Multi-machine combined mining method for gently inclined broken ore body containing interlayer

Abstract

The invention discloses a multi-machine combined mining method for a gently inclined broken non-coal mine body containing an interlayer. The method comprises the following steps: S1, selecting mechanical mining equipment of an upper layer and a lower layer of an ore body according to the ore Prscherski coefficient, and determining corresponding mechanical non-explosive mining methods adopted by the upper layer and the lower layer of the ore body; s2, dividing the upper-layer ore body and the lower-layer ore body into a plurality of panels along the trend, and arranging corresponding mining preparation cutting projects according to a mechanical mining method determined by the upper-layer ore body and the lower-layer ore body; s3, performing corresponding stoping and ore removal engineering according to a mechanical mining method determined by the upper layer ore body and the lower layer ore body; and S4, performing corresponding filling engineering according to a mechanical mining method determined by the upper-layer ore body and the lower-layer ore body. Based on optimization and improvement of a mining machine fully mechanized mining and digging and anchoring all-in-one machine mining method in the prior art, two kinds of mechanical equipment can be adopted at the same time for stoping the interlayer-containing gently-inclined parallel multi-layer vein, separate mining and separate transportation are achieved, and the mining method has the advantages of being large in production capacity, high in safety, small in dilution loss and the like. The method is particularly suitable for stoping parallel ore body groups which are large in production scale and need separate mining and separate transportation.

Description

Technical Field

[0001] The present invention relates to the technical field of ore mining, and in particular to a multi-mechanical combined mining method for gently inclined broken ore bodies with interlayers. Background Art

[0002] Currently, for gently inclined broken ore bodies with interlayers, traditional drilling and blasting methods are often used. Whether it is one-time blasting or layered blasting, due to the difficulty in accurately controlling the blasting boundary, it is not only easy to mix waste rock interlayers into the ore, resulting in dilution, but also easy to incompletely recover the ore, causing losses. In recent years, mechanical mining methods have also been widely used in non-coal mine mining. However, most of the current methods use a single mechanical mining method, and there are still limitations in identifying ore bodies and waste rocks. As a result, during the mining process, a large amount of waste rock is inevitably mixed into the ore, or the ore is discarded together with the waste rock, resulting in relatively large dilution and losses. At the same time, the single mechanical mining method has poor adaptability to changes in the ore body shape. When encountering multiple layers and various types of ore bodies with complex and variable shapes, it is difficult to flexibly adjust the cutting trajectory of the mechanical mining equipment to adapt to changes in the ore body boundary. Therefore, whether using traditional drilling and blasting methods or a single mechanical mining method, due to the existence of waste rock interlayers, it often leads to relatively large losses and dilution, resulting in waste of resources.

[0003] At the same time, due to different ore types on both sides of the interlayer, mixed mining often increases the difficulty of subsequent ore dressing. Therefore, the existing mining methods cannot meet the requirements of multi-layer simultaneous mining and separate mining and transportation of multi-type ore bodies with interlayers. Summary of the Invention

[0004] In order to adapt to the mining of parallel ore body groups with large production scales that require separate mining and transportation, the present application provides a multi-mechanical combined mining method for gently inclined broken ore bodies with interlayers.

[0005] The present application provides a multi-mechanical combined mining method for gently inclined broken ore bodies with interlayers, adopting the following technical solutions:

[0006] A multi-mechanical combined mining method for gently inclined broken ore bodies with interlayers, characterized by including the following steps:

[0007] S1. Select mechanical mining equipment for the upper and lower layers of the ore body according to the Proctor coefficient of the ore;

[0008] S2. Divide the upper and lower ore bodies along the strike into multiple panels, and arrange the corresponding development and cutting works according to different mechanical mining methods;

[0009] S3. Carry out the corresponding stoping and ore drawing works according to different mechanical mining methods;

[0010] S4. Carry out the corresponding filling works according to different mechanical mining methods..

[0011] Optionally, in step S1, when the Proctor coefficient f of the ore is ≤ 4, full-mechanized mining with a mining machine is adopted; when f > 4, continuous miner - bolter mining is adopted.

[0012] Optionally, in step S2, when full-mechanized mining with a mining machine is adopted, trackless haulage roadways are arranged along the strike at the bottom of each panel ore seam. In the trackless haulage roadways, cross-cuts are arranged vertically along the strike of the ore body, and then a belt rise is arranged pseudo-inclined along the dip direction of the ore body. At the same time, a flat slope section is added to the belt rise, and a ore pass is arranged to communicate with the belt haulage roadway of the ore seam; the return air cross-heading and the haulage cross-heading are arranged along the dip at the top of the ore seam, and the belt haulage roadway of the ore seam is arranged along the panel horizontal at the bottom of the ore seam.

