Reconstruction subsection continuous mining and filling mining method for thick and large ore body mining environment

Abstract

The invention discloses a thick and large ore body mining environment reconstruction subsection continuous mining and filling mining method, which relates to the technical field of mining and comprises the steps of accurate mining cutting, stope top plate pre-supporting, perforation blasting, ore removal and filling. The mining preparation cutting comprises the steps that an ore body is divided into a plurality of stopes at intervals, sublevel rock drilling roadways, ore receiving roadways and top ventilation filling roadways are formed in the stopes, and transportation roadways are formed outside the stopes; the stope top plate pre-supporting step comprises the steps that a short transverse drift roadway which is perpendicular to and communicated with the segmented rock drilling roadway is horizontally formed in the stope, an anchor cable supporting transverse drift roadway which is perpendicular to and communicated with the top ventilation filling roadway is formed, and multiple rows of pre-stressed anchor cables are arranged in the anchor cable supporting transverse drift roadway; the perforation blasting step comprises the steps that a plurality of medium-length holes are drilled towards the periphery with the segmented drilling roadway and the top ventilation filling roadway as the center, explosives are arranged in the medium-length holes, and blasting is conducted on the cutting grooves in batches. The structure stability in the stope can be improved, and the occurrence probability of collapse accidents is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mining, and in particular to a segmented continuous mining and filling mining method for reconstructing a thick and large ore body mining environment. Background Art

[0002] Thick ore bodies refer to ore bodies with a thickness of 10 to 15 meters. At present, for the mining of inclined and steeply inclined thick ore bodies, the segmented rock drilling stage empty field method and the pillarless segmented caving method can be used respectively according to the stability of the ore and rock. The characteristics are as follows: The characteristics of the segmented rock drilling stage empty field method are: this mining method is suitable for thick ore bodies with moderate stability or above and steep inclination of ore and surrounding rock; the stage ore body is divided into sections, and rock drilling is carried out in the rock drilling tunnel, and the ore is concentrated through the stage bottom structure; the natural support of the ore pillars and the stability of the surrounding rock itself are used to maintain the goaf area, and the goaf is mined. A large exposed area is allowed in a certain period of time; a mining method that uses two-step mining of the mine room and the pillars; the characteristics of the pillarless sublevel caving method are: the stage ore body is divided into sections, and single-step mining is carried out continuously from top to bottom; the mining tunnels are arranged in a herringbone shape, and the sublevel drilling, caving and mining are all carried out in the mining tunnels, and the ore is mined under the collapsed rock cover; while caving the ore, the surrounding rock is forced or naturally collapsed to fill the empty area, which is a mining method for achieving ground pressure control and ground pressure management. The existing technology has the problem of poor stability of the mining field, which is prone to accidents such as landslides. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a segmented continuous mining and filling mining method for reconstructing the mining environment of a thick and large ore body, which can improve the structural stability in the stope and reduce the probability of landslide accidents.

[0004] According to an embodiment of the first aspect of the present invention, a segmented continuous mining and filling mining method for recreating a thick and large ore body mining environment comprises: accurate mining and cutting, pre-support of the mine roof, perforation blasting, mining, and filling. The accurate mining and cutting step is as follows: the ore body is divided into multiple mines along the direction of the ore body, and segmented rock drilling tunnels extending along the direction of the ore body are opened in the mines. The segmented rock drilling tunnels divide the mines into an upper mining section and a lower mining section, and a receiving mine tunnel is set below the lower mining section: a top ventilation and filling tunnel is set above the upper mining section, and a transportation tunnel connected to the segmented rock drilling tunnel is opened outside the mine; the mine roof pre-support step is as follows: a short through-vein tunnel is opened horizontally in the mine that is perpendicular to and connected to the segmented rock drilling tunnel, and a tunnel is opened at the bottom of the mine. An anchor cable supported through-vein tunnel is horizontally opened above the short through-vein tunnel and is perpendicular to and connected to the top ventilation and filling tunnel, and multiple rows of prestressed anchor cables are arranged downward in the anchor cable supported through-vein tunnel; the perforation and blasting step is as follows: a plurality of medium-depth holes are drilled around the segmented rock drilling tunnel and the top ventilation and filling tunnel as the center, explosives are installed in the medium-depth holes and blasted in batches; the ore unloading step is as follows: the blasted ore is transported to the ground through the transport tunnel; the filling step is as follows: filling the space after mining in the mining area.

