Supporting structure for tunnel construction in water-rich soft and hard composite stratum

Abstract

The utility model relates to a supporting structure for water-rich soft and hard composite stratum tunnel construction. The supporting structure comprises a base, a height adjusting mechanism and a top supporting mechanism. The top supporting mechanism is installed on the base through the height adjusting mechanism and comprises an arc-shaped supporting plate, a liquid collecting box and a drainage assembly, the shape of the arc-shaped supporting plate corresponds to that of the top of a tunnel, the liquid collecting box is arranged on the inner side of the arc-shaped supporting plate, and water seepage holes are formed in the arc-shaped supporting plate and communicated with the liquid collecting box. The drainage assembly is installed on the liquid collecting box. The utility model discloses a supporting structure capable of adjusting the supporting height and collecting and discharging underground water, and belongs to the field of supporting structures for tunnel construction.

Description

Technical Field

[0001] The utility model relates to the field of supporting structures for tunnel construction, in particular to a supporting structure for tunnel construction in water-rich soft and hard composite strata. Background Art

[0002] Water-rich soft-hard composite strata refer to strata where groundwater and soft and hard rock strata coexist. In this stratum, soft rock strata and hard rock strata alternate or are interspersed with each other, and contain abundant groundwater resources. In water-rich soft-hard composite strata, soft rock strata are usually composed of silt, clay, mudstone, etc., which have weak physical properties and low mechanical strength, and are easily eroded and transformed by groundwater. Hard rock strata are composed of hard sandstone, limestone, granite, etc., which have high mechanical strength and stability. Groundwater in water-rich soft-hard composite strata refers to the water source existing in the stratum, which can penetrate and flow in the gaps between soft and hard rock strata and the pores of soft and hard rock strata. The abundance of groundwater resources is very important for the development and utilization of water resources. The extraction of groundwater resources can be used as mineral water, irrigation water, drinking water, etc.

[0003] At present, in the process of supporting tunnel construction in water-rich soft and hard composite strata, the existing tunnel construction support equipment has a relatively complex structure, is not practical, is not convenient for workers to use and use during construction, and is not convenient to adjust. In addition, most of the support equipment only supports tunnel construction, and lacks a support structure that can collect water resources in water-rich soft and hard composite strata, resulting in difficulty in fully utilizing groundwater resources in water-rich soft and hard composite strata. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the purpose of the utility model is to provide a support structure for tunnel construction in water-rich soft and hard composite strata, which can collect and discharge groundwater.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A support structure for tunnel construction in water-rich soft and hard composite strata, comprising a base, a height adjustment mechanism, and a top support mechanism; the top support mechanism is installed on the base through the height adjustment mechanism, the top support mechanism comprises an arc-shaped support plate, a liquid collecting box and a drainage component, the shape of the arc-shaped support plate corresponds to the shape of the tunnel top, the liquid collecting box is arranged on the inner side of the arc-shaped support plate, the arc-shaped support plate is provided with seepage holes, the seepage holes are connected to the liquid collecting box, and the drainage component is installed on the liquid collecting box.

[0007] As a preferred embodiment, the liquid collecting box includes a bottom plate and an end cover, and a water outlet is arranged on the bottom plate; the drainage assembly includes a water pump, a drain pipe, and a filter; the water pump is connected below the water outlet, the drain pipe is connected below the water pump, and a filter surrounding the water outlet is arranged on the top surface of the bottom plate; the top surface of the bottom plate is high on both sides and low in the middle, an opening is arranged in the center of the bottom plate, and the end cover is connected below the opening.

