CN111677509A - Cooperative mining method for inclined thick and large ore body - Google Patents
Cooperative mining method for inclined thick and large ore body Download PDFInfo
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- CN111677509A CN111677509A CN202010498128.0A CN202010498128A CN111677509A CN 111677509 A CN111677509 A CN 111677509A CN 202010498128 A CN202010498128 A CN 202010498128A CN 111677509 A CN111677509 A CN 111677509A
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/14—Lining predominantly with metal
- E21D11/15—Plate linings; Laggings, i.e. linings designed for holding back formation material or for transmitting the load to main supporting members
- E21D11/152—Laggings made of grids or nettings
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0006—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by the bolt material
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F13/00—Transport specially adapted to underground conditions
- E21F13/06—Transport of mined material at or adjacent to the working face
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F15/00—Methods or devices for placing filling-up materials in underground workings
Abstract
The invention discloses a collaborative mining method for an inclined thick and large ore body. Dividing an ore body into panels along the moving direction, reserving panel space columns between the panels, and firstly mining the panels and then mining the panel space columns; the mining area is divided into a one-step stope and a two-step stope which are arranged along the trend for carrying out stoping in two steps, the one-step stope and the two-step stope adopt large-diameter deep hole blasting ore caving, the caving ore is shoveled out by a shoveling and transporting machine through a segmented transportation roadway, a transportation connecting roadway and an ore removal roadway, and a goaf is filled later; the panel interval columns are divided into odd-numbered panel interval columns and even-numbered panel interval columns, the even-numbered panel interval columns are adopted firstly, then the odd-numbered panel interval columns are adopted, the even-numbered panel interval columns are all mined, the odd-numbered panel interval columns are mined one by one, and the panel interval columns are mined in a segmented mode by medium-length holes from top to bottom. The invention has the advantages of large production capacity of a stope, high efficiency, high ore recovery rate, small amount of mining-preparation cutting engineering, high cooperative utilization rate and the like.
Description
Technical Field
The invention belongs to the field of underground mining, and particularly relates to a collaborative mining method for an inclined thick and large ore body.
Background
The large-diameter deep hole Mining Method is an efficient and economic Mining Method which introduces an open-pit deep hole bench blasting process to underground Mining, and a typical Mining Method is a Vertical deep hole spherical explosive charge ore breaking stage chamber Method (namely Vertical craterrethread Mining Method). The VCR method is a high-efficiency, safe and economic stage open stoping method which takes major process characteristics of large-diameter vertical deep-hole spherical explosive charge ore breakage as main process characteristics, and generally adopts two-step stoping and subsequent filling to control the ground pressure. The method comprehensively applies the technologies and processes of deep hole rock drilling equipment, C.W. livingston spherical explosive package blasting funnel theory, large trackless ore removal equipment and the like. The technological process features that a drilling chamber (or tunnel) for drilling is dug horizontally in the upper part of ore block, a large-diameter down-hole drilling machine is used to drill downward deep hole until the top plate of ore-discharging chamber in the lower part or the depth of ore-discharging line is designed, and then a spherical explosive bag is used to form an inverted blasting funnel with the lower free surface of blast hole as the free blasting surface, and the ore is dropped from bottom to top until it passes through the drilling chamber in the upper part and the ore is discharged from the ore-discharging tunnel in the lower part. The method is suitable for mining ore and ore bodies with more than medium and stable steep inclination and more than medium thickness of surrounding rock, the interface of the ore and rock is required to be regular, the ore bodies are regular, the quantity of included stones is small, and otherwise dilution and loss of a stope are serious. The first formal application of the VCR method was in the northern mine of cupro canada in 1973 for staged room mining. In 1973, the first VCR process scale test was completed by blasting a vertical blast hole with a downward diameter of 165mm and a spherical cartridge in a column of Livack copper mine (Levack Nickel copperMine) from International Nickel mine, followed by production promotion in countries such as the United states, Spain, Sweden, Australia, etc. With the continuous deepening of the theory and technical understanding of the large-diameter deep hole blasting, two new blasting processes of VCR method slot-subsection lateral ore caving and VCR slot-stage full-hole lateral blasting are developed. The major diameter deep hole mining method is an efficient mining method, and the method has the main advantages of less stope mining quasi-cutting engineering amount, short stope preparation time, more mining and cutting engineering construction by-product ore amount, and large stope production capacity due to the adoption of major diameter deep hole ore breaking.
