Green low-carbon mining area construction method

Abstract

The invention belongs to the technical field of coal mine construction, and particularly relates to a green low-carbon mining area construction method, which comprises the following steps: S1, coal resource exploration aspect: taking a green development concept as guidance, applying a green intelligent exploration technology and equipment, and creating a digital platform of a coal resource exploration process; s2, in the aspect of coal mining, the main inclined shaft and the auxiliary inclined shaft are constructed through a TBM construction method, and a TBM cloud service platform is developed; s3, in the aspect of coal washing selection, an underground TDS intelligent separation system is established and linked with underground filling, and a new intelligent mining mode integrating mining, selection and filling is achieved; and S4, in the aspect of waste reduction, the high-salt-water coal gangue solidification technology is combined with filling mining. Starting from coal development and utilization, by surrounding the dual goals of supply guarantee and low-carbon construction, the method breaks through the key core technology of accurate supply guarantee of coal and'carbon reduction and low carbon 'for development and mining-transportation-washing selection, and realizes carbon emission reduction in the whole process of coal mining-transportation-washing selection.

Description

Technical Field

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

[0002] Mine construction refers to various construction projects carried out in the mining area, including mining facilities, processing facilities, industrial equipment, office facilities, etc. Mine construction is crucial to the development of mining areas and economic development, involving many aspects such as planning and design, safety and environmental protection, and economic benefits.

[0003] With the proposal of the "dual carbon" goal, mining area construction has gradually begun to transform towards a green and low-carbon direction. Green and low-carbon mining area construction refers to the use of sustainable development concepts and modern environmental protection technology in the process of mine construction and operation to achieve the goals of mine ecological environment protection, energy conservation and emission reduction, and resource recycling. It mainly includes ecological environment protection, energy conservation and emission reduction, resource recycling, and scientific management. However, there is a lack of guidance methods for green and low-carbon mining area construction on the market, resulting in severe challenges in the transformation, structural adjustment, and subsequent sustainable development of coal mining areas.

[0004] Therefore, in response to the above technical problems, it is necessary to provide a green and low-carbon mining area 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 purpose of the present invention is to provide a green and low-carbon mining area construction method, which can solve the above-mentioned background problems.

[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 green and low-carbon mining area construction method comprises the following steps:

[0009] S1. Coal resource exploration: Guided by the concept of green development, use green and intelligent exploration technology and equipment to create a digital platform for the coal resource exploration process;

[0010] S2. Coal mining: The main and auxiliary inclined shafts are constructed using TBM method, and a TBM cloud service platform is developed;

[0011] S3. Coal washing: Establish an underground TDS intelligent sorting system and link it with underground filling to realize a new intelligent mining model integrating "mining-selection-filling";

[0012] S4. Waste reduction: high-salt water solidification of coal gangue technology combined with backfill mining;

[0013] S5. Emission reduction: Adopt the ventilation and low-concentration gas thermal storage oxidation utilization system to achieve efficient extraction and utilization of coal methane;

[0014] S6. Other aspects: Construction of green buildings.

[0015] In one or more embodiments of the present invention, in S1, the green intelligent exploration technology includes exploration recovery technology, exploration engineering technology, exploration theory, exploration standard system, and exploration evaluation technology.

[0016] In one or more embodiments of the present invention, the survey engineering technology includes remote sensing technology, geophysical exploration technology, analysis and testing technology, well logging technology, information technology, fast and accurate drilling technology, high-precision geophysical exploration technology, geological big data and ecological geological protection and restoration technology; the survey and restoration technology includes solid waste treatment technology, land reclamation technology, vegetation restoration technology, mud treatment technology and sealing technology.

[0017] In one or more embodiments of the present invention, in S1, the digital platform is used to display data of each stage of exploration, and the data includes static data, dynamic modeling data, dynamic data, three-dimensional visualization data and real-time data.

[0018] In one or more embodiments of the present invention, in S2, the TBM construction method is carried out in a hard rock environment, using the roller cutter on the rotating cutter disc of the full-section tunnel boring machine to squeeze and shear the rock, and the bucket teeth on the rotating cutter disc pick up the slag, which falls into the main machine belt conveyor and is transported backward, and then the slag is transported out of the tunnel by towing the slag truck or the tunnel continuous belt conveyor.

