A reusable and convenient combined steel structure retaining wall device and construction method

Abstract

The present invention belongs to the field of backfill mining technology, and in particular to a reusable and portable combined steel structure retaining wall device and construction method. In view of the problems of high price and low construction efficiency of existing concrete construction, the following scheme is proposed, including a combined steel structure arranged in a tunnel, wherein the combined steel structure is composed of a skeleton component, a plurality of columns and connectors, and the plurality of columns are located on the rear side of the skeleton component; and further comprising a plurality of supporting members, and the supporting members are located on the rear side of the combined steel structure for supporting the combined steel structure. In the present invention, the combined steel structure can be easily assembled by the skeleton component, the plurality of columns and the connector, and can be disassembled otherwise. While greatly improving the efficiency of constructing the retaining wall, all components can be reused, which greatly reduces the cost of use.

Description

Technical Field

[0001] The present invention relates to the technical field of backfill mining, and in particular to a reusable and convenient combined steel structure retaining wall device and a construction method. Background Art

[0002] Backfill mining involves filling solid waste generated during the mining process directly or after processing it into the goaf. This method effectively controls ground pressure and surface subsidence, improves recovery rates, and protects surface vegetation, making it a safer, greener mining method. Currently, most mines in China require this method. Prior to backfilling, a retaining wall must be constructed at the junction of the stope and the stope-to-stope access road to ensure that the fill material remains within the goaf and prevents loss, thereby ensuring the safety and effectiveness of the backfill.

[0003] Currently, most retaining walls are constructed using artificial concrete, but this method is expensive and increases the labor intensity of workers, resulting in low construction efficiency. In addition, to enhance the strength and stability of retaining walls, some retaining walls incorporate materials such as steel mesh during construction.

[0004] In response to the above problems, the present invention document proposes a reusable and convenient combined steel structure retaining wall device and construction method. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of existing concrete construction, such as high price and low construction efficiency, and to propose a reusable and convenient combined steel structure retaining wall device and construction method.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A reusable and portable combined steel structure retaining wall device comprises a combined steel structure arranged in a laneway, the combined steel structure comprising a skeleton assembly, a plurality of columns and connectors, wherein the plurality of columns are located at the rear side of the skeleton assembly;

[0008] It also includes a plurality of supporting members, and the supporting members are located at the rear side of the combined steel structure for supporting the combined steel structure;

[0009] It also includes a diamond hexagonal chain link fence and a filter cloth. The diamond hexagonal chain link fence is located on the front side of the combined steel structure and is fixedly connected to the frame member through iron wire. The filter cloth is located on the side of the diamond hexagonal chain link fence away from the frame member, and the filter cloth is fixedly connected to the diamond hexagonal chain link fence through iron wire.

[0010] In a possible design, the skeleton assembly is composed of multiple skeleton components, which include 2 round steels, 2 inner square steel sleeves and 3 outer square steel sleeves. The ends of the two round steels that are away from each other extend to the inner walls on both sides of the tunnel respectively. The two inner square steel sleeves are slidably sleeved between the two adjacent outer square steel sleeves, and one end of the inner square steel sleeve extends into the adjacent outer square steel sleeves. The ends of the two round steels that are close to each other slide and extend into the adjacent outer square steel sleeves respectively. First pin holes are provided on both sides of the top of the outer square steel sleeves, and second pin holes are provided on both sides of the top of the inner square steel sleeves, and the second pin holes are matched with adjacent first pin holes. The same countersunk pin rod is passed through the adjacent first pin holes and the second pin holes for limiting the adjacent outer square steel sleeves and inner square steel sleeves.

[0011] In a possible design, the connector includes a first half sleeve and a second half sleeve, the first half sleeve and the second half sleeve are sleeved on the outer wall of one of the outer square steel sleeves, the second half sleeve is provided with a through groove for sleeved adjacent columns, the top and bottom of the first half sleeve are fixed with two second connecting ears, the top and bottom of the second half sleeve are fixed with two first connecting ears, adjacent first connecting ears cooperate with the second connecting ears, the same countersunk screw is penetrated in the adjacent first connecting ears and the second connecting ears, the outer wall thread sleeve of the countersunk screw is provided with a fastening nut, and the fastening screw The nut is located on the side of the second connecting ear away from the first connecting ear. The first connecting ear, the second connecting ear, the countersunk screw and the fastening nut are used to connect the column to the adjacent outer square steel sleeve; the column is connected to the adjacent outer square steel sleeve through the connector, and the first half sleeve and the second half sleeve are respectively mounted on both sides of the outer square steel sleeve, and the second half sleeve wraps the column through the through groove, and the first half sleeve and the second half sleeve are tightly connected by the countersunk screw and the fastening nut to complete the fixed installation of the outer square steel sleeve and the column. In addition, the strip plate is inserted into the strip groove to ensure the stability of the column in the through groove.

