CN106013045A

CN106013045A - Fast drainage method for shallow soil body

Info

Publication number: CN106013045A
Application number: CN201610379534.9A
Authority: CN
Inventors: 张禹
Original assignee: Cabr Foundation Engineering Co Ltd
Current assignee: Cabr Foundation Engineering Co Ltd
Priority date: 2016-06-01
Filing date: 2016-06-01
Publication date: 2016-10-12

Abstract

The invention relates to a fast drainage method for a shallow soil body. The fast drainage method for the shallow soil body is characterized by including the following steps that firstly, a trench is excavated in a reinforcement region, and a drainage plate horizontally arranged in the trench direction is laid in the trench; one end of the drainage plate is connected with a well point pipe in a sealed manner through a variable-diameter connector so that an integrated well point plastic drainage pipe can be formed, and the outer end of the well point pipe is exposed out of the trench; and finally, the outer end of the well point pipe is connected with a vacuumizing header pipe through a connecting pipe, the vacuumizing header pipe is connected with a vacuum pump to start vacuumizing, and fast water lowering of the shallow soil body is achieved. The fast drainage method for the shallow soil body has the beneficial effects of being easy to operate, low in cost and good in construction effect.

Description

Shallow-layer soil body Quick drainage method

Technical field

The present invention relates to a kind of Treatment Methods of Soft Ground, particularly relate to a kind of shallow-layer soil body Quick drainage method.

Background technology

Specifying according to " Code for design of building " (GB5007-2011) 7.1.1, soft foundation means the ground being mainly made up of mud, muck soil, rinse fill, miscellaneous fill or other high-compressibility soil layer.Before soft foundation carries out construction, need first soft foundation to be carried out consolidation process.

The first step of traditional basement process is levelling of the land, is then treating that reinforcing area surrounding excavates gutter draining；For the place that some operating modes are complicated, simple excavation gutter draining is oversize due to the drainage path long natural drainage efficiency the lowest time.

Summary of the invention

It is an object of the invention to overcome above-mentioned deficiency, it is provided that a kind of simple to operate, with low cost, shallow-layer soil body Quick drainage method that construction effect is good.

The object of the present invention is achieved like this:

Compared with prior art, the invention has the beneficial effects as follows:

1, simple to operate, speed of application is fast, and construction unit can complete in one day to excavate groove, lay integral type well point plastic strip pipe, backfilling working；

2, changing nature seepage flow draining is to force vacuum drainage, and speed is fast, efficiency is high；

3, vacuum-dewatering good sealing effect, in the well-point pipe underground length of integral type well point plastic strip pipe or depth bounds, the soil body is seal, good sealing effect；

4, the well-point pipe of integral type well point plastic strip can be pulled out, and the degraded of plastic strip filter membrane, central layer are retained the soil body and played level to reinforced action；

5, cheap, excavation cost is the highest, integral type well point plastic strip level interval about 10 ~ 30 meters, saves tubing and does not reduce drainage effect simultaneously.

Therefore the present invention has advantage simple to operate, with low cost, that construction effect is good.

Accompanying drawing explanation

Fig. 1 is the elevation of embodiments of the invention one.

Fig. 2 is the top view at the draining board of Fig. 1.

Fig. 3 is the A-A sectional view of Fig. 1.

Fig. 4 is the elevation of embodiments of the invention two.

Fig. 5 is the top view at the draining board of Fig. 4.

Fig. 6 is the B-B sectional view of Fig. 4.

Fig. 7 is the sectional view of draining board.

Fig. 8 is the axonometric chart of draining board.

Wherein:

Draining board 1, central layer 1.1, main gusset 1.11, secondary gusset 1.12, filter membrane 1.2, drainage channel 1.3

Reducer union 2

Well-point pipe 3

Connecting tube 4

Evacuation house steward 5

Vacuum pump 6.

Detailed description of the invention

See Fig. 1 ~ Fig. 8, for backfilling ground or subsoil, the shallow-layer soil body Quick drainage method that the present invention relates to, it comprises the following steps:

Step one, reinforcing area excavation groove, gash depth 3 ~ 5m, groove pitch 10 ~ 30m

Yellow ground or the gravel filtering material of 5 ~ 10cm thickness 30cm width laid by step 2, groove bottom；

The draining board horizontally disposed along groove direction is laid in step 3, groove；

Step 4, using reducer union to be tightly connected well-point pipe to form integral type well point plastic strip pipe in one end of draining board, the outer end of well-point pipe is exposed outside groove；

Step 5, the yellow ground laying 5 ~ 10cm thickness 30cm width on draining board surface or gravel filtering material, then trench backfill clay seals, and as required, can lay multilamellar integral type well point plastic strip pipe；

Step 6, the outer end of well-point pipe use connecting tube to connect evacuation house steward, and evacuation house steward connects vacuum pump and starts evacuation, it is achieved the fast rainfall of the shallow-layer soil body.

