A method for green mining of coal resources

Abstract

The present invention relates to the field of coal mining technology, and in particular to a method for green mining of coal resources, which will change the current situation of stagnation of green mining of coal resources technology in my country for more than 20 years, and ultimately fundamentally promote the development of green mining of coal resources technology in my country. The method specifically includes: on one side of the panel area, taking the same coal seam as a unit, arranging the total air intake belt lane and the total return air lane of the mining area, and arranging multiple coal mining working faces in the same coal seam of the panel area; at the same time, arranging a coal seam return air lane along the boundary of the coal seam in the panel area, connected with the coal mining working face in mining, forming a complete mining system. The present invention, through the innovation of coal mining technology, changes the backward arrangement of mining area lanes in the process of coal mining, so that each coal mining working face forms two air intake lanes, and the lanes left along the goaf of the coal mining working face are in a ventilated environment, and ultimately creates fundamental conditions for coal mining enterprises to promote green mining of coal resources technology.

Description

Technical Field

[0001] The present invention relates to the field of coal mining technology, and in particular to a method for green mining of coal resources, which will change the current situation of stagnation of green mining of coal resources technology in my country for more than 20 years, and ultimately fundamentally promote the development of green mining of coal resources technology in my country. Background Art

[0002] From the perspective of mining plans, mining area design, tunnel layout, system construction, etc., the mining technology of my country's current coal mining enterprises can be divided into two categories: traditional mining technology (also known as "121" mining technology) and "110" coal mining technology. The "110" coal mining technology currently implemented by a small number of coal mining enterprises in my country is the most advanced mining technology developed in my country's coal industry in the past 10 years.

[0003] 1. Traditional mining technology currently prevalent in my country's coal mining enterprises

[0004] The current situation of traditional mining technology prevailing in coal mining enterprises in my country:

[0005] From the perspective of mining plans, mining area design, tunnel layout, system construction, etc., most coal mining companies in my country still use traditional mining technology. The traditional mining technology currently prevalent in my country's coal mining companies is also called "121" mining technology. The characteristics of traditional mining technology are:

[0006] 1. After completing the construction of the underground production system of the coal mine, horizontal division and mining area design are carried out according to the underground coal seam occurrence conditions. Then, according to the requirements of horizontal division and mining area design, tunnel layout is carried out to form a production system.

[0007] 2. On the basis of completing horizontal division, mining area design, tunnel layout, production system and other tasks, arrange the coal mining working face within each mining area according to the design requirements.

[0008] 3. When arranging the coal mining faces within each mining area according to the design requirements, each coal mining face must be arranged with three tunnels, a return air tunnel, a cutting eye, and a transportation tunnel.

[0009] 4. If there are more than two coal mining faces arranged within a mining area of ​​the same coal seam, a safety coal pillar of more than 10 meters must be left between the two coal mining faces as required.

[0010] 5. If the same coal seam is mined in multiple mining areas, a 20- to 40-meter safety coal pillar must be left between the two mining areas as required.

[0011] 6. If multi-level mining is implemented in the same coal seam, a 20- to 40-meter safety coal pillar must be left above and below each horizontal tunnel as required.

[0012] 7. The meaning of "121" mining technology is: the first "1" means a coal mining face. "2" means two tunnels, one for air intake and one for return air. The other "1" means that a safety coal pillar must be left for each coal mining face.

[0013] The disadvantages of the traditional mining technology currently prevalent in my country's coal mining enterprises are:

[0014] 1. The traditional mining technology currently prevailing in my country's coal mining enterprises requires a return air tunnel and a transport tunnel for each coal mining face. There are many tunnels and the tunnel engineering volume is large, which makes it difficult for coal mining enterprises to obtain the maximum economic benefits and is not conducive to the long-term development of coal mines.

[0015] 2. The traditional mining technology currently prevailing in my country's coal mining enterprises requires a return air tunnel and a transport tunnel to be arranged at each coal mining face. There are many tunnels and the engineering workload is large. It is impossible to reduce the 10,000-ton mining ratio of coal mining enterprises, which easily leads to the problem of tight mining succession in coal mining enterprises.