[0012] In one possible design, the supporting member includes a mounting base, a sleeve, a threaded rod and a connecting seat, the mounting base is fixed to the bottom inner wall of the tunnel by bolts, the bottom end of the sleeve is rotated on the top of the mounting base by a rotating shaft, the top end of the sleeve is rotatably connected to a circular nut block, the bottom end thread of the threaded rod passes through the circular nut block and extends into the sleeve, the rotation of the circular nut block is used to control the extension length of the threaded rod, the top end of the threaded rod is rotatably connected to one side of the connecting seat by a rotating shaft, and two limit plates are fixed on the side of the connecting seat away from the threaded rod, the two limit plates are located above and below adjacent connectors, and the two limit plates are provided with through holes for the column to pass through, and the cooperation between the limit plates and the through holes is used to align the column For further stability, a first fastening bolt and a second fastening bolt are passed through the connecting seat, and the first fastening bolt has one end away from the connecting seat and is threadedly extended into the corresponding outer square steel sleeve, and the second fastening bolt has one end away from the connecting seat and is threadedly extended into the corresponding inner square steel sleeve, which is used to increase the stability of the connecting seat and the outer square steel sleeve and the inner square steel sleeve; the mounting base is fixed to the bottom inner wall of the tunnel by bolts, and the threaded rod is extended into the sleeve by cooperation between the circular nut block and the threaded rod, and the extension length of the threaded rod is adjusted, and then the connecting seat is fixed to the adjacent outer square steel sleeve and the inner square steel sleeve by the first fastening bolt and the second fastening bolt, so as to support the outer square steel sleeve, the inner square steel sleeve and the skeleton member.

[0013] In one possible design, the outer wall of the column is provided with a plurality of anti-slip sections, and the anti-slip sections are composed of a plurality of strip grooves, and the plurality of strip grooves are arranged in a ring shape on the outer wall of the column, and a plurality of strip plates are fixed to the inner wall of the through groove away from the first half sleeve, and the strip plates cooperate with the strip grooves to increase the stability of the column in the through groove.

[0014] In a possible design, the length of the round steel is 1 m, and the length of one end of the round steel exposed in the tunnel is 20-30 cm.

[0015] In a possible design, the number of the skeleton components is at least five.

[0016] In one possible design, a water collecting trough is provided on the bottom inner wall of the tunnel, and the bottom end of the column extends into the water collecting trough to collect water filtered by the filter cloth when constructing the retaining wall, so as to facilitate subsequent discharge.

[0017] In a possible design, the top and bottom ends of the column are provided with circular grooves, and the two circular grooves are slidably connected with plug rods, and the ends of the two plug rods close to each other are fixed with sliding plates, and the sliding plates slide in the circular grooves, one side of the column is provided with two sliding strip holes, and the sliding strip holes are connected to the adjacent circular grooves, one end of the sliding plate extends into the adjacent sliding strip holes and is slidably connected to the sliding strip holes, the two sliding plates are provided with sliding grooves, the two sliding grooves are slidably connected with pressure plates, the two pressure plates are provided with guide holes, and the two guide holes are penetrated by The fixing anchor is used to fix the two pressure plates on the top inner wall and the bottom inner wall of the tunnel respectively. A guide rod is fixed to the inner wall of one side of the two sliding plates. A circular hole is provided in the two pressure plates. The circular hole passes through the guide hole. One end of the guide rod slides through the circular hole to increase the stability of the pressure plate; the pressure plate is pulled out of the sliding groove, and the insertion rod is driven out of the circular groove through the cooperation of the pressure plate and the sliding plate, and then the two insertion rods are respectively inserted into the top inner wall and the bottom inner wall of the tunnel, and the column is stably installed in the tunnel. After that, the fixing anchor is passed through the guide hole and inserted into the inner wall of the tunnel to ensure the stability of the insertion rod.

[0018] In this application, a construction method of a reusable and portable combined steel structure retaining wall device comprises the following steps:

[0019] S1. Assembly of round steel and square steel sleeves: Drive 1m long round steel into the inner walls of both sides of the tunnel, 5 pieces on each side, leaving 20-30cm exposed; put the outer square steel sleeve on the round steel, and then put the inner square steel sleeve on the other side of the outer square steel sleeve, and so on; use three outer square steel sleeves, two inner square steel sleeves, and two round steels in each row; after putting them together, use the countersunk pin rod to match the first pin hole and the second pin hole to complete the assembly of the skeleton component of the skeleton member.

[0020] S2. Column installation and fixation: Install the column on the rear side of the skeleton member; pull out the pressure plate, and use the pressure plate and sliding plate to drive the insertion rod out of the circular groove, insert it into the top and bottom inner walls of the tunnel, and install the column stably; insert the fixed anchor through the guide hole into the inner wall of the tunnel to ensure the stability of the insertion rod.

