Coal mine construction method

Abstract

The invention belongs to the technical field of coal mine construction, and particularly relates to a coal mine construction method which comprises the following steps: S1, low carbon and carbon reduction: applying a green low-carbon advanced technology to promote coal mine intelligent construction and realize energy conservation and consumption reduction; s2, carbon loading: developing a new energy multi-energy complementary carbon loading technology, and promoting optimal combination of a coal mine and new energy; s3, carbon sequestration: fully exerting the advantages of coal mine area land resources to develop carbon resources, and realizing coal mine area carbon self-balance; and S4, other applications of the coal mine CO2. According to the invention, four projects of ''low carbon, carbon reduction, carbon loading and carbon sequestration'' coal mine construction are innovatively implemented, green and low-carbon upgrading of a coal mine is promoted, a clean, low-carbon, safe and efficient coal energy supply system is constructed, coal mine 5G system application is constructed and completed, and informatization and digital enabling is comprehensively promoted; and the TBM construction method, the 5G intelligent coal mine and other technologies are actively adopted, the design of a coal preparation plant is optimized, and it is ensured that the green mine standard is met.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine construction, and in particular relates to a coal mine construction method. Background Art

[0002] Coal mine construction refers to economic activities that realize the expanded reproduction of fixed assets in the coal industry, mainly including the construction and installation of fixed assets, namely the construction of buildings and structures and the installation of mechanical equipment; the purchase of fixed assets; and other construction work, such as survey and design work, land acquisition, training, large-scale temporary facilities, production preparation, trial production, etc. The scale and depth of coal mine construction are constantly increasing.

[0003] Coal mining construction has gradually begun to transform towards carbon neutrality, which means that through measures such as emission reduction and offset, the net carbon emissions of the coal mining industry will be zero or negative, thereby achieving a positive contribution to climate change. However, there are few methods for coal mining construction on the market, resulting in severe challenges in the transformation, structural adjustment and subsequent development of coal mining areas.

[0004] Therefore, in view of the above technical problems, it is necessary to provide a coal mine construction method.

[0005] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0006] The object of the present invention is to provide a coal mine construction method, which can solve the problems in the above-mentioned background technology.

[0007] In order to achieve the above object, a technical solution provided by a specific embodiment of the present invention is as follows:

[0008] A method for coal mine construction comprises the following steps:

[0009] S1. Low carbon and carbon reduction: Use green and low-carbon advanced technologies to promote intelligent construction of coal mines and achieve energy conservation and consumption reduction;

[0010] S2. Negative carbon: Develop new energy multi-energy complementary negative carbon technology and promote the optimal combination of coal mines and new energy;

[0011] S3. Carbon sequestration: Give full play to the land resource advantages of coal mining areas to develop carbon resources and achieve carbon self-balance in coal mining areas;

[0012] S4. Coal Mine CO 2 Other applications.

[0013] In one or more embodiments of the present invention, the S1 specifically includes the following steps:

[0014] S101. Select and introduce advanced green and intelligent resource exploration technologies from home and abroad to realize the digitization, intelligence and transparency of the coal resource exploration process;

[0015] S102. Implement green and intelligent coal mining with TBM in inclined shafts to realize a safe and efficient new model of mechanized replacement of workers, automated reduction of workers, and intelligent excavation in coal mining;

[0016] S103, select TDS full-process and full-size intelligent coal preparation system to realize the integrated intelligent mining mode of "mining-selection-filling";

[0017] S104. Solve the problem of high salt water and coal gangue treatment in mining areas based on high salt water solidification coal gangue technology;

[0018] S105. Select the ventilation and low-concentration gas thermal storage oxidation utilization system to achieve efficient extraction and utilization of coal methane;

[0019] S106. The coal mine office is built with performance, environmental protection, healthy ecology and energy conservation as the construction concept, and is built into a comfortable, healthy and safe green and low-carbon office building.

[0020] In one or more embodiments of the present invention, in S101, the green intelligent resource exploration technology includes exploration and recovery technology, exploration engineering technology, exploration theory, exploration standard system, and exploration evaluation technology, wherein the exploration engineering technology includes remote sensing technology, geophysical exploration technology, analysis and testing technology, well logging technology, and information technology.

