A multi-stage treatment method utilizing underground space of abandoned mines

Abstract

The present application provides a multi-stage treatment method for utilizing the underground space of abandoned mines, which relates to the technical field of abandoned mine utilization, including: transforming the target mine area, determining the mine area to be transformed, the transformation method includes deploying injection holes and exhaust holes based on the mine layout structure, and curtain grouting treatment, and determining the mine transformation strategy based on two-order decision-making and optimization based on low-dimensional simulation of necessary layout characteristics; making reuse treatment decisions for the transformed mine area and formulating a mine utilization plan; adding injection components and exhaust components to perform full-cycle automatic control based on the mine utilization plan. The present application solves the technical problem that the existing technology has failed to fully realize the potential of the underground space of abandoned mines and has low resource utilization efficiency due to the single reuse model of the underground space of abandoned mines and the lack of a systematic transformation plan, and achieves the technical effect of improving the resource utilization rate of the underground space of abandoned mines and enhancing the urban environmental benefits.

Description

Technical Field

[0001] The present application relates to the technical field of abandoned mine utilization, and in particular to a multi-stage treatment method for utilizing the underground space of abandoned mines. Background Art

[0002] With the exploitation and depletion of mineral resources, a large number of mines have gradually entered the abandoned stage. The underground space of these abandoned mines still has a high utilization value and can be used in storage, ecological governance, waste disposal and other fields to provide continuous services to society. The existing methods for the reuse of underground space in abandoned mines mainly include using mine tunnels as storage space for various items, such as explosive and toxic items, daily necessities, etc.; they can also be used as entertainment, sightseeing, cultural, sports space, as well as breeding and planting space. However, the current model for the reuse of underground space in abandoned mines is relatively conventional and single, mainly focusing on simple functional conversion, lacking a systematic solution, and unable to fully tap the potential of underground space in abandoned mines; and lacking an environmentally friendly resource recycling method, it is difficult to combine with the sustainable development needs of cities. Summary of the Invention

[0003] This application provides a multi-level treatment method for utilizing the underground space of abandoned mines, which solves the technical problems in the existing technology of the failure to fully tap the potential of the underground space of abandoned mines and low resource utilization efficiency due to the single reuse model of the underground space of abandoned mines and the lack of systematic transformation plans. It achieves the technical effect of improving the resource utilization rate of the underground space of abandoned mines and enhancing the urban environmental benefits.

[0004] In view of the above problems, on the one hand, the present application provides a multi-level treatment method for utilizing the underground space of abandoned mines, wherein the method includes: transforming the target mine area and determining the transformed mine area, wherein the transformation method includes deploying injection holes and exhaust holes based on the mine layout structure, and curtain grouting treatment, and determining the mine transformation strategy by two-order decision-making and optimization based on low-dimensional simulation under necessary layout characteristics; making reuse treatment decisions for the transformed mine area and formulating a mine utilization plan, wherein the mine utilization plan includes classifying and crushing degradable garbage-adding anaerobic microorganisms-hole injection-discharging and exhaust; for the transformed mine area, adding injection components and exhaust components, and executing full-cycle automatic control based on the mine utilization plan.

[0005] Preferably, the transformation of the target mine area includes: interactive mine layout structure, low-dimensional simulation by screening necessary layout features, and determining the mine simulation layout; based on the mine simulation layout, first-order transformation decisions are made for spatial segmentation and reconstruction, and second-order transformation decisions are made for the deployment of injection holes and exhaust holes to determine the mine transformation strategy.

[0006] Preferably, a first-order transformation decision is made for spatial segmentation and reconstruction, including: determining spatial constraints based on mine utilization needs; making a spatial segmentation judgment on the mine layout structure based on the spatial constraints; if yes, making a three-dimensional segmentation decision on the mine simulation layout based on the spatial constraints, and determining a segmentation and reconstruction strategy.

[0007] Preferably, a second-order transformation decision is made for the deployment of injection holes and exhaust holes, including: determining the initial hole deployment strategy with the number of holes as the first variable, the relative position of the holes as the second variable, and the hole geometric characteristics as the third variable; taking the segmentation and reconstruction strategy as the starting condition, performing injection pile simulation and airflow circulation simulation for the initial hole deployment strategy to determine the first utilization; setting a variable iteration method, performing adjustment simulation and utilization analysis on the initial hole deployment strategy, performing optimal comparison based on the first utilization, executing multiple rounds of iterations, and determining the hole deployment strategy by selection.

[0008] Preferably, the mine transformation strategy includes a segmentation and reconstruction strategy and a hole deployment strategy. The target mine area is first transformed using the hole deployment strategy, and the second transformation is performed using the segmentation and reconstruction strategy to determine the transformed mine area, wherein the first transformation is a drilling transformation above the mine, and the second transformation is a curtain grouting transformation, and the curtain grouting transformation includes mine wall-segmentation position-hole wall.

[0009] Preferably, in the mine utilization plan, the classification and crushing of degradable garbage - addition of anaerobic microorganisms - hole injection - discharge and exhaust are carried out, including: determining the degradable garbage through pre-classification; crushing and pulping the degradable garbage by controlling the crushing equipment to determine the degradable slurry; introducing anaerobic microorganisms, proportioning and adding the degradable slurry to determine the pretreated slurry; controlling the pretreated slurry to be injected from the injection port into the modified mine area with a preset grouting volume and a preset grouting speed, wherein the injection port includes at least one.

[0010] Preferably, before the degradable slurry is added in proportion, the process includes: obtaining a fermentation equation, determining a first ratio and a second reaction gas, wherein the first ratio is a mixing ratio of anaerobic microorganisms to degradable slurry, and the second reaction gas is methane gas with a production amount indicated; according to the first ratio, the anaerobic microorganisms are added to the degradable slurry in proportion; and according to the second reaction gas, gas is extracted based on the exhaust hole.

[0011] Preferably, full-cycle automatic control based on the mine utilization plan is executed, including: determining a stage control sequence based on the mine utilization plan; performing component parameter control conversion and determining an equipment parameter control sequence according to the stage control sequence; and performing mine utilization management and control in response to the mine utilization plan according to the equipment parameter control sequence.