[0021] S3. Connect the column with the outer square steel sleeve: Connect the column with the adjacent outer square steel sleeve through the connector; put the first half sleeve and the second half sleeve on both sides of the outer square steel sleeve respectively, and wrap the column with the second half sleeve through the through groove; tightly connect the first half sleeve and the second half sleeve through the countersunk screw and the fastening nut to complete the fixed installation; insert the strip plate into the strip groove to ensure that the column is stable in the through groove.

[0022] S4. Fix the connecting seat to the square steel sleeve: When installing the column, put the connecting seat on the outer wall of the column through the limit plate; fix the installation base plate to the inner wall of the bottom of the tunnel with bolts; use the circular nut block to cooperate with the threaded rod to extend the threaded rod into the sleeve and adjust the length; fix the connecting seat to the adjacent outer square steel sleeve and inner square steel sleeve with the first fastening bolt and the second fastening bolt to support the skeleton component.

[0023] S5. Installation of chain link fence, filter cloth and water collection trough: Install the diamond hexagonal chain link fence on the front side of the skeleton component through iron wire, and install the filter cloth on the front side of the diamond hexagonal chain link fence through iron wire; use tailings to cement the filling material to construct the filling retaining wall; open a water collection trough at the bottom of the tunnel, and extend the bottom end of the column into the water collection trough, which is located on the rear side of the skeleton component; the filtered water is collected in the water collection trough and discharged to the outside through a hose.

[0024] Beneficial effects: In the present invention, the ends of the two round steels that are away from each other extend to the inner walls on both sides of the tunnel respectively, the two inner square steel sleeves are respectively slidably sleeved between the two adjacent outer square steel sleeves, and the ends of the two round steels that are close to each other slide and extend into the corresponding outer square steel sleeves respectively; through the cooperation of the round steel, the outer square steel sleeves and the inner square steel sleeves, the skeleton components can be easily assembled, which greatly improves the efficiency of constructing the retaining wall, can be easily disassembled, and can be reused later, which greatly reduces the cost of retaining wall construction;

[0025] In the present invention, the first half sleeve and the second half sleeve are arranged on the outer wall of the outer square steel sleeve adjacent to the column, and a through groove is provided in the second half sleeve for sleeve-mounting the column, and two second connecting ears are fixed on the top and bottom of the first half sleeve, and two first connecting ears are fixed on the top and bottom of the second half sleeve; the column and the adjacent outer square steel sleeve are connected by a connector, and the first half sleeve and the second half sleeve are respectively sleeved on both sides of the outer square steel sleeve, and the second half sleeve wraps the column through the through groove, and the first half sleeve and the second half sleeve are tightly connected by the countersunk screw and the fastening nut, thereby completing the fixed installation of the outer square steel sleeve and the column, and the installation and disassembly are extremely simple, thereby improving the efficiency of constructing the retaining wall and reducing the construction cost;

[0026] In the present invention, the bottom end of the sleeve rotates on the top of the mounting base plate, and the top end of the sleeve is rotatably connected to a circular nut block, and the bottom end thread of the threaded rod passes through the circular nut block and extends into the sleeve, and the threaded rod is rotatably connected to one side of the connecting seat, and two limit plates are fixed on the side of the connecting seat away from the threaded rod, and the two limit plates are provided with through holes, and the connecting seat is penetrated by a first fastening bolt and a second fastening bolt; the mounting base is fixed to the bottom inner wall of the tunnel by bolts, and the threaded rod is extended into the sleeve by cooperation with the circular nut block and the threaded rod, and the extension length of the threaded rod is adjusted, and then the connecting seat is fixed to the adjacent outer square steel sleeve and the inner square steel sleeve by the first fastening bolt and the second fastening bolt, so that the outer square steel sleeve, the inner square steel sleeve and the skeleton component can be supported, thereby greatly improving the stability of the combined steel structure and avoiding leakage of filling material.

[0027] In the present invention, the modular steel structure can be easily assembled and disassembled by means of a skeleton component, a plurality of columns and connectors. While greatly improving the efficiency of constructing the retaining wall, the skeleton component, a plurality of columns and connectors can also be reused, greatly reducing the cost of constructing the retaining wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the three-dimensional structure of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0029] Figure 2 A schematic three-dimensional cross-sectional view of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0030] Figure 3 A schematic diagram of a three-dimensional exploded structure of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0031] Figure 4 A schematic diagram of a three-dimensional exploded structure of a skeleton component of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0032] Figure 5 A schematic diagram of the three-dimensional structure of the connector, columns, and outer square steel sleeve of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0033] Figure 6 A schematic diagram of a three-dimensional exploded structure of a connector of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0034] Figure 7A schematic diagram of the three-dimensional structure of a connecting seat, a threaded rod, and an outer square steel sleeve of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0035] Figure 8 A schematic diagram of a three-dimensional exploded structure of a connecting seat and a connector of a reusable and portable combined steel structure retaining wall device provided in Example 1 of the present invention;

[0036] Figure 9 A schematic diagram of a three-dimensional exploded structure of columns and rods of a reusable and portable combined steel structure retaining wall device provided in Example 2 of the present invention;

[0037] Figure 10 for Figure 9 Enlarged structural diagram at point A in the middle.

