CN109555131B

CN109555131B - Civil engineering construction is with foundation ditch lateral wall cover protection device

Info

Publication number: CN109555131B
Application number: CN201910014365.2A
Authority: CN
Inventors: 朱登元; 王玉兰; 付厚利; 韩吉才; 于本福
Original assignee: Shandong Linda Hengtong Building Technology Co ltd; Linyi University
Current assignee: Shandong Linda Hengtong Building Technology Co ltd; Linyi University
Priority date: 2019-01-08
Filing date: 2019-01-08
Publication date: 2020-07-07
Anticipated expiration: 2039-01-08
Also published as: CN109555131A

Abstract

The invention discloses a foundation pit side wall covering protection device for civil engineering construction, which comprises a foundation pit, a side wall protection device, an outer transverse fixing device and an outer oblique fixing device, wherein an internal water pipe is arranged inside a supporting baffle plate, so that the side wall of the foundation pit can be effectively supported and protected, the problem of accumulated water in the foundation pit can be timely solved, the problem that a water pumping pipe needs to be repeatedly laid for many times when the accumulated water in the foundation pit is treated is avoided, the accumulated water extracted from the foundation pit can be collected into an external water treatment device to be recycled, the energy is saved, the environment is protected, in addition, when a connecting plate is built inside the foundation pit, only a sliding connecting block needs to be placed in an internal groove to slide down, and then different fixing devices are selected according to different connecting: the transverse connecting plate adopts an outer transverse fixing device; the outer oblique fixing device is selected for use by the oblique connecting plate, the fixing mode of the fixing device is firm, the installation is quick, time and labor are saved, the building time can be greatly shortened, and the building efficiency is improved.

Description

Civil engineering construction is with foundation ditch lateral wall cover protection device

Technical Field

The invention relates to the technical field of building construction, in particular to a foundation pit side wall covering protection device for civil engineering construction.

Background

The foundation pit is a soil pit excavated at a design position of a foundation according to the elevation and the plane size of the foundation, belongs to temporary engineering, and has the function of providing a space so that the building operation of the foundation can be carried out according to the position appointed by the design, and therefore, the side wall of the foundation pit is often supported and protected before the building construction.

And the foundation ditch lateral wall that adopts at present supports protection device and all adopts external supporting plate to support, and supplementary external drinking-water pipe eliminates ponding in the foundation ditch again, and this kind of device structure is complicated, and troublesome poeration, when handling ponding at every turn, all will carry out the work of laying the drinking-water pipe at every turn, has increased constructor's work load, and in addition, current support protection device also is convenient for carrying out the building of built-in connecting plate, causes certain difficulty to subsequent construction work.

Disclosure of Invention

The invention aims to provide a foundation pit side wall covering and protecting device for civil engineering construction, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

a foundation pit side wall covering protection device for civil engineering construction comprises a foundation pit, a side wall protection device, an outer transverse fixing device and an outer oblique fixing device, wherein the outer side of the side wall of the foundation pit is respectively provided with the side wall protection device, the side surface of the side wall protection device is L-shaped, the side wall protection device is fixedly connected with the side wall of the foundation pit through a fastening long steel nail, the upper end of the side wall protection device is fixed through an outer fixing seat, and the lower part of the outer fixing seat is fixedly connected with the upper surface of the foundation pit through an outer fastening long bolt;

the side wall protection device comprises a baffle plate, a built-in water pipe and a built-in groove, a plurality of steel nail mounting holes are formed in the outer surface of the baffle plate, a ground grabbing tooth groove structure is connected below the baffle plate in a welding mode, the built-in water pipe is arranged on the inner side of the outer surface of the baffle plate, a filter screen structure is connected below the built-in water pipe, one side of the filter screen structure is fixedly connected with the baffle plate, the other side of the filter screen structure is arranged on the outer side of the baffle plate, the built-in groove is formed in the outer side surface of the baffle plate and is arranged on two sides of the built-in water pipe, two lateral sliding grooves are formed in the side wall of each built-in groove respectively, a first positioning hole is formed in the bottom side of each built-in groove, a lateral sliding block is connected with a lateral sliding block in a sliding mode, the lateral sliding blocks are arranged on two, an outer transverse fixing device or an outer oblique fixing device is installed in the thread hole, a transverse connecting plate can be fixedly connected in the middle of the outer transverse fixing device through a bolt, and an oblique connecting plate can be fixedly connected in the middle of the outer oblique fixing device through a bolt;