[0012] Preferably, after determining the stage control sequence, it includes: determining a periodic generation curve based on the second reaction gas for the fermentation stage of the stage control sequence; traversing the periodic generation curve to determine multiple curve nodes and fermentation termination nodes, wherein the nodes are divided according to the generation trend of the second reaction gas; using the multiple curve nodes as parameter adjustment nodes of the exhaust component, and using the fermentation termination node as a waste processing node.

[0013] Preferably, mine utilization management and control is performed in response to the mine utilization plan, including: building a connecting pipeline to connect the exhaust component and the gas-generating unit, and connecting a purification component in the connecting pipeline; the second reaction gas enters the connecting pipeline, is purified by the purification component, and is transported to the gas-generating unit for secondary utilization.

[0014] One or more technical solutions provided in this application have at least the following beneficial effects:

[0015] By identifying the mine area for renovation, deploying injection and exhaust holes based on the mine layout, and implementing curtain grouting, the necessary physical conditions and safety guarantees are established for subsequent reuse. A two-order decision-making and optimization approach based on low-dimensional simulation of necessary layout features ensures the scientific and rational nature of the renovation, making the renovated mine area more suitable for subsequent reuse. Reuse decisions are made for the renovated mine area, and a mine utilization plan is formulated. Through steps such as sorting and crushing biodegradable waste, adding anaerobic microorganisms, hole injection, and exhaust gas discharge, mine waste is effectively treated, enabling resource reuse while minimizing environmental pollution. Injection and exhaust components are installed in the renovated mine area, implementing full-cycle automated control based on the mine utilization plan. This is the execution and assurance step of the plan. By installing the necessary equipment and implementing full-cycle automated control, the mine utilization plan is successfully implemented, improving operational accuracy and efficiency, reducing manual intervention, mitigating operational risks, and ensuring the stability and safety of the entire utilization process.

[0016] To sum up, this application fully utilizes the underground space resources of abandoned mines and improves the comprehensive utilization rate of resources through systematic transformation and scientific and reasonable reuse and treatment decisions; at the same time, it adopts environmentally friendly resource recycling methods to reduce the pollution of waste to the environment, realizes green and low-carbon space reuse, and improves urban environmental benefits; in addition, the realization of full-cycle automatic control improves the safety and stability of operations, promotes the sustainable development of resource-based cities, and realizes the organic unity of economic benefits, social benefits and environmental benefits.

[0017] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic flow chart of a multi-stage treatment method utilizing underground space of abandoned mines provided in an embodiment of the present application.

[0019] Figure 2 A flowchart of a first-order transformation decision for spatial segmentation and reconstruction in a multi-level processing method for underground space of abandoned mines provided in an embodiment of the present application.

[0020] Figure 3 A schematic flow chart of a second-order transformation decision for the deployment of injection holes and exhaust holes in a multi-stage treatment method utilizing underground space of abandoned mines provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The embodiment of the present application provides a multi-level treatment method for utilizing the underground space of abandoned mines, thereby solving the technical problems in the prior art of the failure to fully realize the potential of the underground space of abandoned mines and the low resource utilization efficiency due to the single reuse model of the underground space of abandoned mines and the lack of a systematic transformation plan. The method achieves the technical effect of improving the resource utilization rate of the underground space of abandoned mines and enhancing the urban environmental benefits.

[0022] like Figure 1 As shown, an embodiment of the present application provides a multi-stage treatment method for utilizing underground space of abandoned mines, the method comprising:

[0023] Step S1: Perform transformation processing on the target mine area to determine the transformed mine area, wherein the transformation method includes deploying injection holes and exhaust holes based on the mine layout structure, and curtain grouting processing, so as to determine the mine transformation strategy based on two-order decision-making and optimization of low-dimensional simulation under necessary layout characteristics.

[0024] Specifically, a target mine area refers to the specific underground space within an abandoned mine selected for renovation and reuse. For example, this could be a mine that has been closed for years and its surrounding underground tunnels. The mine's layout and structure, such as the depth, width, and connectivity of its tunnels, are analyzed to identify the most suitable areas for renovation, known as the mine renovation area.

[0025] Due to the complex underground spaces of abandoned mines, low-dimensional simulations are needed to simplify the model and more efficiently implement renovation strategies. First, the mine's layout structure is analyzed and essential layout features are identified. These essential layout features are key factors that require consideration and optimization during mine renovation, including the mine's internal structure and spatial distribution, including tunnel types, mining area divisions, ventilation systems, and transportation systems. During the simulation process, geological modeling software (such as 3DMin) is used to create a simple dimensional mathematical or physical model based on the essential layout features to simulate the mine's conditions. Low-dimensional simulations are then performed using simulation analysis tools. Renovation decisions are made and the most suitable solution is identified in two phases. For example, in the first phase, the optimal placement of injection holes and exhaust vents is determined. Injection holes are used to inject the corresponding materials for subsequent processing (such as reinforcement and filling), while exhaust vents are used to exhaust gases generated during processing. In the second phase, a curtain grouting solution is determined based on the specific conditions of the mine (such as geological stability and the presence of leakage risks). Curtain grouting involves injecting a slurry (such as cement slurry) around specific areas of the mine, creating a curtain-like barrier structure. The goal is to reinforce the surrounding rock structure and prevent groundwater leakage. For example, in areas of the mine near underground aquifers, curtain grouting can be used to prevent groundwater from entering the mine renovation area.

[0026] Through two-order decision-making and optimization based on low-dimensional simulation of necessary layout features, the optimal mine transformation strategy is determined, injection holes and exhaust holes are reasonably deployed, and a curtain grouting treatment plan is determined, which helps to smoothly carry out subsequent processing operations and improve the efficiency and quality of the transformation.

[0027] Step S2: making a decision on reuse treatment for the transformed mine area and formulating a mine utilization plan, wherein the mine utilization plan includes classifying and crushing degradable waste - adding anaerobic microorganisms - injecting materials into holes - discharging and venting.

[0028] Specifically, after determining the area to be renovated, functional planning and a specific mine utilization plan are needed. For example, one section of the mine could be designated as a waste disposal area and another as a resource recovery area. The mine utilization plan includes sorting and crushing biodegradable waste, introducing anaerobic microorganisms, injecting materials through holes, and then exhausting the materials. First, the biodegradable waste is sorted and crushed to make it more suitable for microbial decomposition. Then, the introduction of anaerobic microorganisms promotes waste decomposition and generates biogas. Through pre-installed injection holes, injection equipment (such as an injection pump) injects substances (such as nutrient solution) that promote microbial reactions or aid waste treatment into the waste disposal area within the mine. Finally, exhausting the materials is performed. Processed products (such as waste residues) are transported out of the mine using conveyor belts or other transportation equipment. Exhaust gases (such as methane) are discharged through pre-installed exhaust holes using ventilation equipment.