[0016] 3. The traditional mining technology currently prevalent in my country's coal mining enterprises has restricted the development of green mining of coal resources by coal mining enterprises. All coal mining enterprises that implement traditional mining technology have no way to achieve green mining of coal resources. All coal mining enterprises that implement traditional mining technology have no way to meet the requirements of water conservation mining technology, subsidence reduction mining technology, waste reduction technology, and coal and gas co-mining technology for green mining of coal resources.

[0017] 4. The traditional mining technology currently prevalent in my country's coal mining enterprises requires that if more than two coal mining faces are arranged in the same coal seam and the same mining area, a safety coal pillar of more than 10 meters must be left between the two coal mining faces.

[0018] If the same coal seam is mined in multiple mining areas, a 20 to 40 meter safety coal pillar must be left between the two mining areas as required.

[0019] If multi-level mining is implemented in the same coal seam, safety coal pillars of 20 to 40 meters must be left above and below each horizontal tunnel as required.

[0020] If more coal mining faces are arranged in the same coal seam, more mining areas are arranged in the same coal seam, and more levels are arranged in the same coal seam, more safety coal pillars must be left as required, and the coal mining enterprises will lose more coal resources. It will become increasingly difficult for coal mining enterprises to operate safely, making it even more difficult for coal mining enterprises that are already in difficulties.

[0021] 2. The most advanced "110" coal mining technology in my country's coal mining enterprises

[0022] The most advanced "110" coal mining technology in my country's coal mining enterprises:

[0023] From the perspective of the mining plan, mining area design, tunnel layout, system construction and other aspects of my country's current coal mining enterprises, the "110" coal mining technology is the most advanced coal mining technology formed by my country's current coal mining enterprises in the past 10 years. The "110" coal mining technology was proposed by Academician He Manchao in 2019 and is currently the most advanced coal mining technology in my country's coal mining industry. The "110" coal mining technology means that each coal mining face only needs to arrange one return air tunnel and achieve "0" coal pillar mining. The characteristics of the "110" coal mining technology are:

[0024] 1. After completing the construction of the underground production system of the coal mine, horizontal division and mining area design are carried out according to the underground coal seam occurrence conditions. Then, according to the requirements of horizontal division and mining area design, tunnel layout is carried out to form a production system.

[0025] 2. On the basis of completing horizontal division, mining area design, tunnel layout, production system and other tasks, arrange the coal mining working face within each mining area according to the design requirements.

[0026] 3. When arranging the coal mining faces within each mining area according to the design requirements, except for the first coal mining face, each coal mining face has a return air tunnel, which can achieve "0" coal pillar mining.

[0027] The shortcomings of the most advanced "110" coal mining technology currently used by coal mining enterprises in my country are:

[0028] 1. The most advanced "110" coal mining technology currently used by coal mining enterprises in my country requires that each return air tunnel arranged at a coal mining face must be left along the goaf during the advancement of the coal mining face. As the coal mining face continues to advance, the tunnels left along the goaf are located inside the goaf and cannot be maintained on a daily basis. After the mining of the coal mining face is completed, it is difficult to maintain the tunnels left along the goaf and the amount of work required is large. From the perspective of the layout of mining tunnels, maximum optimization has not been achieved, the amount of tunnel work has not been reduced to the greatest extent, and coal mining enterprises have not yet achieved the maximum economic benefits. In other words, although the "110" coal mining technology is the most advanced coal mining technology currently used by coal mining enterprises in my country, it still has technical defects and is still not the most advanced technology.

[0029] 2. The most advanced "110" coal mining technology in my country's coal mining enterprises currently has a roadway left along the goaf in the goaf area during the mining process of each coal mining face, which cannot be maintained on a daily basis. After the mining of the coal mining face is completed, it is difficult to maintain the roadway left along the goaf, and the amount of work is large. Relatively speaking, it still does not reduce the 10,000-ton mining ratio of coal mining enterprises to the maximum extent, and it still does not completely solve the problem of tight mining and excavation succession in coal mining enterprises.

