CN114775629A - Blocking dredging device for support body and construction method thereof - Google Patents

Abstract

The invention relates to the technical field of geotechnical engineering, and discloses a support body blockage dredging device and a construction method thereof, wherein the support body blockage dredging device comprises: the drainage device comprises a sealing cover, a drainage blind pipe, a flow guide insertion pipe sleeved outside the drainage blind pipe and a water collecting tank; the first end opening of the diversion cannula is communicated with the water collecting tank, and the sealing cover covers the second end opening of the diversion cannula; a filter screen is arranged on the outer wall or the inner wall of the drainage blind pipe; a plurality of water drainage through holes are respectively arranged on the diversion cannula and the sealing cover. Simultaneously, be equipped with the filter screen on the drainage blind pipe, can take out the change or clear up in order to guarantee that the drainage is smooth and easy through regularly with the filter screen to the filter screen can also filter the impurity in the groundwater, guarantees that groundwater can not take away the granule in the soil body, ensures all ring edge borders safety and stability, the reutilization of being convenient for. Moreover, the supporting body block dredging device is flexible to install, multiple in application scenes, and capable of solving the problems of single-point leakage, multi-point leakage, surface leakage and the like of the supporting body so as to realize quick block leakage.

Description

Blocking dredging device for support body and construction method thereof

Technical Field

The invention relates to the technical field of geotechnical engineering, in particular to a support block dredging device and a construction method thereof.

Background

During the construction of foundation pits in high water level areas, continuous closed supporting bodies (supporting piles, water stop piles and concrete walls are generally called) are usually arranged around the foundation pits to play the roles of strengthening the stability of the side walls of the foundation pits and stopping underground water so as to protect the safety of the construction of underground main body structures and the surrounding environment of the foundation pits. In actual engineering, the foundation pit supporting body is often leaked due to reasons such as poor integrity (slag inclusion and pile breakage) of a pile body of a water stop pile (such as a high-pressure jet grouting pile), pile position and verticality deviation, insufficient occlusion of the water stop pile and a supporting pile. After the supporting body leaks water, not only can inconvenience be brought to later construction and the construction period is delayed, but also safety accidents are caused because a large amount of soil bodies are taken away by the leaked water. Therefore, the supporting body water leakage point is treated by a quick and effective method, and the method is a basic guarantee for the safe construction of the foundation pit.

In order to reduce the influence of the water leakage of the foundation pit on the construction of the foundation pit and the surrounding environment, the water leakage point of the support body needs to be treated when the foundation pit leaks water. The existing foundation pit water leakage treatment methods comprise a blocking water interception method and a drainage tube drainage method. The former mainly includes the following two measures: 1) reinforcing the waterproof curtain: and (4) plugging and reinforcing the outer side of the foundation pit enclosure body by adopting high-pressure jet grouting to form a second water-stopping barrier. The method has the advantages of large engineering quantity, high manufacturing cost and easy restriction of construction machinery by external factors. 2) Drilling and grouting: mechanically drilling a hole at the water leakage position of the foundation pit, inserting a grouting pipe to prepare slurry on site, pumping the prepared slurry into a water leakage point by using a grouting pump, dispersing, emulsifying and foaming the slurry to form a consolidation body to plug the water leakage point. The slurry prepared by the method needs to be prepared on site, has high fluidity and long solidification time, and is difficult to block the water leakage point in a short time, so that the problem cannot be solved radically and quickly. The latter is to insert a drainage tube at the water leakage point of the foundation pit to lead the underground water to the open trench for discharge. The method causes water resource waste, and meanwhile, because the filtration treatment is not carried out, the fine particles in the soil body are taken away by the underground water, so that the soil layer is hollow, the foundation pit side slope collapse and the surface settlement outside the pit are caused, and the adjacent buildings are adversely affected.