[0029] By making decisions about reuse and developing a mine utilization plan, we achieve efficient waste treatment and resource utilization, reducing environmental pollution. Furthermore, the biogas produced through anaerobic fermentation can be used as a clean energy source, significantly reducing carbon emissions and promoting sustainable urban development.

[0030] Step S3: For the modified mine area, an injection assembly and an air extraction assembly are installed to execute full-cycle automatic control based on the mine utilization plan.

[0031] Specifically, injection and extraction components will be installed within the renovated mine area to achieve full-cycle automated control of the mine utilization plan. The injection component is a set of equipment used to inject materials into the mine, including injection pumps, pipes, valves, and other components. The extraction component is a set of equipment used to extract gases from the mine, including extraction pumps, ventilation ducts, and gas collection devices. For example, the injection component can use a high-pressure injection pump to transport waste slurry from the treatment area to a designated location within the mine via a pipe. The extraction component uses a high-efficiency extraction pump to extract the generated gas from the mine through a pipe. The extracted gas (methane) is purified and processed to meet power generation needs, and the heat generated can be used for heating and other purposes. The injection and exhaust components are equipped with sensors and automation controllers (such as PLC-programmable logic controller). The sensors are used to monitor the execution process of the mine utilization plan, such as gas concentration sensors for monitoring the gas composition and concentration in the exhaust gas, and liquid level sensors for monitoring the liquid level of the injection material. The automation controller sets various parameters of injection and exhaust (such as injection time interval, injection amount, exhaust speed, etc.) through programming, and automatically adjusts the equipment operation according to the preset control logic.

[0032] The implementation of full-cycle automated control significantly improves operational accuracy and efficiency, reduces manual intervention, and mitigates operational risks. Furthermore, the automated system can monitor and adjust operating parameters in real time, ensuring the stability and safety of the entire treatment process, further enhancing resource utilization efficiency and environmental benefits.

[0033] Furthermore, step S1 of the embodiment of the present application includes:

[0034] Step S11: Interactive mine layout structure, performing low-dimensional simulation by screening necessary layout features to determine the mine simulation layout.

[0035] Step S12: Based on the simulated mine layout, a first-order transformation decision is made for the spatial segmentation and reconstruction, and a second-order transformation decision is made for the deployment of injection holes and exhaust holes to determine the mine transformation strategy.

[0036] Specifically, data sources such as historical mine mining data and geological exploration reports are used to interactively acquire information on the mine's layout structure (such as the distribution of tunnels, pit size and shape), geological conditions (rock type, stratigraphic structure), and hydrological conditions (proximity to aquifers, groundwater flow direction, etc.). Based on the mine's geological conditions, mining history, and future utilization requirements, this mine layout information is then filtered to identify essential layout features, such as the orientation of major tunnels and the location of key support structures. For example, by calculating key indicators such as channel connectivity, mine depth, ventilation conditions, and surrounding rock stability, essential layout features such as major tunnels, mining areas, and ventilation shafts are identified. Then, using geometric modeling tools (such as AutoCAD and SketchUp), the basic geometry and structural relationships of the mine are constructed based on these identified layout features, thereby determining the simulated mine layout, such as a simplified geometric model of the mine including major tunnels, mining areas, and ventilation shafts. By interactively analyzing the mine layout structure and filtering essential layout features, unnecessary data processing can be reduced and simulation efficiency improved. The mine simulation layout obtained by low-dimensional simulation can meet the needs of subsequent process deduction, providing a simplified but effective basic model for transformation decisions, avoiding the high cost and long cycle problems caused by overly complex simulation.

[0037] Based on the simulated mine layout constructed above, first-order renovation decisions are made based on the mine's utilization needs, such as waste disposal and resource recovery, taking into account factors such as the size, shape, and existing structure of the mine's internal space. The mine's internal space is re-divided and a spatial partitioning and reconstruction scheme is determined to meet different functional requirements. After the spatial partitioning and reconstruction scheme is determined in the first-order renovation decision, a second-order renovation decision is made, considering the placement of injection and exhaust vents. Based on the new spatial layout, it is determined which areas require injection (such as the waste disposal area, which may require nutrient solution injection) and which areas require exhaust (such as the microbial reaction area, which generates gas and needs to be exhausted). The requirements for injection and exhaust are analyzed, such as injection flow rate and exhaust pressure. Based on these requirements, the location, number, and specifications of the injection and exhaust vents are determined, taking into account the mine's geological conditions (such as rock permeability) and existing structures (such as the availability of existing access channels). The first-order and second-order decisions are combined to determine the final mine renovation plan.

[0038] First-order renovation decisions enable the rational replanning of the mine's internal space to meet the functional requirements of reuse, improving space utilization efficiency and adaptability. Second-order renovation decisions ensure the rational placement of injection and exhaust ports, providing an effective foundation for subsequent mine renovation and reuse operations (such as injection and exhaust), ensuring these operations can proceed smoothly and improving the feasibility and effectiveness of the entire mine renovation strategy.

[0039] Further, such as Figure 2 As shown, in step S12 of the embodiment of the present application, a first-order transformation decision is made for the spatial segmentation reconstruction, including:

[0040] Step S121: Determine spatial constraints based on mine utilization requirements.

[0041] Step S122: performing spatial segmentation determination on the mine layout structure according to the spatial constraint conditions.

[0042] Step S123: If yes, perform a three-dimensional segmentation decision on the simulated mine layout based on the spatial constraint conditions and determine a segmentation and reconstruction strategy.