[0013] Optionally, in step S2, when continuous miner - bolter mining is adopted, the panel is divided into multiple sections from top to bottom, and each section is divided into strips.

[0014] Trackless haulage roadways, belt haulage roadways and ramps for personnel and material access are driven near the bottom of the ore seam; several transfer belt cross-cuts are driven to the boundary of the ore body in the panel for preparatory mining, and then the panel connecting roadway is driven. Along the working face in the panel connecting roadway, panel stratified return air and filling rises are driven up to the roof elevation; after that, the panel connecting roadways of each section are driven from bottom to top respectively, and finally continuous miner - bolter is used for strip mining.

[0015] Optionally, if the dip angle of the ore body is ≤ 9°, the strips are arranged along the dip of the ore body; if the dip angle of the ore body > 9°, to meet the equipment walking requirements, the strips are arranged pseudo-inclined along the dip of the ore body at this time.

[0016] Optionally, in step S3, when full-mechanized mining with a mining machine is adopted, the ore seam is mined from the cutting eye of the full-mechanized mining face of the ore seam from bottom to top using a mining machine and hydraulic supports along the dip; the mining machine operates continuously from bottom to top along the dip; the working face is equipped with a scraper conveyor to transport the cut ore to the belt in the haulage cross-heading and then transfer it. The ore is transferred to the belt rise through the transfer belt roadway, and then transferred to the panel centralized belt haulage roadway through the belt rise and the ore pass, and the ore is transported to the main shaft yard; after the hydraulic supports move up with the working face, the gob area is supported by single hydraulic props for the roof, and the single hydraulic props in the gob area are not recovered.

[0017] Optionally, in step S3, when the Proctor coefficient f of the ore > 4, continuous miner - bolter strip mining is used, and ore is dropped onto the bridge belt conveyor, and a telescopic belt is arranged at the rear for ore output; each layer first mines the central strip from the bottom to the top of the panel floor and makes permanent support, which serves as the panel stratified return air and filling rise; after all the strips in the panel layer are filled, the next layer mining continues; the ore is transported by the belt all the way to the panel centralized belt haulage roadway.

[0018] Optionally, in step S4, when fully-mechanized mining is carried out using a mining machine, after the working face advances an appropriate distance from the cutting roadway, the goaf can be backfilled. The backfilling pipeline enters the panel roof return airway, return airway, and return air crossheading from the surface through the backfilling borehole and then enters the goaf.

[0019] Optionally, in step S4, when strip mining is carried out using a continuous miner, after the segmented strip stopes are mined, a backfilling retaining wall is built at the end of the strip, and the backfilling pipeline is laid. The backfilling pipeline is filled in sequence according to the order of the trackless transportation roadway, trackless transportation crosscut, panel connection roadway, and the top of the strip stope; after the strip stope is filled once, the backfilling water separated at the top is pumped out by a submersible pump and discharged into the roadway drainage ditch through a water pipe.

[0020] In summary, the present application includes the following beneficial technical effects:

[0021] The present invention is an optimized improvement based on the existing single fully-mechanized mining using a mining machine and the continuous miner mining method. It can simultaneously use two mechanical equipment to mine gently inclined parallel multi-layer ore veins with interlayers, realizing separate mining and separate transportation. It has the characteristics of large production capacity, high safety, and small dilution and loss, and is particularly suitable for the mining of parallel ore bodies with large production scale and requiring separate mining and separate transportation. Description of the Drawings

[0022] Figure 1 is the sectional view of comprehensive tunneling mining of ore layer a in the embodiment;

[0023] Figure 2 is Figure 1 the enlarged view of part A in

[0024] Figure 3 is the sectional view of comprehensive mining of ore layer b in the embodiment along line II-II;

[0025] Figure 4 is Figure 1 the sectional view along line III-III of

[0026] Figure 5 is Figure 2 the sectional view along line IV-IV of

[0027] Description of the Reference Numerals:

[0028] 1. Ore layer transfer belt crosscut; 2. Panel access roadway in ore layer a; 3. Telescopic belt; 5. Upward return air filling roadway for stratified mining in ore layer a panel; 7. Trackless transportation crosscut in ore layer; 9. Crosscut between ore layers a and b; 10. Trackless transportation roadway; 11. Belt transportation roadway in ore layer a; 12. Belt transportation roadway in ore layer b; 15. Ramp; 19. Cut-through for fully mechanized mining face in ore layer b; 20. Crosscut in ore layer b; 21. Transition support; 22. Hydraulic support; 23. Return air crossheading in ore layer b; 24. Transportation crossheading in ore layer b; 25. Scraper conveyor; 26. Loader; 27. Mining machine; 28. Belt roadway uphill in ore layer b; 29. Ore pass in ore layer b; 30. Transfer crusher; 31. Belt transportation level roadway in ore layer b; 32. Transfer belt level roadway in ore layer b; 33. Safety pillar; 35. Return air roadway; 36. Return air stone gate. Detailed implementation manners

[0029] The following further elaborates on this application in conjunction with the attached Figures 1-5 drawings.

[0030] The embodiment of this application discloses a multi-machine combined mining method for gently inclined broken ore bodies with interlayers. First, the upper and lower ore bodies are divided into multiple panels along the strike, and then two mining methods are adopted according to the different Proctor coefficients of the ore;

[0031] When the Proctor coefficient f of the ore ≤ 4, the fully mechanized mining method with a mining machine is adopted;

[0032] Layout of development engineering: A trackless transportation roadway is arranged along the strike at the bottom of each section of the ore layer in the panel, a return air crossheading and a transportation crossheading are arranged along the dip at the top of the ore layer, and a belt transportation level roadway in the ore layer is arranged along the section horizontal at the bottom of the ore layer; The cross-sectional areas of the return air crossheading, the transportation crossheading and the cut-through are all 6.0m × 4.0m, with a rectangular cross-section;

[0033] Stoping construction: The ore layer is mined from the cut-through of the fully mechanized mining face in the ore layer from bottom to top along the dip using a mining machine and hydraulic supports; The mining machine operates continuously from bottom to top along the dip; The working face is equipped with a scraper conveyor to transport the cut ore to the belt in the transportation crossheading and then transfer it. The ore is transferred to the belt roadway uphill through the transfer belt level roadway, and through the belt roadway uphill and the ore pass, the ore is transferred to the centralized belt transportation roadway in the panel and then transported to the main shaft yard; After the hydraulic supports move up with the working face, the gob is supported by single hydraulic props, and the single hydraulic props in the gob are not recovered.

[0034] Filling construction: Cemented filling with a slurry with a concentration of 71% and a ratio of phosphogypsum: tailings = 3:1 - 3:2 is adopted; Starting from the cut-through, after the working face advances an appropriate distance, the gob can be filled. The filling pipeline enters the gob from the surface through the filling borehole, through the return air stone gate, the return air roadway, and the return air crossheading in the panel roof.

[0035] When the Proctor coefficient f of the ore is > 4, continuous miner strip mining is adopted.

[0036] Layout of development and preparatory engineering: Multiple sections are divided from top to bottom in the panel. Stripes are divided within the section. If the dip angle of the ore body is ≤ 9°, the stripes are arranged along the dip of the ore body. If the dip angle of the ore body is > 9°, to meet the requirements of equipment walking, at this time the stripes are arranged pseudo-inclined along the dip of the ore body; Preferably, the strike length of the panel is 150 - 200 m, the height of the panel is 200 m, the vertical height of the section is 50 m, and the width of the stripe is 6 m.

[0037] Drive the trackless haulage roadway, belt conveyor roadway for each section and the ramp for personnel and material access near the floor of the ore seam; Drive multiple transfer belt cross-cuts in the development and preparatory work to the boundary of the ore body in the panel of the ore seam, and then drive the panel connection roadway. Drive the panel stratified return air and backfill raise to the roof elevation along the working face in the panel connection roadway; After completion, drive the panel connection roadways of each section from bottom to top respectively.

[0038] Stoping construction: When the Proctor coefficient f of the ore is > 4, continuous miner strip mining is used, ore is dropped onto the bridge-type belt conveyor, and a telescopic belt is configured at the rear for ore output; For each layer, first mine the central stripe from the floor to the roof of the panel and make permanent support, which serves as the panel stratified return air and backfill raise; After all the stripes in the panel layer are filled, continue to start stoping the next layer; The ore is transported by the belt to the panel centralized belt conveyor roadway all the time.

[0039] Furthermore, if the thickness of the ore body > 5 m, then stratified stoping is considered, and the stratified stoping sequence is determined according to the stability of the roof surrounding rock.