[0021] In one or more embodiments of the present invention, S102 also includes creating a TBM intelligent system, which includes an edge perception layer, a data transmission layer, an information fusion layer and a decision application layer. The edge perception layer is used to perceive formation and equipment information, the data transmission layer includes a TBM cloud computing platform, the TBM cloud computing platform is used to transmit and fuse edge perception layer perception information, and the decision application layer is used to make corresponding instructions.

[0022] In one or more embodiments of the present invention, the specific process flow of S104 is: designing the ratio of coal gangue and high-salt water slurry filling materials, then making gangue and high-salt water slurry on the ground, and transporting them to the underground through a large-flow, high-pressure pump, so that the gangue and high-salt water slurry are mixed and consolidated with the consolidating agent slurry. The consolidating agent is divided into two parts, material A and material B, which are respectively pumped by grouting pumps, mixed with the gangue and high-salt water slurry at the filling point underground, and solidified.

[0023] In one or more embodiments of the present invention, in S105, the exhaust air and low-concentration gas thermal storage oxidation utilization system includes two parts, the first part is the exhaust air and low-concentration extracted gas oxidation system, and the second part is waste heat utilization.

[0024] In one or more embodiments of the present invention, in S2, the new energy includes photovoltaic new energy, geothermal energy and mine water waste heat.

[0025] In one or more embodiments of the present invention, the process flow of utilizing waste heat from mine water is as follows: the liquid refrigerant in the heat pump unit absorbs low-grade thermal energy from groundwater in the evaporator, evaporates into a low-temperature, low-pressure gaseous refrigerant, is compressed by the compressor into a high-temperature, high-pressure gaseous refrigerant, and enters the condenser. The high-temperature, high-pressure gaseous refrigerant in the condenser undergoes heat exchange, transfers heat to the circulating water in the building, and then condenses into liquid and returns to the evaporator, repeating the heat absorption and heat exchange process.

[0026] In one or more embodiments of the present invention, S3 specifically includes: improving the ecological carbon sink function of coal mining areas, preventing and controlling the loss of ecological carbon sinks in coal mining areas, and managing carbon sinks in coal mining areas, wherein the improving the ecological carbon sink function of coal mining areas includes: soil carbon sink, water carbon sink and vegetation carbon sink.

[0027] In one or more embodiments of the present invention, in S4, the coal mine CO 2 Other applications include coal mining areas CO 2 Geological storage.

[0028] Compared with the existing technology, the coal mine construction method of the present invention promotes the green and low-carbon upgrade of coal mines through the innovative implementation of the four major coal mine construction projects of "low carbon, carbon reduction, negative carbon, and carbon fixation", builds a clean, low-carbon, safe and efficient coal energy supply system, and completes the construction of coal mine 5G system applications to comprehensively promote informatization and digital empowerment; promotes green coal mining, actively adopts TBM methods, 5G intelligent coal mines and other technologies, optimizes coal preparation plant design, and ensures that green mine standards are met. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 This is a structural schematic diagram of a coal mine construction method in one embodiment of the present invention;

[0031] Figure 2 A framework diagram of a green coal exploration technology in one embodiment of the present invention;

[0032] Figure 3 A system diagram of a TBM intelligent system in one embodiment of the present invention;

[0033] Figure 4 This is a technical flow chart of high-salt water solidification of coal gangue in one embodiment of the present invention;

[0034] Figure 5 This is a working principle diagram of a coal mine waste heat utilization system in one embodiment of the present invention;

[0035] Figure 6 It is a schematic diagram of a heat storage oxidation device for exhaust gas in one embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of improving ecological carbon sinks in coal mining areas in one embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0038] like Figure 1 As shown, a coal mine construction method in one embodiment of the present invention includes the following steps:

[0039] S1. Low carbon and carbon reduction: Use green and low-carbon advanced technologies to promote intelligent construction of coal mines and achieve energy conservation and consumption reduction;

[0040] S2. Negative carbon: Develop new energy multi-energy complementary negative carbon technology and promote the optimal combination of coal mines and new energy;

[0041] S3. Carbon sequestration: Give full play to the land resource advantages of coal mining areas to develop carbon resources and achieve carbon self-balance in coal mining areas;

[0042] S4. Coal Mine CO 2 Other applications.

