A fine-grained collaborative control mining method for steeply inclined thin ore veins with high sublevels

Abstract

The present invention relates to a fine high-subsection collaborative control mining method for steeply inclined thin ore veins. Through experimental research on the drilling parameters of the target engineering ore body and surrounding rock, the drilling speed range of the drilling equipment in the ore body and surrounding rock and the relationship between different drilling angles and drilling speeds inside the ore body are determined in a refined manner; the cutting raise is driven, and stoping is carried out along one side of the ore body; the ore body in the target mining section is divided into an upper subsection ore body and a lower subsection ore body. Upward parallel holes are arranged in the in-vein roadway by using a drilling rig. During the drilling process, the layout of the parallel holes is dynamically adjusted according to the previously determined speed parameters and the real-time data fed back by the drilling rig, and the drilling directions and positions of the boundary holes and internal holes are refinedly controlled. Then, upward parallel hole blasting is carried out on the upper subsection ore body and the lower subsection ore body to reduce the caving of waste rock and lower the blasting dilution rate.

Description

Technical Field

[0001] The invention relates to a steeply inclined thin ore vein mining technology, in particular to a steeply inclined thin ore vein high-segment refined collaborative control mining method. Background Art

[0002] Steeply inclined thin ore bodies usually refer to ore bodies with an inclination angle greater than 50° and an ore body thickness less than 5m. For steeply inclined thin ore bodies, the mining methods currently used mainly include upward horizontal layered dry filling method, wall cutting mining method, shallow hole ore retention method, etc. The mining process of these methods has problems such as low mining efficiency, high depletion rate, large overexplosion volume, high mining cost, workers directly exposed to work under the roof of the mining site, and high safety hazards. Moreover, as the shallow ore resources are gradually exhausted and the mining depth continues to deepen, the steeply inclined thin ore bodies tend to become smaller and thinner. Since there are slight changes in the angle and direction of the ore body, for the thinner steeply inclined thin ore body, the slight changes in the angle and direction of the ore body will have a greater impact on the boundary of the ore body. When using the existing mining methods, it is easy to blast and collapse too much waste rock during blasting, resulting in an increase in the depletion rate and the inability to achieve fine control of mining. Summary of the invention

[0003] The purpose of the present invention is to provide a method for highly segmented and refined coordinated control mining of steeply inclined thin ore veins, so as to solve the problem that conventional mining methods in the prior art cannot achieve safe, efficient and refined controlled mining of steeply inclined thin ore vein ore bodies.

[0004] The present invention is implemented as follows: a method for high-segmentation and refined collaborative control mining of steeply inclined thin ore veins, comprising the following steps.

[0005] S1. The rock drilling parameters of the ore body and surrounding rock of the target project are tested by on-site rock drilling equipment, and the drilling speed range of the rock drilling equipment operating in the ore body and surrounding rock under drilling pressure and the fitting relationship between the drilling speed and drilling angle of the rock drilling equipment operating in the ore body are obtained respectively.

[0006] S2. Multiple ore blocks are divided along the direction of the ore body. Pillars are set between two adjacent ore blocks. Different mine rooms are divided in the direction of the ore body direction by the pillars, and different middle sections of the ore body are divided in the height direction of the ore body by top pillars; segmented rock drilling tunnels are arranged on the middle section of the ore body to divide the middle section of the ore body into an upper segmented ore body and a lower segmented ore body; a cutting shaft is arranged at one end of the ore block.

[0007] S3, using the cut shaft as the free surface for backward blasting of the ore.

[0008] S31. Layout upward parallel holes along the inclined direction of the ore body in the sectional drifting roadway and the ore drawing roadway of the middle section. The upward parallel holes are medium-deep holes with high sections. The upward parallel holes include boundary holes and internal holes. During the drilling hole layout process, according to the drilling rotation speed range of the drilling equipment operating in the ore body and the surrounding rock under the drilling pressure determined in step S1, and the fitting relationship between the drilling rotation speed and the drilling angle of the drilling equipment operating in the ore body, combined with the rotation speed real-time feedback during the operation of the drilling equipment, the azimuth of the upward parallel hole layout is adjusted in real time dynamically to achieve parallel hole layout.

