Automatic grouting repair device for karst collapse based on microbial mineralization

Abstract

The utility model discloses an automatic grouting repair device for karst collapse based on microbial mineralization, which belongs to the ecological repair technology for karst collapse based on microbial mineralization and comprises a slurry storage system, a carrier for storing microorganisms, a self-adaptive grouting system and a dynamic monitoring system, the device is installed in a karst subsidence area to be reinforced; the grouting liquid storage pool is connected with a grouting pipe through a grouting pump and a grouting pipeline in sequence, and the function of grouting and reinforcing soil is achieved. According to the device, a microbial grouting reinforcement technology is adopted, the problem of environmental pollution caused by traditional concrete grouting is greatly relieved, the slurry viscosity is small, the reinforcement diffusion range is wider under low pressure, and disturbance to the stratum is small. And after the soil parameter data reaches a preset value, soil body reinforcement is completed, and then equipment is dismantled for recycling.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field technology field of microbial mineralization repair, especially a karst collapse automatic grouting repair device based on microbial mineralization. BACKGROUND

[0002] The karst ground collapse treatment method mainly includes excavation backfill method, crossing method, drilling inflation method and grouting method, and in actual engineering, the appropriate collapse treatment method should be selected according to the collapse scale and collapse degree. The excavation backfill method can effectively improve the foundation bearing capacity by digging the hidden danger or the soil layer of the collapse area and backfilling blocks to the soil layer, but it will have a great impact on the surface traffic and the surrounding environment. The crossing method is suitable for the area with large collapse area by constructing the beam foundation and the arch structure flat plate foundation in the collapse area to cross the karst cave and avoid the geological disasters in the collapse area. The drilling inflation method adjusts the air pressure of the karst cave by drilling and inflation to achieve the effect of balancing the water pressure and reducing the possibility of air explosion in the collapse area, and it is mainly used for the karst ground collapse caused by the rise and fall of underground water level. The grouting method has little impact on the ground traffic and underground pipeline, and has become an effective method for treating karst ground collapse.

[0003] The current traditional concrete grouting technology for repairing karst collapse has the problems of serious pollution and high cost, and there is a risk of collapse disaster after grouting repair. Therefore, an ecological repair device for karst collapse with better effect is needed. UTILITY MODEL CONTENT

[0004] Therefore, the purpose of the utility model is to provide a karst collapse automatic grouting repair device based on microbial mineralization, which uses the substances produced by microorganisms to make the loose soil compact and thus reinforce the soil, preventing the occurrence of karst collapse disaster.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] The karst collapse automatic grouting repair device based on microbial mineralization provided by the utility model comprises a truss support structure, and the truss support structure is provided with a stored grout system, a microbial carrier storage system, a grouting system and an energy storage system.

[0007] The stored grout system is used for storing the grout needed to be grouted into the karst collapse area.

[0008] The microbial carrier storage system is used for storing the microbial carrier needed to be mixed with the grout.

[0009] The stored grout system and the microbial carrier storage system are respectively connected with the grouting system.

[0010] The grouting system is used for grouting the mixed slurry and microbial carrier into the karst collapse area.

[0011] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0012] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0013] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0014] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0015] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0016] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0017] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0018] Further, the truss support structure comprises a platform and a pile foundation; the pile foundation is arranged under the ground of the area to be repaired, and is used for supporting the platform arranged on the ground; the platform is used for supporting any one or more of the following systems: a slurry storage system, a microbial carrier storage system, a system grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0019] The utility model discloses a beneficial effect lies in:

[0020] The utility model provides a kind of automatic grouting repair device of karst collapse based on microbial mineralization belongs to ecological restoration technology of karst collapse based on microbial mineralization, and the device includes storage slurry system, the carrier of storage microorganism, grouting system and dynamic monitoring system;The device is installed in the karst collapse area to be reinforced;MICP grouting liquid storage pond is connected in sequence by grouting pump, grouting pipeline and grouting pipe, realizes MICP grouting and reinforces soil function.This device uses microbial grouting reinforcement technology, greatly reduces the environmental pollution problem due to traditional concrete grouting, MICP slurry viscosity is small, and reinforcement diffusion range is wider under low pressure, and stratum disturbance is smaller.Pressure sensor and bending element are used to feed the data of reinforced soil to computer system in real time, and computer is adjusted according to feedback data MICP grouting speed and pressure, so as to achieve the maximization of economic benefit, and soil parameter data reaches predetermined value, and soil reinforcement is completed, and then equipment is removed and recycled.