In addition, the problems of multi-point leakage, surface leakage and the like of the support body cannot be solved simultaneously by the existing treatment method, the existing device is mostly fixed in size and cannot be adjusted as required due to uncertainty of water leakage positions, and when the plugging position is not accurately installed or the water leakage condition is aggravated, plugging points cannot be deepened flexibly or supplemented nearby. In addition, the applicability of the existing device is poor, and one set of equipment cannot be suitable for different water stopping forms and water stopping pile sizes.

Disclosure of Invention

The purpose of the invention is: the support body blockage dredging device and the construction method thereof are provided to solve the problems of single-point leakage, multi-point leakage, surface leakage and the like of a support body, can realize quick organized blockage dredging of leakage points, prevent a large amount of soil from being taken away and ensure the safety of the surrounding environment of a foundation pit.

In order to achieve the above object, the present invention provides a support block dredging device, comprising: the drainage device comprises a sealing cover, a drainage blind pipe, a flow guide insertion pipe and a water collecting tank, wherein the flow guide insertion pipe is inserted to the water leakage position of a support body and sleeved outside the drainage blind pipe; the first end opening of the diversion cannula is communicated with the water collecting tank, and the sealing cover covers the second end opening of the diversion cannula; a filter screen is arranged on the outer wall or the inner wall of the drainage blind pipe; the diversion cannula and the sealing cover are respectively provided with a plurality of drainage through holes.

Optionally, the guide cannula comprises: the water pipe comprises a first water permeable pipe and a second water permeable pipe communicated with the first water permeable pipe; the first end of the first permeable pipe is communicated with the water collecting tank, and the second end of the first permeable pipe is detachably connected with the first end of the second permeable pipe; the cover covers the second end opening of the second water permeable pipe.

Optionally, the first permeable pipe and the second permeable pipe are cylindrical pipes and are coaxially arranged; the horizontal position of the second end of the first permeable pipe is higher than that of the first end of the first permeable pipe.

Optionally, a threaded hole is formed in the inner wall of the second end of the first permeable pipe; a threaded sleeve is arranged at the first end of the second permeable pipe; the threaded sleeve is in threaded connection with the threaded hole.

Optionally, the method further includes: the mounting plate is used for being fixed on the inner wall of the support body, and the connecting plate is arranged at the first end of the first permeable pipe; a plurality of drilling reserved openings are formed in the mounting plate; the first water permeable pipe penetrates through the drilling reserved opening; the connecting plate is fixedly connected with the mounting plate.

Optionally, the mounting plate is provided with a fixing member for connecting with the supporting body.

Alternatively, the fixing member may be a J-shaped reinforcing bar or an expansion bolt.

Optionally, the water collecting tank includes: a box body and a cover plate; the mounting plate is a side plate of the box body; the upper end opening of box, the apron lid is established the upper end opening of box.

Optionally, the method further includes: a drain pipe and a drain valve; the drain pipe is communicated with the box body; the drain valve is arranged on the drain pipe.

A construction method of the support body block dredging device comprises the following steps:

fixing the mounting plate on the inner wall of the support body;

drilling the water leakage point of the support body through the drilling reserved port to form a pore channel;

inserting a flow guide inserting pipe into the drilling reserved opening to be inserted into the pore channel;

welding and fixing the mounting plate and the connecting plate;

filling waterproof mortar in a gap between the pore channel and the flow guide insertion pipe;

inserting a drainage blind pipe and a filter screen into the guide insertion pipe;

and installing a box body, and covering the cover plate on an opening at the upper end of the box body.

Compared with the prior art, the blocking dredging device for the support body and the construction method thereof have the beneficial effects that:

according to the embodiment of the invention, the drainage through holes are respectively formed in the diversion insertion pipe and the sealing cover, so that the water absorption coverage area of the diversion insertion pipe is larger, meanwhile, the filter screen is arranged on the drainage blind pipe, the filter screen can be periodically drawn out for replacement or cleaning to ensure smooth drainage, the filter screen can also filter impurities in underground water, the underground water can not take away particles in soil, the safety and stability of the surrounding environment can be ensured, the collected leakage water can not carry the soil, and the collected leakage water is convenient for secondary utilization. Moreover, the supporting body block dredging device is flexible to install, multiple in application scenes, and capable of solving the problems of single-point leakage, multi-point leakage, surface leakage and the like of the supporting body so as to realize quick block leakage.