[0005] A segmented continuous mining and filling mining method for reconstructing a thick and large ore body mining environment according to an embodiment of the present invention has at least the following beneficial effects: prestressed anchor cables are arranged between the short through-vein tunnel and the anchor-supported through-vein tunnel before the perforation blasting step, which can prevent the ore body from collapsing during rock drilling and, to a certain extent, prevent the surrounding rock outside the ore body from being shaken off by the impact force of the explosion during blasting. Since the mixing of surrounding rock into the ore will cause ore depletion, the arrangement of prestressed anchor cables can prevent ore depletion.

[0006] According to some embodiments of the present invention, fixed wireless communication base stations and mobile wireless communication base stations are provided in the segmented rock drilling tunnel, the mining tunnel and the top ventilation and filling tunnel; in the perforation and blasting step, an intelligent rock drilling trolley with a remote wireless control function is used for rock drilling, and a remote-controlled charging trolley with a remote wireless control function is used for loading explosives; in the ore-exporting step, a remote-controlled shovel loader with a remote wireless control function is used for transportation, so as to realize unmanned automated intelligent mining.

[0007] According to some embodiments of the present invention, the multiple mining areas are grouped into one-step mining areas and two-step mining areas, the multiple one-step mining areas are aligned in the vertical direction, the multiple two-step mining areas are aligned in the vertical direction, the one-step mining areas are spaced apart from the two-step mining areas, and the one-step mining areas are mined first and then the two-step mining areas.

[0008] According to some embodiments of the present invention, the mining sequence of the one-step stope is top-down mining, and the mining sequence of the two-step stope is top-down mining.

[0009] According to some embodiments of the present invention, mining is carried out in the stope starting from a lower center position toward both wings.

[0010] According to some embodiments of the present invention, the stope is ventilated from bottom to top after the perforating and blasting step.

[0011] According to some embodiments of the present invention, the transport tunnel includes a through-vein ore-exit transport tunnel, a chute, a middle-section along-the-vein transport tunnel, and a through-vein intermediate transport tunnel. The middle-section along-the-vein transport tunnel is connected to the ground outlet to transport ore to the ground. The middle-section along-the-vein transport tunnel is connected to the receiving tunnel through the through-vein ore-exit transport tunnel. The chute is vertically arranged, and the lower end of the chute is connected to the middle-section along-the-vein transport tunnel. The through-vein intermediate transport tunnel is used to connect the segmented rock drilling tunnel and the chute.

[0012] According to some embodiments of the present invention, a plurality of the vein-penetrating intermediate transport lanes are provided, and adjacent vein-penetrating intermediate transport lanes are connected via segmented transport lanes.

[0013] According to some embodiments of the present invention, the stope roof pre-support step further comprises installing short anchor rods for roof protection or installing short anchor rods and anchor nets for combined support at unstable locations of the ore body.

[0014] According to some embodiments of the present invention, the perforation blasting step further includes drilling the medium-depth holes distributed in a fan shape upward in the mining tunnel.

[0015] A segmented continuous mining and filling mining method for reconstructing a thick ore body mining environment according to an embodiment of the present invention has at least the following beneficial effects:

[0016] (1) Before the perforation and blasting step, prestressed anchor cables are arranged between the short vein tunnel and the anchor cable supported vein tunnel, which can prevent the ore body from collapsing during rock drilling and, to a certain extent, prevent the surrounding rock outside the ore body from being shaken off by the impact force of the explosion during blasting, thereby preventing the ore from being depleted;

[0017] (2) After the first-step mining area is filled, the second-step mining area is mined. This mining method can mine the ore body as much as possible and improve the mining rate of the ore body;

[0018] (3) Drilling medium-depth holes distributed in a fan shape upward in the receiving tunnel forms a funnel shape above the receiving tunnel to receive the ore falling from above, so that the receiving tunnel can receive as much falling ore as possible, which can effectively improve the efficiency of ore transportation.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 A front cross-sectional view of a stope structure according to an embodiment of the present invention;

[0022] Figure 2 A side sectional view of a stope structure according to an embodiment of the present invention

[0023] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0024] Figure Number:

[0025] Stope 100, ore fragments 101, ore pillars 102, upper mining section 110, lower mining section 120;

[0026] 200 staged rock drilling tunnels;

[0027] The mine tunnel is 300;

[0028] Top ventilation filling tunnel 400, filling material 401;

[0029] Transport tunnel 500, mine-exit transport tunnel 510, chute 520, middle section transport tunnel along the vein 530, and middle transport tunnel through the vein 540;

[0030] Short through-vein lane 600;

[0031] Anchor cable support through-vein tunnel 700, prestressed anchor cable 710;

[0032] Medium depth hole 800;

[0033] Segmented transport tunnel 900. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0035] In the description of the present invention, it should be understood that descriptions involving orientation, such as orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are 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 understood as a limitation on the present invention.

