Reinforcing device for natural drainage ditch in mountain area

Abstract

The utility model provides a reinforcing device for a natural drainage ditch in a mountain area, which comprises a grouting barrel, a fixing support and a cart, the fixing support is arranged on the cart, and the grouting barrel is erected on the fixing support; the bottom of the grouting barrel is provided with a grout outlet, the grout outlet is connected with a liquid inlet of the liquid distributor, the liquid distributor is provided with a plurality of liquid outlets, the flat plate part of the cart is provided with a grid spraying groove, array type nozzles are arranged in the grid spraying groove, and the liquid outlets are connected with the nozzles through pipelines; and the number of the nozzles is not less than that of the liquid outlets. Through the device, the drainage ditch wall can be effectively stabilized, and the drainage efficiency is improved; under the action of enzyme, generation of calcium carbonate is promoted, a firm deposition layer is formed, the structural stability of the channel is enhanced, and soil loss caused by water flow scouring is prevented; in addition, the device uses a soybean urease solution as a cementing liquid raw material, is environment-friendly, does not generate pollution, and is beneficial to protecting the ecological environment of the mountain land.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation reinforcement in civil engineering, and particularly relates to a reinforcement device for a natural drainage ditch in a mountainous area. Background Technique

[0002] Natural drainage ditches often form in mountainous terrains. These valleys may be formed due to geological processes such as long-term water erosion, landslides, earthquakes, etc. The undulation and steepness of the mountainous terrain increase the speed and erosive force of the water flow, promoting the formation of drainage ditches. Formed by natural forces, the terrain may have some defects. Due to differences in its geographical environment, formation process, and management situation, natural drainage ditches may have some potential safety hazards, which may lead to the collapse of the ditch walls, deformation of the ditch bottom, or displacement of the ditch channel, increasing the difficulty of maintenance and management, and may pose certain risks to surrounding residents, road traffic, and adjacent buildings.

[0003] Urease-induced calcium carbonate precipitation is a new type of soil reinforcement technology. Its principle is that urease produced by the metabolic activities of bacteria (i.e., microorganisms) catalyzes the hydrolysis of urea to generate ammonium ions and carbonate ions. In an alkaline environment, carbonate ions combine with exogenous calcium ions to form calcium carbonate crystals with cementing effects, achieving the purpose of solidifying rock and soil bodies. Urease is extracted from soybeans and sprayed on the soil surface after being mixed with an equal amount of calcium chloride and urea solution. A thin hard shell will form on the soil surface, and the surface hard shell formed by calcium carbonate cementation can reach a strength of MPa level. This surface hard shell is environmentally friendly and will not cause environmental pollution problems. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a reinforcement device for a natural drainage ditch in a mountainous area, expecting to reinforce the drainage ditch based on enzyme-induced calcium carbonate precipitation without polluting the soil environment.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A reinforcement device for a natural drainage ditch in a mountainous area, characterized in that: it includes a grouting barrel, a fixed bracket, and a trolley. The fixed bracket is provided on the trolley, and the grouting barrel is erected on the fixed bracket; the grouting barrel is filled with a urease mixed solution, and a slurry outlet is provided at the bottom of the grouting barrel. The slurry outlet is connected to the liquid inlet of a liquid distributor. The liquid distributor is provided with a plurality of liquid outlets. A grid spraying groove is provided on the flat part of the trolley, and an array of nozzles is provided in the grid spraying groove. The liquid outlets are connected to the nozzles through pipelines; the number of nozzles is not less than the number of liquid outlets.

[0007] While adopting the above technical solutions, the utility model can also adopt or combine the following technical solutions:

[0008] As a preferred technical solution of the present utility model: a top cover is provided on the top of the grouting barrel.

[0009] As a preferred technical solution of the present utility model: holes are provided on the top cover.

[0010] As a preferred technical solution of the present utility model: a rubber plug is provided on the hole. During grouting, the slurry can communicate with the atmosphere, avoiding the formation of negative pressure in the grouting barrel and preventing grouting.

[0011] As a preferred technical solution of the present utility model: the grid spraying tank is a grid-shaped hollow structure.