[0008] As a preferred embodiment, the cross section of the arc-shaped support plate is an arc shape with the opening facing downward; the top support mechanism also includes two arc-shaped support rods, which are arranged front and back; the arc top surface of the arc-shaped support rod is fixedly fitted with the arc bottom surface of the arc-shaped support plate, the front end of the arc-shaped support rod located in the front is flush with the front end of the arc-shaped support plate, and the rear end of the arc-shaped support rod located in the rear is flush with the rear end of the arc-shaped support plate; the arc-shaped support plate and the arc-shaped support rod are both symmetrical; the left and right lower ends of the arc-shaped support rod are respectively fixed with a support block, and a cross bar is fixed between the two support blocks under the same arc-shaped support rod. After using this structure, it is ensured that the arc-shaped support plate has sufficient support strength.

[0009] As a preference, a first reinforcing rib is provided between the arc bottom surface of the front arc-shaped support rod and the corresponding upper end surface of the lower cross bar, and a first reinforcing rib is provided between the arc bottom surface of the rear arc-shaped support rod and the corresponding upper end surface of the lower cross bar.

[0010] As a preferred embodiment, the height adjustment mechanism includes four columns, four guide rods, and four hydraulic push rods; a guide hole for inserting a guide rod is provided on the upper end surface of a column to realize the upward and downward guiding movement of the guide rod in the column; the two guide rods located in the front row are respectively fixedly connected to the two support blocks under the front arc-shaped support rod, and the two guide rods located in the rear row are respectively fixedly connected to the two support blocks under the rear arc-shaped support rod; the hydraulic push rods are installed between the base and the cross bar, and two hydraulic push rods are symmetrically arranged under each cross bar.

[0011] As a preferred embodiment, the height adjustment mechanism further includes four positioning plates, and a positioning plate is fixedly connected between a hydraulic push rod and the cross bar.

[0012] As a preferred embodiment, the pillars are rectangular, and guide grooves are provided on the upper parts of the side walls facing each other of the two pillars in the front row, and guide grooves are provided on the upper parts of the side walls facing each other of the two pillars in the back row, and a second reinforcing rib is provided between the lower part of the side wall of each pillar with the guide groove and the base; a third reinforcing rib is provided between the cross bar and the guide bar, and the third reinforcing rib passes through the guide groove.

[0013] As a preferred embodiment, the arc-shaped support rod is integrally arranged with the two corresponding guide rods below; the support block is provided with fixing holes for the guide rods to pass through. With this structure, processing and installation are more convenient.

[0014] As a preferred embodiment, the base is composed of two flat plates, which are symmetrically arranged on the left and right sides, and a space is left between the two flat plates to form a channel; the height adjustment mechanism is symmetrically installed on the two flat plates.

[0015] As a preferred embodiment, the supporting structure also includes four supporting mechanisms; the supporting mechanism includes a fixed plate, a screw, a foot pad and a turntable; the screw passes through the threaded through hole of the fixed plate, the upper end of the screw is fixed to the turntable, and the lower end of the screw is fixed to the foot pad; the fixed plates of the four supporting mechanisms are symmetrically installed on the side walls of the base in front, back, left and right directions; a universal wheel is arranged under the base.

[0016] The utility model has the following advantages:

[0017] 1. The utility model provides seepage holes and a liquid collecting box on the arc-shaped support plate, so that the support structure can conveniently collect groundwater resources during the support operation and discharge them for utilization through the drainage component.

[0018] 2. The bottom plate of the liquid collecting tank is set as a slope to separate the mud and water. The silt will settle to the center under the guidance of the slope of the bottom plate, and the silt can be easily discharged by opening the end cover. The filter screen ensures that the silt does not block the water outlet. The water resources are pumped out through the drainage pipe driven by the water pump for people to use, making the support structure more practical.

[0019] 3. The height of the arc-shaped support plate is adjusted by a height adjustment mechanism to facilitate support operations for tunnels in water-rich soft and hard composite strata at different heights. It is suitable for tunnels in water-rich soft and hard composite strata at different heights.

[0020] 4. The first reinforcing rib increases the supporting strength of the top supporting mechanism.

[0021] 5. The guide rod is always connected to the column by sliding up and down, and the guide auxiliary hydraulic push rod adjusts the height of the top support mechanism.