[0043] Among them, S1 specifically includes the following steps:

[0044] S101. Select and introduce advanced green and intelligent resource exploration technologies from home and abroad to realize the digitization, intelligence and transparency of the coal resource exploration process;

[0045] S102. Implement green and intelligent coal mining with TBM in inclined shafts to realize a safe and efficient new model of mechanized replacement of workers, automated reduction of workers, and intelligent excavation in coal mining;

[0046] S103, select TDS full-process and full-size intelligent coal preparation system to realize the integrated intelligent mining mode of "mining-selection-filling";

[0047] S104. Solve the problem of high salt water and coal gangue treatment in mining areas based on high salt water solidification coal gangue technology;

[0048] S105. Select the ventilation and low-concentration gas thermal storage oxidation utilization system to achieve efficient extraction and utilization of coal methane;

[0049] S106. The coal mine office is built with performance, environmental protection, healthy ecology and energy conservation as the construction concept, and is built into a comfortable, healthy and safe green and low-carbon office building.

[0050] Green exploration refers to a new exploration model that is guided by the concept of green development and uses efficient and environmentally friendly methods, technologies, and equipment to avoid, reduce, or control the impact on the ecological environment in all aspects and throughout the entire process of geological exploration, thereby achieving the coordinated development of geological exploration and ecological environmental protection. Green exploration requires integrated theoretical innovation and the comprehensive use of multiple technologies. Figure 2 As shown, green and intelligent resource exploration technology includes exploration and recovery technology, exploration engineering technology, exploration theory, exploration standard system, and exploration evaluation technology.

[0051] Among them, exploration engineering technology includes remote sensing technology, geophysical technology, analysis and testing technology, well logging technology and information technology. Exploration and restoration technology includes solid waste treatment technology, land reclamation technology, vegetation restoration technology, mud treatment technology and sealing technology. Exploration theory includes coal formation theory, coal accumulation law, sequence stratigraphy and structural empty coal.

[0052] In addition, the exploration standard system includes industry standards, comprehensive exploration standards, technical requirements, laws and regulations, etc. The exploration evaluation technology includes regional geological results mining and evaluation, exploration technology alternative evaluation, exploration cost and benefit evaluation, exploration environmental disturbance program evaluation, exploration environmental restoration evaluation, and exploration results and green coal resource evaluation.

[0053] The main connotations of low-carbon green coal mining include: (1) treating mining and the ecological environment as a large system, and protecting and utilizing the elements that constitute the environmental ecology, such as land, rivers, groundwater, and vegetation, as resources; (2) obtaining the maximum amount of resources and economic benefits with the minimum environmental disturbance through scientific design and the use of advanced technology; (3) adopting waste-free or low-waste process technology in the mining process to minimize waste output and avoid pollution and damage to the environment and ecology.

[0054] The TBM construction method (full-face rock tunnel boring machine) is to use the roller cutter on the rotating cutterhead of the full-face tunnel boring machine to squeeze and shear the rock in a hard rock environment, pick up the slag through the bucket teeth on the rotating cutterhead, drop it into the main machine belt conveyor for backward transportation, and then transport the slag out of the tunnel by traction slag trucks or tunnel continuous belt conveyors. The TBM construction method has the following advantages: (1) The equipment is remotely operated on the ground, with one-button start and stop, to achieve inherently safe construction; (2) The customized open TBM realizes the integrated collaborative operation of exploration, excavation, support, anchoring and transportation, greatly improving the operation efficiency; (3) The intelligent and precise automatic positioning total station real-time measurement controls the tunnel excavation deviation within 10 mm, the excavation forming quality is good, and the stability of the tunnel itself is further improved.

