A soil slope reinforcement construction device based on microbial solidification

Abstract

The present invention discloses a soil slope reinforcement construction device based on microbial solidification, which belongs to the technical field of slope reinforcement and can solve the problems of long construction period, great environmental impact and high cost of existing soil slope reinforcement methods. The device includes: a jet drilling module, which includes a shotcrete pipe, a drilling pipe sleeved on the outside of the shotcrete pipe, a drill bit connected to the bottom of the drilling pipe, and a driving member for driving the drill bit to rotate; a slurry outlet hole is provided on the pipe wall of the shotcrete pipe, and a hollow window is provided on the pipe wall of the drilling pipe; a limiting structure is provided between the shotcrete pipe and the drilling pipe, and the limiting structure is used to limit the drilling pipe and the shotcrete pipe to a shotcrete position or a drilling position; wherein the shotcrete position is when the hollow window of the drilling pipe coincides with the slurry outlet hole on the shotcrete pipe, and the drilling position is when the pipe wall of the drilling pipe closes the slurry outlet hole on the shotcrete pipe; a liquid supply module is connected to the shotcrete pipe and is used to provide a microbial solution to the shotcrete pipe, and the microbial solution is used to solidify the soil. The present invention is used for the reinforcement of soil slopes.

Description

Technical Field

[0001] The invention relates to a soil slope reinforcement construction device based on microbial solidification, belonging to the technical field of slope reinforcement. Background Art

[0002] With the rapid development of infrastructure construction in my country, the issue of slope stability has attracted widespread attention. Traditional soil slope reinforcement methods such as sprayed anchors, concrete frame beams, and soil nail walls have certain limitations and shortcomings in practical applications, such as long construction period, great impact on the environment, and high cost. Therefore, it is of great theoretical and practical significance to study a new, environmentally friendly, and efficient slope reinforcement technology. Summary of the invention

[0003] The present invention provides a soil slope reinforcement construction device based on microbial solidification, which can solve the problems of long construction period, great impact on the environment and high cost in the existing soil slope reinforcement method.

[0004] The present invention provides a soil slope reinforcement construction device based on microbial solidification, the device comprising:

[0005] The jet drilling module comprises a shotcrete pipe, a drilling pipe sleeved outside the shotcrete pipe, a drill bit connected to the bottom end of the drilling pipe, and a driving member for driving the drill bit to rotate; a slurry outlet hole is arranged on the wall of the shotcrete pipe, and a hollow window is arranged on the wall of the drilling pipe;

[0006] A limiting structure is provided between the shotcrete pipe and the drilling pipe, and the limiting structure is used to limit the drilling pipe and the shotcrete pipe to a shotcrete position or a drilling position; wherein the shotcrete position is when the empty window of the drilling pipe coincides with the slurry outlet hole on the shotcrete pipe, and the drilling position is when the wall of the drilling pipe closes the slurry outlet hole on the shotcrete pipe;

[0007] The liquid supply module is connected to the spraying pipe and is used to provide a microbial solution to the spraying pipe, and the microbial solution is used to solidify the soil.

[0008] Optionally, the limiting structure includes:

[0009] A first limiting unit is provided between the shotcrete pipe and the drilling pipe, and is used to limit the drilling pipe and the shotcrete pipe to a shotcrete position;

[0010] The second limiting unit is arranged between the spraying pipe and the drilling pipe, and is used to limit the drilling pipe and the spraying pipe at the drilling position.

[0011] Optionally, the first limiting unit and the second limiting unit both include:

[0012] The containing groove is arranged on the wall of the shotcrete pipe on one side close to the drilling pipe;

[0013] A limiting groove is arranged on the pipe wall of the drilling pipe on a side close to the spraying pipe;

[0014] The elastic component is arranged in the accommodating groove, and is used for being embedded in the limiting groove or being disengaged from the limiting groove when the drilling pipe and the spraying pipe rotate relative to each other.

[0015] Optionally, the elastic member includes:

[0016] A buckle pressing tongue, a fixed end of which is fixed in the receiving groove;

[0017] An elastic member is arranged in the accommodating groove and is used to support the free end of the buckle pressing tongue; the free end of the buckle pressing tongue is used to be embedded in the limiting groove or disengaged from the limiting groove when the drilling pipe and the spraying pipe rotate relative to each other.