[0038] In the figure: 1, tunnel; 2, skeleton member; 3, round steel; 4, outer square steel sleeve; 5, inner square steel sleeve; 6, first pin hole; 7, second pin hole; 8, countersunk pin rod; 9, column; 10, strip groove; 11, round groove; 12, sliding strip hole; 13, insertion rod; 14, sliding plate; 15, sliding groove; 16, guide rod; 17, pressure plate; 18, fixing anchor; 19, connector; 20, first half sleeve; 21, second half sleeve; 22, through-slot; 23. Strip plate; 24. First connecting ear; 25. Second connecting ear; 26. Countersunk screw; 27. Fastening nut; 28. Support member; 29. ​​Mounting base; 30. Sleeve; 31. Threaded rod; 32. Round nut block; 33. Connecting seat; 34. Limiting plate; 35. Through hole; 36. First fastening bolt; 37. Second fastening bolt; 38. Diamond hexagonal chain link fence; 39. Filter cloth; 40. Water collecting trough; 41. Round hole; 42. Guide hole. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0040] Example 1: Reference Figure 1-Figure 3 , a retaining wall device, relates to the field of filling mining technology, and the device is mainly composed of a combined steel structure, a supporting member 28, a diamond hexagonal chain link fence 38 and a filter cloth 39.

[0041] Reference Figure 3 and Figure 4The combined steel structure is the core part of the device, which consists of a skeleton assembly, a plurality of columns 9 and connectors 19. The skeleton assembly is further assembled from a plurality of skeleton components 2. Each skeleton component 2 includes two round steels 3, two inner square steel sleeves 5 and three outer square steel sleeves 4. One end of the two round steels 3 extends to the inner walls on both sides of the tunnel 1, respectively, to fix the position of the skeleton component 2. The two inner square steel sleeves 5 are respectively slidably sleeved between the two adjacent outer square steel sleeves 4, and one end of the inner square steel sleeve 5 extends to the inside of the adjacent outer square steel sleeve 4. At the same time, the other ends of the two round steels 3 also slide and extend into the adjacent outer square steel sleeves 4, thereby achieving stable support of the skeleton component 2 in the tunnel 1.

[0042] Reference Figure 4 To secure the relative positions of the inner and outer square steel sleeves 5 and 4, first pin holes 6 are provided on both sides of the top of the outer and inner square steel sleeves 4, and second pin holes 7 are provided on both sides of the top of the inner square steel sleeve 5. When the inner square steel sleeve 5 slides to the proper position, the adjacent first and second pin holes 6 and 7 will align, at which point a countersunk pin 8 can be inserted to lock the relative positions of the two.

[0043] Reference Figure 5 and Figure 6 The connector 19 is used to connect the column 9 to the outer square steel sleeve 4. The connector 19 includes a first half sleeve 20 and a second half sleeve 21, which are respectively sleeved on both sides of the outer square steel sleeve 4. The second half sleeve 21 is provided with a through groove 22 for sleeved onto the column 9. In order to tightly connect the first half sleeve 20 and the second half sleeve 21 together, two second connecting ears 25 are fixed to the top and bottom of the first half sleeve 20, and two first connecting ears 24 are fixed to the top and bottom of the second half sleeve 21. The adjacent first connecting ears 24 cooperate with the second connecting ears 25 and are locked by the through countersunk screw 26 and the fastening nut 27. In this way, the column 9 is firmly connected to the outer square steel sleeve 4.

[0044] Reference Figure 3 、 Figure 7 and Figure 8On the rear side of the modular steel structure, multiple support members 28 are installed to provide additional support and enhance its stability. The support members 28 primarily consist of a mounting base 29, a sleeve 30, a threaded rod 31, and a connecting base 33. During the actual installation process, the mounting base 29 is first securely fastened to the bottom inner wall of the tunnel 1 with bolts to ensure its stability and load-bearing capacity. Next, the bottom end of the sleeve 30 is pivotally connected to the top of the mounting base 29 via a rotating shaft, allowing the sleeve 30 to be rotated and adjusted within a certain range. A circular nut block 32 is pivotally connected to the top of the sleeve 30. This circular nut block 32 cooperates with the threaded rod 31. The bottom end of the threaded rod 31 threads through the circular nut block 32 and extends into the interior of the sleeve 30. To adjust the extension length of the threaded rod 31, simply rotate the circular nut block 32. Due to the meshing action of the threads, the threaded rod 31 moves up and down within the sleeve 30 to achieve the desired length.

