A method for continuous mining and subsequent filling mining of deep ore body masonry structure

Abstract

The invention discloses a method for continuous mining and subsequent filling of deep ore bodies with masonry structures, which is divided into ore blocks along the strike direction, and the ore blocks are divided into square masonry structure stopes, and pillars are left between the ore blocks. A ore block transport beltway and a stope transport beltway are arranged at the lower part of the ore blocks, and an ore block connecting road and a stope connecting road are arranged at the upper part of the ore blocks. The stopes are mined in the order from the lower plate to the upper plate, that is, the stopes in the strip near the lower plate are mined first, and then the stopes in the strip near the upper plate are mined. The stopes in the same strip are mined backward from the side away from the ore block transport beltway to the side of the ore block transport beltway, and the stopes in the corresponding strips on both sides of the same time column are mined and filled alternately. The invention can effectively overcome the adverse effects of deep high ground stress and high ground temperature on mining operations, and has the advantages of low carbon and environmental protection, safe mining operations, high mechanization of stope operations, low labor intensity of manual operations, and large production capacity of the stope.

Description

Technical Field

[0001] The present invention belongs to the technical field of mining, and specifically relates to a deep ore body masonry structure continuous mining and subsequent filling mining method, which is particularly suitable for the recovery of steeply inclined and thick ore bodies under deep "three highs" conditions. Background Art

[0002] The earth's crust contains a large amount of valuable mineral resources. Decades of continuous large-scale resource exploitation have led to the exhaustion of shallow mineral resources in my country. In the future, my country's mineral resource development will fully enter the deep ore deposits within the second depth space (1000-2000m), and deep mining of metal mines will become the norm. According to incomplete statistics, there are more than 100 metal mines with a mining depth of more than 1,000 meters in foreign countries, distributed in South Africa, Canada, Australia, the European Union and other countries and regions, and the world's deepest mining depths in production are mainly distributed in South Africa and Canada, of which 7 of the top 10 are in South Africa and 2 in Canada. South Africa, Canada, India, the United States and Russia are the countries with the largest metal mining depths in the world. The mining depth of most of their gold mines exceeds 2,000m. For example, the mining depth of the Mponeng gold mine in South Africa has now exceeded 4,000m (2.5 miles), and the ore body is buried at a depth of more than 7,500m; the development depth of the LaRonde polymetallic mine in Canada has reached 3,008m, and the ore body extends to 3,700m; the famous American polymetallic mine Lucky Friday with rock burst tendency has recently completed a 2,920m vertical shaft development project. Although the mining depth of China's metal mines is relatively shallow compared with many deep metal mines abroad, a large number of metal mines are in the stage of full advancement to the deep. According to statistics and forecasts, during the "13th Five-Year Plan" period in my country, nearly 50 metal mines will enter the scope of 1,000m or more mining depth, and nearly half of them will reach a mining depth of 1,500m or more in the next 10 to 20 years. For example, Hongtoushan Copper Mine, Xiangxi Gold Mine, Jiapigou Gold Mine, Dongguashan Copper Mine, Fankou Lead-Zinc Mine, Linglong Gold Mine, Huize Lead-Zinc Mine, Chengchao Iron Mine, etc. have basically entered or are about to enter the 1000-2000m deep mining range, among which Liaoning Hongtoushan Copper Mine reaches 1300m, Jilin Jiapigou Gold Mine reaches 1400m, and Henan Lingbao Fuxin Gold Mine reaches 1600m. Recently, a large gold deposit with a metal reserve of 400t was discovered at a depth of 1600-2000m in the Xiling mining area of ​​Sanshandao Gold Mine, which pointed out the direction for my country to find larger-scale gold deposits in similar mining areas in the deep part of Jiaodong Peninsula. At the same time, according to statistics, the deepest mines in the world (above 2000m) are mainly precious metal mines such as gold, silver, and platinum.