the outer transverse fixing device comprises a connecting flange and an installing shaft, the connecting flange is welded and connected with the installing shaft, a plurality of flange connecting holes are formed in the connecting flange, installing screw holes are formed in the connecting flange, grooves are formed in the outer side surface of the connecting flange, clamping holes are formed in the installing shaft, threads are formed in the outer side of the installing shaft and the inner side of the clamping holes, the size of the clamping holes of the installing shaft is the same as that of the installing screw holes in the connecting flange, threaded connecting screw holes in the outer side of the installing shaft are connected with clamping plates through threads in the inner sides of the clamping holes, the clamping plates are welded with the connecting plate flange, a plurality of flange connecting holes are formed in the plate flange, convex blocks matched and connected with the grooves are formed in the outer side surface of the plate flange, the connecting flange and the plate flange are connected through the flange connecting holes, the other side of the steel plate is welded with another plate flange, the other side of the plate flange is fixedly connected with an outer oblique fixing device through bolts, and a gasket is arranged at the joint of the long bolts;

the outer oblique fixing device comprises an installation shaft, an inclined plate and an oblique flange, wherein threads are arranged on the outer portion of the installation shaft, the threads of the installation shaft are installed in threaded holes of a sliding connecting block, the other end of the installation shaft is connected with the inclined plate in a welded mode, threaded holes are formed in the inner side of the inclined plate, the other end of the inclined plate is connected with the oblique flange in a welded mode, a plurality of flange connecting holes are formed in the oblique flange, threaded holes are formed in the inner side of the oblique flange, the threaded holes are the same as the threaded holes of the inclined plate in size, the clamping plate penetrates through the oblique flange, the threads of the clamping plate are installed in the inclined plate, the oblique flange and the plate flange are connected through the flange connecting holes through long bolts and fixed on the outer side through tightening nuts, and a gasket is arranged at the joint of the long bolt.

Preferably, an outer connecting pipe hole of the built-in water pipe is formed in the outer fixing seat, the inner wall of the outer connecting pipe hole is a threaded hole, the outer connecting pipe hole is in threaded connection with the outer water pipe, a sealing strip is arranged at the threaded connection position, a water outlet on the other side of the outer water pipe is fixedly connected with a water suction pump, and the water suction pump is connected with a water treatment device through a pipeline.

Preferably, the branch baffle, the built-in water pipe and the built-in groove are of an integrated structure, and the built-in water pipe is a preset pipe hole in the processing process of the branch baffle.

Preferably, the upper surface of the outer fastening long bolt is welded with an end flange, the lower surface of the outer fixing seat is welded with a bottom flange, a plurality of flange connecting holes are formed in the end flange and the bottom flange, and the end flange and the bottom flange are fixedly connected with the outer fixing seat through the flange connecting holes through bolts.

Preferably, the filter screen structure includes filter screen and sand control permeable membrane, and the outermost fixed connection sand control permeable membrane of filter screen can prevent when drawing water to the foundation ditch that silt blockked up filter screen structure's the condition and take place.

Compared with the prior art, the invention has the beneficial effects that: this foundation ditch lateral wall covers protection device establishes built-in water pipe inside a baffle, not only can effectually support the protection to the foundation ditch lateral wall, can also in time handle the ponding problem in the foundation ditch, when having avoided handling foundation ditch ponding, need the work of repetition laying the drinking-water pipe many times, and the ponding of extracting from the foundation ditch, can collect recycle again in the outside water treatment ware, energy-concerving and environment-protective, furthermore, when the connecting plate is built to the foundation ditch inside, only need to place sliding connection piece including built-in inslot cunning down can, then according to the connecting plate of difference, choose for use different fixing device: the transverse connecting plate adopts an outer transverse fixing device; the outer oblique fixing device is selected for use by the oblique connecting plate, the fixing mode of the fixing device is firm, the installation is quick, time and labor are saved, the building time can be greatly shortened, and the building efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a foundation pit side wall covering protection device of the invention.

Fig. 2 is a schematic cross-sectional view of a sidewall protection device according to the present invention.

FIG. 3 is a schematic structural diagram of the built-in slot of the present invention.