[0018] Optionally, the liquid supply module includes:

[0019] A solution storage tank, used for containing a microbial solution;

[0020] A driving pump has one end connected to the outlet of the solution storage tank and the other end connected to the spraying pipe through a pipeline, and is used to transport the microbial solution in the solution storage tank to the spraying pipe.

[0021] Optionally, the spraying pipe is divided into a plurality of pipe sections along its length direction, and each pipe section is provided with at least one row of slurry holes.

[0022] Optionally, the area of ​​the empty window on the drilling pipe is larger than the area of ​​the slurry outlet hole on the spraying pipe.

[0023] Optionally, the slurry outlet hole is a circular hole.

[0024] Optionally, the elastic member is a compression spring.

[0025] The beneficial effects that the present invention can produce include:

[0026] The soil slope reinforcement construction device based on microbial solidification provided by the present invention is designed with a double-layer hollow drill rod with an inner layer being a shotcrete pipe and an outer layer being a drilling pipe. The inner shotcrete pipe and the outer drilling pipe can be rotated and can also be fixed by a limiting structure. In this way, the drill rod can be switched between a shotcrete position and a drilling position, thereby conveniently realizing the dual functions of drilling and spraying a microbial solution into the soil, saving the construction period of soil slope reinforcement and reducing construction costs.

[0027] The present invention provides a new, environmentally friendly and efficient slope reinforcement construction device. Through the microbial soil solidification method, the microorganisms in the soil can be activated to produce chemical reactions to form solidified soil with certain strength and stability. Compared with traditional reinforcement methods, the microbial soil solidification method has the advantages of simple construction, small environmental impact and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic cross-sectional view of a soil slope reinforcement construction device provided by an embodiment of the present invention, in which a drill rod is in a drilling position;

[0029] Figure 2 A schematic diagram of the structure of a drill rod in a soil slope reinforcement construction device provided by an embodiment of the present invention in a drilling position;

[0030] Figure 3 A schematic cross-sectional view of a soil slope reinforcement construction device provided by an embodiment of the present invention, in which a drill rod is in a grouting position;

[0031] Figure 4 A schematic diagram of the structure of a drill rod in a soil slope reinforcement construction device provided by an embodiment of the present invention in a grouting position;

[0032] Figure 5 A schematic cross-sectional structure diagram of a second limiting unit when the drill rod is in a drilling position provided by an embodiment of the present invention;

[0033] Figure 6 A schematic cross-sectional structure diagram of a first limiting unit when the drill rod is in a drilling position provided by an embodiment of the present invention;

[0034] Figure 7 A schematic cross-sectional structure diagram of a second limiting unit when the drill rod is in a grouting position provided by an embodiment of the present invention;

[0035] Figure 8 A schematic cross-sectional structure diagram of a first limiting unit when the drill rod is in a shotcrete position provided by an embodiment of the present invention;

[0036] Fig. 9 A schematic diagram of soil slope reinforcement construction using a handheld hollow drill provided in an embodiment of the present invention.

[0037] Reference numerals:

[0038] 10. Hand-held hollow drill; 11. Drilling pipe; 12. Shotcrete pipe; 13. Empty window; 14. Slurry outlet hole; 15. Drill bit; 16. Second limiting unit; 161. Second accommodating groove; 162. Second limiting groove; 163. Second buckle pressing tongue; 164. Second compression spring; 17. First limiting unit; 171. First accommodating groove; 172. First limiting groove; 173. First buckle pressing tongue; 174. First compression spring; 20. Solution storage tank; 21. Drive pump; 22. Pipeline; 30. Frame beam; 40. Soil slope. DETAILED DESCRIPTION

[0039] The present invention is described in detail below in conjunction with embodiments, but the present invention is not limited to these embodiments.

[0040] The embodiment of the present invention provides a soil slope reinforcement construction device based on microbial solidification, such as Figures 1 to 8 As shown, the device comprises:

[0041] The jet drilling module comprises a shotcrete pipe 12, a drilling pipe 11 sleeved on the outside of the shotcrete pipe 12, a drill bit 15 connected to the bottom end of the drilling pipe 11, and a driving member for driving the drill bit 15 to rotate; a slurry outlet hole 14 is arranged on the pipe wall of the shotcrete pipe 12, and a hollow window 13 is arranged on the pipe wall of the drilling pipe 11; a limiting structure is arranged between the shotcrete pipe 12 and the drilling pipe 11, and the limiting structure is used to limit the drilling pipe 11 and the shotcrete pipe 12 to a shotcrete position or a drilling position; wherein, the shotcrete position is when the hollow window 13 of the drilling pipe 11 coincides with the slurry outlet hole 14 on the shotcrete pipe 12, and the drilling position is when the pipe wall of the drilling pipe 11 closes the slurry outlet hole 14 on the shotcrete pipe 12.

