Layered pseudo-inclined long-drift mechanized continuous filling mining method for gently inclined medium-thickness ore body
By laying the pseudo-tilting mine house access paths in the gentle inclined medium-thick ore body, combining mechanized equipment and filling technology, the problem of low mechanized continuous mining efficiency in metal non-metal mines is solved, and efficient ore mining and equipment utilization is achieved.
Patent Information
- Application Number
- CN202510781321.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-12
- Publication Date
- 2025-07-18
AI Technical Summary
Mechanized continuous mining technology is limited in metal non-metallic mines, with short mining routes, frequent equipment transitions, and difficult organization and coordination of mining and filling, resulting in low production efficiency.
The mechanized continuous filling mining method of gently inclined medium-thick ore body layered pseudo-tilt long-progress path is adopted. By laying intraveal pseudo-tilt mining room access with different slopes between the middle sections, mechanized continuous production is achieved using equipment such as boring machines, mining machines, continuous mining machines, and other equipment. Combined with the local fan-to-operated surface ventilation and filling technology, a natural filling mold is formed.
It significantly improves the ore recovery efficiency, reduces the amount of waste rock production, reduces the mining and cutting ratio and depletion rate, and improves equipment utilization and mining intensity.
Smart Images
Figure CN120331864A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of underground mining of ore deposits, and particularly to a mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts. Background Art
[0002] Mechanized continuous mining technology is widely used in coal mines, with advantages such as low labor intensity of personnel, high production efficiency, and simple construction organization. Due to the complex occurrence of ore bodies and high hardness of ores in metal and non-metal mines, when applying mechanized continuous mining technology to traditional drift filling mining methods, there are adverse effects such as short mining drifts, frequent equipment transfer, difficult coordination of mining and filling, and low production efficiency, and the efficiency advantage of mechanized continuous mining cannot be exerted. Summary of the Invention
[0003] The purpose of the present invention is to provide a mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts. The mining method provided by the present invention can apply the upward stratified filling mining method to gently inclined medium-thick ore bodies, directly arrange pseudo-inclined ore chamber drifts with different slopes in the vein between levels for mining, the length of the drift reaches more than 200 meters, and a mechanized continuous production is realized by using roadheaders, mining roadheaders, continuous miners, and roadheader-anchoring machines, effectively increasing the mining intensity.
[0004] The solution of the present invention is as follows: A mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts, comprising the following steps: S1. Development engineering layout: According to the geological characteristics of the mining area, the ore body is divided into levels in the vertical direction, and each level is divided every 50m - 120m in the vertical direction of the ore body. A level crosscut haulage roadway and a belt conveyor roadway parallel to it are arranged; within each level, along the strike of the ore body, every 400 - 500m is divided into a stoping unit. No development ramps or sublevel roadways are arranged between levels, and the ore body between the adjacent two level crosscut haulage roadways is used as a stoping unit. The area between the adjacent two level crosscut haulage roadways refers to the ore body in the vertical direction; S2. Stoping: An ore draw roadway is arranged from the level crosscut haulage roadway in the upper level towards the ore body. An inclined long pseudo-inclined ore chamber drift is excavated from the end of the ore draw roadway along the bottom of the ore body to the lower level, forming a long pseudo-inclined ore chamber drift in the vein. Multiple stratified pseudo-inclined ore chamber drifts are arranged between the level crosscut haulage roadway in the upper level and the level crosscut haulage roadway in the lower level. According to the stoping conditions of the thickness distribution of each stratified ore body in this level, the pseudo-inclined ore chamber drift in the vein is arranged downhill; the long pseudo-inclined ore chamber drift in the vein is one of a rectangle or an arch, and the height and width of a single layer are both 3 - 5m; S3. Ventilation: Local fans are arranged in the intravein pseudo-inclined long ore chamber heading to ventilate the working face. The stoping working place is relatively enclosed. Before tunneling through to the lower crosscut along the vein, there is no natural air flow in the intravein pseudo-inclined long ore chamber heading. Therefore, local fans need to be arranged in the intravein pseudo-inclined long ore chamber heading to ventilate the working face. S4. Filling: After the stoping of the lower slice in the ore chamber heading, waste rock is used for filling at the bottom of this slice, with a filling height of 0.5 - 2.5 m. The surface layer is filled with cemented filling, with a cemented filling height of 2.5 - 4.5 m. After the curing of the surface layer cemented filling body, the compressive strength is ≥2.0 MPa, meeting the operation requirements of the mining and excavation equipment.