[0003] Mines entering deep mining environments inevitably face severe challenges brought by the "three highs" (high geostress, high geotemperature, and high well depth). First, they will face the problem of high geostress. If mining technology and processes that are suitable for high-stress environments are not adopted, large engineering disasters will inevitably occur, which will also seriously inhibit the large-scale production of mines, and thus have a serious impact on the development of my country's resource economy. A large amount of literature shows that many metal mines have encountered dynamic disasters such as high-energy rock bursts and mine tremors, large-scale goaf instability, roof falls and spalling in deep mining, and it is difficult to accurately predict and effectively prevent and control them. Secondly, the temperature of the rock layer increases at a rate of (10-40)℃ / km with depth. The high temperature environment conditions in deep wells seriously affect the labor productivity of workers, and in order to effectively cool down, the mining cost will inevitably increase greatly. Thirdly, with the increase in mining depth, the lifting height of ore and various materials increases significantly, which greatly increases the lifting cost and poses a threat to safe production. This shows that the current mining theory and technology have lagged behind the practical activities of human deep-earth engineering, and it is difficult to provide effective and scientific guidance, which urgently needs to be explored and developed. If these technical problems cannot be solved well, they will not only bring many hidden dangers to the safe production of many mines in my country that are about to enter deep mining, but also seriously restrict the efficiency and benefits of deep-earth resource mining.

[0004] Therefore, in the situation where deep resource mining has become the norm, it is urgent to think about and study the following difficult problems: After entering the deep, especially under the conditions of deep burial of the ore deposit, high rock temperature, strong rock burst tendency and high mining intensity, how to achieve safe, economical, efficient and clean production? At present, traditional shallow mining methods and processes are no longer fully applicable to the mining of deep ore bodies. In response to the above-mentioned technical difficulties in deep mining, the present invention discloses a deep ore body masonry structure continuous mining and subsequent filling mining method, which can effectively overcome the adverse effects of high ground stress and high ground temperature on mining operations in the deep, and realize safe, efficient and economical recovery of deep ore bodies. Summary of the invention

[0005] In view of the above problems existing in the existing gently inclined ore body mining, the present invention discloses a deep ore body masonry structure continuous mining and subsequent filling mining method, which comprises the following steps:

[0006] (1) Layout of ore blocks and stopes: the ore body is divided into ore blocks along the strike, the blocks are divided into strips along the strike, the strips are divided into square masonry stopes, and pillars are left between the ore blocks;

[0007] (2) Layout and construction of mining projects. Layout and construction of mining projects. From the middle section of the middle transport lane of this middle section, a block transport belt road is horizontally constructed in the pillars to the boundary of the upper wall of the ore body. From the block transport belt road, a stope transport belt road is constructed along the strike direction to connect the stopes on the same belt in the strike direction; in the middle section of the upper middle section, a block connecting road is horizontally constructed in the pillars. From the block connecting road, a stope connecting road is constructed along the strike direction to connect the stopes on the same belt in the strike direction. The blocks on both sides of the pillars share a block transport belt road and a block connecting road. The ends of the block transport belt road and the block connecting road are connected through a pedestrian ventilation skylight. The block transport belt road is connected to the ore chute;

