

Claims (2)

1. An excavation system for a deep foundation pit, comprising:

the underground diaphragm wall is a continuous reinforced concrete wall built underground and is arranged around a foundation pit to be excavated so as to play roles in intercepting, preventing seepage and retaining water for the foundation pit;

the water storage tank is connected with the high-pressure water pump through a pipeline and used for providing a pumping water source for the high-pressure water pump so as to impact earthwork in the enclosed area of the diaphragm wall;

the water inlet of the high-pressure water pump is connected with the water storage tank through a pipeline, and the water outlet of the high-pressure water pump is connected with a high-pressure water gun through a pipeline and used for pumping water in the water storage tank and converting the water pumped from the water storage tank into high-pressure impact water;

the high-pressure water gun is connected with a water outlet of the high-pressure water pump through a pipeline and used for converting high-pressure impact water pumped by the high-pressure water pump into a high-pressure water column, and a constructor controls the impact direction of the high-pressure water column through the high-pressure water gun so that the high-pressure water column impacts earthwork in the area enclosed by the diaphragm wall and impacts the earthwork into slurry;

the mud pump, connect with the pipeline on its water inlet and water outlet, the pipeline port connected to water inlet stretches into the foundation ditch, the pipeline connected to water outlet stretches into the mud collecting pool, in order to suck the mud in the foundation ditch, and convey the mud sucked to the mud collecting pool through the pipeline; and

and the mud collecting pool is arranged outside the foundation pit area to be excavated and used for collecting the mud pumped by the mud pump.

2. The excavation system of a deep foundation pit according to claim 1, wherein the high pressure water gun is provided with a flow control switch for adjusting the size of the high pressure water column to change the impact force of the high pressure water column.

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