CN218622181U

CN218622181U - Drainage structure for drainage consolidation of soft soil body

Info

Publication number: CN218622181U
Application number: CN202222669731.8U
Authority: CN
Inventors: 何根云; 何晨萌
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-03-14
Anticipated expiration: 2032-10-11

Abstract

The utility model discloses a drainage structure for drainage consolidation of soft soil body, include the sand well that drills to establish according to the design depth to and set up the sand bag of water-permeable in the sand well, it has the grit to fill in the sand bag to form the drainage cylinder of vertical arrangement, be provided with drainage device near its bottom in the drainage cylinder, drainage device's play water end is connected with the outlet pipe that extends drainage cylinder top, the water in the soft soil body space under the negative pressure effect that drainage device produced, permeates into the drainage cylinder and concentrates on the bottom of drainage cylinder, carry from bottom to top through drainage device, discharge from the top of drainage cylinder; the utility model discloses a drainage structures can be directly at the setting for degree of depth department of soft soil body formation negative pressure to from bottom to top carry the water to soft soil body top in order to realize the drainage, accelerate soft soil body consolidation speed, be applicable to soft soil body especially deep soft soil body, improved the efficiency of construction consolidation effect.

Description

Drainage structure for drainage consolidation of soft soil body

Technical Field

The utility model relates to a technical field that soft soil body drainage concreties especially relates to a drainage structures for soft soil body drainage concreties.

Background

The treatment of soft soil is a problem frequently encountered in the engineering construction process, and the soft soil has the characteristics of high water content, high pore ratio and high flow plasticity; therefore, a drainage consolidation method is often adopted to treat the soft soil body, and mainly a sand well is arranged to discharge pore water in a soil layer through the sand well so as to accelerate drainage consolidation of the soft soil body and improve the strength of the soil body; however, this construction method has the following problems:

(1) The construction method mainly drains water from the top of a soft soil body, and due to the fact that the index of additional stress transfer is reduced, a general drainage consolidation preloading method effectively treats a shallow soil body with the depth of 10-15m and 10-15m, when the depth exceeds 15m, the shallow soil body belongs to a deep soil body, the slope of drainage water power is small along with the increase of the depth, the deep soil body is difficult to drain, and the drainage efficiency is low;

(2) Because the water is drained from the top of the soft soil body, the water body needs to enter the sand well and can be drained only by the rising of the water level, so that the accumulated water in the sand well or the sand bag cannot be drained thoroughly, and the water level is higher;

(3) In order to accelerate drainage, the construction method needs to carry out preloading or vacuum preloading, so that the construction period and the construction cost are increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a drainage structures and construction method for soft soil body drainage consolidation, this drainage body and construction method can carry out the drainage consolidation to deep soft soil body to the efficiency of construction has been improved.

The purpose of the utility model is realized through the following technical scheme:

a drainage structure for drainage consolidation of a soft soil body comprises a sand well drilled according to a designed depth and a water-permeable sand bag arranged in the sand well, sand is filled in the sand bag to form a drainage column body which is vertically arranged, a drainage device is arranged in the drainage column body close to the bottom of the drainage column body, the water outlet end of the drainage device is connected with a water outlet pipe extending out of the top of the drainage column body, and a water body in a gap of the soft soil body penetrates into the drainage column body and is concentrated at the bottom of the drainage column body under the action of negative pressure generated by the drainage device, is conveyed from bottom to top through the drainage device and is discharged from the top of the drainage column body.

On the basis of the technical scheme, the utility model discloses can do following improvement:

furthermore, the water inlet end of the drainage device is connected with a water inlet pipe, and the water inlet pipe vertically extends downwards to the bottom of the drainage column body.

Furthermore, the drainage device comprises a pump chamber fixedly arranged near the bottom of the drainage column body and a micro water pump which is arranged in the pump chamber and can generate negative pressure; the pump chamber is provided with an annular side wall and a top wall, and a pump chamber for accommodating the micro water pump is formed inside the pump chamber; the miniature water pump is fixed on the roof of pump chamber, and the inlet end of miniature water pump is connected the inlet tube, and the outlet pipe is connected to the play water pipe, and the outlet pipe extends the pump chamber back from the lower extreme of pump chamber, and the top of drainage cylinder body is extended upwards to the vertical.