[0040] Furthermore, when two ore seams are mined simultaneously, the operation frequency and operation time of mining equipment in the same vertical space should be reduced.

[0041] Preferably, the stratified height is 4.5 m, and the stripe stoping sequence is to mine one out of every two stripes.

[0042] Backfill construction: Cemented filling with a slurry with a concentration of 71% and a ratio of phosphogypsum: tailings = 3:1 - 3:2 is adopted; After the sectional stripe stoping is completed, build a backfill retaining wall at the end of the stripe and lay the backfill pipeline. The backfill pipeline is filled in sequence according to the trackless haulage roadway, trackless haulage cross-cut, panel connection roadway and the top of the strip stope; After filling the strip stope once, the backfill water separated at the top is pumped out by a submersible pump and discharged into the roadway drainage ditch through a water pipe.

[0043] Take a phosphate mine in Guizhou as an example.

[0044] The phosphate ore body is a gently inclined medium-thick ore body, mainly occurring at elevations from 0 m to 800 m. There are two ore layers in total. The upper ore layer is the b ore layer, with an inclination angle of 15.2°, an average thickness of 9.13 m, and it is calciummagnesium phosphate rock ore; the lower ore layer is the a ore layer, with an inclination angle of 15.2°, an average thickness of 16.95 m, and it is silicocalcium phosphate rock ore. Sub-mining and separate haulage need to be considered during mining. There is an interlayer between the a ore layer and the b ore layer, with an average thickness of 3.99 m. The roof of the ore body, the ore body and the interlayer are mainly composed of fine-grained dolomite. The rock is hard, brittle and fragmented, with poor stability; the floor of the ore body is argillaceous sandstone, with better stability.

[0045] The specific implementation steps are as follows:

[0046] 1) Section division

[0047] Divide the a and b ore layers into levels, with a level height of 200 m. Divide the panels along the strike. When mining the a ore layer, 6 panels are arranged in the mining area. In the panel, 4 sections are divided from top to bottom. The span of each section is 168 m, the inclined length is 284 m, and the vertical height is 50 m; when mining the b ore layer, the strike length of the panel is about 150 - 200 m, the panel height is 200 m, and the dip length is about 760 m.

[0048] 2) Ore body layering

[0049] For the a ore layer, on the elevation, from bottom to top, one section (with a span of 168 m, an inclined length of 284 m, and a vertical height of 50 m) is mined at a time. In the section, the ore body is mined in layers along the dip. The a ore layer (the lower ore body) is divided into 4 layers, with a layer height of 4 m.

[0050] For the b ore layer, on the plane, from left to right, one section (with a span of 162 m, an inclined length of 762.8 m, and a vertical height of 200 m) is mined at a time. The b ore layer (the upper ore body) is divided into 2 layers, with a layer height of 4.5 m.

[0051] 3) Development and extraction engineering

[0052] The main development and extraction engineering are all arranged in the vein. In the development system of the a ore layer, trackless haulage roadways 10 with lengths of 400 m, 500 m and 600 m, a 400 m ore layer belt conveyor roadway 11 and a ramp 15 (at elevations from 400 m to 600 m, for personnel and material access) are driven near the bottom of the a ore layer. Two ore layer transfer belt cross-cuts 1 are driven for development and extraction to the boundary of the a ore layer panel in the mining area, and then a 400 m panel connecting roadway 2 is driven. On the 400 m panel connecting roadway 2, a panel stratified return air and filling raise 5 is driven along the pseudo-inclined working face (9°) towards the middle of the panel to the 600 m elevation. After that, 450 m, 500 m, 550 m and 600 m ore layer panel connecting roadways 2 are driven from bottom to top respectively. Finally, a continuous miner EJM600 / 4 - 2 equipment is used for strip mining.

[0053] The development and cutting engineering of orebody b mainly includes the return air heading 23 of orebody b, the transportation heading 24 of orebody b, and the starting cut 19 of the fully mechanized mining face of orebody b. The cross-sections of the return air heading 23, the transportation heading 24, and the starting cut are all 6.0m×4.0m, rectangular cross-sections. The trackless transportation roadway 10 is arranged along the strike at the bottom plate of orebody a at the 400m, 500m, and 600m levels. The return air heading 23 and the transportation heading 24 are arranged along the dip at the top plate of orebody b. The belt transportation roadway 31 of orebody b at 500m is arranged along the 500m level at the bottom of orebody b. The ore of orebody b is transported to the belt raise 28 of orebody b through the transfer belt roadway 34 of orebody b at 500m. The ore is transported to the belt transportation roadway 12 of orebody b at 400m through the belt raise 28 of orebody b and the ore pass 29 of orebody b, and then the ore is transported to the main shaft yard.