[0036] In the description of the present invention, "a plurality" means more than two. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0037] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0038] Reference Figures 1 to 3As shown, a method for segmented continuous mining and filling for reconstructing a thick ore body mining environment according to an embodiment of the present invention includes: accurate mining and cutting, pre-support of the stope roof, perforation blasting, mining, and filling. The accurate mining and cutting step is: dividing the ore body into multiple stopes 100 at intervals along the direction of the ore body. Each stope 100 is 80m long, 60m high, and has a width equal to the thickness of the ore body. Mine pillars 102 are left between the stopes 100 adjacent in the horizontal direction. The stopes 100 adjacent in the vertical direction are close to each other without leaving any top pillars. A segmented rock drilling tunnel 200 extending along the direction of the ore body is opened in the stope 100. The segmented rock drilling tunnel 200 is horizontally arranged and located in the middle of the stope 100. The segmented rock drilling tunnel 200 divides the stope 100 into an upper mining section 110 and a lower mining section 120. The heights of the upper mining section 110 and the lower mining section 120 are both 30m. The receiving tunnel 300 is set at the bottom of the lower mining section 120: the receiving tunnel 300 is set horizontally and extends along the direction of the ore body. The receiving tunnel 300 is located at the bottom of the lower mining section 120. The receiving tunnel 300 is used to receive the ore dropped after blasting. The top ventilation and filling tunnel 400 is set at the top of the upper mining section 110, and the top ventilation and filling tunnel 400 is located at the center of the thickness direction of the ore body. The top ventilation and filling tunnel 400 and the receiving tunnel 300 are parallel to the segmented rock drilling tunnel 200. A transportation tunnel 500 connected to the segmented rock drilling tunnel 200 is opened outside the mining area 100; the transportation tunnel 500 is used to transport ore. The steps of pre-supporting the roof of the mining area are: a short through-vein tunnel 600 is opened horizontally in the mining area 100, which is perpendicular to and connected to the segmented rock drilling tunnel 200, and the short through-vein tunnel 600 extends in the opposite direction of the inclination of the ore body. An anchor cable support through-vein tunnel 700 is opened horizontally above the short through-vein tunnel 600, which is perpendicular to and connected to the top ventilation filling tunnel 400. The anchor cable support through-vein tunnel 700 extends in the opposite direction of the inclination of the ore body. The anchor cable support through-vein tunnel 700 should be located above the ore body. Prestressed anchor cables 710 are set downwardly in the anchor cable support through-vein tunnel 700; the prestressed anchor cables 710 are used to fix the roof of the mining field 100. Multiple rows of prestressed anchor cables 710 are evenly arranged in a fan shape to fix the roof of the entire mining field 100. By setting prestressed anchor cables 710 between the roof of the mining field 100 and the anchor cable support through-vein tunnel 700, the risk of collapse in the mining field 100 can be effectively reduced. The perforation blasting steps are as follows: a plurality of medium-depth holes 800 are drilled around the segmented rock drilling tunnel 200 and the top ventilation and filling tunnel 400, and some of the medium-depth holes 800 are arranged in a radial shape with the segmented rock drilling tunnel 200 as the center. Some of the medium-depth holes 800 are arranged in a radial shape with the top ventilation and filling tunnel 400 as the center. Explosives are installed in the medium-depth holes 800 and blasted in batches along the cutting groove. Since the segmented rock drilling tunnel 200 and the top ventilation and filling tunnel 400 are both located at the center of the ore body in the thickness direction, the medium-depth holes 800 can cover most of the ore body so that the ore size after blasting is similar for easy transportation.It is foreseeable that after blasting, the prestressed anchor cables 710 are set up by drilling the anchor cable support through-vein tunnel 700 to reinforce the slope and top surface of the mining area 100, and multiple prestressed anchor cables 710 are distributed in a fan shape. The prestressed anchor cables 710 are anchored into the rock mass through the holes of the weak structural surface of the rock mass by the anchor head, connecting the unstable part of the top of the mining area 100 with the stable rock layer, thereby changing the stress state of the slope and improving the integrity and strength of the slope. Prevent the mining area 100 from collapsing or falling of gravel in the mining step after blasting. The mining step is: transporting the blasted ore to the ground through the transportation tunnel 500; the filling step is: setting a retaining wall in the transportation tunnel 500, and using the filling material 401 to fill the space after mining. The filling material 401 uses tailings in the ore dressing plant or waste rock produced by the development of various tunnels. Before the perforation blasting step, the prestressed anchor cable 710 is set between the short vein tunnel 600 and the anchor cable support vein tunnel 700, which can prevent the ore body from collapsing during rock drilling, and can also prevent the surrounding rock outside the ore body from being shaken off by the explosion impact force during blasting to a certain extent. Since the surrounding rock mixed with the ore will cause ore depletion, the prestressed anchor cable 710 can prevent ore depletion. After blasting, the prestressed anchor cable 710 is continued to be set through the anchor cable support vein tunnel 700 to reinforce the surrounding rock at the edge of the stope 100, which can prevent the stope 100 from collapsing during the mining step.