Furthermore, the tail end of the water inlet pipe is provided with a filtering component capable of blocking fine soil.

Furthermore, the wiring end of the miniature water pump is connected with a waterproof power line, and the upper end of the power line extends out of the top of the drainage column body.

Furthermore, the sand bag is a water-permeable non-woven fabric filter bag, and the top opening and the bottom of the non-woven fabric filter bag are sealed.

Compared with the prior art, the utility model discloses the technique has following advantage:

(1) The drainage structure of the utility model is provided with the drainage device near the bottom of the drainage cylinder, negative pressure is generated by the drainage device, the water in the space of the soft soil body is accelerated to permeate into the drainage cylinder and is concentrated at the bottom of the drainage cylinder, and meanwhile, the water is conveyed from bottom to top by the drainage device and is discharged from the top of the drainage cylinder, so that the drainage structure can adapt to drainage consolidation of the soft soil body, especially the deep soft soil body, and the drainage efficiency is improved;

(2) The utility model discloses a drainage structures can be directly at the setting for degree of depth department of soft soil body formation negative pressure to from bottom to top carry the water to soft soil body top in order to realize the drainage, avoided the inside ponding of drainage structures, reduce the water level in the drainage structures, improve the drainage water conservancy slope of soft soil body.

Drawings

The invention will be described in detail with reference to the drawings and specific embodiments

Fig. 1 is a schematic structural view of a drainage structure for drainage consolidation of a soft soil body.

Reference numbers on the drawings: 1-sand well, 2-sand bag, 3-drainage column, 4-drainage device, 4 a-pump chamber, 4 b-micro water pump, 5-water outlet pipe, 6-water inlet pipe, 7-filter element, 8-power line, 9-pile head.

Detailed Description

The following description of the embodiments of the present invention with reference to the drawings is provided to assist understanding of the present invention, but the present invention is not limited thereto. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Referring to fig. 1, the utility model relates to a drainage structures for soft soil body drainage concreties, this drainage structures include and bore the sand shaft 1 of establishing according to the design degree of depth to and set up the sand bag 2 of water-permeable in sand shaft 1, it has the grit to fill in the sand bag 2, with the drainage cylinder 3 that forms vertical arrangement.

A drainage device 4 is embedded in the drainage column body 3, the drainage device 4 is provided with a water inlet end and a water outlet end, the water outlet end is connected with a water outlet pipe 5, and the top end of the water outlet pipe 5 extends out of the top of the drainage column body 3; the drainage device 4 can form negative pressure in the drainage column 3, accelerate the water in the gap of the soft soil body to enter the drainage column 3 under the action of the negative pressure, concentrate at the bottom of the drainage column 3, and convey from bottom to top through the drainage device 4 to be discharged from the top of the drainage column 3.

Specifically, the sandbag 2 is a water-permeable non-woven fabric filter bag, the top of which is open and the bottom is closed; a drainage channel for draining water is formed in the drainage column 3, and the drainage channel is a gap between sand and stones in the drainage column 3; when the drainage device 4 is operated, negative pressure is formed in the drainage cylinder 3, under the action of the negative pressure, water in the gap of the soft soil body quickly penetrates through the non-woven fabric filter bag, flows downwards along a drainage channel inside the drainage cylinder 3, is concentrated at the bottom of the drainage cylinder 3, is conveyed from bottom to top through the drainage device 4 and is discharged from the top of the drainage cylinder 3, so that the drainage consolidation efficiency is improved, and the soft soil body is separated from the sand bag 2.

The end of intaking of drainage device 4 is connected with inlet tube 6, and the vertical downwardly extending of inlet tube 6 extends to the bottom of drainage cylinder 3 to in the water of 3 bottoms of drainage cylinder is concentrated in the extraction, avoid ponding in the drainage structures, reduced the water level in the drainage structures moreover, improve the drainage water conservancy slope of soft soil body.