[0009] S32. Blast and draw the ore of the upper section ore body and the lower section ore body.

[0010] S4. After the ore drawing is completed, conduct subsequent filling of the mined-out area.

[0011] In step S31, the upward parallel holes are drilled with the drilling pressure determined in step S1, and the upward parallel holes are controlled in two direction dimensions of the front-back direction and the left-right direction. Among them, the ore body strike direction is the front-back direction, and the two sides of the ore body are the left-right direction.

[0012] When conducting the boundary hole drilling, first, according to the drilling rotation speed range of the drilling equipment operating in the ore body and the surrounding rock under the drilling pressure, combined with the drilling rotation speed of the drilling equipment collected in real time, compare and judge the current position of the drill bit of the drilling equipment. If it is located in the ore body, keep the left-right direction unchanged. If the drill bit deviates into the surrounding rock, adjust the left-right angle of the drill bit drilling until the drill bit is located inside the ore body.

[0013] At the same time, on the premise that the drill bit is located inside the ore body, according to the fitting relationship between the drilling rotation speed and the drilling angle of the drilling equipment operating in the ore body, substitute the actual drilling angle in the left-right direction of the drilling equipment into the fitting relationship to obtain the theoretical actual drilling rotation speed, compare it with the drilling rotation speed of the drilling equipment collected, judge whether there is a deviation in the front-back direction of the drilling angle, and adjust the drilling angle in the front-back dimension.

[0014] When conducting the internal hole drilling, the drilling equipment drills along an angle parallel to the boundary hole. According to the fitting relationship between the drilling rotation speed and the drilling angle of the drilling equipment operating in the ore body, substitute the actual drilling angle in the left-right direction of the drilling equipment into the fitting relationship to obtain the theoretical actual drilling rotation speed, compare it with the drilling rotation speed of the drilling equipment collected, judge whether there is a deviation in the front-back direction of the drilling angle, and adjust the drilling angle in the front-back dimension.

[0015] In step S32, the upper section ore body and the lower section ore body are blasted and the ore is drawn, and the upper section ore body is blasted with a certain distance ahead of the lower section ore body; after blasting, caved ore is generated, and two stepped upper and lower production working faces are formed on one side within the range of the middle section ore body.

[0016] The upward parallel holes adopt a plum blossom-shaped hole arrangement method, and the orifices of the upward parallel holes are located on the inner wall of the in-vein drilling drift.

[0017] The aperture of the upward parallel holes is 51 mm to 89 mm, the row spacing between adjacent upward parallel holes is 1 to 2 m, the hole spacing is 1 to 1.5 m, and the hole bottom spacing is 1 to 1.5 m.

[0018] In step S2, an ore-drawing drift of the upper middle-section ore body is provided at the upper part of the middle-section ore body, filling cross-cuts and ore-drawing cross-cuts are respectively arranged at the top and bottom of the middle-section ore body, a plurality of filling wells are uniformly arranged on the top pillar at the top of the middle-section ore body, and a middle-section ore-drawing drift is arranged along the ore body strike in the footwall surrounding rock at the bottom of the middle-section ore body; wherein, the middle-section ore-drawing drift is communicated with the ore-drawing cross-cut.

[0019] In step S4, a part of the ore is retained in the stope to support the surrounding rock, and the remaining ore is transported by a load-haul-dump machine through the ore-drawing cross-cut and the middle-section ore-drawing drift to the ore pass; after the ore block mining is completed, the ore is drawn centrally and uniformly; after the ore drawing is completed, unified subsequent dry waste rock filling is carried out, and the waste rock materials of the filling body enter the goaf through the filling cross-cut at the top of the middle-section ore body.