[0039] Reference Figures 1 to 3 As shown, it can be understood that the segmented rock drilling tunnel 200, the mine receiving tunnel 300 and the top ventilation filling tunnel 400 are provided with fixed wireless communication base stations and mobile wireless communication base stations. In the rock drilling and blasting steps, an intelligent rock drilling trolley with remote wireless control function is used for rock drilling, and a remote control charging trolley with remote wireless control function is used to install explosives. In the mining step, a remote control shovel loader with remote wireless control function is used for transportation to realize unmanned automated intelligent mining. Fixed wireless communication base stations and mobile wireless communication base stations form a wireless communication system to provide a wireless network and reduce the risk of disconnection. The wireless communication system is connected to the external network through an optical fiber ring network to transmit signals to the intelligent rock drilling trolley, the intelligent charging trolley, and the intelligent shovel loader. The optical fiber ring network not only has the high-speed transmission capability of optical fiber, but also can ensure the normal operation of other main network nodes after any node or cable fails. The reliability of communication under complex conditions underground is guaranteed. To ensure that personnel do not enter the dangerous area inside the mining site, multiple equipment transmit data through a wireless network, and multiple mining sites and multiple equipment are linked and coordinated. While improving work efficiency, it also reduces the risk of injury to mining employees.

[0040] Reference Figures 1 to 3As shown, it can be understood that multiple stopes 100 are grouped into a one-step stope and a two-step stope, multiple one-step stopes are aligned in the vertical direction, multiple two-step stopes are aligned in the vertical direction, the one-step stope and the two-step stope are arranged at intervals, and the one-step stope is mined first and then the two-step stope. When the one-step stope is mined, the ore body in the two-step stope plays a supporting role to prevent the top and sides of the one-step stope from collapsing. After the one-step stope is filled, the two-step stope is mined. At this time, the filling in the one-step stope plays a supporting role to prevent the top and sides of the two-step stope from collapsing. This mining method can mine the ore body as much as possible and improve the recovery rate of the ore body.

[0041] Reference Figures 1 to 3 As shown, it can be understood that the mining sequence of the first-step stope is from top to bottom, and the mining sequence of the second-step stope is from top to bottom. The mining sequence of top-down mining is conducive to reducing the time spent on excavation. Since no top pillar is set between the stopes 100 connected up and down, the transportation tunnel 500 and the receiving tunnel 300 set at the bottom of the upper mine can be used for ventilation by the stope 100 below. It can effectively improve the mining efficiency.

[0042] Reference Figures 1 to 3 As shown, it can be understood that the mining starts from the lower center position in the stope 100 toward the two wings, so that the distribution of the parts blasted at the same time forms an upward arch, so as to improve the stability of the ore body and reduce the collapse and instability of the surrounding rock above.

[0043] Reference Figures 1 to 3 As shown, it can be understood that after the perforation blasting step, the stope 100 is ventilated from bottom to top. It is foreseeable that in the mining and cutting step, a skylight is cut to ventilate the stope 100, and during ventilation, the air flows through the middle section along the vein transport tunnel 500, the blasted working surface inside the stope 100, and the transport tunnel 500 set at the bottom of the stope 100 above. The use of the exhaust method from bottom to top can effectively and quickly discharge dust and prevent dust from accumulating under the action of gravity. After the ventilation is completed, the mining step is carried out.