Drawings

FIG. 1 is a schematic structural view of a blocking removal device for a support body according to an embodiment of the present invention;

fig. 2 is an exploded view of a support block dredging device provided by an embodiment of the invention;

FIG. 3 is a top view of a support block removal device according to an embodiment of the present invention;

FIG. 4 is a schematic view of a configuration of a guide cannula in an embodiment of the present invention;

FIG. 5 is a schematic view showing the internal structure of a fixed drain pipe according to an embodiment of the present invention;

FIG. 6 is a top view of a support block removal device according to another embodiment of the present invention;

fig. 7 is a top view of a support block unplugging device provided by another embodiment of the invention.

In the figure, 1, cover; 2. a drainage blind pipe; 3. supporting the body; 31. supporting piles; 32. water stopping piles; 33. concrete; 4. a flow guiding cannula; 41. a first water permeable pipe; 42. a second water permeable pipe; 43. a drain through hole; 5. filtering with a screen; 6. mounting a plate; 61. drilling a reserved hole; 7. a connecting plate; 8. a fixing member; 9. a water collection tank; 91. a box body; 92. a cover plate; 10. a drain pipe; 11. and (6) draining the water valve.

Detailed Description

The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

First, it should be noted that the orientations of top, bottom, upward, downward, and the like referred to herein are defined with respect to the orientation in the respective drawings, are relative concepts, and thus can be changed according to different positions and different practical situations in which they are located. These and other orientations, therefore, should not be used in a limiting sense.

It should be noted that the term "comprising" does not exclude other elements or steps and the "a" or "an" does not exclude a plurality.

Furthermore, it should also be noted that any single technical feature described or implied in the embodiments herein, or any single technical feature shown or implied in the figures, can still be combined between these technical features (or their equivalents) to obtain other embodiments of the present application that are not directly mentioned herein.

It will be further understood that the terms "first," "second," and the like, are used herein to describe various information and should not be limited to these terms, which are used merely to distinguish one type of information from another. For example, "first" information may also be referred to as "second" information, and similarly, "second" information may also be referred to as "first" information, without departing from the scope of the present application.

It should be noted that in different drawings, the same reference numerals denote the same or substantially the same components.

As shown in fig. 1, fig. 2, fig. 3, and fig. 5, a blocking dredging device for a supporting body 3 according to a preferred embodiment of the present invention comprises: the drainage device comprises a sealing cover 1, a drainage blind pipe 2, a flow guide insertion pipe 4 and a water collecting tank 9, wherein the flow guide insertion pipe 4 is inserted into a water leakage position of a support body 3 and sleeved outside the drainage blind pipe 2; the first end opening of the diversion cannula 4 is communicated with the water collecting tank 9, and the sealing cover 1 covers the second end opening of the diversion cannula 4; a filter screen 5 is arranged on the outer wall or the inner wall of the drainage blind pipe 2; a plurality of drainage through holes 43 are respectively arranged on the diversion cannula 4 and the sealing cover 1.