[0021] Other advantages, objects and features of the present utility model will be explained in the following description, and to some extent, it will be obvious to those skilled in the art based on the study of the following, or can be taught from the practice of the present utility model. The objects and other advantages of the present utility model can be achieved and obtained by the following description. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to make the purpose, technical scheme and beneficial effect of the utility model more clear, the utility model provides the following drawings for explanation.

[0023] Figure 1 It is automatic grouting repair device for karst collapse based on microbial mineralization schematic view.

[0024] In the drawing, 1 indicates truss support structure, 11 indicates platform, 12 indicates pile foundation;2 indicates storage slurry system;3 indicates microbial carrier storage system;4 indicates grouting system, 41 indicates grouting pump, 42 indicates slurry passage;5 indicates energy storage system;6 indicates solar cell system;7 indicates dynamic monitoring system;71 indicates computer control system, 72 indicates display module, 73 indicates pressure sensor. DETAILED DESCRIPTION

[0025] The utility model will be further explained in connection with the drawings and specific embodiment, so that those skilled in the art can better understand the utility model and can be implemented, but the embodiment is not as the limitation of the utility model.

[0026] As Figure 1 Indicated, Figure 1The embodiment provides a microbial mineralization-based karst collapse automatic grouting repair device, and the device comprises a truss support structure, a platform, a pile foundation, a slurry storage system, a microbial carrier storage system, a grouting system, a dynamic monitoring system, an energy storage system and a solar cell system.

[0027] The truss support structure is used for mounting the slurry storage system, the microbial carrier storage system, the grouting system, the dynamic monitoring system, the energy storage system and the solar cell system.

[0028] The slurry storage system is used for storing slurry which needs to be grouted into a karst collapse area.

[0029] The microbial carrier storage system is used for storing microbial carriers which need to be mixed with the slurry.

[0030] The microbial carrier storage system comprises a support and protection layer, an adsorption and slow-release layer, a microbial immobilization and release layer and a hierarchical pore system.

[0031] The microbial carrier storage system in the embodiment is specifically arranged in the following manner:

[0032] The support and protection layer is arranged in the following manner:

[0033] Structure: dense porous three-dimensional framework, pore size 500-1000 mu m, providing mechanical strength and compression resistance.

[0034] Function: protect the internal structure and prevent premature release of the microorganisms caused by external moisture penetration.

[0035] Some areas are designed as charge regulation zones to enhance the stability of the immobilized microorganisms.

[0036] The intermediate layer (the adsorption and slow-release layer) is arranged in the following manner:

[0037] Structure: nanoporous network, pore size 50-200 mu m.

[0038] Function: adsorb external pollutants and protect the internal microorganisms.

[0039] Integrated slow-release nutrient sources (such as microencapsulated carbon sources or mineral particles) slowly release for microbial metabolism.

[0040] The inner layer (microbial immobilization and release layer) is arranged as follows:

[0041] Structure: sponge-like nanoporous structure, pore size 5-50 μm.

[0042] Function: microbial embedding and immobilization, ensuring high loading capacity.

[0043] Environment-responsive release mechanism (such as pH / humidity-sensitive materials) controls the slow release of microorganisms in the target environment.

[0044] The hierarchical pore system is arranged as follows:

[0045] Macroscopic pores (outer layer): pore size 500-1000 μm, ensuring gas exchange and small amount of water transmission between the storage system and the outside.