[0043] Specifically, mine utilization requirements refer to functional requirements determined based on the post-conversion mine's intended use, such as waste disposal, resource recovery, or recreational tourism. Spatial constraints refer to the requirements within the mine's interior regarding size, shape, ventilation, and load-bearing capacity to ensure the converted mine can safely and effectively meet utilization requirements. Based on the post-conversion mine's intended use, the requirements of each functional area are analyzed to determine spatial constraints. For example, the waste disposal area requires sufficient space to accommodate the waste slurry and microbial reactor, as well as a robust ventilation and exhaust system. Based on the needs analysis, the size, shape, ventilation requirements, and load-bearing capacity of the waste disposal area are determined. For example, in a project to convert an abandoned coal mine into a waste disposal facility, the needs analysis determined that the waste disposal area required at least 1,000 cubic meters of space, along with robust ventilation and exhaust systems. Therefore, spatial constraints include: a minimum space size of 1,000 cubic meters, a ventilation system capable of achieving an air exchange rate of at least five times per hour, and a load-bearing capacity sufficient to support the weight of the waste slurry and reactor. By determining spatial constraints based on mine utilization needs, we can ensure that the renovated mine space can meet actual functional needs and improve the rationality and safety of space utilization.

[0044] Conduct a detailed analysis of the mine's layout structure, studying the relationships among existing tunnels, pits, ventilation shafts, and other structures. Match the spatial constraints to the existing layout to determine which areas meet the constraints and which require adjustment. If the existing layout structure meets the spatial constraints, no large-scale spatial segmentation is necessary. If not, determine the areas that need segmentation and how to segment them.

[0045] When spatial segmentation is necessary, the basic requirements for 3D segmentation are first determined based on spatial constraints. For example, if a mine is to be divided into a waste treatment area, a microbial reaction area, and a discharge area, and the waste treatment area is located in a well-ventilated area, a material transfer channel is available between the microbial reaction area and the waste treatment area, and the discharge area is located near the mine exit, these requirements form the basic basis for 3D segmentation. Next, 3D segmentation is performed on the simulated mine layout using 3D modeling software. The software allows precise configuration of the location, size, and shape of the segments. By drawing the boundaries of different functional areas, the sizes of each area can be adjusted to suit the needs, and a segmentation and reconstruction strategy can be determined. For example, in the 3D model, the waste treatment area is determined to occupy 60% of the area, and the resource recovery area 40%. The segmentation and reconstruction strategy may include: installing a partition wall in the middle of the intersection area to divide the space into two parts; installing injection and exhaust ports in the waste treatment area; and providing transportation channels and storage facilities in the resource recovery area. Through 3D segmentation decisions, a scientific and rational approach to mine space segmentation can be determined, ensuring efficient utilization of the renovated mine space, meeting the functional requirements, and improving the overall renovation effect.

[0046] Further, such as Figure 3 As shown, in step S12 of the embodiment of the present application, a second-order transformation decision is made for the deployment of the injection holes and the exhaust holes, including:

[0047] Step S124: Determine the initial hole deployment strategy with the number of holes as the first variable, the relative positions of the holes as the second variable, and the geometric characteristics of the holes as the third variable.

[0048] Step S125: using the segmentation and reconstruction strategy as a starting condition, and targeting the initial hole deployment strategy, performing injection pile simulation and airflow circulation simulation to determine a first utilization degree.

[0049] Step S126: setting a variable iteration mode, performing adjustment simulation and utilization analysis on the initial hole deployment strategy, performing optimization comparison based on the first utilization, executing multiple rounds of iterations, and determining the optimal hole deployment strategy.

[0050] Specifically, hole quantity refers to the number of injection and exhaust holes required for mine renovation. Hole relative position refers to the relative position of each hole relative to the others, as well as the position of the holes in relation to the mine's internal structures (e.g., tunnels and chambers). Hole geometry refers to geometric parameters such as hole diameter, length, and shape.

[0051] The approximate range for the number of holes is determined based on factors such as the size of the mine and the size of the functional areas after segmentation and reconstruction. The relative placement of the holes is determined by analyzing the mine's structural layout and the material and gas flow requirements. For example, for a large waste disposal area, injection holes can be evenly distributed around the area, while exhaust holes can be located above the area or in locations that facilitate air circulation. Hole geometry is determined based on injection and exhaust requirements and the mine's geological conditions. For injecting more viscous materials, larger diameter injection holes are required. For rapid exhaust of light gases, exhaust holes can be designed with an angled design to better guide airflow. The number of holes, their relative positions, and their geometric characteristics are summarized to determine an initial hole deployment strategy, providing a foundation for subsequent simulation and optimization. For example, in a certain abandoned coal mine renovation project, the initial plan was to deploy three injection holes at the intersection of the mine's main and branch tunnels, and five exhaust holes at higher points in the mine. The injection holes were 0.5 meters in diameter and 10 meters in length; the exhaust holes were 0.3 meters in diameter and 8 meters in length.

[0052] Based on the segmentation and reconstruction strategy and the initial hole placement strategy, a three-dimensional mine model is constructed. Simulation analysis tools are used to simulate the injection and distribution of waste slurry to ensure even slurry distribution. Simultaneously, airflow circulation simulations are performed to simulate the airflow within the mine and ensure smooth gas discharge. For the injection and pile simulations, discrete element simulation software (such as EDEM) can be used, while for the airflow circulation simulations, computational fluid dynamics software (such as Fluent) can be used. Based on the simulation results, the mine space utilization efficiency and functional satisfaction are evaluated to determine the primary utilization factor. For example, for the injection and pile simulations, a quantitative score is assigned based on factors such as the uniformity of material distribution within the mine and the presence of dead spots. For the airflow circulation simulations, a quantitative score is assigned based on factors such as airflow coverage and the presence of stagnant areas. These scores are then combined to determine the primary utilization factor. This primary utilization factor is a comprehensive evaluation metric that measures the effective utilization of mine space by injection and exhaust holes under the initial hole placement strategy. A higher primary utilization factor indicates better injection and exhaust efficiency, and more efficient utilization of mine space.

[0053] The variable iteration method uses predefined rules and methods to change three variables: the number of holes, their relative positions, and their geometric characteristics, allowing for multiple adjustments and optimizations of the initial hole deployment strategy. For example, each iteration can be configured to increase or decrease the number of holes by a certain amount, change their relative positions according to a specific pattern (such as by translating them a certain distance in a certain direction), and adjust their geometric characteristics (such as increasing or decreasing their diameters by a certain proportion). The initial hole deployment strategy is adjusted using the variable iteration method. After each adjustment, the new hole deployment strategy parameters are input into the simulation software, and the injection pile and airflow circulation simulations are repeated to calculate the new utilization. After multiple iterations (e.g., 10 iterations), the utilization obtained in each round is compared with the initial utilization. The hole deployment strategy with the highest utilization is selected as the final hole deployment strategy. During this process, data processing software (such as Excel) can be used to record the iteration parameters, simulation results, and utilization of each round for comparative analysis. For example, in a project to renovate an abandoned coal mine, the number of holes was adjusted within a range of 2 to 5, the relative position of the holes within a range of ±10 meters, and the hole geometry within a range of ±0.1 meter of diameter. After multiple rounds of iteration, it was found that increasing the number of injection holes to 4 and the number of exhaust holes to 6, while also adjusting the hole positions and geometry, increased the utilization rate to 92%.