[0005] As a preferred technical solution, the intravein pseudo-inclined ore chamber headings start from the upper crosscut along the vein, are arranged obliquely downward along the ore body floor in multiple layers of pseudo-inclined ore chamber headings, and are connected to the lower crosscut along the vein. The pseudo-inclined ore chamber headings with corresponding gradients are arranged according to the actual inclination conditions of the ore body where they are located to enter the ore block.
[0006] As a preferred technical solution, within one stoping unit, stoping operations are carried out parallel to the crosscut along the vein in the middle section; in each slice of a single intravein pseudo-inclined long ore chamber heading, backfilling and stoping are carried out from bottom to top. According to the thickness of the ore body, the slice height is set to 3 - 5 m.
[0007] As a preferred technical solution, within one stoping unit, multiple intravein pseudo-inclined long ore chamber headings are arranged for parallel operations at intervals of 10 - 15 m along the strike.
[0008] As a preferred technical solution, during the stoping process, mechanized mining and excavation equipment is used to continuously stop the ore obliquely downward along the intravein pseudo-inclined long ore chamber heading until it reaches the lower crosscut along the vein.
[0009] As a preferred technical solution, after the S4 stoping is completed, the mined - out heading structure of the lower slice in the corresponding intravein pseudo-inclined long ore chamber heading has formed a natural space to be filled. During the filling process, the slurry flows into the goaf by gravity. The intravein pseudo-inclined long ore chamber heading structure has formed a natural space to be filled. After the filling retaining wall is constructed, the filling pipe is directly arranged at the upper crosscut of the intravein pseudo-inclined long ore chamber heading. The filling slurry fills the slice directly along the heading under the action of gravity, and the filling slurry has a good roof - contacting effect.
[0010] As a preferred technical solution, in S2, the slicing height and the number of slices are set according to the thickness of the ore body and the mining height of the continuous mining equipment. The mechanized continuous mining method is used to drive from the upper middle section to the bottom of the stope access road at the same inclination as a sliced stope access road; after the mining of the first sliced stope access road is completed, the mined-out area is filled with filling slurry. After the strength of the filling body is cured to the operation requirements, the mechanized continuous mining operation of the upper slice is carried out on its basis; when mining the second sliced ore body, the ore pass is extended to the end of the second sliced stope access road, and the second sliced stope is mined, filled, and cured. On this basis, the mechanized continuous mining operation of the upper slice is carried out; the subsequent slices are mined in sequence according to the steps of mining the second sliced ore body.
[0011] As a preferred technical solution, when filling the last sliced mined-out area in S4, a sealing measure is taken at the ore pass and the crosscut along the vein in the middle section, and the last sliced stope access road and the ore pass are filled together to complete the treatment of the mined-out area. Ensure that the surrounding stope access roads and ore passes have the conditions for engineering layout and safe construction.
[0012] As a preferred technical solution, at the initial stage of the mining engineering in S2, the bottom stope access road is arranged downhill along the ore body floor from the crosscut along the vein in the upper middle section of the mining unit, and is driven until it is flush with the ore body floor elevation of the crosscut along the vein in the lower middle section. After the mining and filling of the first sliced stope access road are completed, the cemented filling body is cured to meet the equipment operation requirements, and the upper slice is mined on this basis.
[0013] Advantages of the present invention: A mechanized continuous upward slicing filling mining method for long stope access roads in gently inclined medium-thick ore bodies is provided. The upward slicing filling mining method is applied to gently inclined medium-thick ore bodies. The method is based on the traditional upward slicing filling mining method, abandoning the sectional method and directly carrying out continuous mining in large middle sections, forming a relatively long stope access road, and adopting mechanized continuous mining technology, which greatly improves the ore recovery efficiency.
[0014] (1) Compared with the traditional off-vein development layout method, the development and cutting engineering of the present invention is arranged in the vein, which greatly reduces the amount of waste rock generated and reduces the development and cutting ratio.