[0008] (3) Mining and backfilling of ore blocks. The mining area is mined in the order from the lower wall to the upper wall, that is, the mining area in the strip near the lower wall is mined first, and then the mining area in the strip near the upper wall is mined. The mining areas in the same strip are mined backward from the side away from the ore block transport beltway to the side of the ore block transport beltway. The mining areas in the corresponding strips on both sides of the same time column are mined and backfilled alternately. When the mining area is mined, the entire section of the mining area connecting road within the mining area is expanded to form an upper working chamber. A raise drilling rig is used to construct a cutting shaft at the center of the upper working chamber to connect with the mining area transport beltway at the bottom of the mining area. A down-the-hole drill is used to construct around the cutting shaft. Downward to the medium-deep hole, install a ore-discharging funnel at the bottom of the cutting shaft, install a conveyor belt in the mine conveyor belt road and the ore block conveyor belt road, the receiving end of the conveyor belt is located at the lower part of the ore-discharging funnel in the mining area, and the discharging end of the conveyor belt is located at the ore chute. Then, detonators and explosives are loaded downward into the medium-deep hole in the upper working chamber of the mining area, and the ore is dropped by micro-difference segmented blasting. The collapsed ore is lowered to the conveyor belt through the ore-discharging funnel and transported to the ore chute through the conveyor belt. After the blasting of the mining area is completed, a filling retaining wall is built at the end of the mining area conveyor belt road and the mining area connecting road, and the mining area is filled. This cycle is repeated until all the mining and filling of the mining area in the ore block is completed.

[0009] Preferably, the length of the ore block is 50 to 60 m, the width is the thickness of the ore body, the plane size of the stope is 6 m×6 m to 10 m×10 m, and the width of the pillar is 8 to 10 m.

[0010] Furthermore, the ore discharge funnel, the conveyor belt and the lower ore discharge equipment of the ore chute adopt intelligent linkage closed-loop control, and are opened and closed at the same time when the ore is discharged from the mining area.

[0011] Furthermore, the bottom of the downward medium-deep hole is arranged in an inverted cone shape with the bottom of the cutting shaft as the center, and the bottom of the hole gradually rises from the inside to the outside, forming a conical funnel bottom structure at the lower part of the mining area after blasting.

[0012] Furthermore, when the stope is filled, a filling body with a ash-sand ratio of ≥1:8 is used for filling.

[0013] Preferably, the bottom of the downward medium-depth hole is arranged in an inverted cone shape, and the inclination angle of the cone slope is 50° to 55°.

[0014] Beneficial Effects

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) It can effectively overcome the adverse effects of high ground stress in deep areas and ensure the safety of mining operations and the stability of the stope structure. After deep mining, the ground stress will increase significantly, and the traditional stope layout and structural parameters are no longer applicable. The new deep stope layout and structural parameters provided in the present invention can effectively avoid the problems of instability of the stope structure and frequent rock bursts under deep high ground stress conditions through the stope layout of square masonry structure and the selection of stope structural parameters of small cross-section, thereby ensuring the safety of mining operations.

[0017] (2) The mine operation has a high degree of mechanization, the labor intensity of manual work is low, the mine production capacity is large, and the efficiency is high. The mine mining and cutting operations in the mine are all carried out with highly mechanized mining equipment. The raise boring machine is used to construct the cutting shaft, the down-the-hole drilling trolley is used to construct the downward medium-deep hole, and the bottom ore discharge funnel is linked with the conveyor belt to discharge the ore. The mine has a high degree of mechanization, and the continuity of each operation process and link is good. The mine production capacity is large and the efficiency is high. At the same time, it is also conducive to the realization of remote unmanned or intelligent mining.

[0018] (3) Good ventilation conditions and working environment for underground operations. Belt transport is directly used at the bottom of the mining area to unload the ore, avoiding the use of the currently commonly used scraper to unload the ore. The scraper unloading of the ore will generate a large amount of heat, dust or toxic and harmful exhaust gas underground. The high ground temperature conditions in deep mining will further deteriorate the underground ventilation and mining conditions. The belt transport unloading method used in the present invention generates heat, which is also of great significance for improving the deep underground working environment.

[0019] (4) The present invention uses tailings to fill the underground goaf, which can effectively control the movement and deformation of the overlying rock strata, avoid large-scale collapse of the surface, and protect surface farmland, villages and structures. At the same time, the use of belt transport to transport the mine out of the mine can effectively reduce the emission of greenhouse gases such as carbon dioxide when the shovel loader is unloading the mine, which also has certain beneficial effects on my country's realization of the "30 / 60" dual carbon target.