Fig. 4 is a schematic view showing the structure of the sliding joint block of the present invention.

FIG. 5 is a schematic view of the connection structure of the transverse connection plate of the present invention.

FIG. 6 is a schematic structural view of the external lateral fixation device of the present invention.

Fig. 7 is a schematic structural view of the external oblique fixing device of the present invention.

In the figure: 1. a foundation pit; 2. a sidewall protection device; 3. a baffle plate is supported; 4. a built-in water pipe; 5. fastening the long steel nails; 6. externally fastening a long bolt; 7. an outer fixed seat; 8. a water outlet; 9. a steel nail mounting hole; 10. a built-in groove; 11. a sliding connection block; 12. a screen structure; 13. a ground grabbing toothed groove structure; 14. a first positioning hole; 15. a lateral sliding groove; 16. a second positioning hole; 17. a lateral sliding block; 18. an outer lateral fixation device; 19. a connecting flange; 20. a threaded hole; 21. installing a shaft; 22. a clamping hole; 23. connecting a flange with a hole; 24. a gasket; 25. a long bolt; 26. tightening the nut; 27. a bump; 28. clamping a plate; 29. a plate flange; 30. a steel plate; 31. a groove; 32. a transverse connecting plate; 33. an oblique connecting plate; 34. an outer oblique fixing device; 35. a sloping plate; 36. and (4) an oblique flange.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Referring to fig. 1, a foundation pit side wall covering protection device for civil engineering construction comprises a foundation pit 1, a side wall protection device 2, an outer transverse fixing device 18 and an outer oblique fixing device 34, wherein the outer side of the side wall of the foundation pit 1 is respectively provided with the side wall protection device 2, the side surface of the side wall protection device 2 is in an "L" shape, the side wall protection device 2 is fixedly connected with the side wall of the foundation pit 1 through a fastening long steel nail 5, the upper end of the side wall protection device 2 is fixed through an outer fixing seat 7, the lower part of the outer fixing seat 7 is fixedly connected with the upper surface of the foundation pit 1 through an outer fastening long bolt 6, the upper surface of the outer fastening long bolt 6 is welded with an end flange, the lower surface of the outer fixing seat 7 is welded with a bottom flange, the end flange and the bottom flange are both provided with a plurality of flange connection holes 23, and the end flange, an external connecting pipe hole with a built-in water pipe 4 is formed in the external fixing seat 7, the inner wall of the external connecting pipe hole is provided with a threaded hole, the external connecting pipe hole is in threaded connection with an external water pipe, a sealing strip is arranged at the threaded connection position, a water outlet 8 on the other side of the external water pipe is fixedly connected with a water pump, and the water pump is connected with a water treatment device through a pipeline;

referring to fig. 1 to 5, the side wall protection device 2 includes a supporting baffle plate 3, a built-in water pipe 4 and a built-in groove 10, the supporting baffle plate 3, the built-in water pipe 4 and the built-in groove 10 are integrated, the built-in water pipe 4 is a preset pipe hole in the processing process of the supporting baffle plate 3, a plurality of steel nail mounting holes 9 are formed in the outer surface of the supporting baffle plate 3, a ground grabbing tooth groove structure 13 is welded below the supporting baffle plate 3, the built-in water pipe 4 is arranged on the inner side of the outer surface of the supporting baffle plate 3, a filter screen structure 12 is connected below the built-in water pipe 4, the filter screen structure 12 includes a filter screen and a sand-proof water-permeable film, the outermost layer of the filter screen is fixedly connected with the sand-proof water-permeable film, so as to prevent the sand from blocking the filter screen structure 12 when the foundation pit 1 is pumped, one side of the filter screen structure 12, the built-in grooves 10 are arranged on two sides of the built-in water pipe 4, two lateral sliding grooves 15 are respectively formed in the side walls of the built-in grooves 10, first positioning holes 14 are formed in the bottom sides of the built-in grooves 10, lateral sliding blocks 17 are connected in the lateral sliding grooves 15 in a sliding mode, the lateral sliding blocks 17 are arranged on two side faces of a sliding connecting block 11, two second positioning holes 16 are formed in the inner side of the sliding connecting block 11, threaded holes 20 are formed in the sliding connecting block 11 between the second positioning holes 16, external transverse fixing devices 18 or external oblique fixing devices 34 are installed in the threaded holes 20 in a threaded mode, transverse connecting plates 32 can be fixedly connected in the middle of the external transverse fixing devices 18 through bolts, and oblique connecting plates 33 can be fixedly connected in the middle of the external oblique fixing devices 34;