[0045] Reference Figure 7 and Figure 8 , the top end of the threaded rod 31 is rotatably connected to one side of the connecting seat 33 through a rotating shaft. In this way, the connecting seat 33 can be adjusted in angle within a certain range to adapt to the support requirements in different directions. Two limit plates 34 are fixed on the side of the connecting seat 33 away from the threaded rod 31. These two limit plates 34 are located above and below the adjacent connectors 19 to increase the stability of the column 9. Each limit plate 34 is provided with a through hole 35 for the column 9 to pass through. In this way, when the column 9 passes through the through hole 35, it will be constrained by the limit plate 34, making it more stable.

[0046] Reference Figure 7 and Figure 8 To further enhance the stability of the connection base 33, the outer square steel sleeve 4, and the inner square steel sleeve 5, a first fastening bolt 36 and a second fastening bolt 37 are threaded through the connection base 33. After the connection base 33 is adjusted to the desired position, the end of the first fastening bolt 36, which is farther from the connection base 33, is threadedly extended into the corresponding outer square steel sleeve 4. The end of the second fastening bolt 37, which is farther from the connection base 33, is threadedly extended into the corresponding inner square steel sleeve 5. By tightening these two fastening bolts, the connection base 33 is securely fixed to the outer square steel sleeve 4 and the inner square steel sleeve 5.

[0047] Reference Figure 5 and Figure 6Next, the anti-slip structure of the column 9 is described according to claim 5. A plurality of anti-slip groove segments are provided on the outer wall of the column 9. These anti-slip groove segments are composed of a plurality of strip grooves 10, and the plurality of strip grooves 10 are arranged in a ring shape on the outer wall of the column 9. At the same time, a plurality of strip plates 23 are fixed on the inner wall of the through-groove 22 away from the first half sleeve 20. These strip plates 23 cooperate with the strip grooves 10. When the column 9 passes through the through-groove 22, the strip plates 23 will be embedded in the strip groove 10, thereby further increasing the stability of the column 9 in the through-groove 22.

[0048] The length of the round steel 3 is 1 meter, and the length of one end exposed in the tunnel 1 is 30 centimeters. Such a design not only ensures the load-bearing capacity of the round steel 3, but also facilitates later installation and adjustment.

[0049] Reference Figure 3 The number of the skeleton members 2 is 5, and these skeleton members 2 are combined together in a predetermined arrangement to form the main supporting structure of the retaining wall.

[0050] Reference Figure 2 A water collection trough 40 is installed on the inner wall of the bottom of the tunnel 1. This trough 40 is designed to collect water filtered by the filter cloth 39 during the construction of the retaining wall. As the water flows through the filter cloth 39, impurities are filtered out, and clean water flows into the trough 40. This collected water can then be discharged or reused.

[0051] Through the above-described embodiment, the uprights 9 can be conveniently installed within the tunnel 1, and the coordination of the anchors 18 and the plungers 13 ensures the stability of the retaining wall device. Furthermore, the design of the sump 40 enables the efficient collection and utilization of filtered water, improving resource utilization. The entire device is compact, easy to operate, and readily disassembled and reused, offering high practical value.

[0052] A diamond-shaped hexagonal chain link fence 38 is fixed to the front of the modular steel structure via wire. A filter cloth 39 is also fixed to the side of the diamond-shaped hexagonal chain link fence 38 away from the modular steel structure via wire. The combination of the diamond-shaped hexagonal chain link fence 38 and the filter cloth 39 can block large objects while allowing water to pass through, achieving excellent filtering effects.

[0053] The device is not only structurally stable and easy to assemble and disassemble, but also has a combination of the diamond-shaped hexagonal chain link fence 38 and the filter cloth 39, which provides both a barrier function and a good filtering effect. In addition, all components are reusable, greatly reducing the cost of use.

[0054] Example 2: Reference Figure 9 and Figure 10, an improvement based on Example 1: the column 9 serves as an important supporting component of the retaining wall device, and a circular groove 11 is provided at the top and bottom ends thereof. In the circular groove 11, an insertion rod 13 is slidably connected. One end of the insertion rod 13 is slidably connected to the side wall of the circular groove 11 through a sliding plate 14, and the sliding plate 14 can slide freely in the circular groove 11. In order to enable the insertion rod 13 to be easily extended or retracted into the circular groove 11, two sliding bar holes 12 are provided on one side of the column 9, and these sliding bar holes 12 are connected to the adjacent circular grooves 11. Therefore, when the sliding plate 14 slides in the circular groove 11, one end thereof can extend into the adjacent sliding bar hole 12, and maintain a stable sliding trajectory through the sliding connection with the sliding bar hole 12.