[0022] 6. The positioning plate facilitates the positioning of the hydraulic push rod under the crossbar.

[0023] 7. The second reinforcing rib makes the structure of the height adjustment mechanism more stable, and the third reinforcing rib assists in guiding while also strengthening the connection strength between the top support mechanism and the height adjustment mechanism.

[0024] 8. The passage can avoid obstacles on the road and facilitate passage.

[0025] 9. Turn the turntable to make the foot pad close to the ground, so that the support structure is stably supported on the ground, so as to improve the stability of the support mechanism during the support period; the universal wheel realizes the position movement of the support structure.

[0026] 10. The support structure is simple in structure and easy to operate; the support structure is suitable for the construction of tunnels in water-rich soft and hard composite strata at multiple sections and multiple heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of the support structure of the utility model.

[0028] Figure 2 It is a partial cross-sectional view of the supporting structure of the utility model.

[0029] Figure 3 It is a rear view of the supporting structure of the utility model.

[0030] Figure 4 It is a structural schematic diagram of the supporting structure of the utility model in another direction.

[0031] Figure 5 It is a cross-sectional view of the liquid collecting box of the present utility model.

[0032] Figure 6 It is a structural schematic diagram of the top support mechanism lifting to a certain height.

[0033] Among them, 1 is the base, 2 is the universal wheel, 3 is the fixed plate, 4 is the screw, 5 is the foot pad, 6 is the turntable, 7 is the column, 8 is the second reinforcement rib, 9 is the arc-shaped support rod, 10 is the support block, 11 is the cross bar, 12 is the first reinforcement rib, 13 is the third reinforcement rib, 14 is the hydraulic push rod, 15 is the positioning plate, 16 is the arc-shaped support plate, 17 is the liquid collecting box, 18 is the end cover, 19 is the water pump, 20 is the drain pipe, 21 is the bottom plate, 22 is the filter screen, 23 is the guide groove, and 24 is the guide rod. DETAILED DESCRIPTION

[0034] The present invention will be further described in detail below in conjunction with specific implementation methods.

[0035] A support structure for tunnel construction in water-rich soft and hard composite strata, comprising a base, a height adjustment mechanism, and a top support mechanism; the top support mechanism is installed on the base through the height adjustment mechanism, the top support mechanism comprises an arc-shaped support plate, a liquid collecting box and a drainage component, the shape of the arc-shaped support plate corresponds to the shape of the tunnel top, the liquid collecting box is arranged on the inner side of the arc-shaped support plate, the arc-shaped support plate is provided with seepage holes, the seepage holes are connected to the liquid collecting box, and the drainage component is installed on the liquid collecting box.

[0036] The liquid collecting box includes front and rear side plates, a bottom plate and an end cover. The two side plates, a bottom plate and an arc-shaped support plate form a space for accommodating groundwater, and a water outlet is arranged on the bottom plate; the drainage assembly includes a water pump, a drainage pipe and a filter; the water pump is connected below the water outlet, the drainage pipe is connected below the water pump, and a filter surrounding the water outlet is arranged on the top surface of the bottom plate; the top surface of the bottom plate is high on both sides and low in the middle, an opening is arranged in the center of the bottom plate, the end cover is connected below the opening, and the end cover is threadedly connected to the opening.

[0037] The cross section of the arc-shaped support plate is an arc shape with the opening facing downward; multiple water seepage holes are evenly distributed on the arc-shaped surface of the arc-shaped support plate. The top support mechanism also includes two arc-shaped support rods, which are arranged front and back; the arc top surface of the arc-shaped support rod is fitted and fixed with the arc bottom surface of the arc-shaped support plate, the front end of the arc-shaped support rod located in the front is flush with the front end of the arc-shaped support plate, and the rear end of the arc-shaped support rod located in the rear is flush with the rear end of the arc-shaped support plate; the arc-shaped support plate and the arc-shaped support rod are both symmetrical; the left and right lower ends of the arc-shaped support rod are respectively fixed with a support block, and a cross bar is fixed between the two support blocks under the same arc-shaped support rod.