[0020] Through experimental research on the drilling parameters of the ore body and surrounding rock of the target project, the present invention accurately determines the drilling speed range of the ore body and surrounding rock and the relationship between different drilling angles and drilling speeds inside the ore body; the cutting raise is driven, and stoping is carried out along one side of the ore body; the middle-section ore body to be mined is divided into an upper sublevel ore body and a lower sublevel ore body, upward parallel holes are arranged in the in-vein drift by using a drilling rig, and during the drilling process, the layout of the parallel holes is dynamically adjusted according to the previously determined speed parameters and the real-time data fed back by the drilling rig, the drilling directions and positions of the boundary holes and internal holes are accurately controlled, and then upward parallel hole blasting is carried out on the upper sublevel ore body and the lower sublevel ore body to reduce the caving of waste rock and lower the blasting dilution rate. At the same time, unilateral cooperative blasting mining is carried out between the upper sublevel ore body and the lower sublevel ore body, and two stepped upper and lower production working faces are formed on one side within the middle-section ore body range, so as to realize the cooperative and accurate control mining of thin ore veins. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the front view of the mining method of the present invention.

[0022] Figure 2 is Figure 1 the A-A sectional view of

[0023] Figure 3 is for Figure 1 the B-B sectional view of

[0024] Figure 4This is a schematic diagram of the drilling angle of the rock drilling equipment of the present invention in the left-right direction.

[0025] Figure 5 This is a schematic diagram of the drilling angle of the rock drilling equipment of the present invention in the front-back direction.

[0026] Figure 6 This is the front view of the method for burying upward parallel holes of the present invention.

[0027] Figure 7 For appendix Figure 6 The C-C sectional view.

[0028] Figure 8 For appendix Figure 6 The D-D sectional view.

[0029] Figure 9 This is the layout diagram of the hole positions on the inner wall of the in-vein drift for rock drilling.

[0030] In the figure: 1. Upper sublevel ore body; 2. Lower sublevel ore body; 3. Ramp connecting drift; 4. Filling crosscut; 5. Ore-drawing drift in the upper-middle sublevel ore body; 6. Crown pillar; 7. Rib pillar; 8. Sublevel drift for rock drilling; 9. Ore-drawing crosscut; 10. Ore-drawing drift in the sublevel ore body; 11. Upward parallel holes; 12. Caved ore; 13. Cut raise; 14. Ore body boundary; 101. Ore body; 102. In-vein drift for rock drilling; 103. Wall of the in-vein drift for rock drilling; 111. Boundary holes; 112. Inner holes. Detailed implementation manners

[0031] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] Refer to Figures 1 to 9 , and now the fine-grained collaborative control mining method for steeply inclined thin ore veins will be described through specific implementation manners.

[0034] A certain uranium orebody has an inclination angle of about 80°, and the average thickness is about 3.3 m. The ore bodies in the deposit are all steeply inclined and nearly vertical ore bodies. All kinds of ores have different degrees of silicification. The surrounding rocks on the hanging wall and footwall of the tectonic belt are mostly sericitized cataclastic granite, medium-grained biotite granite and late fine-grained granite, etc., and there is also silicification to varying degrees, and there are few developed fractures and late main structures. From the mining situation in recent years and the construction results of exploration adit projects, there are few collapse phenomena in ore body 101 and its surrounding rocks, and the stability of ore body 101 and its roof and floor surrounding rocks is relatively good.

[0035] The following are the specific implementation steps for the mining of this uranium orebody:

[0036] S1. Drilling parameter test: Use on-site drilling equipment to test the drilling parameters of ore body 101 and its surrounding rocks in the target project, and obtain the drilling rotation speed range of the drilling equipment during operation in ore body 101 and its surrounding rocks under the drilling pressure, as well as the fitting relationship between the drilling rotation speed and the drilling angle of the drilling equipment during operation in ore body 101.

[0037] Set the drilling pressure of the drilling equipment according to on-site experience. The drilling pressure is determined according to the characteristics of ore body 101, and the drilling parameter test and the subsequent hole layout process are carried out under this drilling pressure.