Wherein:

Draining board 1 includes central layer 1.1 and the filter membrane 1.2 of central layer 1.1 periphery of inside, drainage channel 1.3 is formed between described central layer 1.1 and filter membrane 1.2, described central layer 1.1 is made for non-degradable material or difficult degradation material, and described filter membrane 1.2 is made for degradation material.

Preferred as one, central layer 1.1 is made for plastic material, and filter membrane 1.2 is made for Caulis et Folium Lini material.

Preferred as one, central layer 1.1 includes the main gusset 1.11 of a lateral arrangement and the many longitudinally spaced secondary gussets 1.12 being arranged in before and after main gusset 1.11, and main ribs plate 1.11, the space formed between secondary gusset 1.12 and filter membrane 1.2 are drainage channel 1.3.

Draining board 1 is in the soil body, as time goes by, owing to filter membrane 1.2 uses degradation material to make, filter membrane 1.2 realizes fast degradation, filter membrane 1.2 degraded after in ground the most remaining central layer 1.1, the soil in ground can fill former filter membrane 1.2 and the space of former drainage channel 1.3 so that soil fits tightly with central layer 1.1, therefore the most there is not space and make ground continue sedimentation in central layer 1.1 in ground, but also serves the effect of reinforcement.

The tail end of described draining board 1 is provided with draining board end socket, and draining board end socket uses plastic adhesive tape paper to be wrapped to form.

Described connecting tube 4 is wired hose, and connecting tube 4 includes the spiral wire of flexible pipe and Lining Hose.

Described well-point pipe 3 is pvc pipe, PPR pipe, and well-point pipe 3 and connecting tube 4 junction are wrapped up by diaphragm seal or steel wire winding, after using diaphragm seal parcel, produces negative-pressure dense sealer when evacuation and is inhaled tighter and tighter.Well-point pipe 3 can also use with connecting tube 4 as wired hose so that well-point pipe 3 and connecting tube 4 form integrative-structure.

Embodiment one

Seeing Fig. 1 ~ Fig. 2, intend disposal field and backfilled 3 meters of thick clays, water content is higher, it is necessary to leading draining could launch subsequent construction；

Step one, reinforcing area excavation groove, gash depth 3m to original place table, groove pitch 25m, groove width 0.8m；Groove right-hand member stays about the 4 meters soil bodys not dig, it is ensured that draining board right-hand member is air tight, and left side is dug through and is easy to lay well-point pipe and lifts one's head connection vacuum pump

The yellow ground of 5cm thickness 30cm width laid by step 2, groove bottom；Groove left section 5 meters long does not lay yellow ground

Step 4, using reducer union to be tightly connected 5.1m well-point pipe at the left end of draining board to form integral type well point plastic strip pipe, well-point pipe exposes outer about the 10cm of groove to be easy to connect, and well-point pipe and draining board are that yi word pattern is arranged；

Step 5, the yellow ground laying 5 ~ 10cm thickness 30cm width on draining board surface or gravel filtering material, then trench backfill clay seals；

Step 6, the integral type well point plastic strip pipe section of being unearthed use connecting tube to connect evacuation house steward, and evacuation house steward connects vacuum pump and starts evacuation, the fast rainfall completing the shallow-layer soil body in 1 ~ 3 day.

Embodiment two

Seeing Fig. 3 and Fig. 4, plan disposal field is subsoil, and topsoil body water content is higher

Step one, reinforcing area excavation groove, gash depth 4m, groove pitch 15m, groove width 1m；Groove right-hand member stays about the 4 meters soil bodys not dig, it is ensured that draining board right-hand member is air tight, and groove left end also stays the part soil body not dig,

The yellow ground of 8cm thickness 30cm width laid by step 2, groove bottom；

The plastic draining board horizontally disposed along groove direction is laid in step 3, groove；

Step 4, using reducer union to be tightly connected 4.1m well-point pipe at the left end of draining board to form integral type well point plastic strip pipe, well-point pipe exceeds to be easy to about trench top 10cm connect, well-point pipe and draining board is L-shaped is arranged vertically；

Claims

1. a shallow-layer soil body Quick drainage method, it is characterised in that it comprises the following steps:

First, reinforcing area excavation groove, then lay the draining board horizontally disposed along groove direction in groove；Using in one end of draining board reducer union to be tightly connected well-point pipe and form integral type well point plastic strip pipe, the outer end of well-point pipe is exposed outside groove；The outer end of last well-point pipe uses connecting tube to connect evacuation house steward, and evacuation house steward connects vacuum pump and starts evacuation, it is achieved the fast rainfall of the shallow-layer soil body.

A kind of shallow-layer soil body Quick drainage method the most according to claim 1, it is characterized in that draining board includes the central layer of inside and the filter membrane that central layer is peripheral, drainage channel is formed between described central layer and filter membrane, described central layer is non-degradable material or difficult degradation material is made, and described filter membrane is that degradation material is made.

A kind of shallow-layer soil body Quick drainage method the most according to claim 1, it is characterised in that well-point pipe and draining board are that yi word pattern is arranged or L-type is arranged.