[0019] In one or more embodiments of the present invention, in S2, the TBM cloud service platform 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 geology, strata, full-section tunnel boring machine and cutterhead tool 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, the decision application layer includes an intelligent control terminal, and the intelligent control terminal is used to realize rock perception, assisted driving, intelligent guidance, intelligent support, safety evaluation and jamming warning functions.

[0020] In one or more embodiments of the present invention, in S3, the TDS intelligent sorting system includes a distribution device, an identification device, a blowing system, a plurality of collecting troughs, an electrical control system and a dust removal system, the identification device corresponds to the distribution device, and the blowing system is arranged between the distribution device and the collecting trough.

[0021] In one or more embodiments of the present invention, the distribution device is a vibrating distribution device, a belt conveyor is provided on one side of the vibrating distribution device, the identification device is a CCD camera, the CCD camera is installed on the upper side of the belt conveyor, the collecting trough is a clean coal collection chute and a gangue collection chute, the injection system includes an intelligent array air nozzle and an air source, the air source is connected to the intelligent array air nozzle, the intelligent array air nozzle is arranged at the discharge end of the belt conveyor and on the upper side of the collecting trough, the dust removal system is a dust collector, and the suction end of the dust collector is arranged at the discharge end of the vibrating distribution device and on the upper side of the collecting trough.

[0022] In one or more embodiments of the present invention, the S4 comprises the following steps:

[0023] S401. Design the proportion of coal gangue and high-salt water slurry filling materials;

[0024] S402, on the ground, first crush and screen the coal gangue sorted in S3, and then use a mixer to prepare gangue and high-salt water slurry;

[0025] S403, conveying the gangue and high-salt water slurry prepared in S402 to the underground via a conveying pump, so that the gangue, high-salt water slurry and the consolidating agent slurry are mixed and consolidated in the underground filling mining area, wherein the consolidating agent is divided into two parts, A material and B material.

[0026] In one or more embodiments of the present invention, in S5, the exhaust air and low-concentration gas thermal storage oxidation utilization system includes a thermal storage oxidation device, the thermal storage oxidation device includes an oxidation chamber, a thermal storage chamber filled with ceramics and a switching valve, the oxidation chamber is connected to the thermal storage chamber, the switching valve is installed at the bottom of the thermal storage chamber, and a waste heat recovery device is installed on one side of the thermal storage oxidation device.

[0027] Compared with the existing technology, the green and low-carbon mine construction method of the present invention starts from the development and utilization of coal itself, focuses on the dual goals of ensuring supply and low-carbon construction, breaks through the key core technologies of "carbon reduction and low carbon" in the precise supply of coal and the development of mining-transportation-washing, and realizes carbon emission reduction in the entire process of coal mining-transportation-washing. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1This is a structural schematic diagram of a green and low-carbon mining area construction method in one embodiment of the present invention;

[0030] Figure 2 A framework diagram of a green intelligent exploration technology in one embodiment of the present invention;

[0031] Figure 3 This is a schematic diagram of a digital platform process in one embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of a TBM cloud service platform in an embodiment of the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of a TDS intelligent sorting system in one embodiment of the present invention;

[0034] Figure 6 This is a technical flow chart of high-salt water solidification of coal gangue in one embodiment of the present invention;

[0035] Figure 7 Schematic diagram of a thermal storage oxidation device in one embodiment of the present invention. DETAILED DESCRIPTION

[0036] 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.

[0037] like Figures 1 to 7 As shown, a green and low-carbon mining area construction method in one embodiment of the present invention includes the following steps:

[0038] S1. Coal resource exploration: Guided by the concept of green development, use green and intelligent exploration technology and equipment to create a digital platform for the coal resource exploration process;

[0039] S2. Coal mining: The main and auxiliary inclined shafts are constructed using TBM method, and a TBM cloud service platform is developed;

[0040] S3. Coal washing: Establish an underground TDS intelligent sorting system and link it with underground filling to realize a new intelligent mining model integrating "mining-selection-filling";

[0041] S4. Waste reduction: high-salt water solidification of coal gangue technology combined with backfill mining;

[0042] S5. Emission reduction: Adopt the ventilation and low-concentration gas thermal storage oxidation utilization system to achieve efficient extraction and utilization of coal methane;

[0043] S6. Other aspects: Construction of green buildings.