[0012] As a preferred technical solution of the present utility model: a handrail is provided on the trolley.

[0013] As a preferred technical solution of the present utility model: four rollers are provided at the bottom of the trolley.

[0014] The present utility model provides a reinforcement device for natural drainage ditches in mountainous areas, having the following beneficial effects: Through this device, the drainage ditch can effectively stabilize the ditch wall, improve the drainage efficiency, and reduce the risks of soil erosion and ditch collapse; Through the action of enzymes, the generation of calcium carbonate is promoted, forming a solid deposition layer, enhancing the structural stability of the ditch, and preventing soil loss caused by water flow scouring; In addition, this device uses a soybean urease solution as the raw material for the cementing liquid, which is environmentally friendly, does not cause pollution, is conducive to protecting the mountain ecological environment, and improves the sustainable land use. Brief Description of the Drawings

[0015] Figure 1 is the overall structural schematic diagram of the reinforcement device for natural drainage ditches in mountainous areas provided by the present utility model;

[0016] Figure 2 is the structural schematic diagram of the grouting barrel;

[0017] Figure 3 is the structural schematic diagram of the trolley and the bracket;

[0018] Figure 4 is the cross-sectional view of the liquid distributor;

[0019] Figure 5 is the schematic diagram of the pipeline;

[0020] Figure 6 is the structural schematic diagram of the nozzle;

[0021] In the figure: 1 - grouting bucket; 2 - bracket; 3 - trolley; 4 - liquid distributor; 5 - pipeline; 6 - nozzle; 11 - top cover; 12 - slurry outlet; 13 - hole; 31 - grid water spraying trough; 32 - handrail; 33 - roller; 41 - liquid inlet; 42 - liquid outlet. Detailed implementation manners

[0022] The present utility model will be further described in detail with reference to the accompanying drawings and specific embodiments.

[0023] As Figures 1-6 shown, a reinforcement device for a natural drainage ditch in a mountainous area includes a grouting bucket 1, a fixed bracket 2, and a trolley 3. A fixed bracket 2 is provided on the trolley 3, and the grouting bucket 1 is erected on the fixed bracket 2, and the two are fixed by bolts; the grouting bucket 1 contains a urease mixed solution, and a slurry outlet 12 is provided at the bottom of the grouting bucket 1. The slurry outlet 12 is connected to the liquid inlet 41 of the liquid distributor 4. The liquid distributor 4 is provided with a plurality of liquid outlets 42. A grid spraying trough 31 is provided on the flat part of the trolley 3. An array of nozzles 6 is provided in the grid spraying trough 31. The liquid outlet 42 is connected to the nozzle 6 through a pipeline 5; the number of nozzles 6 is not less than the number of liquid outlets 42. For example: in some embodiments, the number of nozzles 6 can be set to be greater than the number of liquid outlets 42, so that some nozzles 6 on the flat plate of the trolley 3 are not connected to the liquid outlets 42, thereby realizing spraying more urease mixed solution on one side of the natural drainage ditch in the mountainous area and less spraying on other positions.

[0024] A top cover 11 is provided on the top of the grouting bucket 1, and the top cover 11 is provided with an arc-shaped handle to facilitate the operator to open the grouting.

[0025] The internal cavity capacity of the grouting bucket 1 is at least 10 L to ensure spraying a certain length of drainage ditch and the reserve for repeated grouting, and to avoid repeated addition of the cementing solution.

[0026] A hole 13 is provided on the top cover 11, and a rubber plug is provided on the hole 13. During grouting, the slurry can communicate with the atmosphere to avoid the formation of negative pressure in the grouting bucket during grouting and prevent grouting. A wire is provided on the top cover 11 to fix the rubber plug to prevent the rubber plug from falling off.

[0027] The grid spraying trough 31 is a grid-shaped hollow structure.

[0028] A handrail 32 is provided on the trolley 3, and four rollers 33 are provided at the bottom of the trolley 3 to facilitate the operator to push the reinforcement device to repeatedly spray and grout the solution.

[0029] The pipeline 5 is a rubber hose, and nuts are provided on both sides. The nuts can connect the liquid distributor 4 and the nozzle 6.