[0055] In addition, the rock mass mechanics data, electromechanical and hydraulic data, cutter consumption data, slag image data, construction consumables data, etc. generated during TBM excavation contain rich information on rock-machine interaction. Figure 3 As shown, in S102, it also includes creating a TBM intelligent system. The TBM intelligent system includes an edge perception layer, a data transmission layer, an information fusion layer and a decision application layer. The edge perception layer is used to perceive the formation and equipment information. The data transmission layer includes a TBM cloud computing platform. The TBM cloud computing platform is used to transmit and fuse the edge perception layer perception information. The decision application layer is used to make corresponding instructions.

[0056] By utilizing big data, cloud computing platforms and the intelligent tunneling system - TBM-Smart, we can reduce manpower and improve efficiency, and gradually realize mechanized replacement of manpower, automated reduction of manpower, and intelligent tunneling. The ultimate goal is to achieve unmanned and autonomous tunneling, a new model of safe and efficient well construction with "manned safety inspections and unmanned tunneling operations."

[0057] In S103, the main devices of the TDS intelligent dry separation system include: feeding device, material distribution device, identification device, X-ray linear array detection, intelligent array air nozzle, air supply system, clean coal collection chute, gangue collection chute, electronic control system, dust removal system, etc. Its principle is: based on the Lambert-Beer law, using the difference in the X-ray mass absorption coefficient ratio of coal and rock and image recognition technology to distinguish coal and gangue, while using intelligent recognition methods, establishing corresponding analysis models for different coal quality characteristics, digitally identifying coal and gangue through big data analysis, and intelligently opening the array air gun to achieve coal-gangue separation.

[0058] In S104, the principle of high-salt water solidification coal gangue technology is to use new materials to make high-salt water and coal gangue into a paste, which is then pumped into the mine and solidified within a controllable time. The specific process flow is as follows: Figure 4As shown, the ratio of filling materials of coal gangue and high-salt water slurry is designed, and then the gangue and high-salt water slurry are made on the ground, and transported to the underground by a large-flow, high-pressure pump, so that the gangue, high-salt water slurry and consolidation agent slurry are mixed and consolidated. The consolidating agent is divided into two parts, material A and material B, which are respectively delivered by grouting pump, mixed with the gangue and high-salt water slurry at the filling point underground, and solidified.

[0059] The use of high-salt water solidification coal gangue technology not only solves the treatment problems of high-salt water and coal gangue, but also can replace the gangue filling working face and the corresponding filling system, achieving green and environmentally friendly disposal while greatly reducing investment.

[0060] In addition, the filling system is fully computer-automated, and the batching, slurry making, mixing, conveying, and grouting are all automatically controlled by the computer, which greatly improves the filling quality and efficiency and realizes a new intelligent mining model that integrates "mining-selection-filling".

[0061] In S105, the main structure of the thermal storage oxidation device is composed of an oxidation chamber, a thermal storage chamber filled with ceramics, and a switching valve. Figure 6 The ventilation and low-concentration gas thermal storage oxidation utilization system consists of two parts:

[0062] The first part is the exhaust air and low-concentration extracted gas oxidation system, that is, the exhaust air and extracted gas are safely collected and mixed to reach a methane concentration of 1.2%, and then transported to the thermal storage oxidation device. The mixed gas is instantly oxidized in a high-temperature environment of 930℃±25℃ to release oxidation heat. In addition to meeting the heat demand of the device itself, this oxidation heat will also generate a large amount of waste heat. This part of heat is drawn out from the top of the oxidation device in the form of high-temperature flue gas and enters the waste heat recovery equipment.

[0063] The second part is the waste heat utilization, that is, the high-temperature flue gas from the oxidation device is passed through the waste heat boiler to generate superheated steam, which is introduced into the steam turbine generator set to generate electricity and also provide heating.

[0064] In S106, the green and low-carbon office building uses green building materials. The advantages of green building materials are as follows: (1) In terms of raw materials, a lot of waste is used, which reduces environmental pollution and is more conducive to the development of ecology;

[0065] (2) In production, high-level technology is used to carry out pollution-free and low-energy production, and toxic and hazardous substances are purified; (3) In use, green building materials have excellent performance that is no less than that of traditional building materials, and energy consumption is also reduced during the construction process; (4) After use, green building materials can be recycled and basically do not produce waste that pollutes the environment.