[0020] The technical solution of the present invention is further described in detail below through the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a front view of a deep ore body masonry structure continuous mining and subsequent filling mining method in an embodiment.

[0022] Figure 2 It is a sectional view along line AA of the main view of a method for continuous mining and subsequent backfilling of a deep ore body masonry structure in an embodiment.

[0023] Figure 3 It is a BB line cross-sectional view of the main view of a deep ore body masonry structure continuous mining and subsequent filling mining method in an embodiment.

[0024] Figure 4 It is a CC line sectional view of the main view of a deep ore body masonry structure continuous mining and subsequent filling mining method in an embodiment.

[0025] Numbers in the figure: 1-pillar, 2-ore block transport beltway, 3-mine field transport beltway, 4-ore block connecting road, 5-mine field connecting road, 6-pedestrian ventilation shaft, 7-ore chute, 8-upper working chamber, 9-cutting shaft, 10-downward medium and deep hole, 11-ore discharge funnel, 12-transport belt, 13-filling body. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions of various embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only 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 making creative work are within the scope of protection of the present invention.

[0027] Embodiment 1:

[0028] See also Figure 1-Figure 4 The deep ore body masonry structure continuous mining and subsequent filling mining method shown in the figure is a preferred solution of the present invention. The technical solution provided by the present invention includes the following steps:

[0029] (1) Layout of ore blocks and mining areas: The ore body is divided into ore blocks along the strike. The length of the ore block is 50m and the width is the thickness of the ore body. The ore blocks are divided into strips along the strike. The strips are divided into mining areas with square masonry structures. The plane size of the mining area is 8m×8m. A pillar 1 is left between the ore blocks. The width of the pillar 1 is 8m.

[0030] (2) Layout and construction of mining engineering. Layout and construction of mining engineering. From the middle section of the middle transport tunnel of this middle section, a block transport belt road 2 is horizontally constructed in the intermediate pillar 1 to the upper wall boundary of the ore body. From the block transport belt road 2, a mining field transport belt road 3 is constructed along the strike direction to connect the mining fields on the same belt in the strike direction; in the middle section of the upper middle section, a block connecting road 4 is horizontally constructed in the intermediate pillar 1. From the block connecting road 4, a mining field connecting road 5 is constructed along the strike direction to connect the mining fields on the same belt in the strike direction. The ore blocks on both sides of the intermediate pillar 1 share a block transport belt road 2 and a block connecting road 4. The ends of the block transport belt road 2 and the block connecting road 4 are connected through a pedestrian ventilation skylight 6. The block transport belt road 2 is connected to the ore chute 7.