The invention solves the problems of single-point leakage, multi-point leakage, surface leakage and the like of the support body 3 and can realize quick leakage stoppage. In the using process, a water leakage point of the support body 3 needs to be drilled to form a pore channel, the guide insertion tube 4 of the present application is inserted into the pore channel, so that the guide insertion tube 4 is communicated with the water leakage position inside the support body 3, the water at the water leakage position flows to the first end opening of the guide insertion tube 4 from the second end opening of the guide insertion tube 4 along the guide insertion tube 4, and the first end opening of the guide insertion tube 4 is communicated with the water collecting tank 9, so that the leaked water enters the water collecting tank for collection, in order to prevent impurities from entering the guide insertion tube 4, the sealing cover 1 covers the second end opening of the guide insertion tube 4, so that the impurities are prevented from entering the guide insertion tube 4 from the second end opening of the guide insertion tube 4, and the guide insertion tube 4 and the sealing cover 1 are respectively provided with a plurality of water drainage through holes 43. After the pull throughs of this application of the installation of the support body 3, can flow into the header tank 9 with the water of the 3 water leakage points of the support body through the water conservancy diversion intubate 4 and collect, and because the water conservancy diversion intubate 4 with a plurality of drainage through hole 43 have been seted up on the closing cap 1 respectively, consequently the infiltration water can also get into in the water conservancy diversion intubate 4 through drainage through hole 43 to make the water absorption coverage area of the water conservancy diversion intubate 4 of this application bigger. This application still sets up drainage blind pipe 2 in the inside of water conservancy diversion intubate 4, drainage blind pipe 2 has high surface infiltration ability and inside ability of leading to water, and have splendid compressive capacity and the ability of adaptation deformation, have splendid chemical inertia, can keep permanent life-span in geotechnical engineering uses, make it not only play the supporting role to water conservancy diversion intubate 4, can also be quick will get into in the water infiltration entering drainage blind pipe 2's the inner passage of water conservancy diversion intubate 4, in order to prevent that the water in the water conservancy diversion intubate 4 from permeating to the braced body 3 once more. Simultaneously, filter screen 5 has still been laid to the outside or the inside of drainage blind pipe 2, can be through taking filter screen 5 out regularly and change or clear up in order to guarantee that the drainage is smooth and easy to filter screen 5 can also collect and get into the inside impurity of drainage blind pipe 2, in order to prevent that groundwater from taking away the soil body.

Specifically, the supporting body 3 is composed of a supporting pile 31, a water stop pile 32, and poured concrete 33.

Referring to fig. 1 to 3, an embodiment is a schematic view of applying the present invention to a biaxial interlocking type waterproof pile supporting body 3. Referring to fig. 6, another embodiment is a schematic view of the present invention applied to a uniaxial biting type waterstop supporting body 3, respectively. Referring to fig. 7, still another embodiment is a schematic view of applying the present invention between continuous waterstop pile supports 3. It will be understood that the invention can also be applied to different types of supports 3, not limited to the above.

In the embodiment of the present invention, the aperture of the drainage through hole 43 on the diversion insertion tube 4 and the sealing cover 1 can be selected according to the soil environment of practical application, and it is required to ensure that the drainage through hole 43 is large enough to allow the permeated water to rapidly circulate while preventing impurities from entering the drainage blind pipe 2.

Further, referring to fig. 4, the guide cannula 4 includes: a first permeable pipe 41 and a second permeable pipe 42, the second permeable pipe 42 is communicated with the first permeable pipe 41. The first end of first pipe 41 of permeating water with the header tank intercommunication, the second end of first pipe 41 of permeating water with the connection can be dismantled to the first end of second pipe 42 of permeating water. The cover 1 is covered in the second end opening of the second water permeable pipe 42. Wherein, the setting of second pipe 42 of permeating water can make the length that stretches into the pore in this application of extension to make the staff can select according to on-the-spot actual demand.

In practical application, the length of the neural canal can be increased by coaxially connecting a plurality of sections of second permeable pipes 42 to the first permeable pipe 41 in sequence.

It can be understood that the length of the first water permeable pipe 41 is fixed, when the water leaking position of the support body 3 is located at a deeper position of the hole and the first water permeable pipe 41 alone cannot extend to the water leaking position, the second water permeable pipe 42 can be connected to the second end of the first water permeable pipe 41, so that the block dredging device of the present application can extend to the water leaking position of the hole.

In a possible embodiment, the first pervious pipe 41 and the second pervious pipe 42 are cylindrical pipes and are coaxially arranged, so that the present application can extend into the duct along a straight line. The horizontal position of the second end of the first permeable pipe 41 is higher than the horizontal position of the first end of the first permeable pipe 41, so that the permeated water can flow from a high position to a low position, and the permeated water can rapidly enter the water collecting tank 9.