[0030] 3. Although the most advanced "110" coal mining technology of my country's coal mining enterprises is advanced to a certain extent, it is still far from the requirements of my country's green coal resource mining policy and the requirements of developing coal resources with the greatest benefits and protecting the environment to the greatest extent advocated by my country at this stage. It has not played a positive role in promoting the new requirements of mining coal resources that are compatible with the maximization of economic and social benefits of coal mining enterprises advocated by China at this stage, the new requirements of the development of mining technology in my country's coal industry, the new requirements of my country's coal industry development policy, and the new requirements of the inevitable trend of my country's coal industry development.

[0031] From the perspective of the development requirement of green mining of coal resources, the "110" coal mining technology has never been able to create conditions for the effective implementation of various technologies for green mining of coal resources, such as water-saving mining technology, subsidence reduction mining technology, gangue emission reduction technology, and coal and gas co-mining technology.

[0032] 4. The most advanced "110" coal resource mining technology currently used by coal mining enterprises in my country cannot be maintained in time because the tunnels set aside along the direction of the coal mining face are located in the goaf and there is no ventilation system. As a result, the tunnels set aside along the direction of the coal mining face cannot be used normally, which often leads to the failure of the application of the most advanced "110" coal resource mining technology currently used by coal mining enterprises in my country. This is also the fundamental reason why the "110" coal resource mining technology cannot be rapidly and comprehensively promoted.

[0033] As early as 2003, Academician Qian Minggao proposed the green mining technology of coal resources in my country. The purpose was to fundamentally promote the maximum efficiency of coal resources development and environmental protection in the production process of my country's underground coal mines, so as to maximize the economic benefits of coal mining enterprises and adapt to the maximization of the overall social benefits. However, after Academician Qian Minggao proposed the green mining technology of coal resources in 2003, it was only recognized by experts and scholars in my country's coal industry, and it only opened up a new direction for the development of my country's coal industry. From 2003 when Academician Qian Minggao proposed the green mining technology of coal resources to the present, more than 20 years have passed, and my country's green mining technology of coal resources has always remained in the state of being recognized by experts and scholars in my country's coal industry, and has always remained in the state of proposing new requirements for the development of mining technology in my country's coal industry and new requirements for the development policy of my country's coal industry. More than 20 years have passed since Academician Qian Minggao proposed the green mining technology of coal resources in 2003. However, my country's green mining technology of coal resources has never made a fundamental breakthrough, has never formed practical technology that is compatible with the underground production of coal mining enterprises, and has never fundamentally formed practical green mining technology of coal resources that can promote the development of underground production of coal mining enterprises. Summary of the invention

[0034] The purpose of the present invention is to provide a method for green mining of coal resources, which can solve the above technical problems.

[0035] The present invention provides a method for green mining of coal resources. On one side of a panel area, a total air intake belt lane and a total return air lane of the mining area are arranged with the same coal seam as a unit. Multiple coal mining working faces are arranged in the same coal seam of the panel area. At the same time, a coal seam return air lane is arranged along the boundary of the coal seam in the panel area and connected to the coal mining working face in mining to form a complete mining system.

[0036] Preferably, the upper through groove of the working face in mining becomes the lower through groove of the next working face after the working face is mined, so that each coal mining working face forms two air intake lanes.

[0037] Preferably, the return air roadway moves with the movement of the mining face and always remains connected, so that the roadway left along the goaf of the coal mining face is in a ventilated environment, ultimately creating fundamental conditions for coal mining enterprises to promote green coal resource mining technology.

[0038] Preferably, the upper through groove of the working surface adopts pre-splitting directional cutting to cut the top and retain the lane along the goaf.

[0039] Preferably, the roof support is carried out during the process of top cutting and gob retaining by pre-splitting directional cutting to form a tunnel, which is used as the lower channel of the next working face.

[0040] Preferably, during the process of top cutting and gob-side tunnel retention, roof support is carried out by shotcreting and grouting.

[0041] Preferably, during the process of top cutting and gob-side tunnel retention, roof support is carried out by anchor spraying and anchor rods.

[0042] Preferably, coal gangue is filled into the goaf during the mining process.