[0042] The liquid supply module is connected to the spraying pipe 12 and is used to provide a microbial solution to the spraying pipe 12, and the microbial solution is used to solidify the soil.

[0043] In the embodiment of the present invention, the spraying pipe 12 can be divided into a plurality of pipe sections along its length direction, and each pipe section is provided with at least one row of slurry holes 14. This arrangement can enhance the pipe wall strength of the spraying pipe 12 while ensuring the number of slurry holes 14.

[0044] In practical applications, the area of ​​the empty window 13 on the drilling tube 11 should be larger than the area of ​​the slurry outlet hole 14 on the spraying tube 12, so as to ensure that the empty window 13 on the drilling tube 11 will not block the slurry outlet hole 14 on the spraying tube 12 when in the spraying position.

[0045] The embodiment of the present invention does not limit the shape of the slurry outlet hole 14. For example, the slurry outlet hole 14 can be a round hole or a square hole.

[0046] In the embodiment of the present invention, the jet drilling module is a handheld hollow drill 10. The shotcrete pipe 12 and the drilling pipe 11 constitute the drill rod of the handheld hollow drill 10. A single drill rod can be customized to be 50 cm long, the drill bit 15 can be made separately, and the drill rod can be lengthened by threaded connection. Generally, the thickness of the lattice beam 30 for slope reinforcement is about 30 cm to 50 cm, so a single drill rod of 50 cm in length can basically meet the thickness requirement of the lattice beam 30.

[0047] The above-mentioned limiting structure includes: a first limiting unit 17, which is arranged between the shotcrete pipe 12 and the drilling pipe 11, and is used to limit the drilling pipe 11 and the shotcrete pipe 12 to the shotcrete position; a second limiting unit 16, which is arranged between the shotcrete pipe 12 and the drilling pipe 11, and is used to limit the drilling pipe 11 and the shotcrete pipe 12 to the drilling position.

[0048] Specifically, the first limiting unit 17 and the second limiting unit 16 both include: a receiving groove, which is arranged on the tube wall of the shotcrete tube 12 on the side close to the drilling tube 11; a limiting groove, which is arranged on the tube wall of the drilling tube 11 on the side close to the shotcrete tube 12; and an elastic member, which is arranged in the receiving groove and is used to be embedded in the limiting groove or detached from the limiting groove when the drilling tube 11 and the shotcrete tube 12 rotate relative to each other.

[0049] The elastic member includes: a buckle tongue, whose fixed end is fixed in the receiving groove; an elastic member, which is arranged in the receiving groove and is used to support the free end of the buckle tongue; the free end of the buckle tongue is used to be embedded in the limiting groove or disengaged from the limiting groove when the drilling pipe 11 and the spraying pipe 12 rotate relative to each other. The elastic member can be a compression spring.

[0050] refer to Figures 1 to 8 As shown, the accommodating groove in the first limiting unit 17 is recorded as the first accommodating groove 171, the limiting groove in the first limiting unit 17 is recorded as the first limiting groove 172, the buckle pressing tongue in the first limiting unit 17 is recorded as the first buckle pressing tongue 173, and the compression spring in the first limiting unit 17 is recorded as the first compression spring 174; the accommodating groove in the second limiting unit 16 is recorded as the second accommodating groove 161, the limiting groove in the second limiting unit 16 is recorded as the second limiting groove 162, the buckle pressing tongue in the second limiting unit 16 is recorded as the second buckle pressing tongue 163, and the compression spring in the second limiting unit 16 is recorded as the second compression spring 164.

[0051] Specifically, when spraying is required, the spraying pipe 12 is rotated clockwise or the drilling pipe 11 is rotated counterclockwise, and the free end of the second buckle pressing tongue 163 in the second limiting unit 16 slides out from the second limiting groove 162, such as Figure 7 The free end of the first locking tongue 173 in the first limiting unit 17 slides into the corresponding first limiting groove 172, so that the drilling tube 11 and the spraying tube 12 are limited to the spraying position, such as Figure 8As shown, the spraying position is as follows Figure 3 and Figure 4 shown.