In a possible embodiment, the second end of the first permeable pipe 41 is provided with a threaded hole on the inner wall. A threaded sleeve is arranged at the first end of the second permeable pipe 42. The thread sleeve is in threaded connection with the threaded hole to realize the detachable connection of the first permeable pipe 41 and the second permeable pipe 42.

It should be understood that the detachable connection of the first and second permeable tubes 41 and 42 in this application can also be an adhesive, snap-fit, or sleeve connection.

Further, referring to fig. 1 and 2, the present invention further includes: mounting panel 6 and connecting plate 7, mounting panel 6 are fixed on the inner wall of the support body 3, connecting plate 7 set up in first 41 first ends of permeating water are served to connecting plate 7 does not block up the first opening of permeating water pipe 41. A plurality of drilling reserved openings 61 have been seted up on mounting panel 6, first pipe 41 of permeating water runs through drilling reserved opening 61, connecting plate 7 with 6 fixed connection of mounting panel, this application is inserting water conservancy diversion intubate 4 and is locating drilling reserved opening 61 is from inserting extremely back in the hole is with mounting panel 6 and connecting plate 7 welded fastening to make water conservancy diversion intubate 4 can stably insert in the hole.

Specifically, the mounting plate 6 is fixed on the inner wall of the concrete 33.

Specifically, referring to fig. 1, the mounting plate 6 is fully paved with the drilling reserved hole 61, so that the supporting body 3 covered by the mounting plate 6 can be drilled, and the length of the connecting plate 7 is greater than the width of the drilling reserved hole 61, so that the guiding insertion tube 4 can be inserted into the drilling reserved hole 61 and can limit the connecting plate 7 in the process of being inserted into the pore passage.

In a possible embodiment, referring to fig. 2 and 3, the mounting plate 6 is connected to the supporting body 3 through a fixing member 8, and the mounting plate 6 is flat, the mounting plate 6 is attached to the inner wall of the supporting body 3, and in the process of practical application, a J-shaped steel bar can be pre-embedded as the fixing member 8 when the supporting body 3 is filled with cement, so as to facilitate the subsequent setting of the mounting plate 6.

In a possible embodiment, with reference to fig. 1, the water collection tank 9 comprises: a case 91 and a cover 92. The mounting panel 6 is a side plate of the box 91, the upper end of the box 91 is open, and the cover plate 92 covers the upper end of the box 91.

First, a description will be given of the case 91, wherein the case 91 is embodied as a rectangular case 91, and respective side plates of the case 91 are detachably coupled, and the case 91 has a receiving groove, and a first end opening of the first water permeable pipe 41 communicates with the receiving groove. Therefore, when the tank 91 is installed, the mounting plate 6 can be installed, then the operations of drilling and inserting the guide cannula 4 are performed, and finally the other side plates of the tank 91 are connected to the mounting plate 6 to form a tank 91 capable of storing water.

Further, referring to fig. 1 and 2, the present application further includes: a drain pipe 10 and a drain valve 11. The drain pipe 10 is communicated with the tank body 91, and the drain valve 11 is provided on the drain pipe 10 to enable rapid drainage of the permeated water inside the tank body 91.

Support 3 in this application and dredge stifled device and can set up a plurality ofly in order to cover 3 inner walls of the support to two support 3 dredge stifled devices from top to bottom and be linked together through drain pipe 10, so that the infiltration water can fall into to bottommost box 91, so that unified management and reutilization have improved the suitability of this application.

The invention also provides a construction method of the blocking dredging device for the support body 3, which comprises the following steps:

s1, fixing the mounting plate 6 on the inner wall of the support body 3.

And S2, drilling the water leakage point of the support body 3 through the drilling reserved opening 61 to form a pore channel.

And S3, inserting the guide insertion pipe 4 into the drilling reserved opening 61 and inserting the guide insertion pipe into the pore channel.

And S4, welding and fixing the mounting plate 6 and the connecting plate 7.

And S5, filling waterproof mortar in the gap between the pore passage and the diversion insertion pipe 4.

S6, inserting the drainage blind pipe 2 into the diversion cannula 4.

And S7, inserting a filter screen 5 into the inner wall of the drainage blind pipe 2.