referring to fig. 5-6, the outer transverse fixing device 18 includes a connecting flange 19 and a mounting shaft 21, the connecting flange 19 is welded to the mounting shaft 21, a plurality of flange connection holes 23 are formed in the connecting flange 19, mounting screw holes are formed in the connecting flange 19, a groove 31 is formed in the outer surface of the connecting flange 19, a locking hole 22 is formed in the mounting shaft 21, threads are formed in the outer side of the mounting shaft 21 and the inner side of the locking hole 22, the locking hole 22 of the mounting shaft 21 and the mounting screw hole in the connecting flange 19 are the same in size, the threads on the outer side of the mounting shaft 21 are connected with a threaded hole 20, the threads on the inner side of the locking hole 22 are connected with a locking plate 28, the locking plate 28 is welded to the connecting plate flange 29, a plurality of flange connection holes 23 are formed in the plate flange 29, a protrusion 27 matched and connected with the groove 31 is formed in the outer surface of the plate flange 29, the outer side of the plate flange is fixed through a tightening nut 26, the other end of the plate flange 29 is welded and connected with a steel plate 30, the other side of the steel plate 30 is welded and connected with another plate flange 29, the other side of the plate flange 29 is fixedly connected with an outer oblique fixing device 34 through a bolt, and a gasket 24 is installed at the joint of the long bolt 25;

referring to fig. 5-7, the outer oblique fixing device 34 includes a mounting shaft 21, an inclined plate 35 and an oblique flange 36, the mounting shaft 21 is externally provided with threads, the mounting shaft 21 is threadedly mounted in the threaded hole 20 of the sliding connection block 11, the other end of the mounting shaft 21 is welded to the inclined plate 35, the inner side of the inclined plate 35 is provided with a threaded hole, the other end of the inclined plate 35 is welded to the oblique flange 36, the oblique flange 36 is provided with a plurality of flange connection holes 23, the inner side of the oblique flange 36 is provided with a threaded hole, the threaded hole has the same size as the threaded hole of the inclined plate 35, the clamping plate 28 penetrates through the oblique flange 36, is threadedly mounted in the inclined plate 35, the oblique flange 36 and the plate flange 29 are connected through the flange connection holes 23 by long bolts 25 and fixed by tightening nuts 26 on the outer side, the other end of the plate flange, and the other side of the plate flange 29 is fixedly connected with an outer oblique fixing device 34 through bolts, and a gasket 24 is arranged at the joint of the long bolt 25.

The working principle is as follows: when the side wall of the foundation pit 1 is covered and protected, firstly, the side wall protection device 2 is placed in the foundation pit 1, the side wall protection device 2 is fixedly connected with the side wall of the foundation pit 1 at the position of a steel nail mounting hole 9 through a fastening long steel nail 5, then, a built-in water pipe 4 above the side wall protection device 2 is aligned with an external connecting pipe hole of an external fixed seat 7 and fixed, the lower part of the external fixed seat 7 is fixedly connected with the upper surface of the foundation pit 1 through an external fastening long bolt 6, when the connection plate is required to be fixed in the foundation pit, a sliding connection block 11 is placed in an internal groove 10, a lateral sliding block 17 on the sliding connection block 11 is embedded into a lateral sliding groove 15 and then slowly slides down, when the sliding block slides to the lowest end, the lateral sliding block 17 is moved to a proper position according to the requirement of the connection plate, and a second positioning hole 16 of the lateral sliding block 17, then according to the difference of the connecting plate, different fixing devices are selected:

when the transverse connecting plate 32 is fixed, an outer transverse fixing device 18 is selected, a mounting shaft 21 is in threaded connection with a threaded hole 20 in a lateral sliding block 17, a connecting flange 19 is welded on the other side of the mounting shaft 21, then a clamping plate 28 welded on one side of a plate flange 29 is in threaded connection with the inside of the mounting shaft 21, the connecting flange 19 and the plate flange 29 are connected through a flange connecting hole 23 through a long bolt 25 and fixed on the outer side through a clamping nut 26, a steel plate 30 is welded on the other end of the plate flange 29, the other plate flange 29 is welded on the other side of the steel plate 30, and the other side of the plate flange 29 is in threaded connection with the outer transverse;