[0052] When drilling is required, when the spraying pipe 12 is rotated counterclockwise or the drilling pipe 11 is rotated clockwise, the free end of the first buckle pressing tongue 173 of the first limiting unit 17 slides out from the first limiting groove 172. Figure 6 As shown, the free end of the second buckle pressing tongue 163 of the second limiting unit 16 slides into the corresponding second limiting groove 162, so that the drilling pipe 11 and the spraying pipe 12 are limited to the drilling position, as shown in FIG. Figure 5 As shown, the drilling position is as follows Figure 1 and Figure 2 shown.

[0053] The liquid supply module includes: a solution storage tank 20 for containing a microbial solution; a drive pump 21, one end of which is connected to the outlet of the solution storage tank 20, and the other end is connected to the spraying pipe 12 through a pipeline 22, for transporting the microbial solution in the solution storage tank 20 to the spraying pipe 12.

[0054] In actual application, the depth of the grouting hole is controlled by the drilling switch. When the drilling switch is turned on, the drill rod is rotated to drill. At this time, the slurry hole 14 and the empty window 13 are not in the same position, that is, the slurry hole 14 is closed; when drilling to the specified depth, the drilling switch is turned off, and the grouting switch is turned on. At the same time, the spraying pipe 12 is rotated clockwise or the drilling pipe 11 is rotated counterclockwise so that the slurry hole 14 and the empty window 13 are in the same position, and then the driving pump 21 is turned on to start working, the microbial solution is extracted from the mixing tank, and sent to the hollow drill bit 15 through the pipeline 22. Under the action of pressure, the microbial slurry is injected into the soil, and the injection amount of the microbial slurry is controlled by the grouting switch.

[0055] The handheld hollow drill 10 of the present invention is a drill that can rotate clockwise and counterclockwise. The inner layer spraying pipe 12 and the outer layer drilling pipe 11 can be rotated or fixed by the limit groove. The motor drives the spraying pipe 12 as the active pipe and the drilling pipe 11 as the driven pipe. When drilling is required, the inner layer spraying pipe 12 and the outer layer drilling pipe 11 rotate to Figure 1 and Figure 2 The second limit unit 16 is located at the drilling position and locked. Figure 5 Position, the first limit unit 17 is located at Figure 6 position, at which time the slurry outlet hole 14 is hidden in the drilling pipe 11 to prevent the soil from entering the shotcrete pipe 12 during drilling; when shotcrete is required, the inner shotcrete pipe 12 and the outer drilling pipe 11 are rotated to Figure 3 and Figure 4 The second limit unit 16 is located at the spraying position and locked. Figure 7 Position, the first limit unit 17 is located at Figure 8position, at this time, the slurry outlet hole 14 is exposed outside the drilling pipe 11, and the microbial solution can be smoothly sprayed into the soil.

[0056] During the spraying, the inner spraying pipe 12 and the outer drilling pipe 11 can be rotated simultaneously by the handheld hollow drill 10 to spray the microbial solution 360° along the borehole; or fixed spraying can be performed without rotation. This is not limited in the embodiment of the present invention.

[0057] Another embodiment of the present invention provides a construction method for reinforcing a soil slope 40 using a handheld hollow drill 10, which specifically includes the following steps:

[0058] (1) Surveying and laying out: Determine the location and area of ​​soil reinforcement. The entire slope soil can be reinforced, or the soil inside the frame beam 30 can be reinforced.

[0059] (2) Preparation of microbial solution: Take 10 to 15 parts of one or more combinations of Bacillus, Proteus, and Urea Micrococcus, and mix and prepare 150 to 200 parts of one or more combinations of culture medium urea, calcium acetate, sodium acetate, ammonium chloride, nickel chloride solution, distilled water, etc. Mix the microbial strains in a liquid volume ratio of (1 to 5): (15 to 20), stir and culture at 20±0.5℃ for 30 minutes to form a microbial solution.

[0060] (3) Area division: Divide the area within the range of the frame beam 30 to be formed, and implement it step by step according to the area. The significance of dividing the area is that the drilling and spraying can be carried out in an orderly manner to avoid missing drilling and spraying.

[0061] (4) Debugging device: According to Fig. 9 As shown, a solution storage tank 20, a driving pump 21, a pipeline 22, and a handheld hollow drill 10 for assembling the microbial solution are assembled, the drilling switch is turned on, and the drill bit 15 is debugged to see if it works normally. The drilling switch is turned off, the grouting switch is turned on, and it is observed whether the driving pump 21 starts to work normally and whether the microbial solution can be normally extracted from the solution storage tank 20.