And S8, mounting the box body 91, and covering the cover plate 92 on the upper end opening of the box body 91.

To sum up, the embodiment of the invention provides a blocking removal device for a support body 3 and a construction method thereof, which solve the problem of water leakage of the support body 3, and the blocking removal device for the support body 3 can be suitable for a series of water leakage conditions of the support body 3, such as single-point leakage, multi-point leakage, surface leakage and the like, of the support body 3 by flexibly arranging the blocking removal point and the mounting plate 6. In addition, the first permeable pipe 41 is detachably connected with the first permeable pipe 41, so that the invention has wide application range, realizes the adjustment of dredging depth, can conduct omnibearing dredging at different depths on the water leakage area of the support body 3 according to actual requirements, and greatly improves dredging efficiency. And the blocking dredging device for the support body 3 can also be provided with a plurality of laminated layers, so that the permeated water can fall into the bottommost box body 91, the unified management and the secondary utilization are facilitated, and the applicability of the blocking dredging device is improved.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims (10)

1. A support block dredging device, comprising: the water collecting device comprises a sealing cover, a drainage blind pipe, a flow guide insertion pipe and a water collecting tank, wherein the flow guide insertion pipe is used for being inserted into the water leakage position of the support body and sleeved outside the drainage blind pipe; the first end opening of the diversion cannula is communicated with the water collecting tank, and the sealing cover covers the second end opening of the diversion cannula; a filter screen is arranged on the outer wall or the inner wall of the drainage blind pipe; the diversion insertion pipe and the sealing cover are respectively provided with a plurality of drainage through holes.

2. The support blockage dredging device of claim 1, wherein the diversion cannula comprises: the device comprises a first permeable pipe and a second permeable pipe communicated with the first permeable pipe; the first end of the first permeable pipe is communicated with the water collecting tank, and the second end of the first permeable pipe is detachably connected with the first end of the second permeable pipe; the cover covers the second end opening of the second water permeable pipe.

3. The support block dredging device of claim 2, wherein the first water permeable pipe and the second water permeable pipe are cylindrical pipes and are coaxially arranged; the horizontal position of the second end of the first permeable pipe is higher than that of the first end of the first permeable pipe.

4. The support blockage dredging device of claim 3, wherein a threaded hole is formed in the inner wall of the second end of the first water permeable pipe; a threaded sleeve is arranged at the first end of the second permeable pipe; the threaded sleeve is in threaded connection with the threaded hole.

5. The support block unblocking apparatus of claim 2, further comprising: the mounting plate is used for being fixed on the inner wall of the support body, and the connecting plate is arranged at the first end of the first permeable pipe; a plurality of drilling reserved openings are formed in the mounting plate; the first water permeable pipe penetrates through the drilling reserved opening; the connecting plate is fixedly connected with the mounting plate.

6. The support block dredging device of claim 5, wherein the mounting plate is provided with a fixture for connection with a support block.

7. The support block unblocking apparatus of claim 6 wherein the fixing member is J-shaped steel bar or expansion bolt.

8. The support block unblocking apparatus of claim 5, wherein the water collection tank comprises: a box body and a cover plate; the mounting plate is a side plate of the box body; the upper end opening of box, the apron lid is established the upper end opening of box.

9. The support clog-shedding apparatus of claim 8 further comprising: a drain pipe and a drain valve; the drain pipe is communicated with the box body; the drain valve is arranged on the drain pipe.

10. A construction method of the support block dredging device based on any one of claims 1 to 9, characterized by comprising the following steps:

fixing the mounting plate on the inner wall of the support body;

drilling the water leakage point of the support body through the drilling reserved port to form a pore channel;

inserting a flow guide insertion pipe into the drilling reserved opening to be inserted into the pore channel;

welding and fixing the mounting plate and the connecting plate;

filling waterproof mortar in a gap between the pore channel and the flow guide insertion pipe;

inserting a drainage blind pipe and a filter screen into the guide insertion pipe;

and installing a box body, and covering the cover plate on an opening at the upper end of the box body.

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