[0054] 4) Stoping

[0055] For orebody a, the EJM600 / 4-2 roadheader-anchoring machine is used for strip mining. The ore is dropped onto the bridge belt conveyor, and a retractable belt conveyor is configured at the rear for ore extraction. The strips are arranged in a pseudo-inclined manner along the dip, with an inclination angle of 9°, and 1 is mined out of every 2. A total of 28 strips are arranged in the panel. Each slice starts from the 16th central strip for stoping, from the 400m elevation to the 600m elevation, and permanent support is provided, serving as the return air and filling raise 5 for the slices of orebody a in the panel. After all the strips in the panel slice are filled, the stoping of the next slice continues.

[0056] For orebody b, the MG900 / 2240-WD type AC electric drive shearer is used for stoping from the bottom up along the dip starting from the starting cut 19 of the fully mechanized mining face of orebody b, supporting with hydraulic supports (model ZC12000 / 30 / 52D, center distance between supports 1750mm, working resistance 12000KN). The cutting depth is about 0.8m. Cutting 1 pass (width about 0.8m) along the strike is 1 cycle, and 2 passes are cut per shift, completing 2 cycles. The shearer 27 operates continuously from the bottom up along the dip. The working face is equipped with a scraper conveyor 25 of model SGZ1000 / 1400 (length 150m - 200m) to transport the cut ore to the belt in the transportation heading 24 of orebody b for further transfer. After the hydraulic supports 22 move up with the working face, the gob is supported by DW45-200 / 110(G) high-titanium alloy single hydraulic props. The row spacing and column spacing of the hydraulic props are both 6m. Starting from the starting cut, after the working face advances 4 cycles (not exceeding 7 cycles), the gob can be filled, and the single hydraulic props in the gob are not recovered.

[0057] It should be noted that when orebody a and orebody b are mined simultaneously, from the perspectives of management and design, the operation frequency and operation time of mining equipment in the same vertical space should be minimized as much as possible to avoid the instability and damage of ore and rock caused by the mutual influence of equipment operations.

[0058] 5) Filling

[0059] All filling operations adopt paste cemented filling with a slurry concentration of 71% and a ratio of phosphogypsum to tailings of 3:1 to 3:2. After each strip in the a ore layer is mined, a filling retaining wall with a thickness of 1200 mm is built at the end of the strip. The laying method of the filling pipeline is as follows: 18 in the 500 m trackless transportation roadway → 7 in the 500 m ore layer trackless transportation crosscut → 8 in the 500 m ore layer panel connecting roadway → the top of the strip-shaped stope → filling. After the strip-shaped stope is filled once, the filling water precipitated at the top is pumped out by a submersible pump and discharged into the roadway drainage ditch through a water pipe.

[0060] In the b ore layer, starting from the open-off cut, after the working face advances an appropriate distance, the gob can be filled in an open manner. The filling pipeline enters the gob from the ground through a filling borehole, through the 600 m return air crossheading 36, the 600 m return air roadway 35, and the return air heading 23, and fills the gob of 4 working cycles at one time (with a length of 150 - 200 m and a width of 3.2 m).

[0061] The overall panel production capacity of the a ore layer and the b ore layer of the present invention is 18,000 t / d, the loss rate is 8%, the dilution rate is 5%, and the mining and development ratio per 1000 tons is 0.99 kt / m. Compared with other non-mechanical mining methods, without a significant increase in the dilution and loss rate, the panel production capacity is greatly improved and the mining and development ratio is greatly reduced.

[0062] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A multi-machine joint mining method for a gently inclined broken ore body containing interlayers, characterized in that The steps include: S1. Select mechanical mining equipment for the upper and lower layers of the ore body according to the Proctor coefficient of the ore, and determine the corresponding mechanized non-explosive mining method used for the upper and lower layers of the ore body; S2. Divide the upper and lower ore bodies into multiple panels along the strike direction, and arrange the corresponding mining and cutting works according to the mechanical mining methods determined for the upper and lower ore bodies; S3. Carry out the corresponding mining and mining works according to the mechanical mining methods determined by the upper and lower ore bodies; S4. Carry out the corresponding filling works according to the mechanical mining method determined by the upper and lower ore bodies.