[0038] Due to the different physical properties of ore body 101 and its surrounding rocks, when drilling operations are carried out in ore body 101 and its surrounding rocks respectively under the same drilling pressure, the drilling rotation speed of the drilling equipment will be different. At the same time, since the operation angle of the drill bit of the drilling equipment is different, to a certain extent, it will affect the end operation contact area and the drilling operation method, and the drilling angle will affect the drilling rotation speed under the fixed drilling pressure. Therefore, by conducting multiple drilling parameter tests at different angles in ore body 101 and its surrounding rocks respectively under the fixed drilling pressure, the drilling rotation speed range of the drilling equipment during operation in ore body 101 and its surrounding rocks under the drilling pressure and the fitting relationship between the drilling rotation speed and the drilling angle of the drilling equipment during operation in ore body 101 under the drilling pressure can be obtained.

[0039] S2. Mining and cutting of ore body 101: Divide multiple ore blocks along the strike of the ore body. There is an intermediate pillar 7 between two adjacent ore blocks. Different ore rooms are divided in the strike direction of the ore body through the intermediate pillar 7, and different middle-section ore bodies are divided in the height direction of the ore body through the top pillar 6; arrange sectional drilling headings 8 on the middle-section ore body to divide the middle-section ore body into upper sectional ore body 1 and lower sectional ore body 2; arrange a cutting raise 13 at one end of the ore block.

[0040] Meanwhile, an upper intermediate-level orebody ore-drawing drift 5 is provided above the intermediate-level orebody, a middle-level orebody ore-drawing drift 10 is provided below the intermediate-level orebody, filling cross-cuts 4 and ore-drawing cross-cuts 9 are respectively arranged at the top and bottom of the intermediate-level orebody, a plurality of filling shafts are evenly arranged on the crown pillar 6 at the top of the intermediate-level orebody, and the middle-level orebody ore-drawing drift 10 is arranged along the orebody strike in the footwall surrounding rock at the bottom of the intermediate-level orebody; among them, the middle-level orebody ore-drawing drift 10 is communicated with the ore-drawing cross-cut 9.

[0041] The cross drifts of each sublevel orebody are connected through ramp connecting drifts 3.

[0042] S3. Driving and stoping: Drive the cut raise 13 and use the cut raise 13 as a free face to carry out retreating and staged blasting for ore caving.

[0043] Taking the cut raise 13 as a free face, a plurality of upward parallel holes 11 are provided in both the upper sublevel orebody 1 and the lower sublevel orebody 2. The upward parallel holes 11 are arranged in the same row surface. The plurality of upward parallel holes 11 are parallel to each other, and the spacing between the plurality of upward parallel holes 11 is equal throughout the full length of the holes, and a cut groove is formed after blasting.

[0044] It specifically includes two steps of refined control of hole layout and blasting ore drawing.

[0045] S31. Refined control of hole layout: A plurality of upward parallel holes 11 are arranged along the inclination direction of the orebody 101 in the sublevel drilling drift 8 and the middle-level orebody ore-drawing drift 10. The orifice of the upward parallel hole 11 is located on the wall 103 of the in-vein drilling drift. The upward parallel hole 11 is a high-sublevel medium-deep hole. The upward parallel hole 11 is divided into boundary holes 111 and internal holes 112 according to its position. Among them, the boundary holes 111 are located on the orebody boundary 14, and the remaining upward parallel holes 11 are internal holes 112 located inside the orebody 101.

[0046] During the drilling and hole layout process, according to the drilling rotation speed range of the drilling equipment operating in the orebody 101 and the surrounding rock under the drilling pressure determined in step S1, and the fitting relationship between the drilling rotation speed and the drilling angle of the drilling equipment operating in the orebody 101, combined with the rotation speed real-time feedback during the operation of the drilling equipment, the azimuth of the upward parallel hole 11 layout is adjusted in real time dynamically to achieve parallel hole layout.

[0047] The upward parallel holes 11 are drilled with the drilling pressure determined in step S1, and the upward parallel holes 11 are controlled in two direction dimensions of the front-back direction and the left-right direction. Among them, the orebody strike direction is the front-back direction, and both sides of the orebody 101 are the left-right direction.