[0031] (3) Mining and filling of ore blocks. The stopes are mined in the order from the lower wall to the upper wall, that is, the stopes in the strip near the lower wall are mined first, and then the stopes in the strip near the upper wall. The stopes in the same strip are mined backward from the side away from the ore block transport beltway 2 to the side of the ore block transport beltway 2. At the same time, the stopes in the corresponding strips on both sides of column 1 are mined and filled alternately. Figure 2 and Figure 3As shown, the mining areas in the ore block are divided into strip 1, strip 2 and strip 3. Strip 1 is divided into 1-1 mining area, 1-2 mining area, 1-3 mining area, 1-4 mining area, 1-5 mining area, 1-6 mining area, 1-7 mining area, 1-8 mining area, 1-9 mining area and 1-10 mining area. Strip 2 is divided into 2-1 mining area, 2-2 mining area, 2-3 mining area, 2-4 mining area, 2-5 mining area, 2-6 mining area, 2-7 mining area, 2-8 mining area, 2-9 mining area and 2-10 mining area. Strip 3 is divided into 3-1 mining area, 3-2 mining area, 3-3 mining area, 3-4 mining area, 3-5 mining area, 3-6 mining area, 3-7 mining area, 3-8 mining area 8 mine, 3-9 mine and 3-10 mine. The overall mining order of the mines is 1-1 mine, 1-2 mine, 1-3 mine, 1-4 mine, 1-5 mine, 1-6 mine, 1-7 mine, 1-8 mine, 1-9 mine, 1-10 mine, 2-1 mine, 2-2 mine, 2-3 mine, 2-4 mine, 2-5 mine, 2-6 mine, 2-7 mine, 2-8 mine, 2-9 mine, 2-10 mine, 3-1 mine, 3-2 mine, 3-3 mine, 3-4 mine, 3-5 mine, 3-6 mine, 3-7 mine, 3-8 mine, 3-9 mine and 3-10 mine. When the mining area is mined, the entire section of the mining area connecting road 5 within the mining area is first expanded to form an upper working chamber 8. A reverse drilling rig is used to construct a cutting shaft 9 at the center of the upper working chamber 8 to connect it with the mining area transportation belt road 3 at the bottom of the mining area. A down-the-hole drilling rig is used to construct a downward medium-deep hole 10 around the cutting shaft 9. The bottom of the downward medium-deep hole 10 is arranged in an inverted cone shape with the bottom of the cutting shaft 9 as the center. The inclination angle of the cone slope is 55°, and the bottom of the hole gradually rises from the inside to the outside. After blasting, a conical funnel bottom structure is formed at the lower part of the mining area. A ore discharge hopper 11 is installed at the bottom of the cutting shaft 9, and a conveyor belt 12 is installed in the mining field conveyor belt road 3 and the ore block conveyor belt road 2. The receiving end of the conveyor belt 12 is located at the lower part of the ore discharge hopper 11 of the recovery mining field, and the discharging end of the conveyor belt 12 is located at the ore chute 7. The ore discharge hopper 11, the conveyor belt 12 and the lower ore discharge equipment of the ore chute 7 adopt intelligent linkage closed-loop control, and are opened and closed at the same time when the mining field is discharged. Then, detonator explosives are loaded downward into the medium-deep hole 10 in the upper working chamber 8 of the mining area, and the ore is dropped by micro-difference segmented blasting. The collapsed ore is lowered onto the conveyor belt 12 through the ore discharge funnel 11 and transported to the ore chute 7 through the conveyor belt 12. After the mining area is blasted out, a filling retaining wall is built at the end of the mining area conveyor belt road 3 and the mining area connecting road 5, and the mining area is filled with a filling body 13 with a ash-sand ratio of 1:8. This cycle is repeated until all the mining and filling in the mining area are completed.

[0032] Embodiment 2:

[0033] See also Figure 1-Figure 4The deep ore body masonry structure continuous mining and subsequent filling mining method shown in the figure is a preferred solution of the present invention. The technical solution provided by the present invention includes the following steps:

[0034] (1) Layout of ore blocks and mining areas: The ore body is divided into ore blocks along the strike. The length of the ore block is 50m and the width is the thickness of the ore body. The ore blocks are divided into strips along the strike. The strips are divided into mining areas with square masonry structures. The plane size of the mining area is 8m×8m. A pillar 1 is left between the ore blocks. The width of the pillar 1 is 10m.

[0035] (2) Layout and construction of mining engineering. Layout and construction of mining engineering. From the middle section of the middle transport tunnel of this middle section, a block transport belt road 2 is horizontally constructed in the intermediate pillar 1 to the upper wall boundary of the ore body. From the block transport belt road 2, a mining field transport belt road 3 is constructed along the strike direction to connect the mining fields on the same belt in the strike direction; in the middle section of the upper middle section, a block connecting road 4 is horizontally constructed in the intermediate pillar 1. From the block connecting road 4, a mining field connecting road 5 is constructed along the strike direction to connect the mining fields on the same belt in the strike direction. The ore blocks on both sides of the intermediate pillar 1 share a block transport belt road and a block connecting road 4. The ends of the block transport belt road 2 and the block connecting road 4 are connected through a pedestrian ventilation skylight 6. The block transport belt road is connected to the ore chute 7.