[0055] refer to Figure 9 and Figure 10 A sliding groove 15 is provided in the sliding plate 14 for accommodating the pressure plate 17. The pressure plate 17 can slide freely in the sliding groove 15 to facilitate subsequent fixing operations. A guide hole 42 is provided in the pressure plate 17 for passing through the fixing anchor 18. When it is necessary to fix the column 9 in the tunnel 1, the pressure plate 17 can be pulled out of the sliding groove 15 first, and then the insertion rod 13 can be driven out of the circular groove 11 through the cooperation of the pressure plate 17 and the sliding plate 14. At this time, the two insertion rods 13 can be respectively inserted into the top inner wall and the bottom inner wall of the tunnel 1, so that the column 9 can be stably installed in the tunnel 1.

[0056] refer to Figure 9 and Figure 10 To ensure the stability of the insertion rod 13, a fixing anchor 18 is also required. The fixing anchor 18 can pass through the guide hole 42 in the pressure plate 17 and be inserted into the inner wall of the tunnel 1. In this way, the fixing anchor 18 can firmly fix the pressure plate 17 and the insertion rod 13 in the tunnel 1, thereby ensuring the stability of the column 9.

[0057] refer to Figure 9 and Figure 10 Furthermore, to enhance the stability of the pressure plate 17, a guide rod 16 is fixed to the inner wall of one side of the sliding plate 14. A circular hole 41 is provided in the pressure plate 17 to match the guide rod 16. When the pressure plate 17 slides in the sliding groove 15, one end of the guide rod 16 can slide through the circular hole 41, thereby providing guidance and stability.

[0058] The upright column 9 can be arranged on the front side of the frame member 2 or on the rear side of the frame member 2 .

[0059] A construction method for a reusable and portable combined steel structure retaining wall device comprises the following steps:

[0060] S1. Drive 1m long round steel 3 into the inner walls of both sides of the tunnel 1, 5 pieces on each side, and the round steel 3 needs to be exposed 20-30cm. Put the outer square steel sleeve 4 on the round steel 3, then put the inner square steel sleeve 5 into the other side of the outer square steel sleeve 4, and then put another outer square steel sleeve 4 on the other side of the previous inner square steel sleeve 5, and so on. Each row uses three outer square steel sleeves 4, two inner square steel sleeves 5, and two round steels 3. After the outer square steel sleeves 4 and the inner square steel sleeves 5 are completed, the outer square steel sleeves 4 and the inner square steel sleeves 5 are defined by the cooperation of the countersunk pin rod 8 with the first pin hole 6 and the second pin hole 7, thereby completing the assembly of the skeleton component of the skeleton member 2;

[0061] S2. Next, the column 9 is installed on the rear side of the frame member 2. The pressure plate 17 is pulled out of the sliding groove 15. The pressure plate 17 and the sliding plate 14 cooperate to drive the insertion rod 13 to move out of the circular groove 11. Then, the two insertion rods 13 are respectively inserted into the top inner wall and the bottom inner wall of the tunnel 1. The column 9 is stably installed in the tunnel 1. Then, the fixing anchor 18 is inserted through the guide hole 42 into the inner wall of the tunnel 1 to ensure the stability of the insertion rod 13.

[0062] S3. Connect the column 9 to the adjacent outer square steel jacket 4 using the connector 19. Place the first half jacket 20 and the second half jacket 21 on either side of the outer square steel jacket 4, respectively. The second half jacket 21 wraps around the column 9 through the through-groove 22. Tightly connect the first half jacket 20 and the second half jacket 21 using the countersunk screw 26 and the fastening nut 27. This completes the fixed installation of the outer square steel jacket 4 and the column 9. Furthermore, insert the strip plate 23 into the strip groove 10 to ensure the stability of the column 9 within the through-groove 22.

[0063] S4. In addition, when installing the column 9, the corresponding connecting seat 33 is mounted on the outer wall of the column 9 through the limiting plate 34; then the mounting base 29 is fixed to the bottom inner wall of the tunnel 1 by bolts, and the threaded rod 31 is extended into the sleeve 30 by the cooperation of the circular nut block 32 and the threaded rod 31. The extension length of the threaded rod 31 is adjusted, and then the connecting seat 33 is fixed to the adjacent outer square steel sleeve 4 and inner square steel sleeve 5 by the first fastening bolt 36 and the second fastening bolt 37, thereby being able to support the outer square steel sleeve 4, the inner square steel sleeve 5 and the skeleton member 2;

[0064] S5. Install the diamond hexagonal chain link fence 38 on the front side of the skeleton component through the iron wire, install the filter cloth 39 on the front side of the diamond hexagonal chain link fence 38 through the iron wire, and then use the tailings cemented filling material to construct the filling retaining wall. In addition, a water collection tank 40 is opened at the bottom of the tunnel 1, and the bottom end of the column 9 extends into the water collection tank 40, and the water collection tank 40 is located on the rear side of the skeleton component 2. Therefore, the water filtered by the diamond hexagonal chain link fence 38 and the filter cloth 39 in the later stage is collected in the water collection tank 40, and the collected water is discharged to the outside through a hose.