[0046] Mesoporous network (middle layer): pore size 50-200 μm, providing diffusion channels for microbial metabolites and regulating the permeation rate of nutrients.

[0047] Micropores / nanopores (inner layer): pore size 5-50 nm, providing a protective microenvironment for aerobic microorganisms and reducing microbial mortality during storage.

[0048] The storage slurry system and the microbial carrier storage system are respectively connected to the grouting system;

[0049] The grouting system is used to mix the slurry and the microbial carrier under the control of the dynamic monitoring system and then grout into the karst collapse area; the grouting system includes a grouting pump and a slurry channel, the grouting pump is connected to the grouting system and the energy storage system, the energy storage system is used to provide power for the grouting pump, the grouting system is used to control the grouting pump to inject the mixed liquid of the slurry and the microbial carrier into the karst collapse area through the slurry channel; the grouting pump is connected to the storage slurry system;

[0050] The grouting system in this embodiment is a self-adaptive grouting system;

[0051] The dynamic monitoring system is connected to the grouting system, used to control the working state of the grouting system and collect the monitoring signals of the karst collapse area; the dynamic monitoring system includes a computer control system, a display module, and a pressure sensor; the computer control system is connected to the display module and the pressure sensor, the display module is used to output the signals output by the computer control system, and the pressure sensor is arranged in the soil of the karst collapse area to collect the soil reinforcement data and transmit them to the computer control system.

[0052] In this embodiment, the computer control system is connected to the LabVIEW (NI) platform, receives the data returned by the pressure sensor and the bending element, and then processes the data through existing technical means.

[0053] The energy storage system is used to provide energy for the entire device and is connected with the slurry storage system, the microbial carrier storage system, the grouting system and the dynamic monitoring system respectively; the solar cell system is installed on the truss support structure and connected with the energy storage system, and is used to convert solar energy into electric energy of the energy storage system;

[0054] The karst collapse automatic grouting repair device based on microbial mineralization provided in this embodiment can be installed in a karst collapse area to be reinforced; after the entire device is built, the grouting pump is connected with the slurry storage system and the microbial carrier storage system through the grouting pipeline or the grouting pipe, a grouting liquid storage pool based on MICP (Microbially Induced Carbonate Precipitation) is built, and the MICP grouting soil reinforcement function is realized. The device uses the microbial grouting reinforcement technology, greatly reduces the environmental pollution problem caused by traditional concrete grouting, the MICP slurry has small viscosity, has a wider reinforcement diffusion range under low pressure, and has smaller stratum disturbance. MICP (Microbially Induced Carbonate Precipitation) is a biological mineralization technology that combines calcium ions and substrates such as urea in the environment to generate calcium carbonate (CaCO3) precipitation through microbial metabolic activity. These calcium carbonate crystals can fill soil pores and cement soil particles, thereby enhancing the strength and stability of the soil body, and MICP is an environmentally friendly and low-energy geotechnical reinforcement method.

[0055] Meanwhile, the pressure sensor and the bending element are used to feed the reinforced soil data to the computer system in real time, the computer adjusts the MICP grouting speed and pressure according to the feedback data, so as to maximize the economic benefit, and when the soil parameter data reaches the predetermined value, the soil reinforcement is completed, and then the equipment is removed for recycling. The bending element is arranged outside the pressure sensor, and the shear wave speed of the biocemented soil sample is tested through the bending element, and when the test result of the shear wave speed meets the cementation requirement, the system is started to start grouting slurry reinforcement.