[0048] The drill bit rotation speed of the drilling equipment during the process of drilling holes is collected in real time. The drilling equipment can be a drilling jumbo or a rock drill, etc.

[0049] When drilling the boundary hole 111, first, according to the drilling rotation speed range of the rock drilling equipment when operating in the ore body 101 and the surrounding rock under the drilling pressure, combined with the real-time collected drilling rotation speed of the rock drilling equipment, compare and judge the current position of the drill bit of the rock drilling equipment. If the real-time collected drilling rotation speed of the rock drilling equipment belongs to the drilling rotation speed range determined in step S1 when the rock drilling equipment operates in the ore body 101, it means that the drill bit of the rock drilling equipment is located within the ore body 101, and keep the left-right direction of the drill bit of the rock drilling equipment unchanged. If the real-time collected drilling rotation speed of the rock drilling equipment belongs to the drilling rotation speed range determined in step S1 when the rock drilling equipment operates in the surrounding rock, it means that the drill bit has deviated into the surrounding rock, and it is necessary to adjust the left-right angle of the drill bit during drilling until the drill bit is located inside the ore body 101.

[0050] Determine the adjustment direction of the drill bit according to the size relationship of the drilling rotation speed ranges of the rock drilling equipment when operating in the surrounding rock and the ore body 101.

[0051] After the above adjustments, the drilling angle in the left-right direction is consistent with the angle of the ore body boundary 14. Ideally, there is no deviation in the drilling angle in the front-back direction, and the actual drilling angle in the left-right direction is equal to the angle of the ore body boundary 14, as Figure 4 shown. However, in reality, the drilling angle of the rock drilling equipment may still have a deviation in the front-back direction, as Figure 5 shown, which will result in the inconsistency between the actual drilling angle and the angle of the ore body boundary 14. Therefore, it is also necessary to judge whether there is a deviation in the front-back direction of the drilling angle.

[0052] On the premise that the drill bit is located inside the ore body 101, according to the fitting relationship formula between the drilling rotation speed and the drilling angle of the rock drilling equipment when operating in the ore body 101, substitute the actual drilling angle in the left-right direction of the rock drilling equipment into the fitting relationship formula to obtain the theoretical actual drilling rotation speed, and compare it with the collected drilling rotation speed of the rock drilling equipment to judge whether there is a deviation in the front-back direction of the drilling angle. If the calculated theoretical actual drilling rotation speed is consistent with the collected drilling rotation speed of the rock drilling equipment, it means that there is no deviation in the front-back direction. If the calculated theoretical actual drilling rotation speed is inconsistent with the collected drilling rotation speed of the rock drilling equipment, adjust the drilling angle in the front-back dimension according to the fitting relationship formula.

[0053] When drilling the internal hole 112, the rock drilling equipment drills at an angle parallel to the boundary hole 111. According to the fitting relationship formula between the drilling rotation speed and the drilling angle of the rock drilling equipment when operating in the ore body 101, substitute the actual drilling angle in the left-right direction of the rock drilling equipment into the fitting relationship formula to obtain the theoretical actual drilling rotation speed, and compare it with the collected drilling rotation speed of the rock drilling equipment to judge whether there is a deviation in the front-back direction of the drilling angle, and adjust the drilling angle in the front-back dimension.

[0054] Through the above steps, the angles of the upper and lower parallel holes can be accurately controlled. In particular, the angle of the boundary hole 111 can be accurately controlled, reducing the caving of waste rock during subsequent ore blasting and thus reducing the dilution rate.

[0055] S32. Blasting for ore extraction: Blast the upper-section ore body 1 and the lower-section ore body 2 for ore extraction.

[0056] The upper-section ore body 1 and the lower-section ore body 2 are blasted for ore extraction, and the upper-section ore body 1 is blasted with a certain distance ahead of the lower-section ore body 2; after blasting, caved ore 12 is generated, forming two stepped upper and lower production working faces on one side within the range of the middle-section ore body 101.