[0038] A first reinforcing rib is provided between the arc bottom surface of the front arc-shaped support rod and the upper end surface of the corresponding crossbar below, and a first reinforcing rib is provided between the arc bottom surface of the rear arc-shaped support rod and the upper end surface of the corresponding crossbar below. In this embodiment, preferably, each arc-shaped support rod is evenly distributed with three first reinforcing ribs circumferentially on the corresponding crossbar below.

[0039] The height adjustment mechanism includes four columns, four guide rods, and four hydraulic push rods; a guide hole for inserting a guide rod is provided on the upper end surface of a column to realize the upward and downward guiding movement of the guide rod in the column; the two guide rods located in the front row are respectively fixedly connected to the two support blocks under the front arc-shaped support rod, and the two guide rods located in the rear row are respectively fixedly connected to the two support blocks under the rear arc-shaped support rod; the hydraulic push rod is installed between the base and the cross bar, and two hydraulic push rods are symmetrically arranged under each cross bar.

[0040] The height adjustment mechanism also includes four positioning plates, and a positioning plate is fixedly connected between a hydraulic push rod and the cross bar.

[0041] The columns are rectangular parallelepiped, and guide grooves are arranged on the upper parts of the side walls facing each other of the two columns in the front row, and guide grooves are arranged on the upper parts of the side walls facing each other of the two columns in the back row. A second reinforcing rib is arranged between the lower part of the side wall of each column with the guide groove and the base; a third reinforcing rib is arranged between the cross bar and the guide bar, and the third reinforcing rib passes through the guide groove.

[0042] The arc-shaped support rod is integrally arranged with two corresponding guide rods below; and the support block is provided with fixing holes for the guide rods to pass through.

[0043] The base is composed of two flat plates, which are symmetrically arranged on the left and right sides, and a channel is formed between the two flat plates; the height adjustment mechanism is symmetrically installed on the two flat plates. The front and rear columns on the left are respectively installed on the top surface of the left flat plate; the front and rear columns on the right are respectively installed on the top surface of the right flat plate.

[0044] The supporting structure also includes four supporting mechanisms; the supporting mechanisms include a fixed plate, a screw, a foot pad and a turntable; the screw passes through the threaded through hole of the fixed plate, the upper end of the screw is fixedly connected to the turntable, and the lower end of the screw is fixedly connected to the foot pad; the fixed plates of the four supporting mechanisms are symmetrically installed on the side walls of the base in front, back, left and right directions; a universal wheel is arranged under the base.

[0045] There are four universal wheels, with two universal wheels arranged at the front and rear under each flat plate.

[0046] An operation method of a support structure for tunnel construction in a water-rich soft-hard composite stratum, the steps are as follows:

[0047] Step 1: Turn the turntable to make the foot pad leave the ground, move the support structure to the tunnel destination to be constructed under the action of the universal wheel, and turn the turntable to make the foot pad close to the ground until the universal wheel leaves the ground;

[0048] Step 2: Operate the hydraulic push rod to make the arc-shaped support plate reach the top surface of the tunnel for support;

[0049] Step 3: The liquid collecting tank collects groundwater through the seepage holes of the arc-shaped support plate, and the water pump extracts the groundwater in the liquid collecting tank and discharges it through the drainage pipe;

[0050] Step 4: Open the end cover regularly to clean the sludge in the collection tank.

[0051] Step 5: When the support work at the construction location is completed and it is necessary to move to another destination, repeat steps 1-4 to achieve continuous operation of the support structure.