[0043] Preferably, a coal mining working air door is provided at one end of the main return air lane of the mining area which is connected to the lower through groove.

[0044] Preferably, a coal mining working air door is provided at one end of the upper through trough which is connected to the main air intake belt lane of the mining area.

[0045] Beneficial effects:

[0046] The present invention innovates the technology of mining coal resources. In the process of mining coal resources in coal mines, the backward layout of mining area tunnels is changed, so that each coal mining face forms two air intake tunnels, and the goaf of the coal mining face is in a ventilated environment. It provides construction space for my country's coal mining enterprises to promote green mining of coal resources, such as water-saving mining technology, subsidence reduction mining technology, gangue reduction technology, technology to increase the utilization of coal mining enterprises' own gangue, coal and gas co-mining technology, and underground gasification technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0048] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0049] Figure 2-4 It is a schematic diagram of different forms of arrangement schemes in the "11-120+X" green mining method of coal resources of the present invention;

[0050] Figure 5-6 This is a schematic diagram of different layout schemes for the "11-110+X" green coal resource mining method.

[0051] Explanation of the accompanying drawings: 1-main air inlet belt lane of the mining area, 2-main return air lane of the mining area, 301-lower through slot, 302-upper through slot, 4-first coal mining working face, 5-return air opening of the mining area, 6-return air lane of the mining area, 7-coal mining working air door, 8-fresh air flow, 9-return air flow of the coal mining working face, 10-return air lane. DETAILED DESCRIPTION

[0052] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than 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 are within the scope of protection of the present invention.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0054] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] Example 1

[0056] A method for green mining of coal resources, such as Figure 1As shown, a general belt lane 1 for air inlet of the mining area and a general return air lane 2 for the mining area are set on one side of the panel area, and a plurality of coal mining working faces are set in the panel area. The upper through groove 302 and the lower through groove 301 of the working face in mining (the first coal mining working face 4) are both connected to the general belt lane 1 for air inlet of the mining area. The mining face of the working face in mining connects the lower through groove and the upper through groove through the return air lane 10, and connects the return air lane 6 of the mining area by setting the return air opening 5 of the mining area. The return air opening is a key engineering part in the layout of the mine ventilation system and the return mining lane. In short, it is a lane opening constructed at a specific position to form a return air channel for the coal mining working face. In the process of coal mining, fresh air enters the coal mining working face from the air inlet lane. After heat exchange and gas exchange with coal and other materials, the polluted air needs to flow into the return air lane through the return air opening, thereby completing the ventilation cycle. The return air lane 6 of the mining area is connected to the general return air lane 2 of the mining area. The upper channel of the working face in mining will become the lower channel of the next working face after the working face is mined. Figure 1 The flow directions of the fresh air flow 8 and the return air flow 9 of the coal mining face can be referred to. The return air tunnel 10 moves with the movement of the mining face and always remains connected. During the mining process, coal gangue is filled into the goaf. The upper channel of the working face adopts pre-splitting directional cutting to cut the top and leave the goaf. During the process of cutting the top and leaving the goaf with pre-splitting directional cutting, the roof is supported to form a tunnel, which is used as the lower channel of the next working face. During the process of cutting the top and leaving the goaf, anchor spraying and anchor rods are used for roof support. The pressure of the roof rock layer and part of the roof rock mass are used to realize automatic tunneling and pillar-free mining. In addition, please refer to the different forms of layout. Figure 2-4 .

[0057] The present invention is called the "11-120+X" green mining method for coal resources. In "11-120+X", "11" means: "11" means that when using the 11-120+X coal mining enterprise patented technical solution for green mining of coal resources to mine coal seams, a return air lane is arranged for each layer of coal. In "11-120+X", "120" means: when using the 11-120+X coal mining enterprise patented technical solution for green mining of coal resources to mine coal seams, for each mineable coal seam within the mining range of the mine, in the process of mining design and mining construction, in addition to arranging a return air lane, two air intake lanes are arranged for each piece of coal. "0" means to achieve "0" coal pillar mining and realize coal pillar-free mining.