The drainage device 4 comprises a pump chamber 4a fixedly arranged near the bottom of the drainage column body 3 and a micro water pump 4b which is arranged in the pump chamber 4a and can generate negative pressure; the pump chamber 4a has an annular side wall and a top wall, and a space for accommodating the micro-water pump 4b is formed inside the pump chamber; the micro water pump 4b is fixed on the top wall of the pump chamber 4a, so that the fault caused by soaking in water is avoided, and the service life is prolonged; the water inlet end of the micro water pump 4b is connected with a water inlet pipe 6, the water outlet end is connected with a water outlet pipe 5, and the water outlet pipe 5 extends out of the pump chamber 4a from the lower end of the pump chamber 4a and then vertically extends upwards out of the top of the drainage column 3; meanwhile, the lift of the micro water pump 4b is greater than the height of the drainage column 3.

The tail end of the water inlet pipe 6 is provided with a filtering part 7, the filtering part 7 in the embodiment is a water-permeable non-woven fabric filter membrane, and the non-woven fabric filter membrane is wrapped at the tail end port of the water inlet pipe 6 so as to prevent fine soil from entering the micro water pump 4b to influence the performance of the water pump or generate faults; the non-woven fabric filter membrane can be a single layer, and according to actual needs, the end port of the water inlet pipe 6 can be wrapped by a plurality of layers of filter membranes, and other existing filter components 7, such as a plug net or filter cotton, can also be adopted.

The wiring end of the micro water pump 4b is connected with a waterproof power line 8, and the upper end of the power line 8 extends out of the top of the drainage column body 3 so as to be connected with external power supply equipment.

During construction, a sand well machine is used for pressing a soft soil body to a designed depth, a sand bag, a drainage device and sand stones are filled into a sleeve of the sand well machine, the sleeve is pulled out, and the pile head 9 is separated from the sleeve and then is left in the soft soil body.

The above embodiments of the present invention are not limited to the protection scope of the present invention, the present invention is not limited to this, all kinds of according to the above content of the present invention, according to the common technical knowledge and the conventional means in this field, without departing from the above basic technical idea of the present invention, it is right to the above structure of the present invention makes other various modifications, replacements or changes, all should fall within the protection scope of the present invention.

Claims

1. A drainage structure for drainage consolidation of a soft soil body comprises a sand well drilled according to a designed depth and a water-permeable sand bag arranged in the sand well, wherein sand and stone are filled in the sand bag to form a drainage column body which is vertically arranged.

2. The drainage structure for drainage consolidation of a soft soil mass of claim 1, wherein the water inlet end of the drainage device is connected with a water inlet pipe, and the water inlet pipe extends vertically downward to the bottom of the drainage column.

3. A drainage arrangement for drainage consolidation of a soft earth mass as claimed in claim 2 wherein the drainage means comprises a pump chamber fixedly located adjacent the base of the drainage column and a micro pump arranged to generate a negative pressure in the pump chamber; the pump chamber is provided with an annular side wall and a top wall, and a pump chamber for accommodating the micro water pump is formed inside the pump chamber; the miniature water pump is fixed on the roof of pump chamber, and the inlet end of miniature water pump is connected the inlet tube, and the outlet pipe is connected to the play water pipe, and the outlet pipe extends the pump chamber back from the lower extreme of pump chamber, and the top of drainage cylinder body is extended upwards to the vertical.

4. The drainage structure for drainage consolidation of soft soil according to claim 3, wherein the end of the inlet pipe is provided with a filter member for blocking fine soil.

5. The drainage structure for drainage consolidation of a soft soil mass according to claim 4, wherein the terminal of the micro-pump is connected with a waterproof power cord, and the upper end of the power cord extends out of the top of the drainage column.

6. The drainage structure for drainage consolidation of a soft soil according to any of claims 1 to 5, wherein the sandbag is a water permeable non-woven filter bag, the top of which is open and the bottom is closed.