[0062] (5) Drilling and grouting: Drill holes in each area with a handheld hollow drill 10 first, rotate the drill rod to the drilling position, and drill holes with a hole spacing of 10~15cm. The hole depth is determined according to the required thickness of the frame beam 30. After drilling, rotate the drill rod to the grouting position and perform rotary or fixed grouting. The grouting amount is controlled by the grouting time. After grouting, the hole can be sealed with soil. Gradually complete the grouting of each area.

[0063] (6) Sealing: After the grouting is completed, take soil on site to seal the hole to prevent the infiltration of temporary external environmental water and affect the curing effect.

[0064] In the shotcrete area, due to the action of microbial solution and soil, a soil beam with a certain strength is formed, which provides support for the slope. Moreover, this beam has a low elastic modulus and can adapt to the deformation of the slope, thus having a dual function.

[0065] The present invention designs a double-layer hollow drill rod with an inner layer of a shotcrete pipe 12 and an outer layer of a drilling pipe 11. The inner shotcrete pipe 12 and the outer drilling pipe 11 can be rotated and fixed by a limiting structure. In this way, the drill rod can be switched between a shotcrete position and a drilling position, thereby conveniently realizing the dual functions of drilling and spraying a microbial solution into the soil, saving the construction period of reinforcing the soil slope 40 and reducing the construction cost.

[0066] The present invention provides a new, environmentally friendly and efficient slope reinforcement construction device. Through the microbial soil solidification method, the microorganisms in the soil can be activated to produce chemical reactions to form solidified soil with certain strength and stability. Compared with traditional reinforcement methods, the microbial soil solidification method has the advantages of simple construction, small environmental impact and low cost.

[0067] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A soil slope reinforcement construction device based on microbial solidification, characterized in that: The device comprises: The jet drilling module comprises a shotcrete pipe, a drilling pipe sleeved outside the shotcrete pipe, a drill bit connected to the bottom end of the drilling pipe, and a driving member for driving the drill bit to rotate; a slurry outlet hole is arranged on the wall of the shotcrete pipe, and a hollow window is arranged on the wall of the drilling pipe; A limiting structure is provided between the shotcrete pipe and the drilling pipe, the limiting structure comprising a first limiting unit and a second limiting unit provided between the shotcrete pipe and the drilling pipe, the first limiting unit being used to limit the drilling pipe and the shotcrete pipe at a shotcrete position, the second limiting unit being used to limit the drilling pipe and the shotcrete pipe at a drilling position; wherein the shotcrete position is when the empty window of the drilling pipe coincides with the slurry outlet hole on the shotcrete pipe, and the drilling position is when the pipe wall of the drilling pipe closes the slurry outlet hole on the shotcrete pipe; The first limiting unit and the second limiting unit both include: a containing groove, which is arranged on the wall of the shotcrete pipe on the side close to the drilling pipe; a limiting groove, which is arranged on the wall of the drilling pipe on the side close to the shotcrete pipe; a buckle pressing tongue, whose fixed end is fixed in the containing groove; an elastic member, which is arranged in the containing groove and is used to support the free end of the buckle pressing tongue; the free end of the buckle pressing tongue is used to be embedded in the limiting groove or detached from the limiting groove when the drilling pipe and the shotcrete pipe rotate relative to each other; The liquid supply module is connected to the spraying pipe and is used to provide a microbial solution to the spraying pipe, and the microbial solution is used to solidify the soil.

2. The device according to claim 1, characterized in that The liquid supply module comprises: A solution storage tank, used for containing a microbial solution; A driving pump has one end connected to the outlet of the solution storage tank and the other end connected to the spraying pipe through a pipeline, and is used to transport the microbial solution in the solution storage tank to the spraying pipe.

3. The device according to claim 1, characterized in that The spraying pipe is divided into a plurality of pipe sections along its length direction, and each pipe section is provided with at least one row of slurry holes.

4. The device according to claim 1, characterized in that The area of ​​the empty window on the drilling pipe is larger than the area of ​​the slurry outlet hole on the spraying pipe.

5. The device according to claim 1, characterized in that The slurry outlet hole is a circular hole.

6. The device according to claim 1, characterized in that The elastic member is a compression spring.

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