[0065] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A reusable and portable combined steel structure retaining wall device, characterized in that: The invention relates to a combined steel structure arranged in a tunnel (1), wherein the combined steel structure is composed of a skeleton component, a plurality of columns (9) and a connector (19), wherein the plurality of columns (9) are located at the rear side of the skeleton component; the skeleton component is composed of a plurality of skeleton members (2), wherein the skeleton members (2) include two round steels (3), two inner square steel sleeves (5) and three outer square steel sleeves (4), wherein the ends of the two round steels (3) that are away from each other extend to the inner walls of both sides of the tunnel (1), and the two inner square steel sleeves (5) are respectively slidably sleeved between two adjacent outer square steel sleeves (4), and the inner square steel sleeves (5) are respectively slidably sleeved between two adjacent outer square steel sleeves (4). One end of the round steel sleeve (5) extends into the adjacent outer square steel sleeve (4), and the ends of the two round steels (3) close to each other slide and extend into the adjacent outer square steel sleeve (4), and first pin holes (6) are provided on both sides of the top of the outer square steel sleeve (4), and second pin holes (7) are provided on both sides of the top of the inner square steel sleeve (5), and the second pin holes (7) are matched with the adjacent first pin holes (6), and the same countersunk pin rod (8) runs through the adjacent first pin holes (6) and the second pin holes (7), which is used to limit the adjacent outer square steel sleeve (4) and the inner square steel sleeve (5); The connector (19) comprises a first half sleeve (20) and a second half sleeve (21), wherein the first half sleeve (20) and the second half sleeve (21) are sleeved on the outer wall of one of the outer square steel sleeves (4), and a through slot (22) is provided in the second half sleeve (21) for sleeve-fitting adjacent columns (9), and two second connecting ears (25) are fixed on the top and bottom of the first half sleeve (20), and two first connecting ears (24) are fixed on the top and bottom of the second half sleeve (21), and adjacent first connecting ears (24) are fixed on the top and bottom of the second half sleeve (21). Cooperating with the second connecting ear (25), the same countersunk screw (26) is passed through the adjacent first connecting ear (24) and the second connecting ear (25), the outer wall thread sleeve of the countersunk screw (26) is provided with a fastening nut (27), and the fastening nut (27) is located on the side of the second connecting ear (25) away from the first connecting ear (24), and the cooperation of the first connecting ear (24), the second connecting ear (25), the countersunk screw (26) and the fastening nut (27) is used to connect the column (9) to the adjacent outer square steel sleeve (4); The invention also includes a plurality of support members (28), and the support members (28) are located at the rear side of the combined steel structure for supporting the combined steel structure; the support members (28) include a mounting base (29), a sleeve (30), a threaded rod (31) and a connecting seat (33), the mounting base (29) is fixed to the bottom inner wall of the tunnel (1) by bolts, the bottom end of the sleeve (30) is rotated on the top of the mounting base (29) through a rotating shaft, the top end of the sleeve (30) is rotatably connected to a circular nut block (32), the bottom end thread of the threaded rod (31) passes through the circular nut block (32) and extends into the sleeve (30), the rotation of the circular nut block (32) is used to control the extension length of the threaded rod (31), the top end of the threaded rod (31) is rotatably connected to one side of the connecting seat (33) through the rotating shaft, and the connecting seat (33) Two limiting plates (34) are fixed on one side away from the threaded rod (31), and the two limiting plates (34) are located above and below the adjacent connectors (19). The two limiting plates (34) are provided with through holes (35) for the pillars (9) to pass through. The cooperation between the limiting plates (34) and the through holes (35) is used to further stabilize the pillars (9). A first fastening bolt (36) and a second fastening bolt (37) are passed through the connecting seat (33). The first fastening bolt (36) is threadedly extended from one end of the connecting seat (33) to the corresponding outer square steel sleeve (4), and the second fastening bolt (37) is threadedly extended from one end of the connecting seat (33) to the corresponding inner square steel sleeve (5), so as to increase the stability of the connecting seat (33) and the outer square steel sleeve (4) and the inner square steel sleeve (5); It also includes a rhombus hexagonal chain link fence (38) and a filter cloth (39), wherein the rhombus hexagonal chain link fence (38) is located on the front side of the combined steel structure and is fixedly connected to the frame member (2) through iron wire, and the filter cloth (39) is located on a side of the rhombus hexagonal chain link fence (38) away from the frame member (2), and the filter cloth (39) is fixedly connected to the rhombus hexagonal chain link fence (38) through iron wire.

2. A reusable portable combined steel structure retaining wall device according to claim 1, characterized in that: The outer wall of the column (9) is provided with a plurality of anti-slip sections, the anti-slip sections are composed of a plurality of strip grooves (10), and the plurality of strip grooves (10) are arranged in a ring shape on the outer wall of the column (9), and a plurality of strip plates (23) are fixed to the inner wall of the through groove (22) away from the first half sleeve (20), and the strip plates (23) cooperate with the strip grooves (10) to increase the stability of the column (9) in the through groove (22).