[0036] (3) Mining and filling of ore blocks. The stopes are mined in the order from the lower wall to the upper wall, that is, the stopes in the strip near the lower wall are mined first, and then the stopes in the strip near the upper wall are mined. The stopes in the same strip are mined backward from the side away from the ore block transport beltway 2 to the side of the ore block transport beltway 2. At the same time, the stopes in the corresponding strips on both sides of the column 1 are mined and filled alternately; Figure 2 and Figure 3As shown, the mining areas in the ore block are divided into strip 1, strip 2 and strip 3. Strip 1 is divided into 1-1 mining area, 1-2 mining area, 1-3 mining area, 1-4 mining area, 1-5 mining area, 1-6 mining area, 1-7 mining area, 1-8 mining area, 1-9 mining area and 1-10 mining area. Strip 2 is divided into 2-1 mining area, 2-2 mining area, 2-3 mining area, 2-4 mining area, 2-5 mining area, 2-6 mining area, 2-7 mining area, 2-8 mining area, 2-9 mining area and 2-10 mining area. Strip 3 is divided into 3-1 mining area, 3-2 mining area, 3-3 mining area, 3-4 mining area, 3-5 mining area, 3-6 mining area, 3-7 mining area, 3-8 mining area 8 mine, 3-9 mine and 3-10 mine. The overall mining order of the mines is 1-1 mine, 1-2 mine, 1-3 mine, 1-4 mine, 1-5 mine, 1-6 mine, 1-7 mine, 1-8 mine, 1-9 mine, 1-10 mine, 2-1 mine, 2-2 mine, 2-3 mine, 2-4 mine, 2-5 mine, 2-6 mine, 2-7 mine, 2-8 mine, 2-9 mine, 2-10 mine, 3-1 mine, 3-2 mine, 3-3 mine, 3-4 mine, 3-5 mine, 3-6 mine, 3-7 mine, 3-8 mine, 3-9 mine and 3-10 mine. When the mining area is mined, the entire section of the mining area connecting road 5 within the mining area is first expanded to form an upper working chamber 8. A reverse drilling rig is used to construct a cutting shaft 9 at the center of the upper working chamber 8 to connect it with the mining area transportation belt road 3 at the bottom of the mining area. A down-the-hole drilling rig is used to construct a downward medium-deep hole 10 around the cutting shaft 9. The bottom of the downward medium-deep hole 10 is arranged in an inverted cone shape with the bottom of the cutting shaft 9 as the center. The inclination angle of the cone slope is 50°, and the bottom of the hole gradually rises from the inside to the outside. After blasting, a conical funnel bottom structure is formed at the lower part of the mining area. A ore discharge hopper 11 is installed at the bottom of the cutting shaft 9, and a conveyor belt 12 is installed in the mining field conveyor belt road 3 and the ore block conveyor belt road 2. The receiving end of the conveyor belt 12 is located at the lower part of the ore discharge hopper 11 of the recovery mining field, and the discharging end of the conveyor belt 12 is located at the ore chute 7. The ore discharge hopper 11, the conveyor belt 12 and the lower ore discharge equipment of the ore chute 7 adopt intelligent linkage closed-loop control, and are opened and closed at the same time when the mining field is discharged. Then, detonator explosives are loaded downward into the medium-deep hole 10 in the upper working chamber 8 of the mining area, and the ore is dropped by micro-difference segmented blasting. The collapsed ore is lowered onto the conveyor belt 12 through the ore discharge funnel 11 and transported to the ore chute 7 through the conveyor belt 12. After the mining area is blasted out, a filling retaining wall is built at the end of the mining area conveyor belt road 3 and the mining area connecting road 5, and the mining area is filled with a filling body 13 with a ash-sand ratio of 1:6. This cycle is repeated until all the mining and filling in the mining area are completed.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A method for continuous mining and subsequent filling in a deep ore body masonry structure, It is characterized in that The following steps are involved: (1) Layout of ore blocks and stopes: the ore body is divided into ore blocks along the strike, the blocks are divided into strips along the strike, the strips are divided into square masonry stopes, and pillars are left between the ore blocks; (2) Layout and construction of mining projects: construct a block transport beltway horizontally in the middle pillar of the middle transport lane of the middle section to the boundary of the upper wall of the ore body, and construct a stope transport beltway along the strike direction from the block transport beltway to connect the stopes on the same belt in the strike direction; construct a block connecting road horizontally in the middle pillar of the middle transport lane of the upper middle section, and construct a stope connecting road along the strike direction from the block connecting road to connect the stopes on the same belt in the strike direction. The blocks on both sides of the stope share a block transport beltway and a block connecting road. The ends of the block transport beltway and the block connecting road are connected through a pedestrian ventilation skylight, and the block transport beltway is connected to the ore chute; (3) Mining and backfilling of ore blocks. The mining area is mined in the order from the lower wall to the upper wall, that is, the mining area in the strip near the lower wall is mined first, and then the mining area in the strip near the upper wall is mined. The mining areas in the same strip are mined backward from the side away from the ore block transport beltway to the side of the ore block transport beltway. The mining areas in the corresponding strips on both sides of the same time column are mined and backfilled alternately. When the mining area is mined, the entire section of the mining area connecting road within the mining area is expanded to form an upper working chamber. A raise drilling rig is used to construct a cutting shaft at the center of the upper working chamber to connect with the mining area transport beltway at the bottom of the mining area. A down-the-hole drill is used to construct around the cutting shaft. Downward to the medium-deep hole, install a ore-discharging funnel at the bottom of the cutting shaft, install a conveyor belt in the mine conveyor belt road and the ore block conveyor belt road, the receiving end of the conveyor belt is located at the lower part of the ore-discharging funnel in the mining area, and the discharging end of the conveyor belt is located at the ore chute. Then, detonators and explosives are loaded downward into the medium-deep hole in the upper working chamber of the mining area, and the ore is dropped by micro-difference segmented blasting. The collapsed ore is lowered to the conveyor belt through the ore-discharging funnel and transported to the ore chute through the conveyor belt. After the blasting of the mining area is completed, a filling retaining wall is built at the end of the mining area conveyor belt road and the mining area connecting road, and the mining area is filled. This cycle is repeated until all the mining and filling of the mining area in the ore block is completed.