when the oblique connecting plate 33 is fixed, an external oblique fixing device 34 is selected, the threaded hole 20 in the lateral sliding block 17 is in threaded connection with the mounting shaft 21, the other side of the mounting shaft 21 is in welded connection with an oblique plate 35, the other end of the oblique plate 35 is in welded connection with an oblique flange 36, then the clamping plate 28 welded on one side of the plate flange 29 penetrates through the oblique flange 36 and is in threaded connection with the oblique plate 35, the oblique flange 36 and the plate flange 29 are connected through the flange connecting hole 23 through a long bolt 25 and are fixed on the outer side through a tightening nut 26, the other end of the plate flange 29 is in welded connection with a steel plate 30, the other side of the steel plate 30 is in welded connection with the other plate flange 29, and the;

when the ponding phenomenon appears in foundation ditch 1, outside suction pump passes through outer water pipe, built-in water pipe 4 and the water in the filter screen structure 12 extraction foundation ditch 1 to in collecting outside water treatment facilities through the pipeline, the outermost fixed connection sand control permeable membrane of filter screen in the filter screen structure 12 can prevent when drawing water to foundation ditch 1, and silt blocks up the condition of filter screen structure 12 and takes place, guarantees that ponding is extracted fast in foundation ditch 1, and the hair damages foundation ditch 1 inside.

The built-in water pipe is arranged inside the supporting baffle plate, so that the side wall of the foundation pit can be effectively supported and protected, the problem of accumulated water in the foundation pit can be timely solved, the problem that the water pumping pipe needs to be repeatedly laid for many times when the accumulated water in the foundation pit is treated is avoided, the accumulated water extracted from the foundation pit can be collected into an external water treatment device to be recycled, energy is saved, the environment is protected, in addition, when the connecting plate is built inside the foundation pit, only the sliding connecting block needs to be placed in the built-in groove to slide down, and then different fixing devices are selected according to different connecting plates: the transverse connecting plate adopts an outer transverse fixing device; outer slant fixing device is chooseed for use to the slant connecting plate, and fixed mode is firm quick, and labour saving and time saving has significantly reduced the time of buildding, improves and builds efficiency to accelerate building efficiency.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a civil engineering construction is with foundation ditch lateral wall cover protection device, includes foundation ditch (1), lateral wall protection device (2), outer horizontal fixing device (18) and outer slant fixing device (34), its characterized in that: the side wall protection device (2) is arranged on the outer side of the side wall of the foundation pit (1), the side face of the side wall protection device (2) is L-shaped, the side wall protection device (2) is fixedly connected with the side wall of the foundation pit (1) through a fastening long steel nail (5), the upper end of the side wall protection device (2) is fixed through an outer fixing seat (7), and the lower part of the outer fixing seat (7) is fixedly connected with the upper surface of the foundation pit (1) through an outer fastening long bolt (6);

the side wall protection device (2) comprises a baffle plate (3), a built-in water pipe (4) and a built-in groove (10), a plurality of steel nail mounting holes (9) are formed in the outer surface of the baffle plate (3), a ground grabbing tooth socket structure (13) is welded below the baffle plate (3), the built-in water pipe (4) is arranged on the inner side of the outer surface of the baffle plate (3), a filter screen structure (12) is connected below the built-in water pipe (4), one side of the filter screen structure (12) is fixedly connected with the baffle plate (3), the other side of the filter screen structure is arranged on the outer side of the baffle plate (3), the built-in groove (10) is formed in the outer side surface of the baffle plate (3), the built-in groove (10) is formed in two sides of the built-in water pipe (4), two lateral sliding grooves (15) are respectively formed in the side wall of the built-in groove (10), a first positioning hole (14) is formed in the bottom side of the built-in, the lateral sliding blocks (17) are arranged on two side faces of the sliding connecting block (11), two second positioning holes (16) are formed in the inner side of the sliding connecting block (11), threaded holes (20) are formed in the sliding connecting block (11) between the second positioning holes (16), external transverse fixing devices (18) or external oblique fixing devices (34) are mounted in the threaded holes (20) in a threaded mode, the middle of each external transverse fixing device (18) can be fixedly connected with a transverse connecting plate (32) through a bolt, and the middle of each external oblique fixing device (34) can be fixedly connected with an oblique connecting plate (33) through a bolt;