[0015] (2) Directly use pseudo-inclined stope access roads with different slopes for mining. By increasing the length of the mining access road, increasing the cutting time of mining equipment, shortening the stope filling time, and reducing the frequency of setting up transfer sites, the mining intensity of the mine is significantly improved. When mining from the crosscut along the vein in the upper middle section to the lower middle section, the mechanical mining equipment can utilize its own gravity to improve the mining efficiency.
[0016] (3) In this mining method, the stope access road structure has formed a natural filling mold. After building the retaining wall, the slurry flows into the stope under the action of gravity, and the space formed after the filling slurry dehydrates and settles is concentrated on the surface layer, and the roof contact effect is excellent. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of a mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts according to the present invention; Figure 2 It is a top view of a mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts according to the present invention; Figure 3 It is a front view of a mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts according to the present invention; Figure 4 It is a schematic diagram of the stope layout and stoping sequence of a mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts according to the present invention; In the figure, 1 - ore body; 2 - crosscut along the vein in the level; 21 - upper crosscut along the vein in the level; 22 - lower crosscut along the vein in the level; 3 - retaining wall; 4 - ore room drift; 41 - ore room drift in the first layer; 42 - ore room drift in the second layer; 43 - ore room drift in the third layer; 44 - ore room drift in the fourth layer; 5 - connecting drift; 6 - belt conveyor drift; 7 - ore drawing drift. DETAILED DESCRIPTION OF THE INVENTION
[0018] In order to make the technical means, creative features, achieved purposes and effects of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.
[0019] The following embodiments only further illustrate the present invention in detail, but do not constitute any limitation to the present invention; the materials used in the following embodiments, unless otherwise specified, are all purchased from conventional chemical reagent companies and raw material suppliers.
[0020] Embodiment 1 A mechanized continuous filling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts, comprising the following steps: S1. Development engineering layout: According to the geological characteristics of the mining area, the ore body is divided into levels in the vertical direction. Each level is divided every 50 m to 120 m in the vertical direction of the ore body, and a crosscut along the vein in the level and a belt conveyor drift parallel to it are arranged; within each level, along the strike of the ore body, every 400 to 500 m is divided into a large stoping unit, and no development ramp or sublevel drift is arranged between levels. The ore body between the crosscuts along the vein in two adjacent levels is used as a stoping unit.
[0021] S2. Stoping: In the upper intermediate-level crosscut roadway, draw drift is arranged towards the ore body. From the end of the draw drift, a pseudo-inclined long ore room drift is excavated along the bottom of the ore body and inclined to the next intermediate level, forming a pseudo-inclined long ore room drift in the long vein. Between the upper intermediate-level crosscut roadway and the lower intermediate-level crosscut roadway, multi-layered pseudo-inclined ore room drifts are arranged within the vein. According to the stoping conditions of the ore body thickness distribution in each layer and this intermediate level, the pseudo-inclined ore room drift within the vein is arranged with a downhill gradient; the pseudo-inclined long ore room drift within the vein is one of rectangular or arched shape, and the height and width of a single layer are both 3 - 5 m; the pseudo-inclined ore room drift within the vein starts from the upper intermediate-level crosscut roadway, is arranged along the bottom of the ore body and inclined downward with multiple layers of pseudo-inclined ore room drifts, and is connected to the lower intermediate-level crosscut roadway. According to the actual inclination conditions of the ore body where it is located, the pseudo-inclined ore room drift with the corresponding gradient is arranged to enter the ore block.
[0022] The height and number of layers of each layer are set according to the ore body thickness and the mining height of the continuous mining equipment. The mechanized continuous mining method is used to drive from the upper intermediate level to the bottom of the ore room drift at the same inclination as one-layer ore room drift; after the stoping of the one-layer ore room drift, the goaf is filled with filling slurry. After the strength of the filling body is cured to meet the operation requirements, the mechanized continuous mining operation of the upper layer is carried out on its basis; when mining the ore body of the second layer, the draw drift is extended to the end of the second-layer ore room drift, and the stoping, filling, and curing of the second-layer ore room are carried out. On this basis, the mechanized continuous mining operation of the upper layer is carried out; the subsequent layers are mined in sequence according to the steps of mining the ore body of the second layer.