[0058] In "11-120+X", "X" means: "X" refers to mining multiple coal mining faces when using the 11-120+X coal mining enterprise's patented technology plan for green mining of coal resources to mine coal seams. For one layer of coal, one return air lane is arranged, and for each coal mining face, two intake air lanes are arranged, and finally "0" coal pillar mining of multiple coal mining faces is achieved. "X" means that in the coal layer being mined, "X" coal mining faces are arranged, and multiple coal mining faces are arranged.

[0059] "11-120+X" means: when using the 11-120+X coal mining enterprise's patented technology plan for green mining of coal resources to mine coal seams, a return air lane is arranged for each coal layer mined, and two air intake lanes are arranged for each coal mining face, ultimately achieving "0" coal pillar mining of multiple coal mining faces. Simply put, "11-120+X" means: one layer of coal, one return air lane, one coal mining face, two air intake lanes, ultimately achieving "0" coal pillar, mining "X" coal mining faces, and mining multiple coal mining faces. If mining "three soft" coal mines or coal mines with high mining pressure, it is recommended to form a "11-120+X" tunnel layout system between the upper and lower coal mining faces to reduce tunnel maintenance work and tunnel maintenance costs.

[0060] Advantages of the technical solution of the present invention:

[0061] (1) After coal mining enterprises promote the use of the 11-120+X patented technology for green mining of coal resources, in the process of organizing underground mining of coal resources, coal mining enterprises will be able to optimize the layout of underground tunnels to the maximum extent, minimize the amount of underground tunnel engineering, minimize material consumption, effectively reduce the production costs of coal mining enterprises, and ultimately improve the economic benefits of coal mining enterprises.

[0062] (2) After coal mining enterprises promote the use of the 11-120+X patented technology for green mining of coal resources, they will fundamentally solve the fundamental problem of high mining ratio per 10,000 tons and tight mining succession in coal mining enterprises, and realize a dynamic natural balance of mining in the production process of coal mining enterprises.

[0063] (3) After coal mining enterprises promoted the use of the 11-120+X patented technology for green mining of coal resources, the underground production systems of coal mining enterprises were optimized, the amount of underground tunnel engineering was greatly reduced, the 10,000-ton mining ratio was greatly reduced, the mining-excavation relationship achieved a dynamic natural balance, and the fundamental problem of the tension in mining-excavation succession was fundamentally solved, and the employment of coal mining enterprises was greatly reduced.

[0064] (4) After coal mining enterprises promote the use of the 11-120+X patented technology for green coal mining, the problem of the traditional mining technology currently prevalent in my country's coal mining enterprises being that too many safety coal pillars must be left, and coal mining enterprises are losing more coal resources, making safe production and operation of coal mining enterprises increasingly difficult, will be solved.

[0065] (5) After enterprises promote the use of the 11-120+X patented technology for green coal mining by coal mining enterprises, the problem of the current most advanced "110" coal resource mining technology in actual application of coal mines by coal mining enterprises in my country is solved. Since the tunnels left along the direction of the coal mining face are located in the goaf and no ventilation system is formed, it is impossible to timely maintain the tunnels left along the direction of the coal mining face. Finally, the tunnels left along the direction of the coal mining face cannot be used normally, which often leads to the failure of the application of the most advanced "110" coal resource mining technology by coal mining enterprises in my country, resulting in the fundamental problem that the "110" coal resource mining technology cannot be promoted quickly and comprehensively.

[0066] (6) After coal mining enterprises promote the use of the 11-120+X patented technology for green mining of coal resources, my country's coal mining enterprises will achieve substantial breakthroughs in the technology of green mining of coal resources, and the technical bottlenecks encountered by my country's coal mining enterprises in the process of promoting green mining of coal resources will be fundamentally solved. The mining theory and technical framework for green mining of coal resources by coal mining enterprises proposed by Academician Qian Minggao in 2003 will be supported by practical mining theory and technology. The theoretical technology of green mining of coal resources by my country's coal mining enterprises has not achieved substantial development, which will create fundamental conditions for my country's coal mining enterprises to achieve green mining of coal resources.