[0057] Specifically, the mining progress of the upper-section ore body 1 is always 5 - 8 m ahead of the lower-section ore body 2.

[0058] After blasting for ore extraction, the following steps are also included: Inspect the roof, and when encountering structurally damaged parts, take necessary bolt support measures as appropriate.

[0059] S4. Waste rock filling: After ore extraction is completed, subsequent filling is carried out for the mined-out area.

[0060] Part of the ore is retained in the stope to support the surrounding rock, and the rest of the ore is transported by a load-haul-dump (LHD) vehicle through the ore-drawing crosscut 9 and the middle-section ore-drawing level roadway 10 of the middle-section ore body to the ore pass; after the mining of the ore block is completed, centralized ore extraction is carried out; after ore extraction is completed, unified subsequent dry waste rock filling is carried out, and the filling waste rock material enters the mined-out area through the filling crosscut 4 at the top of the middle-section ore body.

[0061] Among them, as Figure 8 shown, in one embodiment, the upward parallel holes 11 are arranged in a plum blossom pattern, and the orifices of the upward parallel holes 11 are located on the inner wall of the in-vein drilling roadway 102.

[0062] The diameter of the upward parallel holes 11 is 51 mm - 89 mm, the row spacing between adjacent upward parallel holes 11 is 1 - 2 m, the hole spacing is 1 - 1.5 m, and the hole bottom spacing is 1 - 1.5 m.

[0063] Through the experimental study on the rock drilling parameters of the target engineering ore body and surrounding rock, the drilling rotation speed range of the rock drilling equipment in the ore body 101 and the surrounding rock and the relationship between different drilling angles and drilling rotation speeds inside the ore body 101 are determined in a refined manner; the cutting raise 13 is driven, and stoping is carried out along one side of the ore body 101; the target mined middle section ore body is divided into the upper section ore body 1 and the lower section ore body 2, upward parallel holes 11 are arranged in the in-vein roadway by using the rock drilling equipment, and during the rock drilling process, the layout of the parallel holes is dynamically adjusted according to the rotation speed parameters determined in the early stage and the real-time data fed back by the rock drilling equipment, and the drilling directions and positions of the boundary holes 111 and the internal holes 112 are controlled in a refined manner, and then upward parallel holes 11 are blasted to extract ore from the upper section ore body 1 and the lower section ore body 2 at the same time, reducing the caving of waste rock and lowering the blasting dilution rate. At the same time, unilateral cooperative blasting mining is carried out between the upper section ore body 1 and the lower section ore body 2, and two stepped upper and lower production working faces are formed on one side within the range of the middle section ore body, so as to realize the cooperative refined control mining of thin ore veins.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for high-segmented and refined collaborative control mining of steeply inclined thin ore veins, characterized in that: The following steps are involved: S1. Perform rock drilling parameter tests on the ore body and surrounding rock of the target project using on-site rock drilling equipment, and obtain the drilling speed range of the rock drilling equipment operating in the ore body and surrounding rock under drilling pressure, and the fitting relationship between the drilling speed and drilling angle of the rock drilling equipment operating in the ore body; S2. Multiple ore blocks are divided along the strike of the ore body, and pillars are arranged between two adjacent ore blocks. Different mine rooms are divided in the strike direction of the ore body by the pillars, and different middle sections of the ore body are divided in the height direction of the ore body by the top pillars; segmented rock drilling lanes are arranged on the middle section of the ore body to divide the middle section of the ore body into an upper segmented ore body and a lower segmented ore body; a cutting shaft is arranged at one end of the ore block; S3, using the cut shaft as the free surface for backward blasting; S31, arranging upward parallel holes along the inclined direction of the ore body in the segmented rock drilling lanes and the middle ore body exit lanes, the upward parallel holes are high-segmented medium-deep holes, and the upward parallel holes include boundary holes and internal holes; in the process of rock drilling hole arrangement, according to the drilling speed range of the rock drilling equipment operating in the ore body and surrounding rock under the drilling pressure determined in step S1 and the fitting relationship between the drilling speed and the drilling angle of the rock drilling equipment operating in the ore body, combined with the speed fed back in real time during the operation of the rock drilling equipment, the orientation of the upward parallel holes is adjusted dynamically in real time to achieve parallel hole arrangement; S32, blasting the upper and lower ore bodies; S4. After the mining is completed, the goaf will be filled.

2. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 1 is characterized in that: In step S31, upward parallel holes are drilled with the drilling pressure determined in step S1, and the upward parallel holes are controlled in two dimensions, namely, the front-to-back direction and the left-to-right direction, wherein the strike direction of the ore body is the front-to-back direction, and the two sides of the ore body are the left-to-right direction.

3. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 2 is characterized in that: When drilling a boundary hole, first determine the current position of the drill bit of the rock drilling equipment based on the drilling speed range of the rock drilling equipment operating in the ore body and surrounding rock under drilling pressure, combined with the real-time collected drilling speed of the rock drilling equipment. If it is located in the ore body, keep the left and right direction unchanged. If the drill bit deviates into the surrounding rock, adjust the left and right angle of the drill bit until the drill bit is located inside the ore body. At the same time, under the premise that the drill bit is located inside the ore body, according to the fitting relationship between the drilling speed and the drilling angle of the rock drilling equipment operating in the ore body, the actual drilling angle in the left and right directions of the rock drilling equipment is substituted into the fitting relationship to obtain the theoretical actual drilling speed. The theoretical actual drilling speed is compared with the collected drilling speed of the rock drilling equipment to determine whether the drilling angle is deviated in the front-to-back direction, and the drilling angle is adjusted in the front-to-back dimension.

4. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 2 is characterized in that: When drilling internal holes, the rock drilling equipment drills along an angle parallel to the boundary hole. According to the fitting relationship between the drilling speed and the drilling angle of the rock drilling equipment operating in the ore body, the actual drilling angle in the left and right directions of the rock drilling equipment is substituted into the fitting relationship to obtain the theoretical actual drilling speed. The theoretical actual drilling speed is compared with the collected drilling speed of the rock drilling equipment to determine whether the drilling angle is deviated in the front-to-back direction, and the drilling angle is adjusted in the front-to-back dimension.

5. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 1 is characterized in that: In step S32, the upper segmented ore body and the lower segmented ore body are blasted out, and the upper segmented ore body is blasted a distance ahead of the lower segmented ore body; after the blasting, collapsed ore is produced, and two stepped upper and lower production working faces are formed on one side within the range of the middle segmented ore body.

6. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 1 is characterized in that: The upward parallel holes are arranged in a plum blossom pattern, and the openings of the upward parallel holes are located on the inner wall of the rock drilling tunnel in the vein.

7. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 1 is characterized in that: The diameter of the upward parallel holes is 51 mm to 89 mm, the row spacing between adjacent upward parallel holes is 1 to 2 m, the hole spacing is 1 to 1.5 m, and the hole bottom spacing is 1 to 1.5 m.

8. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 1 is characterized in that: In step S2, a mining tunnel of the previous middle section ore body is provided on the upper part of the middle section ore body, a filling through vein and a mining through vein are arranged at the top and bottom of the middle section ore body respectively, a plurality of filling wells are evenly arranged on the top column at the top of the middle section ore body, and a mining tunnel of the middle section ore body is arranged along the direction of the ore body in the lower wall surrounding rock at the bottom of the middle section ore body; wherein, the mining tunnel of the middle section ore body is connected with the mining through vein.

9. The method for high-segmentation and refined coordinated control mining of steeply inclined thin ore veins according to claim 8 is characterized in that: In step S4, part of the ore is retained in the mining area to support the surrounding rock, and the rest of the ore is transported by the shovel loader through the mining vein and the middle ore body mining level tunnel to the chute; after the ore block mining is completed, the ore is discharged in a centralized manner; after the mining is completed, unified dry filling of waste rock is carried out, and the filling waste rock enters the goaf from the filling vein at the top of the middle ore body.

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