2. A multi-machine joint mining method for a gently inclined broken ore body containing interlayers according to claim 1, characterized in that: In step S1, when the ore Procter coefficient f≤4, a fully mechanized mining machine is used for mining; when the Procter coefficient f>4, a mining and anchoring integrated machine is used for mining.

3. A multi-machine joint mining method for a gently inclined broken ore body containing interlayers according to claim 2, characterized in that: In step S2, when a mining machine is used for comprehensive mining, a trackless transport tunnel is arranged along the strike at the bottom plate of each segmented ore layer in the disk area, an uphill through vein is arranged in the trackless transport tunnel perpendicular to the strike direction of the ore body, and then a belt conveyor is arranged uphill pseudo-inclined along the inclination direction of the ore body. At the same time, a flat slope section is added to the belt conveyor uphill, and a chute is arranged to communicate with the ore layer belt transport tunnel; a return air chute and a transport chute are arranged along the inclination at the top plate of the ore layer, and a ore layer belt transport tunnel is arranged horizontally along the sections at the bottom of the ore layer.

4. The method for multi-machine combined mining of a gently inclined crushed ore body containing interlayers according to claim 3 is characterized by: In step S2, when the integrated miner and anchor machine is mining, the disk area is divided into multiple sections from top to bottom, and the sections are divided into strips; Each section of trackless transport tunnels, belt transport tunnels and ramps for the entry and exit of personnel and materials are excavated near the bottom plate of the ore layer; multiple transfer belts are excavated through the veins to the boundary of the ore body in the ore layer plate area, and then the plate area connecting road is excavated. On the plate area connecting road, the plate area layered return air and filling are excavated along the working face to the middle of the plate area up the mountain to the top plate elevation; after completion, the plate area connecting roads of each section are excavated from bottom to top, and finally the strip mining is carried out using an all-in-one excavator and anchor machine.

5. A multi-machine joint mining method for a gently inclined crushed ore body containing interlayers according to claim 4, characterized in that: If the inclination of the ore body is ≤9°, the strips are arranged along the inclination of the ore body. If the inclination of the ore body is greater than 9°, in order to meet the requirements of equipment travel, the strips are arranged pseudo-inclined along the inclination of the ore body.

6. A multi-machine joint mining method for a gently inclined broken ore body containing interlayers according to claim 5, characterized in that: In step S3, when the Proctor coefficient f≤4 of the ore, comprehensive mining with mining machines is adopted, and the ore layer is mined from bottom to top along the inclination from the comprehensive mining working face of the ore layer, and mining machines and hydraulic supports are used for recovery; the mining machine operates continuously from bottom to top along the inclination; the scraper conveyor of the working face transports the cut ore to the belt in the transport chute for further transportation, and the ore is transported to the belt uphill through the transport belt level lane, and the ore is transported to the disk area centralized belt transport lane through the belt uphill and chute, and the ore is transported to the main shaft yard; after the hydraulic support moves up with the working face, the goaf adopts a single hydraulic pillar to support the roof, and the single hydraulic pillar in the goaf is not recovered.

7. A multi-machine joint mining method for a gently inclined broken ore body containing interlayers according to claim 6, characterized in that: In step S3, when the ore Proctor coefficient f>4, the strip mining is carried out by using the integrated digging and anchoring machine, and the ore is dropped onto the bridge belt conveyor, and a retractable belt is arranged at the rear to unload the ore; each layer first mines the central strip from the bottom plate to the top plate of the panel area, and makes permanent support, which is used as the panel area layer return air and filling up the mountain; after all the strips in the panel area layer are filled, the next layer mining is started; The ore is transported by belt all the way to the concentrated belt transport lane in the disc area.

8. A multi-machine joint mining method for a gently inclined broken ore body containing interlayers according to claim 7, characterized in that: In step S4, when a mining machine is used for comprehensive mining, the goaf can be filled after the working face advances a proper distance from the opening of the cut. The filling pipeline enters the goaf from the surface through the filling borehole into the return air stone gate, return air lane, and return air chute on the top of the panel area.

9. A multi-machine joint mining method for a gently inclined broken ore body containing interlayers according to claim 8, characterized in that: In step S4, when mining is carried out with an integrated drilling and anchoring machine, after the segmented strip is mined, a filling retaining wall is built at the end of the strip, and a filling pipe is laid. The filling pipe is filled in sequence according to the trackless transport lane, trackless transport through-vein, disk area connecting road and the top of the strip mining area; after the strip mining area is filled once, the filling water precipitated from the top is extracted by a submersible pump and discharged into the lane ditch through a water pipe.

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