[0067] (7) Providing underground construction space for my country's coal mining enterprises to implement green mining of coal resources, such as water-saving mining technology, subsidence reduction mining technology, waste rock reduction technology, and coal and gas co-mining technology.

[0068] Figure 5-6The display is the patented technical scheme for green mining of coal resources of 11-110+X coal mining enterprises, which is a simplification, optimization, and upgrade of the patented technical scheme for green mining of coal resources of 11-120+X coal mining enterprises. All coal mines that can promote and apply the patented technical scheme for green mining of coal resources of 11-110+X coal mining enterprises can promote and apply the patented technical scheme for green mining of coal resources of 11-120+X coal mining enterprises. Only when the coal seam occurrence conditions are particularly good, the coal seam roof conditions are particularly good, and the coal mine production conditions are particularly good, and it is suitable for promoting and applying the patented technical scheme for green mining of coal resources of 11-120+X coal mining enterprises, can the patented technical scheme for green mining of coal resources of 11-110+X coal mining enterprises be promoted and used preferentially. The patented technical scheme for green mining of coal resources of 11-120+X coal mining enterprises is applicable to all types of coal mines. The patented technical scheme for green mining of coal resources of 11-110+X coal mining enterprises is only applicable to coal mines with good production conditions.

[0069] 11-110+X The core technical content of the patented technology solution for green mining of coal resources for coal mining enterprises:

[0070] (1) In “11-110+X”, “11” means: “11” means that when coal seams are mined using the 11-110+X coal mining enterprise’s patented technology for green mining of coal resources, a return air tunnel is arranged for each coal layer.

[0071] (2) In "11-110+X", "110" means: when using the 11-110+X coal mining enterprise's patented technology plan for green mining of coal resources to mine coal seams, for each mineable coal seam within the mining range of the mine, in the mining design and mining construction process, in addition to arranging a return air lane, only one intake air lane is arranged for each coal mining block. "0" means to achieve "0" coal pillar mining, that is, to achieve coal pillar-free mining.

[0072] (3) In "11-110+X", "X" means: "X" refers to the mining of multiple coal mining faces when using the 11-110+X coal mining enterprise's patented technology plan for green mining of coal resources to mine coal seams. For one layer of coal, one return air lane is arranged, and for each coal mining face, only one intake air lane is arranged, and finally "0" coal pillar mining of multiple coal mining faces is achieved. "X" means that in the coal layer being mined, "X" coal mining faces are arranged, and multiple coal mining faces are arranged.

[0073] (4) "11-110+X" means: when using the 11-110+X coal mining enterprise's patented technology plan for green mining of coal resources to mine coal seams, a return air lane is arranged for each coal layer to be mined, and an intake air lane is arranged for each coal mining face, ultimately achieving "0" coal pillar mining of multiple coal mining faces. Simply put, "11-110+X" means: one coal layer, one return air lane, one coal mining face, one intake air lane, ultimately achieving "0" coal pillar, mining "X" coal mining faces, and mining multiple coal mining faces.

[0074] The 11-110+X coal mining enterprise's patented technology plan for green coal resource mining is fundamentally different from the "110" coal mining enterprise's technology plan for mining coal resources and are two technology plans of different natures.

[0075] 5. Advantages of the patented technology solution for green mining of coal resources for 11-110+X coal mining enterprises:

[0076] (1) After coal mining enterprises promote the use of the 11-110+X patented technology for green mining of coal resources, they will be able to optimize the layout of underground tunnels, minimize the amount of underground tunnel engineering, minimize material consumption, effectively reduce the production costs of coal mining enterprises, and ultimately improve the economic benefits of coal mining enterprises in the process of organizing underground mining of coal resources.

[0077] (2) After coal mining enterprises promote the use of the 11-110+X patented technology for green mining of coal resources, they will fundamentally solve the fundamental problem of high mining ratio per 10,000 tons and tight mining succession in coal mining enterprises, and realize a dynamic natural balance of mining in the production process of coal mining enterprises.