2. A deep ore body masonry structure continuous mining and subsequent filling mining method according to claim 1, Features: The length of the ore block is 50 to 60 m, the width is the thickness of the ore body, the plane size of the stope is 6 m×6 m to 10 m×10 m, and the width of the pillar is 8 to 10 m.

3. A deep ore body masonry structure continuous mining and subsequent filling mining method according to claim 1, Features: The ore discharge funnel, the conveyor belt and the lower ore discharge equipment of the ore chute adopt intelligent linkage closed-loop control, and are opened and closed at the same time when the ore is discharged from the mining area.

4. A deep ore body masonry structure continuous mining and subsequent filling mining method according to claim 1, Features: The bottom of the downward medium-deep hole is arranged in an inverted cone shape with the bottom of the cutting shaft as the center, and the bottom of the hole gradually rises from the inside to the outside, forming a conical funnel bottom structure at the lower part of the mining area after blasting.

5. A deep ore body masonry structure continuous mining and subsequent filling mining method according to claim 1, Features: When the stope is filled, a filling body with a lime-sand ratio of ≥1:8 is used for filling.

6. A deep ore body masonry structure continuous mining and subsequent filling mining method according to claim 4, Features: The bottom of the downward medium-depth hole is arranged in an inverted cone shape, and the inclination angle of the cone slope is 50° to 55°.

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