[0044] Reference Figures 1 to 3As shown, it can be understood that the transport tunnel 500 includes a through-vein ore-exiting transport tunnel 510, a chute 520, a middle-section along-vein transport tunnel 530, and a through-vein intermediate transport tunnel 540. The middle-section along-vein transport tunnel 530 is connected to the ground outlet to transport ore to the ground. The middle-section along-vein transport tunnel 530 is connected to the receiving tunnel 300 through the through-vein ore-exiting transport tunnel 510. Multiple through-vein ore-exiting transport tunnels 510 can be set to increase the speed of transporting ore in the receiving tunnel 300 to the middle-section along-vein transport tunnel 530. The through-vein ore-exiting transport tunnel 510 is also used as a ventilation channel for the adjacent stope 100 below. The chute 520 is vertically arranged, and the inclination direction of the ore body should be toward the chute 520. The lower end of the chute 520 is connected to the middle-section along-vein transport tunnel 530. The through-vein intermediate transport tunnel 540 is used to connect the segmented rock drilling tunnel 200 and the chute 520. The function of the chute 520 is to transport ore downward to the middle section along-vein transport tunnel 530 to improve the efficiency of transportation. The middle section along-vein transport tunnel 530, the through-vein ore-exit transport tunnel 510 and the receiving tunnel 300 are located at the same horizontal plane to improve the efficiency of transporting ore. The through-vein ore-exit transport tunnel 510 and the through-vein intermediate transport tunnel 540 can also provide a passage for the intelligent rock drilling trolley and the intelligent charging trolley entering and exiting the segmented rock drilling tunnel 200 to enter and leave the stope 100.

[0045] Reference Figures 1 to 3 As shown, it can be understood that there are multiple vein-penetrating intermediate transport tunnels 540, and adjacent vein-penetrating intermediate transport tunnels 540 are connected by segmented transport tunnels 900. The segmented transport tunnels 900 connect the various stopes 100 in the horizontal direction, so as to facilitate the transfer of equipment such as intelligent rock drilling trolleys, intelligent charging trolleys and intelligent shovel loaders to the next stope 100 to be mined after the stope 100 is mined. In the filling step, retaining walls are set in the segmented transport tunnels 900 and the vein-penetrating ore-exiting transport tunnels 510 to block tailings and waste rocks, so that the tailings and waste rocks can effectively fill the stope 100 after mining, and will not enter the adjacent stope 100.

[0046] Reference Figures 1 to 3 As shown, it can be understood that the pre-support step of the mine roof also includes installing short anchor rods to protect the roof or installing short anchor rods and anchor nets for joint support at unstable places of the ore body. Selecting short anchor rods or short anchor rods and anchor nets for joint support according to the actual strength of the ore body can effectively prevent the surrounding rock from collapsing after blasting.

[0047] Reference Figures 1 to 3 As shown, it can be understood that the perforation blasting step also includes drilling medium-depth holes 800 distributed in a fan shape upward in the mining tunnel 300. Figure 1As shown, under the action of gravity, most of the ore fragments 101 generated after blasting will be concentrated in the receiving tunnel 300, so the fan-shaped medium-depth holes 800 are used to form a funnel shape above the receiving tunnel 300 to receive the ore falling from above, so that the receiving tunnel 300 can receive as much falling ore as possible, which can effectively improve the efficiency of transporting ore.

[0048] Reference Figures 1 to 3 As shown, it can be understood that in the perforation blasting step, the medium-depth holes 800 are divided into multiple rows at equal intervals along the extension direction of the ore body, the diameter of the medium-depth holes 800 is 120 mm, the spacing between each row of medium-depth holes 800 is 3.2 m, and 2 to 4 rows of medium-depth holes 800 are blasted each time, that is, the step distance of each mining is 6 to 10 m.