3. A reusable portable combined steel structure retaining wall device according to claim 2, characterized in that: The length of the round steel (3) is 1 m, and the length of one end of the round steel (3) exposed in the tunnel (1) is 20-30 cm.

4. The reusable portable combined steel structure retaining wall device according to claim 3, characterized in that: The number of the skeleton components (2) is at least 5.

5. The reusable portable combined steel structure retaining wall device according to claim 4, characterized in that: The bottom inner wall of the tunnel (1) is provided with a water collecting trough (40), and the bottom end of the column (9) extends into the water collecting trough (40) for collecting water filtered by the filter cloth (39) when the retaining wall is constructed, so as to facilitate subsequent discharge.

6. The reusable portable combined steel structure retaining wall device according to claim 5, characterized in that: The top and bottom ends of the column (9) are both provided with circular grooves (11), and the two circular grooves (11) are both slidably connected with an insertion rod (13), and the ends of the two insertion rods (13) close to each other are fixed with a sliding plate (14), and the sliding plate (14) slides in the circular groove (11), and one side of the column (9) is provided with two sliding strip holes (12), and the sliding strip holes (12) are connected to the adjacent circular grooves (11), and one end of the sliding plate (14) extends into the adjacent sliding strip hole (12) and is slidably connected to the sliding strip hole (12), and the two sliding plates (14) are both provided with a sliding groove (15) , a pressure plate (17) is slidably connected in the two sliding grooves (15), a guide hole (42) is provided in the two pressure plates (17), and a fixing anchor (18) is passed through the two guide holes (42) for fixing the two pressure plates (17) on the top inner wall and the bottom inner wall of the tunnel (1) respectively, a guide rod (16) is fixed to the inner wall of one side of the two sliding plates (14), and a circular hole (41) is provided in the two pressure plates (17), and the circular hole (41) passes through the guide hole (42), and one end of the guide rod (16) slides through the circular hole (41) to increase the stability of the pressure plate (17).

7. A construction method using the reusable portable composite steel structure retaining wall device according to claim 6, characterized in that: The following steps are involved: S1. Assembling round steel and square steel sleeves: drive 1m long round steel (3) into the inner wall of both sides of the tunnel (1), 5 pieces on each side, with 20-30cm exposed; put the outer square steel sleeve (4) on the round steel (3), and then put the inner square steel sleeve (5) on the other side of the outer square steel sleeve (4), and so on; use three outer square steel sleeves (4), two inner square steel sleeves (5), and two round steel (3) in each row; after the sleeves are assembled, the countersunk pin rod (8) is matched with the first pin hole (6) and the second pin hole (7) to complete the assembly of the skeleton component of the skeleton member (2); S2. Installation and fixation of the column: Install the column (9) on the rear side of the skeleton member (2); pull out the pressure plate (17), and drive the insertion rod (13) to move out of the circular groove (11) through the pressure plate (17) and the sliding plate (14), and insert it into the top and bottom inner walls of the tunnel (1) to stably install the column (9); insert the fixing anchor (18) through the guide hole (42) into the inner wall of the tunnel (1) to ensure the stability of the insertion rod (13); S3, the column is connected to the outer square steel sleeve: the column (9) is connected to the adjacent outer square steel sleeve (4) through the connector (19); the first half sleeve (20) and the second half sleeve (21) are respectively sleeved on both sides of the outer square steel sleeve (4), and the second half sleeve (21) wraps the column (9) through the through groove (22); the first half sleeve (20) and the second half sleeve (21) are tightly connected through the countersunk screw (26) and the fastening nut (27) to complete the fixed installation; the strip plate (23) is inserted into the strip groove (10) to ensure that the column (9) is stable in the through groove (22); S4, the connection seat and the square steel sleeve are fixed: when installing the column (9), the connection seat (33) is sleeved on the outer wall of the column (9) through the limit plate (34); the installation base plate (29) is fixed to the inner wall of the bottom of the tunnel (1) by bolts; the threaded rod (31) is extended into the sleeve (30) by the circular nut block (32) and the threaded rod (31) to adjust the length; the connection seat (33) is fixed to the adjacent outer square steel sleeve (4) and the inner square steel sleeve (5) by the first fastening bolt (36) and the second fastening bolt (37) to support the skeleton member (2); S5. Chain link fence, filter cloth installation and water collection tank setting: install the diamond hexagonal chain link fence (38) on the front side of the skeleton component through iron wire, and install the filter cloth (39) on the front side of the diamond hexagonal chain link fence (38) through iron wire; use tailings to cement the filling material to construct the filling retaining wall; open a water collection tank (40) at the bottom of the tunnel (1), and the bottom end of the column (9) extends into the water collection tank (40), and the water collection tank (40) is located at the rear side of the skeleton component (2); the filtered water is collected in the water collection tank (40) and discharged to the outside through a hose.

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