[0054] Through multiple rounds of iterative optimization, the hole deployment strategy is determined optimally. From numerous iterative results, the hole deployment strategy with the best injection and exhaust effects and the highest utilization of mine space can be selected, thereby improving the utilization efficiency and functional satisfaction of mine space and ensuring the rationality and effectiveness of the transformation plan.

[0055] Furthermore, the mine transformation strategy described in the embodiment of the present application includes a segmentation and reconstruction strategy and a hole deployment strategy. The hole deployment strategy is used to perform a first transformation on the target mine area, and the segmentation and reconstruction strategy is used to perform a second transformation to determine the transformed mine area, wherein the first transformation is a drilling transformation above the mine, and the second transformation is a curtain grouting transformation, and the curtain grouting transformation includes mine wall-segmentation position-hole wall.

[0056] Specifically, the mine transformation strategy includes a segmentation and reconstruction strategy and a hole deployment strategy. The hole deployment strategy implements the first transformation of the target mine area, namely, drilling holes above the mine. The segmentation and reconstruction strategy also implements the second transformation, namely, curtain grouting, which includes the mine wall, segmentation locations, and hole walls. This strategy ensures that the transformed mine area is not only spatially rationalized to meet various functional requirements, but also improves mine utilization efficiency and safety through the strategic deployment of injection and exhaust holes. The following details the transformation strategies from these two aspects.

[0057] Overhead drilling renovation involves drilling holes above the mine shaft according to a predetermined hole layout strategy to form injection and exhaust holes. This primarily aims to provide channels for subsequent waste slurry injection and gas exhaust, ensuring the smooth realization of the mine's reuse function. The specific locations of the holes are determined based on the hole layout strategy. Using surveying instruments (such as a total station), the location of each hole is accurately marked above the mine shaft. Then, appropriate drilling equipment is selected. For smaller diameter holes, a handheld rock drill can be used; for larger diameter holes, a specialized drilling machine is required. During the drilling process, the predetermined hole geometry (such as diameter and inclination angle) must be strictly adhered to. After drilling, the holes are cleaned and inspected to ensure they are free of debris and smooth, ensuring they are ready for subsequent injection or exhaust operations.

[0058] Curtain grouting involves grouting around the mine walls, split points, and borehole walls to create a curtain effect, enhancing mine stability and preventing groundwater infiltration. Its primary purpose is to ensure mine safety and reliability during mine reuse and prevent mine collapse and environmental pollution caused by groundwater infiltration. Curtain grouting of the mine walls begins by cleaning the walls to remove loose rock and debris from the surface, allowing for better adhesion of the slurry. Grouting parameters, including slurry type (such as cement-water glass slurry), injection pressure, and injection volume, are then determined based on the wall's conditions (e.g., rock type and cracks). A grouting pump injects the slurry through pre-installed grouting pipes into cracks in the mine wall or areas requiring reinforcement. For curtain grouting at split points, grouting preparations, such as drilling holes and installing grouting pipes, are performed within a certain range on both sides of the split line, following the split location determined by the split reconstruction strategy. When injecting slurry, the injection speed and pressure must be controlled to ensure that the slurry can form a continuous and uniform reinforcement and anti-seepage structure at the divided locations. For curtain grouting renovation of the hole wall, specialized hole wall grouting equipment is used to inject slurry into the gap between the hole wall and the surrounding rock, improving the stability and sealing of the hole wall.

[0059] Furthermore, step S2 of the embodiment of the present application includes:

[0060] Step S21: Determine degradable waste through pre-classification.

[0061] Step S22: crushing and pulping the degradable garbage by controlling the crushing equipment to determine the degradable slurry.

[0062] Step S23: introducing anaerobic microorganisms and adding them to the degradable slurry in a proportioned manner to determine the pretreated slurry.

[0063] Step S24: controlling the pre-treated slurry to be injected into the reformed mine area from an injection port at a preset grouting volume and a preset grouting speed, wherein the injection port includes at least one.

[0064] Specifically, garbage is preliminarily screened manually or with the help of simple mechanical devices (such as sorting conveyor belts, etc.) to identify and separate degradable garbage from mixed garbage, such as food residues, plant residues, etc. These garbage can be decomposed and transformed by the action of microorganisms under specific conditions.

[0065] Place the pre-sorted biodegradable waste into a crushing device (crusher, grinder, etc.) and crush it according to the equipment's operating procedures. During the crushing process, an appropriate amount of water needs to be added to ensure that the waste is crushed into a slurry, ultimately producing a biodegradable slurry.

[0066] Anaerobic microorganisms are microorganisms that can survive and metabolize in the absence of oxygen. They can decompose biodegradable substances and produce useful metabolites (such as methane). The type and amount of anaerobic microorganisms to be added are determined based on the composition and amount of the biodegradable slurry. The selected anaerobic microorganisms are added to the biodegradable slurry according to the appropriate ratio. During the addition process, stirring equipment (such as a blender) is required to evenly disperse the microorganisms in the slurry to ensure that the microorganisms have sufficient contact with the biodegradable substances in the slurry, thereby obtaining a pretreated slurry.

[0067] The preset grouting volume and injection rate are determined based on the volume and structure of the mine area and the characteristics of the pre-treated slurry to ensure sufficient filling and even distribution of the slurry. For example, the grouting volume per injection can be set at 10 cubic meters and the injection rate at 5 cubic meters per hour. The pre-treated slurry is injected into the reformed mine area through the injection port. Equipment such as a grouting pump can be used to control the grouting volume and injection rate. During the injection process, parameters such as the pressure and flow rate at the injection port are monitored to ensure that the grouting process is carried out according to the preset requirements. This provides suitable conditions for the further decomposition and reaction of degradable substances within the mine, improving treatment efficiency and resource utilization.