[0049] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A method for continuous mining and filling in thick ore body mining environment reconstruction, characterized in that: include: Mining and cutting: the ore body is divided into a plurality of mining areas (100) along the direction of the ore body, a segmented rock drilling tunnel (200) extending along the direction of the ore body is opened in the mining area (100), the segmented rock drilling tunnel (200) divides the mining area (100) into an upper mining section (110) and a lower mining section (120), a receiving tunnel (300) is arranged below the lower mining section (120); a top ventilation and filling tunnel (400) is arranged above the upper mining section (110), and a transportation tunnel (500) connected to the segmented rock drilling tunnel (200) is opened outside the mining area (100); Pre-support of the mining area roof: a short through-vein tunnel (600) is horizontally opened in the mining area (100) and is vertically connected to the segmented rock drilling tunnel (200); an anchor cable support through-vein tunnel (700) is horizontally opened above the short through-vein tunnel (600) and is vertically connected to the top ventilation and filling tunnel (400); and multiple rows of prestressed anchor cables (710) are downwardly arranged in the anchor cable support through-vein tunnel (700); Perforation blasting: drilling a plurality of medium-depth holes (800) around the segmented rock drilling tunnel (200) and the top ventilation filling tunnel (400) as the center, installing explosives in the medium-depth holes (800) and blasting in batches; Ore unloading: transporting the blasted ore to the surface through the transport tunnel (500); Filling: Filling the space after mining in the stope (100).

2. The method for segmented continuous mining and filling mining for reconstructing the mining environment of thick and large ore bodies according to claim 1 is characterized by: Fixed wireless communication base stations and mobile wireless communication base stations are provided in the segmented rock drilling tunnel (200), the receiving mine tunnel (300) and the top ventilation and filling tunnel (400). In the perforation blasting step, an intelligent rock drilling trolley with a remote wireless control function is used for rock drilling, and a remote-controlled charging trolley with a remote wireless control function is used for loading explosives. In the ore-exporting step, a remote-controlled shovel loader with a remote wireless control function is used for transportation, so as to realize unmanned automated intelligent mining.

3. The segmented continuous mining and filling mining method for reconstructing the mining environment of a thick and large ore body according to claim 1 is characterized by: The multiple stopes (100) are grouped into a one-step stope and a two-step stope, the multiple one-step stopes are aligned in the vertical direction, the multiple two-step stopes are aligned in the vertical direction, the one-step stopes are spaced apart from the two-step stopes, and the one-step stopes are mined first and then the two-step stopes.

4. The method for segmented continuous mining and filling mining for reconstructing the mining environment of thick and large ore bodies according to claim 3 is characterized by: The mining sequence of the one-step stope is from top to bottom, and the mining sequence of the two-step stope is from top to bottom.

5. The method for segmented continuous mining and filling mining for reconstructing the mining environment of thick and large ore bodies according to claim 4 is characterized in that: In the stope (100), mining is carried out starting from the lower center position toward the two wings.

6. The method for segmented continuous mining and filling mining for reconstructing the mining environment of thick and large ore bodies according to claim 1 is characterized by: After the perforation blasting step, the stope (100) is ventilated from bottom to top.

7. The segmented continuous mining and filling mining method for reconstructing the mining environment of a thick and large ore body according to claim 1 is characterized by: The transport tunnel (500) comprises a through-vein ore-exiting transport tunnel (510), a chute (520), a middle-section along-vein transport tunnel (530), and a through-vein intermediate transport tunnel (540). The middle-section along-vein transport tunnel (530) is connected to a ground outlet to transport ore to the ground. The middle-section along-vein transport tunnel (530) is connected to the receiving tunnel (300) through the through-vein ore-exiting transport tunnel (510). The chute (520) is vertically arranged. The lower end of the chute (520) is connected to the middle-section along-vein transport tunnel (530). The through-vein intermediate transport tunnel (540) is used to connect the segmented rock drilling tunnel (200) and the chute (520).

8. The segmented continuous mining and filling mining method for reconstructing the mining environment of a thick and large ore body according to claim 7 is characterized by: There are a plurality of the vein-penetrating intermediate transport lanes (540), and adjacent vein-penetrating intermediate transport lanes (540) are connected via a segmented transport lane (900).

9. The segmented continuous mining and filling mining method for reconstructing the mining environment of thick and large ore bodies according to claim 1 is characterized by: The mining area roof pre-support step also includes installing short anchor rods to protect the roof or installing short anchor rods and anchor nets for combined support at unstable locations of the ore body.

10. The segmented continuous mining and filling mining method for reconstructing the mining environment of thick and large ore bodies according to claim 1 is characterized by: The perforation blasting step also includes drilling the medium-depth holes (800) distributed in a fan shape upwards in the receiving mine tunnel (300).

Images