[0023] At the initial stage of the stoping project, the bottom ore room drift is arranged downhill along the bottom of the ore body from the upper intermediate-level crosscut roadway of the stoping unit and driven until it is flush with the elevation of the bottom of the ore body of the lower intermediate-level crosscut roadway. After the stoping and filling of the one-layer ore room drift are completed and the cemented filling body is cured to meet the equipment operation requirements, the upper layer is mined on its basis.
[0024] S3. Ventilation: A local fan is arranged in the pseudo-inclined long ore room drift within the vein to ventilate the working face; the stoping operation location is relatively enclosed. Before breaking through to the lower intermediate-level crosscut roadway, there is no natural air flow passing through the pseudo-inclined long ore room drift within the vein. Therefore, it is necessary to arrange a local fan in the pseudo-inclined long ore room drift within the vein to ventilate the working face; S4. Filling: After the lower-level stoping in the ore pass of the mine is completed, the bottom of this level is filled with waste rock, with a filling height of 0.5 - 2.5 m, and the surface layer is filled with cemented filling, with a cemented filling height of 2.5 - 4.5 m. After the surface layer cemented filling body is cured, the compressive strength is ≥ 2.0 MPa, meeting the operation requirements of the mining equipment. After the stoping is completed, the lower-level mined-out pass structure in the corresponding ore room pass has formed a natural space to be filled. During the filling process, the slurry flows into the goaf by gravity. The pseudo-inclined long ore room pass structure within the vein has formed a natural space to be filled. After the filling retaining wall is built, the filling pipe is directly arranged in the upper middle section of the ore room pass. The filling slurry fills the level directly along the pass under the action of gravity, and the filling slurry has a good effect of contacting the roof.
[0025] When filling the last-level goaf, airtight measures are taken at the ore-drawing roadway and the cross-cut along the vein in the middle section to fill the last-level ore room pass and the ore-drawing roadway together, completing the goaf treatment. Ensure that the surrounding ore room passes and the ore-drawing roadway have the conditions for engineering layout and safe construction.
[0026] Within one stoping unit, stoping operations are carried out parallel to the cross-cut along the vein in the middle section; in a single ore room pass, each level is filled and stoped from bottom to top. According to the thickness of the ore body, the level height is set to 3 - 5 m. Within one stoping unit, multiple ore room passes are arranged for parallel operation at intervals of 10 - 15 m along the strike. During the stoping process, mechanized mining equipment is used to continuously stop the ore along the inclined downward direction of the ore room pass until reaching the cross-cut along the vein in the lower middle section.
[0027] Example 2 A sedimentary phosphate ore deposit in Yunnan. The ore layer is controlled by the sedimentary environment and is distributed stably. The lithology of the ore layer is mainly phosphorite, banded phosphorite, sandy phosphorite, and gravelly phosphorite. The thickness of the ore body (1) is 9 - 15 m, with an average thickness of 12 m, and the average content of P2O5 is 25%. The roof of the ore layer is phosphate-bearing dolomite and siliceous mass dolomite, which is hard; the floor is siliceous rock, with a hard lithology. The occurrence of the ore layer is generally NE - SW in strike, SE in dip, and the dip angle is generally 5° - 25°, with an average dip angle of 15°.
[0028] The above upward slicing and filling mining method for gently inclined medium-thick ore bodies applied to stratified ore room passes is adopted, specifically as follows: S1. Intra-vein mining and cutting engineering layout: The ore body (1) is divided into one middle section in the vertical direction of 120 m. Each middle section is provided with a cross-cut along the vein in the middle section (2), a belt conveyor roadway (6), and a connecting roadway (5) connecting the two. The ore body between two middle sections is divided into one large stoping unit, and a long intra-vein pseudo-inclined long ore room pass from the top to the bottom is arranged within the vein with a 15% slope in the stoping unit.
[0029] S2. Stoping and filling: The in-vein pseudo-inclined long ore room drift (4) is mined and filled in layers from bottom to top. The in-vein pseudo-inclined ore room drift (4) is 4 m wide and 4 m high for a single layer. The elevation of the floor of the cross-vein haulage roadway (2) in the first mined layer is 1920 m, and the elevation range of the ore body mined in this level is 1800 m - 1920 m.