[0068] Furthermore, before the biodegradable slurry is added in proportion, the method further comprises:

[0069] Step S23-1: Obtain a fermentation equation and determine a first ratio and a second reaction gas, wherein the first ratio is a mixing ratio of anaerobic microorganisms and degradable slurry, and the second reaction gas is methane gas with a production amount indicated.

[0070] Step S23-2: adding the anaerobic microorganisms to the degradable slurry according to the first ratio.

[0071] Step S23 - 3 : extracting gas through the exhaust hole according to the second reaction gas.

[0072] Specifically, the fermentation equation is a chemical reaction equation that describes the conversion of organic matter into gases such as methane during anaerobic fermentation. By consulting relevant literature or experimental research in microbiology, biochemistry, etc., an anaerobic fermentation equation suitable for treating specific biodegradable slurries can be obtained. The first ratio (the mixing ratio of anaerobic microorganisms and biodegradable slurry) and the amount of methane gas (the second reaction gas) produced are analyzed from the fermentation equation. For example, for kitchen waste slurry, the fermentation equation is: C6H 12 O6→3CH4+3CO2. Through laboratory tests, it was determined that the optimal ratio of methanogens to food waste slurry is 1:100 (volume ratio), and the theoretical methane production is 150 cubic meters of methane per ton of food waste slurry.

[0073] Calculate the amount of anaerobic microorganisms to be added to the biodegradable slurry based on the determined first ratio. For example, if the first ratio is 1:100 (assuming the volume ratio of anaerobic microorganisms to biodegradable slurry) and the volume of biodegradable slurry is 100 liters, then the amount of anaerobic microorganisms required is 1 liter. Then, use a precise metering device (such as a metering pump) to add the calculated amount of anaerobic microorganisms to the biodegradable slurry. During the addition process, ensure uniform mixing by using a stirring device (such as a blender).

[0074] During the reaction, monitoring equipment (such as gas sensors) monitors the amount and rate of methane gas production in real time. When the amount of methane gas produced reaches a certain level or the rate meets preset conditions, the extraction equipment (such as a vacuum pump) connected to the exhaust vent is activated. The extraction speed of the extraction equipment is adjusted based on the layout of the exhaust vents and the gas flow characteristics within the mine to ensure timely and effective extraction of methane gas. Extracting methane gas based on the second reaction gas prevents methane gas accumulation within the mine and avoids potential safety hazards (such as explosion risks). Timely extraction of methane gas also maintains air pressure balance within the mine, which facilitates the continuous and stable fermentation of the biodegradable slurry within the mine.

[0075] The above steps ensure appropriate microbial concentration and stable methane production rate during slurry fermentation through fermentation equation calculation, precise microbial ratio, and exhaust vent gas control, and improve the collection and utilization efficiency of methane, thereby enhancing the resource utilization value of the entire abandoned mine underground space.

[0076] Furthermore, step S3 of the embodiment of the present application includes:

[0077] Step S31: Determine a stage control sequence based on the mine utilization plan.

[0078] Step S32: According to the stage control sequence, component parameter control conversion is performed to determine the equipment parameter control sequence.

[0079] Step S33: performing mine utilization management and control in response to the mine utilization plan according to the equipment parameter control sequence.

[0080] Specifically, a stage control sequence is a sequential arrangement of stage-by-stage controls based on a mine utilization plan. It clearly defines the order of operations and key control points required at each stage of the mine utilization process. A detailed analysis of the mine utilization plan is conducted to determine the tasks and objectives for each stage. For example, there are waste disposal, gas collection, and resource recovery. Based on the results of the plan analysis, the entire utilization process is divided into multiple stages, each with clear start and end conditions. Specific control parameters and operational steps are then defined for each stage, forming a stage control sequence. For example, in one mine utilization plan, the following stage control sequence was defined: Stage 1: Waste Injection, controlling the grouting volume and rate; Stage 2: Fermentation, controlling temperature and anaerobic conditions; Stage 3: Gas Collection, controlling the gas extraction volume and rate from the vents. By defining a stage control sequence, a complex mine utilization plan can be broken down into actionable stages, each with clear control objectives and operational steps, improving the controllability and efficiency of the entire utilization process.

[0081] Extract the control parameters of each stage from the stage control sequence, such as grouting volume, grouting speed, temperature, etc. Match the control parameters with the corresponding equipment to determine which equipment needs to participate in the control of each stage. Based on the matching results of the equipment, determine the equipment parameter control sequence, including the equipment startup sequence, operating time, control parameters, etc. For example, in the aforementioned mine utilization plan, component parameter control conversion is performed according to the stage control sequence: Stage 1: garbage injection stage, controlling the flow rate and operating time of the grouting pump; Stage 2: fermentation stage, controlling the temperature and operating time of the heating equipment; Stage 3: gas collection stage, controlling the exhaust volume and operating time of the vacuum pump.

[0082] According to the equipment parameter control sequence, the equipment is controlled in real time through an automated control system (such as a PLC or DCS). Sensors (such as flow sensors, temperature sensors, and gas sensors) are installed to monitor key parameters in the mine utilization process in real time. Based on the monitoring data, the equipment operating parameters are adjusted in real time to ensure that the mine utilization process proceeds according to the predetermined plan. For example, in the aforementioned mine utilization plan, mine utilization management and control is carried out according to the equipment parameter control sequence: the operation of the grouting pump, heating equipment, and vacuum pump is controlled according to the equipment parameter control sequence through the PLC control system; flow sensors are installed to monitor the grouting volume, temperature sensors are installed to monitor the fermentation temperature, and gas sensors are installed to monitor the gas composition and flow. Based on the monitoring data, the equipment operating parameters are adjusted in real time, such as adjusting the flow of the grouting pump, the temperature of the heating equipment, and the suction volume of the vacuum pump, to ensure the stability and safety of the entire utilization process.

[0083] Through the above steps, fully automatic management of mine resources can be achieved, human intervention can be reduced, the mine transformation process can be ensured to be stable and controllable, and operational efficiency can be improved.

[0084] Furthermore, after step S31 determines the stage control sequence, the following steps are included:

[0085] Step S31 - 1 : determining a periodic generation amount curve based on the second reaction gas for the fermentation stage of the stage control sequence.

[0086] Step S31 - 2 : traversing the periodic production amount curve to determine multiple curve nodes and a fermentation termination node, wherein the nodes are divided based on the trend of the production amount of the second reaction gas.