[0066] In addition, green and low-carbon office buildings use clean energy for heating and power supply, such as geothermal energy and mine water, and use new energy technologies to achieve power supply and heating, and self-sufficiency, which can effectively reduce the use of coal, fossil fuels and other fuels, and reduce CO 2 The emission of greenhouse gases such as carbon dioxide can be reduced, thus achieving the effect of energy saving and environmental protection.

[0067] In S2, new energy includes photovoltaic new energy, geothermal energy and mine water waste heat.

[0068] Among them, the "heat without water" technology is a geothermal well project that does not affect groundwater resources. It obtains underground thermal energy through external carriers (softened water) and technical means, and does not require the extraction of underground hot water to obtain thermal energy, which is completely different from conventional hydrothermal geothermal wells. The non-interference geothermal coaxial heat exchange system refers to the drilling equipment drilling into the hot dry rock formation at a certain depth underground, extracting geothermal energy by installing a sealed metal heat exchange device in the borehole, using high thermal conductivity casing cementing, inserting the inner pipe of the insulation layer, and pumping cold water into the annulus to get hot water to extract heat, achieving winter heating and summer cooling. It is a new technology for the utilization of geothermal energy and an effective measure to improve the atmospheric environment and save energy.

[0069] In addition, there are two main types of utilization of low-temperature geothermal resources in mines: one is underground wind heat, that is, the utilization of tunnel wind temperature; the other is underground water heat, that is, the utilization of mine drainage water heat resources. In the process of mine development, mine water and mine return air are produced. Since the ground temperature of the mine is basically constant, the temperature of mine water and mine return air is basically constant throughout the year and is little affected by the outside temperature. It can be seen that mine water and mine return air are high-quality and stable waste heat resources.

[0070] Heat pump is a highly efficient energy-saving device that fully utilizes low-grade thermal energy. It can obtain a large amount of heat supply by consuming a small amount of reverse cycle net work, and can effectively utilize the difficult-to-use low-grade thermal energy to achieve energy saving. Compared with traditional coal-fired boilers and oil-fired boilers, it has no pollutant emissions and is completely within the scope of clean heating recommended by the state. Figure 5 As shown in the figure, the principle is: the liquid refrigerant in the heat pump unit absorbs the low-grade heat energy of groundwater in the evaporator, evaporates into low-temperature and low-pressure gaseous refrigerant, is compressed by the compressor into high-temperature and high-pressure gaseous refrigerant, and enters the condenser. The high-temperature and high-pressure gaseous refrigerant in the condenser is condensed into liquid after heat exchange, transfers heat to the building's circulating water (geothermal or heating radiator), and returns to the evaporator to repeat the heat absorption and heat exchange process.

[0071] In S3, it specifically includes: improving the ecological carbon sink function of coal mining areas, preventing and controlling the loss of ecological carbon sinks in coal mining areas, and managing carbon sinks in coal mining areas. Among them, the improvement of the ecological carbon sink function of coal mining areas includes: soil carbon sink, water carbon sink and vegetation carbon sink, that is, Figure 7 shown.

[0072] Among them, the improvement of soil carbon sink function in mining areas mainly includes three levels: total carbon content improvement, organic carbon sink improvement, and stable organic carbon sink improvement. The improvement methods can be divided into two aspects: soil treatment technology and plant treatment technology. The main measurement subjects of vegetation carbon sink in mining areas are the above-ground and underground biomass of plants and the amount of surface litter. Therefore, the improvement of vegetation carbon sink function in mining areas mainly involves taking a variety of measures to fully tap the biomass potential of vegetation in mining areas and significantly increase the above-ground and underground biomass and surface litter of ecological vegetation in mining areas.

[0073] Carbon sink loss refers to the CO2 absorbed by forest vegetation established through afforestation or reforestation activities. 2 It will be released into the atmosphere again due to human or natural reasons such as logging, deforestation, pests and diseases, meteorological disasters and geological disasters, resulting in a reversal of the carbon sink benefits of afforestation or reforestation activities.