[0030] Function of urease: Urease is an enzyme that can catalyze the hydrolysis of urea, and this process generates ammonia (NH3) and carbon dioxide (CO2). Under alkaline conditions, carbon dioxide can further react with water to form carbonate ions (CO3 2- ).

[0031] Urea hydrolysis reaction: The chemical reaction of urease-catalyzed hydrolysis of urea ((NH2)2CO) can be expressed as:

[0032]

[0033] Under alkaline conditions, the generated NH4 + will be further converted to NH3.

[0034] Formation of calcium carbonate: In an alkaline environment, carbonate ions (CO3 2- ) can combine with calcium ions (Ca 2+ ) to form calcium carbonate (CaCO3) crystals. Calcium chloride (CaCl2) provides calcium ions, and the reaction is as follows:

[0035] Ca 2+ +CO3 2 →CaCO3

[0036] Soil reinforcement: The generated calcium carbonate crystals have a cementing effect, which can bond soil particles together, thereby improving the strength and stability of the soil.

[0037] Specifically, the usage method of the above-mentioned reinforcement device for natural drainage ditches in mountainous areas includes the following steps:

[0038] 1) Prepare a bacterial-urea mixed solution and a calcium chloride-urea mixed solution in the laboratory, store them in a 4°C refrigerator, transport them to the site of the drainage ditch to be reinforced, and uniformly mix the two solutions before spraying;

[0039] 2) Determine the number (the total number of nozzles 6 is greater than the total number of liquid outlets 42) and positions of the nozzles 6 to be arranged according to the width of the drainage ditch and the soil conditions, and connect the liquid inlet 41 of the liquid distributor 4 with the slurry outlet 12, the pipeline 5 with the liquid outlet 42 of the liquid distributor 4 and the nozzles 6;

[0040] 3) Check whether the device leaks. If there is no leakage, the next step can be carried out;

[0041] 4) Open the top cover 11, inject the mixed solution into the grouting bucket 1, and close the top cover 11;

[0042] 5) Open the rubber stopper to make the inside of the grouting bucket 1 communicate with the outside;

[0043] 6) Push the trolley 3 and repeatedly spray the mixed solution on the drainage ditch 6 - 7 times.

[0044] The above specific embodiments are used to explain the present utility model, and are only the preferred embodiments of the present utility model, rather than limiting the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the claims of the present utility model fall within the protection scope of the present utility model.

Claims

1. A reinforcement device for natural drainage ditches in mountainous areas, characterized in that: It comprises a grouting bucket (1), a fixed bracket (2), and a trolley (3), wherein the trolley (3) is provided with a fixed bracket (2), and the grouting bucket (1) is mounted on the fixed bracket (2); The grouting barrel (1) contains a urease mixed solution, and a slurry outlet (12) is provided at the bottom of the grouting barrel (1), and the slurry outlet (12) is connected to a liquid inlet (41) of a liquid distributor (4), and the liquid distributor (4) is provided with a plurality of liquid outlets (42). The flat plate portion of the cart (3) is provided with a grid spraying trough (31), and an array nozzle (6) is provided in the grid spraying trough (31), and the liquid outlet (42) is connected to the nozzle (6) via a pipe (5); The number of the nozzles (6) is not less than the number of the liquid outlets (42).

2. The reinforcement device for natural drainage ditches in mountainous areas according to claim 1, characterized in that: The top of the grouting barrel (1) is provided with a top cover (11).

3. The reinforcement device for natural drainage ditches in mountainous areas according to claim 2 is characterized in that: The top cover (11) is provided with a hole (13).

4. The reinforcement device for natural drainage ditches in mountainous areas according to claim 3 is characterized in that: A rubber plug is provided on the hole (13).

5. The reinforcement device for natural drainage ditches in mountainous areas according to claim 1, characterized in that: The grid spraying slot (31) is a grid-shaped hollow structure.

6. The reinforcement device for natural drainage ditches in mountainous areas according to claim 1, characterized in that: The cart (3) is provided with a handrail (32).

7. The reinforcement device for natural drainage ditches in mountainous areas according to claim 1, characterized in that: Four rollers (33) are provided at the bottom of the cart (3).

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