[0052] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited by the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principle of the present invention should be equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. A support structure for tunnel construction in water-rich soft and hard composite strata, characterized by: It includes a base, a height adjustment mechanism, and a top support mechanism; The top support mechanism is installed on the base through a height adjustment mechanism. The top support mechanism includes an arc-shaped support plate, a liquid collecting box and a drainage assembly. The shape of the arc-shaped support plate corresponds to the shape of the tunnel top. The liquid collecting box is arranged on the inner side of the arc-shaped support plate. The arc-shaped support plate is provided with seepage holes, which are connected to the liquid collecting box. The drainage assembly is installed on the liquid collecting box.

2. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 1, characterized in that: The liquid collecting box includes a bottom plate and an end cover, and a water outlet is arranged on the bottom plate; the drainage assembly includes a water pump, a drainage pipe, and a filter; the water pump is connected below the water outlet, the drainage pipe is connected below the water pump, and a filter surrounding the water outlet is arranged on the top surface of the bottom plate; the top surface of the bottom plate is high on both sides and low in the middle, an opening is arranged in the center of the bottom plate, and the end cover is connected below the opening.

3. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 1, characterized in that: The cross-section of the arc-shaped support plate is an arc shape with the opening facing downward; the top support mechanism also includes two arc-shaped support rods, which are arranged front to back; the arc top surface of the arc support rod is fitted and fixed with the arc bottom surface of the arc support plate, the front end of the arc support rod located in the front is flush with the front end of the arc support plate, and the rear end of the arc support rod located in the rear is flush with the rear end of the arc support plate; the arc support plate and the arc support rod are both symmetrical on the left and right; the left and right lower ends of the arc support rod are respectively fixed to a support block, and a cross bar is fixed between the two support blocks under the same arc support rod.

4. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 3, characterized in that: A first reinforcing rib is arranged between the arc bottom surface of the front arc-shaped support rod and the upper end surface of the corresponding lower crossbar, and a first reinforcing rib is arranged between the arc bottom surface of the rear arc-shaped support rod and the upper end surface of the corresponding lower crossbar.

5. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 3, characterized in that: The height adjustment mechanism includes four columns, four guide rods, and four hydraulic push rods; a guide hole for inserting a guide rod is provided on the upper end surface of a column to realize the upward and downward guiding movement of the guide rod in the column; the two guide rods located in the front row are respectively fixedly connected to the two support blocks under the front arc-shaped support rod, and the two guide rods located in the rear row are respectively fixedly connected to the two support blocks under the rear arc-shaped support rod; the hydraulic push rod is installed between the base and the cross bar, and two hydraulic push rods are symmetrically arranged under each cross bar.

6. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 5, characterized in that: The height adjustment mechanism also includes four positioning plates, and a positioning plate is fixedly connected between a hydraulic push rod and the cross bar.

7. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 5, characterized in that: The columns are rectangular parallelepiped, and guide grooves are arranged on the upper parts of the side walls facing each other of the two columns in the front row, and guide grooves are arranged on the upper parts of the side walls facing each other of the two columns in the back row. A second reinforcing rib is arranged between the lower part of the side wall of each column with the guide groove and the base; a third reinforcing rib is arranged between the cross bar and the guide bar, and the third reinforcing rib passes through the guide groove.

8. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 5, characterized in that: The arc-shaped support rod is integrally arranged with two corresponding guide rods below; and the support block is provided with fixing holes for the guide rods to pass through.

9. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 5, characterized in that: The base is composed of two flat plates, which are symmetrically arranged on the left and right sides, and a space is left between the two flat plates to form a channel; and the height adjustment mechanism is symmetrically installed on the two flat plates on the left and right sides.

10. A supporting structure for tunnel construction in water-rich soft-hard composite strata according to claim 1, characterized in that: It also includes four supporting mechanisms; the supporting mechanisms include a fixing plate, a screw, a foot pad and a turntable; the screw passes through the threaded through hole of the fixing plate, the upper end of the screw is fixedly connected to the turntable, and the lower end of the screw is fixedly connected to the foot pad; The fixing plates of the four supporting mechanisms are symmetrically mounted on the side walls of the base in front, back, left and right directions; and universal wheels are arranged under the base.

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