[0030] The in-vein pseudo-inclined ore room drift (4) is driven downhill at a slope of 15% from the cross-vein haulage roadway (21) in the upper level along the bottom of the ore body as the stoping space for one layer. After the elevation of the floor of the downhill in-vein pseudo-inclined ore room drift (4) is driven to 1800 m, a filling retaining wall (3) is built for filling. After the strength of the filling body meets the requirements of the mechanical continuous mining equipment, the stoping of the upper layer is carried out on the filling body. The bottom layer of the goaf of the one-layer ore room drift (41) is filled with waste rock. The waste rock from the mine tunneling project is transported to the goaf using a mine LHD, a loader, and a conveying equipment, and the waste rock is spread flat at the bottom of the goaf. The filling height of the waste rock is 0 - 3.5 m; the surface layer is filled with cemented filling. The filling slurry is mainly made by mixing tailings, coarse aggregate, fine aggregate, and cement or other cementitious materials. After being prepared at the filling station, it is transported to the goaf through pipelines. The cemented filling height in the in-vein pseudo-inclined long ore room drift (4) is 4 - 0.5 m, and the slurry fills the goaf; the mined-out ore room drift structure has formed a natural filling mold. After the strength of the filling body reaches 1.5 - 2.0 MPa, the stoping operation of the two-layer ore room drift (42) is carried out on the cast artificial false floor.
[0031] The height of the two-layer drift is also 4 m. The bottom layer is filled with waste rock with a filling height of 3.5 m, and the surface layer is filled with cemented filling with a filling height of 0.5 m. After the stoping and filling operation of the two-layer is completed, on the cast artificial false floor, the stoping of the three-layer ore room drift (43) and the four-layer ore room drift (44) continues in the same way. This stoping unit adopts four-layer continuous filling and stoping from bottom to top, and different stoping units can operate in parallel. When the strike span of a single stoping unit is relatively large, other in-vein pseudo-inclined long ore room drifts (4) can be driven at intervals of 10 - 15 m within a single stoping unit.
[0032] The thousand-ton cutting ratio of this invention is 4.5 m / kt, the dilution rate is 9 - 12%, and the loss rate is 8%. Compared with the traditional mechanized upward slicing and filling mining method, the thousand-ton cutting ratio is reduced by 14 - 16 percentage points, the dilution rate is reduced by 5 - 6 percentage points, and the loss rate is reduced by 15 percentage points.
[0033] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.
Claims
1. A mechanized continuous filling mining method for gently inclined medium-thick ore bodies with layered pseudo-inclined long drifts, characterized in that, It includes the following steps: S1. Mining and cutting engineering layout: According to the geological characteristics of the mining area, the ore body is divided into levels in the vertical direction. One level is divided every 50m - 120m in the vertical direction of the ore body. The level drift roadway and the belt conveyor roadway parallel to it are arranged. In each level, along the strike of the ore body, every 400 - 500m is divided into a large stoping unit. No mining access ramps or sublevel roadways are arranged between levels. The ore body between the level drift roadways of two adjacent levels is used as a stoping unit. S2. Stoping: An ore-drawing roadway is arranged from the level drift roadway in the upper level towards the ore body. An in-vein pseudo-inclined long ore chamber drift is formed by excavating from the end of the ore-drawing roadway along the bottom of the ore body to the lower level. Multiple-layered in-vein pseudo-inclined ore chamber drifts are arranged between the level drift roadway in the upper level and the level drift roadway in the lower level. According to the stoping conditions of the thickness distribution of the ore body in each layer and this level, the in-vein pseudo-inclined ore chamber drift is arranged with a downhill slope. The in-vein pseudo-inclined ore chamber drift is one of rectangular or arched shape. The height and width of a single layer are both 3 - 5m. S3. Ventilation: A local fan is arranged in the in-vein pseudo-inclined ore chamber drift to ventilate the working face. S4. Filling: After the stoping of the lower layer in the in-vein pseudo-inclined ore chamber drift, waste rock is used for filling at the bottom of this layer, with a filling height of 0.5 - 2.5m, and cemented filling is used for the surface layer, with a cemented filling height of 2.5 - 4.5m. After the curing of the surface layer cemented filling body, the compressive strength is ≥2.0MPa, meeting the operation requirements of the mining and excavation equipment.