[0044] like Figure 2 As shown in S1, green intelligent exploration technology includes exploration and recovery technology, exploration engineering technology, exploration theory, exploration standard system, and exploration evaluation technology.

[0045] Among them, survey engineering technology includes remote sensing technology, geophysical technology, analysis and testing technology, logging technology, information technology, fast and accurate drilling technology, high-precision geophysical exploration technology, geological big data and ecological geological protection and restoration technology. Survey and restoration technology includes solid waste treatment technology, land reclamation technology, vegetation restoration technology, mud treatment technology and sealing technology.

[0046] In addition, exploration and restoration technologies include solid waste treatment technology, land reclamation technology, vegetation restoration technology, mud treatment technology and hole sealing technology. Exploration theory includes coal formation theory, coal accumulation law, sequence stratigraphy and structural empty coal.

[0047] Specifically, the exploration standard system includes industry standards, comprehensive exploration standards, technical requirements, laws and regulations, etc. 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.

[0048] like Figure 3 As shown, the digital platform is used to display data from all aspects of exploration, including static data, dynamic modeling data, dynamic data, three-dimensional visualization data and real-time data.

[0049] Among them, static data includes ground drilling, 3D seismic and ground electromagnetic. Dynamic modeling data includes multi-attribute modeling data and dynamic grid update data. Dynamic data includes mining data, downhole geomagnetism, borehole radar, downhole drilling and slot wave detection.

[0050] In addition, 3D visualization data includes real-time drawing data and rendering enhancement data. Real-time data includes mining seismic, microseismic monitoring and electromagnetic monitoring.

[0051] By utilizing the digital platform, we can implement environmental impact minimization control throughout the exploration process, minimize disturbances to the ecological environment, and realize the digitization, intelligence, and transparency of the coal resource exploration process.

[0052] In S2, TBM construction is carried out in a hard rock environment, using the roller cutters on the rotating cutterhead of the full-section tunnel boring machine to squeeze and shear the rock, pick up the slag through the bucket teeth on the rotating cutterhead, drop it into the main machine belt conveyor and transport it backwards, and then transport the slag out of the tunnel by towing the slag truck or the tunnel continuous belt conveyor.

[0053] The TBM method has the following advantages: (1) The equipment can be remotely operated from the ground and started and stopped with one button, achieving 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 performs real-time measurement, so that the tunnel excavation deviation is controlled within 10 mm, the excavation forming quality is good, and the stability of the tunnel itself is further improved.

[0054] like Figure 4 As shown in Figure 2, in S2, the TBM cloud service platform 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 geology, strata, full-face tunnel boring machine, and cutterhead tool information. The data transmission layer includes the TBM cloud computing platform, which is used to transmit and fuse the perception information of the edge perception layer. The decision application layer includes an intelligent control terminal, which is used to realize rock mass perception, assisted driving, intelligent guidance, intelligent support, safety evaluation, and jam warning functions.

[0055] The TBM cloud service platform can be used to obtain rock mechanics data, electromechanical and hydraulic data, cutter consumption data, slag image data, construction consumables data, etc. generated during the excavation process. At the same time, it can also reasonably set excavation parameters, timely adjust the posture, complete support decisions, etc., to avoid engineering accidents such as abnormal equipment damage, landslides, and machine jams.

[0056] In S3, the TDS intelligent dry sorting machine uses the different absorption, reflection and scattering abilities of atoms of different components in coal gangue to sort raw coal at the individual level. It is suitable for sorting raw coal in the entire particle size range and can achieve a gangue coal rate of less than 3% and a gangue rate in coal of less than 3%. It has high sorting accuracy, simple and intelligent process, and requires fewer operators. It can effectively improve the utilization rate of coal, improve the quality of coal output, and reduce production costs.