[0074] In response to the loss of soil carbon sinks in mining areas, coal mines can take the following measures: (1) Enhance the carbon sink effect of soil improvement in mining areas. On the premise of increasing the application of organic materials, appropriately increase the application of inert and slow-release soil improvement materials, build a good soil aggregate structure and organic-inorganic complex structure, and promote the stability of the mining area's soil structure, soil nutrients, and soil carbon sink functions; (2) In the process of landform reshaping and land leveling in mining areas, take soil and water conservation engineering measures such as slope horizontal steps, intercepting drainage ditches, fish scale pits, gullies, and silt dams to prevent soil erosion, promote the growth of ecological vegetation, and produce early Good soil and water conservation effect, and strengthen the management and maintenance of subsequent soil and water conservation measures to avoid direct carbon sink removal caused by soil erosion and secondary carbon sink loss caused by affecting plant growth; (3) Take comprehensive measures to strengthen the prevention and control of spontaneous combustion of residual coal and gangue mountains in mining areas, and avoid carbon emissions from surface and shallow soil carbon pools caused by spontaneous combustion; (4) Carry out soil pollution risk assessment in mining areas in the early stage, and treat those that need to be treated at an early stage, reduce the use of soil conditioners, plant growth regulators and pesticides with pollution risks, and avoid new engineering investment and carbon sink leakage caused by new mining area soil pollution remediation projects in the later stage.

[0075] To address carbon losses during vegetation construction, measures that can be taken include: (1) strengthening the design and construction of vegetation restoration in mining areas; (2) strengthening soil improvement and fertilization work in ecological restoration areas of mining areas; (3) ensuring that seedlings are obtained and used nearby in accordance with relevant technical standards for afforestation and greening, providing sufficient suitable seedlings at close range, effectively avoiding adverse effects such as long-distance transportation of seedlings and climate differences between the original habitat and the mining area, and improving the efficiency and benefits of ecological carbon sink construction in ecologically fragile areas; and (4) strengthening carbon sink loss risk management during the construction process.

[0076] Carbon sink monitoring in coal mining areas refers to the process of obtaining the current status and changing trends of carbon sinks in soil, vegetation and other carbon pools through comprehensive observation, numerical simulation, statistical analysis and other means, serving the carbon sink management work in mining areas, and is an important support for the auxiliary accounting system. Through the research on ecological ground monitoring technology, the development of monitoring technology and equipment for biomass, plant community species composition, structure and functional changes, the research on monitoring technology for changes in land ecological types in coal mining areas, and the satellite remote sensing-assisted ground verification technology, dynamic monitoring of land use changes in coal mining areas can be achieved.

[0077] With the carbon sink baseline survey as the core, and based on the site conditions and vegetation profile of the coal mining area, a comprehensive evaluation method for coal mining area carbon sinks including mining, hydrology, geology, vegetation, soil and other factors is established to quantitatively evaluate the full-caliber and full-life cycle carbon sink situation in the coal mining area. Based on the full-process and full-factor carbon sink management platform for coal mining areas, basic ecological information of coal mining areas such as carbon sink data can be browsed, queried, entered and managed in real time, and automatic calculation of carbon reserves and related parameters can be achieved.

[0078] In S4, coal mine CO 2 Other applications include coal mining areas CO 2 Geological storage.

[0079] Coal seams as gas reservoirs are different from conventional reservoirs. They are typical dual-pore structure media with extremely developed pores (primary pores and secondary pores) and a large specific surface area. The gas retained in the coal seams is mainly stored in the pores of the coal rock. Under the action of pressure, it exists in an adsorbed state rather than in a free state. Since coal contains a large number of micropores, the specific surface area is huge, and there is unsaturated energy on the pore surface, it can interact with non-polar gas molecules (such as CO 2 ) can generate a van der Waals force between the injected CO 2 Can be adsorbed by coal seam pores to store CO 2 When CO 2 After being injected into the coal seam, it will react with CH 4 Competitive adsorption occurs, and due to its greater affinity for coal, its adsorption capacity is higher than that of CH 4 , which can effectively replace CH 4 , CH originally adsorbed in the coal seam 4 Replace it.

