CN102644291A

CN102644291A - Foundation pit precast concrete pipe immersed-tube precipitation structure and precipitation method

Info

Publication number: CN102644291A
Application number: CN2012101029953A
Authority: CN
Inventors: 张国胜; 盛克亚; 何永良; 梁列明; 梁汉荣; 周锡基
Original assignee: Guangdong Jinhuihua Group Co Ltd
Current assignee: Guangdong Jinhuihua Group Co Ltd
Priority date: 2012-04-10
Filing date: 2012-04-10
Publication date: 2012-08-22
Anticipated expiration: 2032-04-10
Also published as: CN102644291B

Abstract

The invention discloses a foundation pit precast concrete pipe immersed-tube precipitation structure and a precipitation method. In the precipitation structure and precipitation method, multiple broken stone layers are paved on the bottom layer of the concrete pipe so as to filter the sediment and the like at the bottom of the broken stone layers, and the sediment in the concrete pipe is diluted by flushing water into the concrete pipe through a water flushing pipe and then pumped out by a water pumping pipe and a submersible pump. The precipitation structure is simple, the precipitation construction method has a simple flow, and the construction cost of the foundation pit precipitation construction can be effectively reduced; and the precipitation structure and precipitation method disclosed by the invention are applied to the field of building construction.

Description

Foundation ditch precast concrete pipe immersed tube precipitation structure and precipitation method

Technical field

The present invention relates to the realm of building construction, particularly relate to a kind of building operations structure and reach the method for carrying out dewatering construction through this structure.

Background technology

In the excavation of foundation pit construction of construction work, for fear of seepage failure phenomenons such as generation quicksands, prevent that the soil body from caving in, satisfy foundation pit construction, must carry out precipitation to old foundation ditch and handle.

The success or not of foundation pit dewatering, the construction speed that has directly influenced engineering also concerns the safety of foundation ditch structure.Foundation pit dewatering job practices now commonly used is the tube well dewatering construction; The most methods of holing into well that adopt of this type of job practices, its construction period is longer relatively, and needs more rig; The operation of making is comparatively complicated, thereby makes the cost of foundation pit dewatering construction to reduce.

Summary of the invention

For addressing the above problem, the present invention provides a kind of more simple foundation pit dewatering structure and carries out the method that foundation pit dewatering is constructed through this structure.

The technical solution adopted for the present invention to solve the technical problems is:

A kind of foundation ditch precast concrete pipe immersed tube precipitation structure; Be included in some joint concrete pipe of overlapping placement in the foundation ditch; The bottom of concrete pipe is equipped with the several layers macadam; The top of the inherent macadam of concrete pipe is provided with submersible pump and links to each other with submersible pump stretches out the drinking-water pipe of foundation ditch, also is provided with the jet water spout that extends above the macadam in the concrete pipe.

Further as the improvement of technical scheme of the present invention, macadam comprises first macadam, second macadam and the 3rd macadam that is layed in the concrete pipe bottom, and second macadam is between first macadam and the 3rd macadam.

Further as the improvement of technical scheme of the present invention, the stone size in second macadam is less than the size of stone in first macadam and the 3rd macadam.

Further as the improvement of technical scheme of the present invention; The thickness of first macadam and the 3rd macadam is 10～30cm; The length of stone is 5～7cm in first macadam and the 3rd macadam, and the thickness of second macadam is 5～20cm, and the length of stone is 1～2cm in second macadam.

A kind ofly utilize above-mentioned foundation ditch precast concrete pipe immersed tube precipitation structure to carry out the method for dewatering construction, may further comprise the steps:

1) in foundation ditch, places a joint concrete pipe;

2) wash by water in concrete pipe through said jet water spout, and take the mud mixture in the concrete pipe away through submersible pump and drinking-water pipe;

3) said concrete pipe is placed a concrete pipe again on concrete pipe after sinking under the deadweight effect;

4) after concrete pipe no longer sinks, in concrete pipe, lay macadam;

5) water bottom submersible pump extraction concrete pipe.

Beneficial effect of the present invention: this precipitation structure and precipitation method are equipped with the several layers macadam at the bottom of concrete pipe; So that the silt of macadam bottom etc. is filtered; And through the jet water spout silt of dilution in the concrete pipe of in concrete pipe, wash by water, and through drinking-water pipe and submersible pump extraction silt, this precipitation is simple in structure; And the dewatering construction method flow process is simple, can effectively reduce the construction cost of foundation pit dewatering construction.

Description of drawings

Below in conjunction with accompanying drawing the present invention is described further:

Fig. 1 is an embodiment of the invention overall structure sketch map.

The specific embodiment

With reference to Fig. 1; The present invention is a kind of foundation ditch precast concrete pipe immersed tube precipitation structure; Be included in some joint concrete pipe 1 of overlapping placement in the foundation ditch; The bottom of concrete pipe 1 is equipped with several layers macadam 2, and the drinking-water pipe 4 that the top of concrete pipe 1 inherent macadam 2 is provided with submersible pump 3 and links to each other and stretch out foundation ditch with submersible pump 3 also is provided with the jet water spout 5 that extends macadam 2 tops in the concrete pipe 1.