[0078] (3) After coal mining enterprises promoted the use of the 11-110+X patented technology for green coal mining, the underground production systems of coal mining enterprises were optimized, the underground tunnel engineering volume was greatly reduced, the 10,000-ton mining ratio was greatly reduced, the mining-excavation relationship achieved a dynamic natural balance, and the fundamental problem of the tension in mining-excavation succession was fundamentally solved, and the employment of coal mining enterprises was greatly reduced.

[0079] (4) After coal mining enterprises promote the use of the 11-110+X patented technology for green coal mining, the problem of the traditional mining technology currently prevalent in my country's coal mining enterprises being that too many safety coal pillars must be left, and coal mining enterprises are losing more coal resources, making safe production and operation of coal mining enterprises increasingly difficult, will be solved.

[0080] (5) After enterprises promote the use of the 11-110+X patented technology for green coal mining by coal mining enterprises, the problem of the current most advanced "110" coal resource mining technology in actual application of coal mines by coal mining enterprises in my country is solved. Since the tunnels left along the direction of coal mining face advancement are located in the goaf and no ventilation system is formed, it is impossible to timely maintain the tunnels left along the direction of coal mining face advancement. Finally, the tunnels left along the direction of coal mining face advancement cannot be used normally, which often leads to the failure of the application of the most advanced "110" coal resource mining technology by coal mining enterprises in my country, resulting in the fundamental problem that the "110" coal resource mining technology cannot be promoted rapidly and comprehensively.

[0081] (6) After coal mining enterprises promote the use of the 11-110+X patented technology for green mining of coal resources, my country's coal mining enterprises will achieve substantial breakthroughs in the technology of green mining of coal resources, and the technical bottlenecks encountered by my country's coal mining enterprises in the process of promoting green mining of coal resources will be fundamentally solved. The mining theory and technical framework for green mining of coal resources by coal mining enterprises proposed by Academician Qian Minggao in 2003 will be supported by practical mining theory and technology. The theoretical technology of green mining of coal resources by my country's coal mining enterprises has not achieved substantial development, which will create fundamental conditions for my country's coal mining enterprises to achieve green mining of coal resources.

[0082] (7) Providing underground construction space for my country's coal mining enterprises to implement green mining of coal resources, such as water-saving mining technology, subsidence reduction mining technology, waste rock reduction technology, and coal and gas co-mining technology.

[0083] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for green mining of coal resources, characterized in that: On one side of the panel area, the same coal seam is taken as a unit to arrange the total air intake belt lane and the total return air lane of the mining area. Multiple coal mining faces are arranged in the same coal seam of the panel area. At the same time, a coal seam return air lane is arranged along the boundary of the coal seam in the panel area and connected to the coal mining face in mining to form a complete mining system.

2. The method for green mining of coal resources according to claim 1, characterized in that: The upper channel of the working face in mining will become the lower channel of the next working face after the working face is mined, so that each coal mining working face will form two air intake channels.

3. The method for green mining of coal resources according to claim 1, characterized in that: The return air roadway moves with the movement of the mining face and always keeps in a connected state, so that the roadway left along the goaf of the coal mining working face is in a ventilated environment.

4. The method for green mining of coal resources according to claim 2, characterized in that: The upper through groove of the working face adopts pre-splitting directional cutting to cut the top and retain the lane along the goaf.

5. The method for green mining of coal resources according to claim 4, characterized in that: The roof is supported during the process of top cutting and gob retaining by pre-splitting directional cutting to form a tunnel, which is used as the lower channel of the next working face.

6. The method for green mining of coal resources according to claim 5, characterized in that: In the process of top cutting and gob retaining, top plate support is carried out by shotcrete and grouting.

7. The method for green mining of coal resources according to claim 5, characterized in that: In the process of top cutting and gob retaining, roof support is carried out by anchor spraying and anchor rods.

8. The method for green mining of coal resources according to claim 4, characterized in that: During the mining process, coal gangue is filled into the goaf.

9. The method for green mining of coal resources according to claim 2, characterized in that: A coal mining working air door is arranged at one end of the main return air lane of the mining area which is connected to the lower through slot.

10. The method for green mining of coal resources according to claim 2, characterized in that: A coal mining working air door is arranged at one end of the upper through trough which is connected to the main air inlet belt lane of the mining area.

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