[0056] The karst collapse automatic grouting repair device based on microbial mineralization provided by the embodiment is used in the field of microbial mineralization repair, and the device comprises a ground part and an underground part, comprises a ground bearing platform with a pile foundation, the bearing platform is hollow, and a grouting system is arranged in the bearing platform; the bottom of the grouting system is a slurry channel, and a pressure sensor and a bending element are installed at the bottom of the slurry channel; an energy storage system is loaded on the bearing platform, a computer control system is installed on the right energy storage system, and the computer control system is connected with a display module; a grouting pump is equipped on the bearing platform, and the grouting pump is connected with the grouting system; a truss support structure is arranged on the bearing platform, the truss support structure is connected with a device platform, and a solar panel is installed at the top of the truss support structure; the device platform is provided with a microbial storage device and a liquid storage system; the liquid storage system is connected with the grouting pump; the computer system controls the microbial storage device, the liquid storage system, the energy storage system and the grouting pump; the energy storage system supplies power for the karst collapse automatic grouting repair device based on microbial mineralization; and the device automatically repairs the karst collapse area by using microbial mineralization and solar energy, and solves the problem of small-scale soil collapse. The device provided by the embodiment is suitable for small soil hole collapse repair, and is a clean, efficient and reusable automatic grouting repair system.

[0057] The above-described embodiments are only preferred embodiments for fully illustrating the present application, and the protection scope of the present application is not limited thereto. Any equivalent replacement or transformation of the present application based on the present application is within the protection scope of the present application. The protection scope of the present application is subject to the claims.

Claims

1. An automatic grouting repair device for karst collapse based on microbial mineralization, characterized in that: It includes a truss support structure, which is equipped with a slurry storage system, a microbial carrier storage system, a grouting system, and an energy storage system; The slurry storage system is used to store the slurry that needs to be injected into the karst collapse area; the microbial carrier storage system is used to store the microbial carrier that needs to be mixed with the slurry; the slurry storage system and the microbial carrier storage system are respectively connected to the grouting system; the grouting system is used to mix the slurry and the microbial carrier and then inject it into the karst collapse area.

2. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 1, characterized in that: The truss support structure includes a platform and pile foundations; the pile foundations are located below the ground in the area to be repaired and are used to support the platform located on the ground; the platform is used to support any one or more of the following systems: slurry storage system, microbial carrier storage system, system grouting system, dynamic monitoring system, energy storage system, and solar cell system.

3. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 1, characterized in that: It also includes a solar cell system; the solar cell system is installed on the truss support structure and connected to the energy storage system to convert solar energy into electrical energy for the energy storage system.

4. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 1, characterized in that: It also includes a dynamic monitoring system; the dynamic monitoring system is installed on the truss support structure and is connected to the grouting system to control the working status of the grouting system and collect monitoring signals from the karst collapse area.

5. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 4, characterized in that: The dynamic monitoring system includes a computer control system, a display module, and a pressure sensor. The computer control system is connected to the display module and the pressure sensor respectively. The display module is used to output the signal output by the computer control system. The pressure sensor is set in the soil of the karst collapse area to collect soil reinforcement data and transmit it to the computer control system.

6. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 4, characterized in that: The grouting system, under the control of a dynamic monitoring system, mixes grout and microbial carriers and then injects them into the karst collapse area.

7. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 1, characterized in that: The grouting system includes a grouting pump and a grout channel. The grouting pump is connected to the grouting system and an energy storage system. The energy storage system is used to provide power to the grouting pump. The grouting system is used to control the grouting pump to inject a mixture of grout and microbial carrier into the karst collapse area through the grout channel.

8. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 7, characterized in that: The grouting pump is connected to the grout storage system.

9. The automatic grouting repair device for karst collapse based on microbial mineralization as described in claim 1, characterized in that: The microbial carrier storage system is used to store microbial carriers that need to be mixed with slurry. The microbial carrier storage system includes a support and protective layer, an adsorption and slow-release layer, a microbial immobilization and release layer, and a hierarchical pore system. The support and protective layer is provided with a porous framework for setting the intermediate layer, inner layer, and hierarchical pore system. The adsorption and slow-release layer is provided with a nanoporous network. The microbial immobilization and release layer is provided with a sponge-like nanoporous structure for releasing microorganisms. The hierarchical pore system is provided with channels of different pore sizes for transporting exchange substances.

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