[0057] like Figure 5 As shown, the TDS intelligent sorting system includes a feeding device, a distribution device, an identification device, a blowing system, a plurality of collecting tanks, an electric control system and a dust removal system. The identification device corresponds to the distribution device, and the blowing system is arranged between the distribution device and the collecting tank.

[0058] Among them, the distribution device is a vibrating distributor, and a belt conveyor is provided on one side of the vibrating distributor. The identification device is a CCD camera, and the CCD camera is installed on the upper side of the belt conveyor. The collection troughs are clean coal collection chutes and gangue collection chutes. The injection system includes an intelligent array air nozzle and an air source, and the air source is connected to the intelligent array air nozzle. The intelligent array air nozzle is arranged at the discharge end of the belt conveyor and on the upper side of the collection trough. The dust removal system is a dust collector, and the suction end of the dust collector is arranged at the discharge end of the vibrating distributor and on the upper side of the collection trough.

[0059] When washing coal, the lump raw coal is separated one by one after passing through the feeding device and the vibrating distributor, and is identified one by one by the CCD camera after passing through the belt conveyor. The identification signal is fed back to the electronic control system, and the electronic control system controls the intelligent array air nozzle according to the identification signal of the CCD camera. The identification signal is logically judged according to the pre-set program. When the gangue signal is identified, the nozzle sprays the high-pressure gas in the gas storage tank, and the gangue is entered into the gangue collection chute by the wind, thereby realizing the separation of coal and gangue.

[0060] like Figure 6 As shown, S4 includes the following steps:

[0061] S401. Design the proportion of coal gangue and high-salt water slurry filling materials;

[0062] S402, on the ground, first crush and screen the coal gangue sorted in S3, and then use a mixer to prepare gangue and high-salt water slurry;

[0063] S403, conveying the gangue and high-salt water slurry prepared in S402 to the underground via a conveying pump, so that the gangue, high-salt water slurry and consolidating agent slurry are mixed and consolidated in the underground filling mining area, wherein the consolidating agent is divided into two parts, A material and B material.

[0064] 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, thus achieving green and environmentally friendly disposal while greatly reducing investment.

[0065] 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".

[0066] like Figure 7 As shown, in S5, the exhaust air and low-concentration gas thermal storage oxidation utilization system includes a thermal storage oxidation device, and the thermal storage oxidation device includes an oxidation chamber, a thermal storage chamber filled with ceramics, and a switching valve.

[0067] Among them, the use of the ventilation air and low-concentration gas thermal storage oxidation utilization system includes two parts. The first part is the ventilation air and low-concentration extracted gas oxidation system. After the ventilation air and extracted gas are safely collected and mixed to reach a methane concentration of 1.2%, they are transported to the thermal storage oxidation device. The mixed gas is instantly oxidized in a high-temperature environment of 930℃±25℃, releasing 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 as high-temperature flue gas and enters the waste heat recovery equipment. The second part is the waste heat utilization. The high-temperature flue gas from the oxidation device generates superheated steam through the waste heat boiler, which is introduced into the steam turbine generator set to generate electricity and also provide heat.

[0068] In S6, green buildings use green building materials, such as roof panels made of expanded polystyrene crushed stone and cement, which not only have thermal insulation but also can be used as an insulation layer. The foam insulation layer is more cost-effective than the precast concrete top insulation layer.

[0069] In addition, green buildings develop and utilize potential new energy resources, 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 and other fuels, and reduce the emission of greenhouse gases such as CO2, achieving energy-saving and environmental protection effects.

[0070] 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.

[0071] 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 green and low-carbon mining area construction method, characterized in that: The following steps are involved: S1. Coal resource exploration: Guided by the concept of green development, use green and intelligent exploration technology and equipment to create a digital platform for the coal resource exploration process; S2. Coal mining: The main and auxiliary inclined shafts are constructed using TBM method, and a TBM cloud service platform is developed; S3. Coal washing: Establish an underground TDS intelligent sorting system and link it with underground filling to realize a new intelligent mining model integrating "mining-selection-filling"; S4. Waste reduction: high-salt water solidification of coal gangue technology combined with backfill mining; S5. Emission reduction: Adopt the ventilation and low-concentration gas thermal storage oxidation utilization system to achieve efficient extraction and utilization of coal methane; S6. Other aspects: Construction of green buildings.