1) in foundation ditch, places a joint concrete pipe 1;

2) wash by water in concrete pipe 1 through said jet water spout 5, and take the mud mixture in the concrete pipe 1 away through submersible pump 3 and drinking-water pipe 4;

3) said concrete pipe 1 is placed a concrete pipe 1 again on concrete pipe 1 after sinking under the deadweight effect;

4) after concrete pipe 1 no longer sinks, in concrete pipe 1, lay macadam 2;

5) extract the water of concrete pipe 1 bottom out through submersible pump 3.

This precipitation structure and precipitation method are equipped with several layers macadam 2 at the bottom of concrete pipe 1; So that silt of macadam 2 bottoms etc. is filtered; And through jet water spout 5 silt of dilution in the concrete pipe 1 of to concrete pipe 1 in, wash by water, and passing through drinking-water pipe 4 and submersible pump 3 extraction silts, this precipitation is simple in structure; And the dewatering construction method flow process is simple, can effectively reduce the construction cost of foundation pit dewatering construction.

As the preferred embodiment of the present invention, macadam 2 comprises that first macadam 21, second macadam 22 and the 3rd macadam 23, the second macadams 22 that are layed in concrete pipe 1 bottom are between first macadam 21 and the 3rd macadam 23.

As the preferred embodiment of the present invention, the stone size in second macadam 22 is less than the size of stone in first macadam 21 and the 3rd macadam 23.

As the preferred embodiment of the present invention; The thickness of first macadam 21 and the 3rd macadam 23 is 10～30cm; The length of stone is 5～7cm in first macadam 21 and the 3rd macadam 23, and the thickness of second macadam 22 is 5～20cm, and the length of stone is 1～2cm in second macadam 22.

Its some joint concrete pipe 1 inserting in the foundation ditch for the single-unit single-unit; Each saves concrete pipe 1 and under its deadweight effect, sinks, and in the process that concrete pipe 1 sinks, washes by water in past the concrete pipe 1 that does not stop through jet water spout 5; And carry out the extraction of silt through drinking-water pipe 4 and submersible pump 3 simultaneously; After treating that concrete pipe 1 sinks to certain depth, then can stop bath in concrete pipe 1, only swarm next water through sub-precipitation well shaft bottom in drinking-water pipe 4 and the submersible pump 3 extraction foundation ditches.

Certainly; The invention is not limited to above-mentioned embodiment; Those of ordinary skill in the art also can make equivalent variations or replacement under the prerequisite of spirit of the present invention, modification that these are equal to or replacement all are included in the application's claim institute restricted portion.

Claims

1. foundation ditch precast concrete pipe immersed tube precipitation structure; It is characterized in that: the some joint concrete pipe (1) that are included in overlapping placement in the foundation ditch; The bottom of said concrete pipe (1) is equipped with several layers macadam (2); The drinking-water pipe (4) that the top of the inherent macadam of said concrete pipe (1) (2) is provided with submersible pump (3) and links to each other and stretch out foundation ditch with submersible pump (3) also is provided with the jet water spout (5) that extends macadam (2) top in the said concrete pipe (1).

2. foundation ditch precast concrete pipe immersed tube precipitation structure according to claim 1; It is characterized in that: said macadam (2) comprises first macadam (21), second macadam (22) and the 3rd macadam (23) that is layed in concrete pipe (1) bottom, and said second macadam (22) is positioned between first macadam (21) and the 3rd macadam (23).

3. foundation ditch precast concrete pipe immersed tube precipitation structure according to claim 2 is characterized in that: the stone size in said second macadam (22) is less than the size of first macadam (21) and the interior stone of the 3rd macadam (23).

4. according to claim 2 or 3 described foundation ditch precast concrete pipe immersed tube precipitation structures; It is characterized in that: the thickness of said first macadam (21) and the 3rd macadam (23) is 10～30cm; The length of said first macadam (21) and the interior stone of the 3rd macadam (23) is 5～7cm; The thickness of said second macadam (22) is 5～20cm, and the length of the interior stone of said second macadam (22) is 1～2cm.

5. a method of utilizing claim 1 or 2 described foundation ditch precast concrete pipe immersed tube precipitation structures to carry out dewatering construction is characterized in that, may further comprise the steps:

1) in foundation ditch, places a joint concrete pipe (1);

2) wash by water in concrete pipe (1) through said jet water spout (5), and take the mud mixture in the concrete pipe (1) away through submersible pump (3) and drinking-water pipe (4);

3) said concrete pipe (1) is placed a concrete pipe (1) again on concrete pipe (1) after sinking under the deadweight effect;

4) after concrete pipe (1) no longer sinks, in concrete pipe (1), lay macadam (2);

5) water bottom submersible pump (3) extraction concrete pipe (1).