[0080] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0081] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for coal mine construction, characterized in that: The following steps are involved: S1. Low carbon and carbon reduction: Use green and low-carbon advanced technologies to promote intelligent construction of coal mines and achieve energy conservation and consumption reduction; S2. Negative carbon: Develop new energy multi-energy complementary negative carbon technology and promote the optimal combination of coal mines and new energy; S3. Carbon sequestration: Give full play to the land resource advantages of coal mining areas to develop carbon resources and achieve carbon self-balance in coal mining areas; S4. Other applications of CO2 in coal mines.

2. A coal mine construction method according to claim 1, characterized in that: The S1 specifically includes the following steps: S101. Select and introduce advanced green and intelligent resource exploration technologies from home and abroad to realize the digitization, intelligence and transparency of the coal resource exploration process; S102. Implement green and intelligent coal mining with TBM in inclined shafts to realize a safe and efficient new model of mechanized replacement of workers, automated reduction of workers, and intelligent excavation in coal mining; S103, select TDS full-process and full-grade intelligent coal preparation system to realize the integrated intelligent mining mode of "mining-selection-filling"; S104. Solve the problem of high salt water and coal gangue treatment in mining areas based on high salt water solidification coal gangue technology; S105. Select the ventilation and low-concentration gas thermal storage oxidation utilization system to achieve efficient extraction and utilization of coal methane; S106. The coal mine office is built with performance, environmental protection, healthy ecology and energy conservation as the construction concept, and is built into a comfortable, healthy and safe green and low-carbon office building.

3. A coal mine construction method according to claim 2, characterized in that: In S101, the green and intelligent resource exploration technology includes exploration and recovery technology, exploration engineering technology, exploration theory, exploration standard system, and exploration evaluation technology, wherein the exploration engineering technology includes remote sensing technology, geophysical exploration technology, analysis and testing technology, well logging technology, and information technology.

4. A coal mine construction method according to claim 2, characterized in that: In the S102, it also includes creating a TBM intelligent system, which includes an edge perception layer, a data transmission layer, an information fusion layer and a decision application layer. The edge perception layer is used to perceive the formation and equipment information. The data transmission layer includes a TBM cloud computing platform. The TBM cloud computing platform is used to transmit and fuse the edge perception layer perception information. The decision application layer is used to make corresponding instructions.

5. A coal mine construction method according to claim 2, characterized in that: The specific process flow of S104 is: designing the ratio of coal gangue and high-salt water slurry filling materials, then making gangue and high-salt water slurry on the ground, and transporting them to the underground through a large-flow, high-pressure pump, so that the gangue and high-salt water slurry are mixed and consolidated with the consolidating agent slurry. The consolidating agent is divided into two parts, material A and material B, which are respectively pumped by grouting pumps, mixed with the gangue and high-salt water slurry at the filling point underground, and solidified.

6. A coal mine construction method according to claim 2, characterized in that: In S105, the exhaust air and low-concentration gas thermal storage oxidation utilization system includes two parts, the first part is the exhaust air and low-concentration extracted gas oxidation system, and the second part is waste heat utilization.

7. A coal mine construction method according to claim 1, characterized in that: In S2, the new energy includes photovoltaic new energy, geothermal energy and mine water waste heat.

8. A coal mine construction method according to claim 7, characterized in that: The process flow of utilizing waste heat from mine water is as follows: the liquid refrigerant in the heat pump unit absorbs low-grade thermal energy from groundwater in the evaporator, evaporates into low-temperature, low-pressure gaseous refrigerant, is compressed by the compressor into high-temperature, high-pressure gaseous refrigerant, and enters the condenser. The high-temperature, high-pressure gaseous refrigerant in the condenser exchanges heat, transfers heat to the circulating water in the building, and then condenses into liquid, returns to the evaporator, and repeats the heat absorption and heat exchange process.

9. A coal mine construction method according to claim 1, characterized in that: In the S3, it specifically includes: improving the ecological carbon sink function of coal mining areas, preventing and controlling the loss of ecological carbon sinks in coal mining areas, and managing carbon sinks in coal mining areas, wherein the improved ecological carbon sink function of coal mining areas includes: soil carbon sink, water carbon sink and vegetation carbon sink.

10. A coal mine construction method according to claim 1, characterized in that: In S4, other applications of the coal mine CO2 include geological storage of CO2 in coal mine areas.

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