the outer transverse fixing device (18) comprises a connecting flange (19) and an installation shaft (21), the connecting flange (19) is welded with the installation shaft (21), a plurality of flange connecting holes (23) are formed in the connecting flange (19), installation screw holes are formed in the connecting flange (19), grooves (31) are formed in the outer side surface of the connecting flange (19), clamping holes (22) are formed in the installation shaft (21), threads are arranged on the outer side of the installation shaft (21) and the inner side of the clamping holes (22), the clamping holes (22) of the installation shaft (21) are the same in size as the installation screw holes in the connecting flange (19), threaded connection threaded holes (20) in the outer portion of the installation shaft (21), threaded connection clamping plates (28) in the inner side of the clamping holes (22), the clamping plates (28) are welded with flange connecting plates (29), a plurality of flange connecting holes (23) are formed in the plate flanges (29), the outer side surface of the plate flange (29) is provided with a convex block (27) which is matched and connected with the groove (31), the connecting flange (19) and the plate flange (29) are connected through a flange connecting hole (23) through a long bolt (25) and fixed on the outer side through a tightening nut (26), the other end of the plate flange (29) is welded and connected with a steel plate (30), the other side of the steel plate (30) is welded and connected with the other plate flange (29), the other side of the plate flange (29) is fixedly connected with an outer oblique fixing device (34) through a bolt, and a gasket (24) is arranged at the joint of the long bolt (25);

the outer oblique fixing device (34) comprises an installation shaft (21), an inclined plate (35) and an oblique flange (36), wherein threads are arranged on the outer portion of the installation shaft (21), the installation shaft (21) is installed in a threaded hole (20) of the sliding connecting block (11) in a threaded manner, the other end of the installation shaft (21) is connected with the inclined plate (35) in a welded manner, a threaded hole is formed in the inner side of the inclined plate (35), the other end of the inclined plate (35) is connected with the oblique flange (36) in a welded manner, a plurality of flange connecting holes (23) are formed in the oblique flange (36), a threaded hole is formed in the inner side of the oblique flange (36) and is the same as the threaded hole of the inclined plate (35 in size, the clamping plate (28) penetrates through the oblique flange (36), the threads are installed in the inclined plate (35), and the oblique flange (, the outer side of the plate flange is fixed through a tightening nut (26), the other end of the plate flange (29) is connected with a steel plate (30) in a welding mode, the other side of the steel plate (30) is connected with the other plate flange (29) in a welding mode, the other side of the plate flange (29) is fixedly connected with an outer oblique fixing device (34) through bolts, and a gasket (24) is installed at the joint of the long bolts (25).

2. The foundation pit side wall covering protection device for civil engineering construction according to claim 1, characterized in that: the water treatment device is characterized in that an outer connecting pipe hole of a built-in water pipe (4) is formed in the outer fixing seat (7), the inner wall of the outer connecting pipe hole is arranged into a threaded hole, the outer connecting pipe hole is in threaded connection with an outer water pipe, a sealing strip is arranged at the threaded connection position, a water outlet (8) on the other side of the outer water pipe is fixedly connected with a water suction pump, and the water suction pump is connected with a water treatment device through a pipeline.

3. The foundation pit side wall covering protection device for civil engineering construction according to claim 1, characterized in that: the branch baffle (3), the built-in water pipe (4) and the built-in groove (10) are of an integrated structure, and the built-in water pipe (4) is a preset pipe hole in the processing process of the branch baffle (3).

4. The foundation pit side wall covering protection device for civil engineering construction according to claim 1, characterized in that: outer fastening stay bolt (6) upper surface welded connection end flange, outer fixing base (7) lower surface welded connection end flange all is equipped with a plurality of flange connecting holes (23) on end flange and the end flange, and end flange pass through flange connecting hole (23) fixed connection outer fixing base (7) through the bolt.

5. The foundation pit side wall covering protection device for civil engineering construction according to claim 1, characterized in that: the filter screen structure (12) comprises a filter screen and a sand-proof permeable membrane, and the outmost layer of the filter screen is fixedly connected with the sand-proof permeable membrane.