[0087] Step S31-3: Use the multi-curve node as the parameter adjustment node of the gas extraction component, and use the fermentation termination node as the waste processing node.

[0088] Specifically, because the fermentation process can be affected by various factors, gas production exhibits periodic variations. During the fermentation phase, methane sensors installed in the mine continuously monitor the production of the second reactant gas (methane). The sensors must possess high precision and stability, accurately measuring gas production at different times. The collected gas production data is collated along with the corresponding time data. A data acquisition system (such as a PLC data acquisition module) can be used to collect and transmit sensor data to a computer system. Using data analysis software (such as Excel or specialized data analysis tools like Origin), a curve is plotted with time on the horizontal axis and gas production on the vertical axis to generate a periodic production curve for the second reactant gas. Determining this periodic production curve helps to intuitively understand the production patterns of the second reactant gas during the fermentation phase, providing important guidance for subsequent node division, parameter adjustment of the gas extraction components, and waste disposal.

[0089] Multiple curve nodes are distinct points on the periodic production curve, identified based on the production trend of the second reactant gas (e.g., a sudden change in growth rate, a shift from increasing to decreasing, or a shift from decreasing to increasing). These points reflect different state changes during the fermentation process. The fermentation termination node is also a unique point identified based on the production trend of the second reactant gas. This point marks the end of the fermentation phase, after which waste disposal and other operations are required. To analyze the periodic production curve, mathematical analysis methods, such as derivatives, can be used to determine the slope of the curve and thus determine the production trend. When a significant change in the slope of the production is observed, such as a change from positive to negative (indicating a shift from increasing to decreasing production) or a sudden increase or decrease in the slope, the corresponding point is marked as a curve node. Continuing to analyze the curve, when the production of the second reactant gas approaches a stable and low level (indicating that the fermentation reaction has essentially ceased), this point is marked as the fermentation termination node. By determining multiple curve nodes and fermentation termination nodes, the fermentation stage can be further subdivided, providing clear time nodes and status basis for precise parameter adjustment of the exhaust component and accurate start of waste treatment.

[0090] The pumping component's parameter adjustment nodes are key points for adjusting its control parameters and correspond to the multi-curve nodes identified above. When a multi-curve node is reached, the pumping component's parameters are adjusted according to pre-defined rules within the pumping component's control system (e.g., a PLC control system). For example, if a multi-curve node indicates an accelerated fermentation reaction, the pumping speed of the pumping component needs to be increased accordingly to prevent the accumulation of the second reactant gas within the mine. The fermentation termination node is defined as a waste treatment node, a process node for waste utilization. When fermentation reaches the termination node (i.e., when the gas extracted from the exhaust vents is insufficient for purification and power generation), the waste treatment process is initiated to clean and reuse the treated waste. Specifically, the majority of the waste residue in the underground space is extracted for use in organic fertilizer production. By using multi-curve nodes as the pumping component's parameter adjustment nodes, pumping parameters can be adjusted promptly, improving the efficiency and safety of gas collection. Using the fermentation termination node as the waste treatment node can timely clean up and reuse the treated waste, avoid potential problems caused by the long-term residence of fermentation waste in the mine (such as environmental pollution, space occupation, etc.), and improve the resource utilization and environmental benefits of the entire utilization process.

[0091] Through these steps, dynamic regulation of the fermentation phase can be achieved during mine renovation and utilization. Periodic generation curve monitoring provides real-time visibility into gas production, with multiple curve nodes serving as key reference points for control adjustments. This ensures that extraction components and waste handling operate smoothly according to pre-defined strategies, minimizing human intervention and ensuring the safety and stability of all operations within the mine.

[0092] Furthermore, step S33 includes:

[0093] Step S331: constructing a connecting pipeline to connect the air extraction component with the gas-generating unit, and connecting the purification component to the connecting pipeline.

[0094] Step S332: the second reaction gas enters the connecting pipeline, is purified by the purification component, and is transported to the gas-to-electric unit for secondary utilization.

[0095] Specifically, the connecting pipeline is a piping system used to connect the extraction assembly, purification assembly, and gas-to-generator unit. Its function is to provide a transmission channel for gas, ensuring that the gas can flow smoothly from the extraction assembly to the gas-to-generator unit and be processed by the purification assembly along the way. The extraction assembly is a combination of equipment, such as a vacuum pump, used to extract the second reaction gas (methane gas) from the mine. The gas-to-generator unit is a combination of equipment that uses gas as an energy source for power generation. The gas-to-generator unit uses the purified second reaction gas for combustion or other energy conversion processes to generate electricity. The purification assembly is a device or combination of equipment located in the connecting pipeline. Its function is to purify the second reaction gas extracted from the mine, removing impurities (such as moisture and carbon dioxide) and improving the gas's purity for better utilization by the gas-to-generator unit.

[0096] Select the appropriate connecting piping material and diameter based on the location and interface specifications of the extraction component, purification component, and gas-generator unit. For example, if the distance is short and the gas pressure requirement is low, plastic piping can be used; if the distance is long and requires higher pressure, metal piping is required. Then, assemble the connecting piping using fittings (such as elbows, tees, flanges, etc.) and connection tools (such as pipe wrenches, welding equipment, etc.). During assembly, ensure that the pipe connections are tight and leak-free. Next, connect the outlet of the extraction component to the inlet of the connecting piping, and the inlet of the gas-generator unit to the outlet of the connecting piping. Also, correctly install the purification component in the appropriate location on the connecting piping.

[0097] After the second reactant gas enters the connecting pipeline, it flows toward the purification component due to its own pressure (provided by the exhaust assembly) or auxiliary conveying equipment installed in the connecting pipeline (such as a gas pump). Within the purification component, different purification methods are employed depending on the properties of the gas to be purified and the type of impurities. For example, desiccant adsorption or condensation can be used to remove moisture, while chemical absorbents (such as amines) can be used to remove carbon dioxide. This improves the purity of the purified gas. The purified gas continues to be transported through the connecting pipeline, ultimately reaching the gas-to-generator unit. Within the gas-to-generator unit, depending on the unit type (e.g., internal combustion engine or gas turbine), the gas undergoes combustion or other energy conversion processes to generate electricity. During this process, the unit's control system adjusts parameters such as gas flow rate and pressure to ensure stable power generation.