2. A green and low-carbon mining area construction method according to claim 1, characterized in that: In S1, the green intelligent exploration technology includes exploration recovery technology, exploration engineering technology, exploration theory, exploration standard system, and exploration evaluation technology.

3. A green and low-carbon mining area construction method according to claim 2, characterized in that: The survey engineering technology includes remote sensing technology, geophysical exploration technology, analysis and testing technology, well logging technology, information technology, fast and accurate drilling technology, high-precision geophysical exploration technology, geological big data and ecological geological protection and restoration technology; the survey and restoration technology includes solid waste treatment technology, land reclamation technology, vegetation restoration technology, mud treatment technology and sealing technology.

4. A green and low-carbon mining area construction method according to claim 1, characterized in that: In S1, the digital platform is used to display data of each stage of exploration, and the data includes static data, dynamic modeling data, dynamic data, three-dimensional visualization data and real-time data.

5. A green and low-carbon mining area construction method according to claim 1, characterized in that: In S2, the TBM construction method is carried out in a hard rock environment, using the roller cutter on the rotating cutter head of the full-section tunnel boring machine to squeeze and shear the rock, and the bucket teeth on the rotating cutter head pick up the slag, which falls into the main machine belt conveyor and is transported backward, and then the slag is transported out of the tunnel by towing the slag truck or the tunnel continuous belt conveyor.

6. A green and low-carbon mining area construction method according to claim 1, characterized in that: In S2, the TBM cloud service platform 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 geology, strata, full-section tunnel boring machine and cutterhead tool 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 includes an intelligent control terminal. The intelligent control terminal is used to realize rock perception, assisted driving, intelligent guidance, intelligent support, safety evaluation and jam warning functions.

7. A green and low-carbon mining area construction method according to claim 1, characterized in that: In S3, the TDS intelligent sorting system includes a distribution device, an identification device, a blowing system, a plurality of collecting tanks, an electric control system and a dust removal system. The identification device corresponds to the distribution device, and the blowing system is arranged between the distribution device and the collecting tank.

8. A green and low-carbon mining area construction method according to claim 7, characterized in that: The distribution device is a vibrating distributor, a belt conveyor is provided on one side of the vibrating distributor, the identification device is a CCD camera, the CCD camera is installed on the upper side of the belt conveyor, the collecting troughs are clean coal collection chute and gangue collection chute, the injection system includes an intelligent array air nozzle and an air source, the air source is connected to the intelligent array air nozzle, the intelligent array air nozzle is arranged at the discharge end of the belt conveyor and on the upper side of the collecting trough, the dust removal system is a dust collector, and the suction end of the dust collector is arranged at the discharge end of the vibrating distributor and on the upper side of the collecting trough.

9. A green and low-carbon mining area construction method according to claim 8, characterized in that: The S4 comprises the following steps: S401. Design the proportion of coal gangue and high-salt water slurry filling materials; S402, on the ground, first crush and screen the coal gangue sorted in S3, and then use a mixer to prepare gangue and high-salt water slurry; S403, conveying the gangue and high-salt water slurry prepared in S402 to the underground via a conveying pump, so that the gangue, high-salt water slurry and the consolidating agent slurry are mixed and consolidated in the underground filling mining area, wherein the consolidating agent is divided into two parts, A material and B material.

10. A green and low-carbon mining area construction method according to claim 1, characterized in that: In S5, the exhaust air and low-concentration gas thermal storage oxidation utilization system includes a thermal storage oxidation device, which includes an oxidation chamber, a thermal storage chamber filled with ceramics and a switching valve. The oxidation chamber is connected to the thermal storage chamber, and the switching valve is installed at the bottom of the thermal storage chamber. A waste heat recovery device is installed on one side of the thermal storage oxidation device.

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