2. The mechanized continuous backfilling mining method for gently inclined medium-thick ore bodies with layered pseudo-inclined long drift as claimed in claim 1, wherein: The in-vein pseudo-inclined ore chamber drift starts from the level drift roadway in the upper level, and multiple-layered in-vein pseudo-inclined ore chamber drifts are arranged along the bottom of the ore body with a downward slope and are connected to the level drift roadway in the lower level. The in-vein pseudo-inclined ore chamber drift with a corresponding slope is arranged according to the actual inclination conditions of the ore body where it is located to enter the ore block.
3. A mechanized continuous filling mining method for gently inclined medium-thick ore bodies with layered pseudo-inclined long drifts, as described in claim 1, is characterized in that: In a stoping unit, stoping operations are carried out parallel to the level drift roadway. In each layer of a single in-vein pseudo-inclined ore chamber drift, backfilling and stoping are carried out from bottom to top. According to the thickness of the ore body, the layer height is set to 3 - 5m.
4. A mechanized continuous filling mining method for gently inclined medium-thick ore bodies with layered pseudo-inclined long drifts, as described in claim 3, characterized in that: In a stoping unit, multiple in-vein pseudo-inclined ore chamber drifts are arranged for parallel operation at intervals of 10 - 15m along the strike.
5. A mechanized continuous backfilling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts, as claimed in claim 1, wherein: During the stoping process, mechanized mining and excavation equipment is used to continuously stop the ore along the in-vein pseudo-inclined ore chamber drift with a downward slope until it reaches the level drift roadway in the lower level.
6. A mechanized continuous backfilling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts, as described in claim 1, characterized in that: After the stoping in S4, a natural space to be filled has been formed in the lower layer mined-out drift structure in the corresponding in-vein pseudo-inclined ore chamber drift. During the filling process, the slurry flows into the goaf by gravity.
7. A mechanized continuous backfilling mining method for gently inclined medium-thick ore bodies with layered pseudo-inclined long drifts, as described in claim 1, characterized in that: In S2, the slicing height and the number of slices are set according to the thickness of the ore body and the mining height of the continuous mining equipment. The mechanized continuous mining method is used to drive from the upper middle section to the bottom of the pseudo-inclined ore chamber drift in the vein at the same inclination as a slice of ore chamber drift; after the mining of the first slice of ore chamber drift is completed, the goaf is filled with filling slurry. After the strength of the filling body is cured to the operation requirements, the mechanized continuous mining operation of the upper slice is carried out on its basis; when mining the second slice of ore body, the ore pass is extended to the end of the second slice of ore chamber drift, and the second slice of ore chamber is mined, ventilated, filled, and cured. On this basis, the mechanized continuous mining operation of the upper slice is carried out; the subsequent slices are mined in sequence according to the steps S2, S3, and S4 of mining the first slice of ore body.
8. A mechanized continuous backfilling mining method for gently inclined medium-thick ore bodies with layered pseudo-inclined long drifts, as described in claim 1, characterized in that: In S4, when filling the last slice of goaf, sealing measures are taken at the ore pass and the crosscut along the vein in the middle section, and the last slice of ore chamber drift and the ore pass are filled together to complete the goaf treatment; the sealing measures are to build a blocking measure at the ore pass and the crosscut along the vein in the middle section, and connect a filling pipe to the ore chamber drift; the blocking measure is one of a concrete retaining wall, a brick retaining wall, and a sandbag plugging.
9. A mechanized continuous backfilling mining method for gently inclined medium-thick ore bodies with stratified pseudo-inclined long drifts, as described in claim 1, characterized in that: In the initial stage of the mining project in S2, the bottom ore chamber drift is arranged downhill along the ore body floor from the crosscut along the vein in the upper middle section of the mining unit, and is driven until it is flush with the ore body floor elevation of the crosscut along the vein in the lower middle section. After the mining and filling of the first slice of ore chamber drift are completed, the cemented filling body is cured to meet the equipment operation requirements, and the upper slice is mined on this basis.