[0098] By building connecting pipelines and connecting the gas extraction components, purification components and gas-fired power units, a complete gas transmission and utilization system was constructed, allowing the second reaction gas to be extracted from the mine and utilized by the gas-fired power unit after purification, realizing the effective recovery and secondary utilization of the gas, improving resource utilization efficiency, and also helping to reduce greenhouse gas emissions and improve environmental benefits.

[0099] In summary, the multi-stage treatment method for utilizing the underground space of abandoned mines provided by the embodiments of the present application has the following beneficial effects:

[0100] The embodiments of the present application solve the problem of low utilization of underground space in abandoned mines through mine layout optimization and transformation, two-stage decision optimization, full-cycle automatic control and resource recycling. By intelligently optimizing the spatial structure, the mine is adapted to the needs of efficient utilization, and combined with anaerobic degradation technology, material processing is carried out in a closed environment to achieve stability and safety in space reuse. In addition, the automatic control system ensures precise management of the entire process, improves resource conversion efficiency, and ultimately achieves efficient development of underground space in abandoned mines, promotes sustainable urban development, and at the same time provides clean energy and improves overall environmental benefits.

[0101] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-stage treatment method utilizing the underground space of abandoned mines, characterized in that: The method comprises: Performing transformation on the target mine area and determining the transformation area. The transformation methods include deploying injection holes and exhaust holes based on the mine layout structure and curtain grouting. The mine transformation strategy is determined by two-order decision-making and optimization based on low-dimensional simulation of necessary layout characteristics. A decision is made on the reuse of the transformed mine area, and a mine utilization plan is formulated, wherein a portion of the mine is used as a waste disposal area, and the mine utilization plan includes sorting and crushing degradable waste - adding anaerobic microorganisms - injecting materials into the wells - and exhausting the materials; For the modified mine area, additional injection components and air extraction components are installed to implement full-cycle automatic control based on the mine utilization plan; The transformation of the target mine area includes: Interactive mine layout structure, which determines the mine simulation layout by screening necessary layout features for low-dimensional simulation; Based on the simulated mine layout, a first-order transformation decision is made for spatial segmentation and reconstruction, and a second-order transformation decision is made for the placement of injection holes and exhaust holes to determine the mine transformation strategy; Make first-order transformation decisions for spatial segmentation and reconstruction, including: Guided by mine utilization needs, determine spatial constraints; Performing spatial segmentation determination on the mine layout structure according to the spatial constraint conditions; If yes, based on the spatial constraints, a three-dimensional segmentation decision is made for the simulated mine layout, and a segmentation and reconstruction strategy is determined; Make second-order modification decisions for the placement of injection holes and exhaust holes, including: The initial hole deployment strategy is determined with the number of holes as the first variable, the relative positions of the holes as the second variable, and the geometric characteristics of the holes as the third variable; Taking the segmentation and reconstruction strategy as a starting condition, and targeting the initial hole deployment strategy, performing injection pile simulation and airflow circulation simulation to determine a first utilization degree; The first utilization is used to measure the effective utilization of the injection holes and exhaust holes for the mine space under the initial hole deployment strategy; The variable iteration mode is set, the initial hole deployment strategy is adjusted and simulated and the utilization analysis is performed, and the optimization comparison is performed in combination with the first utilization. Multiple rounds of iterations are performed to determine the optimal hole deployment strategy.

2. A multi-stage treatment method for utilizing underground space of abandoned mines as claimed in claim 1, characterized in that: The mine transformation strategy includes a segmentation and reconstruction strategy and a hole deployment strategy. The target mine area is first transformed using the hole deployment strategy, and the second transformation is performed using the segmentation and reconstruction strategy to determine the transformed mine area. The first transformation is a drilling transformation above the mine, and the second transformation is a curtain grouting transformation. The curtain grouting transformation includes the mine wall-segmentation position-hole wall.

3. The multi-stage treatment method for utilizing underground space of abandoned mines according to claim 1, characterized in that: The mine utilization plan includes the following steps: sorting and crushing degradable waste, adding anaerobic microorganisms, injecting materials into the wells, and discharging and exhausting the materials. Identify degradable waste through pre-sorting; By controlling the crushing equipment, the degradable garbage is crushed and pulped to determine the degradable slurry; Adding anaerobic microorganisms and adding them to the degradable slurry in a proportioned manner to determine a pretreated slurry; The pre-treated slurry is controlled to be injected into the reformed mine area from an injection port at a preset grouting volume and a preset grouting speed, wherein the injection port includes at least one.

4. A multi-stage treatment method for utilizing underground space of abandoned mines as claimed in claim 3, characterized in that: Before the degradable slurry is mixed and added, the process includes: Obtaining a fermentation equation, and determining a first ratio and a second reaction gas, wherein the first ratio is a mixing ratio of anaerobic microorganisms and degradable slurry, and the second reaction gas is methane gas, with a production amount indicated; According to the first ratio, adding the anaerobic microorganisms to the degradable slurry; According to the second reaction gas, gas extraction is performed through the exhaust hole.

5. The multi-stage treatment method for utilizing underground space of abandoned mines according to claim 4, characterized in that: Execute full-cycle automatic control based on the mine utilization plan, including: determining a phase control sequence based on the mine utilization plan; According to the stage control sequence, component parameter control conversion is performed to determine the equipment parameter control sequence; According to the equipment parameter control sequence, mine utilization management and control are performed in response to the mine utilization plan.

6. The multi-stage treatment method for utilizing underground space of abandoned mines according to claim 5, characterized in that: After determining the stage control sequence, including: determining a periodic generation amount curve based on the second reaction gas for the fermentation stage of the stage control sequence; Traversing the periodic production amount curve to determine multiple curve nodes and a fermentation termination node, wherein the nodes are divided based on the trend of the production amount of the second reaction gas; The multi-curve node is used as the parameter adjustment node of the gas extraction component, and the fermentation termination node is used as the waste processing node.

7. The multi-stage treatment method for utilizing underground space of abandoned mines according to claim 6, characterized in that: Performing mine utilization management and control in response to the mine utilization plan includes: Building a connecting pipeline to connect the air extraction component with the gas generator unit, and connecting the purification component to the connecting pipeline; The second reaction gas enters the connecting pipeline, is purified by the purification component, and is transported to the gas-to-electric unit for secondary utilization.

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