At present, a large-diameter deep hole mining method is mainly applied to ore body stoping of a steeply inclined thick and large ore body and a slowly inclined extremely thick and large ore body, and is less applied to the inclined thick and large ore body because of the restriction of the inclination angle and the thickness of the ore body, a large amount of mining preparation projects need to be arranged, and the economic and reasonable arrangement of the mining preparation projects is difficult to realize; meanwhile, the recovery difficulty of the ore pillars is high, and efficient and cooperative recovery of the ore pillars is difficult to realize. Therefore, the invention provides a collaborative mining method for an inclined thick ore body, and aims to solve the problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a collaborative mining method for an inclined thick and large ore body, which is characterized by comprising the following steps:
(1) dividing an ore body into panels along the moving direction, reserving panel space columns between the panels, and firstly mining the panels and then mining the panel space columns; the panel area is divided into a one-step mining field and a two-step mining field which are arranged along the trend to carry out mining in two steps; the disc space columns are sequentially numbered and divided into odd-numbered disc space columns and even-numbered disc space columns;
(2) arranging segmented transportation lanes in the surrounding rock of the lower tray, arranging ore removal lanes at the bottom of each stope, communicating the ore removal lanes with the segmented transportation lanes by adopting transportation communication lanes, and enabling the positions of the transportation communication lanes to correspond to the positions of the inter-panel pillars one by one; constructing a sectional rock drilling tunnel in an odd number of panel pillars, wherein one end of the sectional rock drilling tunnel is communicated with an ore removal tunnel at the bottom of a certain stope at the upper part, the other end of the sectional rock drilling tunnel is constructed to the junction of hanging wall rock and the stope at one step, excavating a rock drilling chamber at the top of the stope at two sides to form an operation space for large-diameter deep hole rock drilling and charging blasting of the stope at one step, and arranging a cutting drift and a cutting raise at one side of the stope at one step, which is close to an even number of panel pillars; constructing an inclined sectional rock drilling tunnel in the interval columns of the even-numbered panels, wherein one end of the sectional rock drilling tunnel is communicated with an ore removal tunnel at the bottom of a certain stope at the upper part, the other end of the sectional rock drilling tunnel is constructed to the junction of the upper wall rock and the upper wall rock of the stope in the second step, and excavating a rock drilling chamber at the top of the stope in the second step towards two sides to form an operation space for large-diameter deep-hole rock drilling and charging blasting of the stope in the second step, and arranging a cutting drift and a cutting raise on one side of the stope in the second step, which is close to;
(3) the mining process of the one-step stope and the two-step stope is similar, firstly, a downward large-diameter deep hole is constructed in the drilling chamber, a cutting raise is used as a free surface to form a cutting groove, then, the cutting groove is used as a free surface to retreat and collapse ores, and the collapsed ores are shoveled out by a scraper through an ore outlet roadway at the bottom of the stope; after the stope is completely stoped in the first step, filling by using a high-strength cemented filling body, and after the stope is completely stoped in the second step, filling by using a lower-strength cemented filling body;
(4) after stoping and filling of stopes in the panel areas are finished, stoping panel intervals, firstly adopting even-numbered panel intervals, then adopting odd-numbered panel intervals, stoping all the even-numbered panel intervals, and stoping one by one for the odd-numbered panel intervals; and (3) carrying out back mining on the pillars between the panels from top to bottom in a segmented manner, carrying out back mining on the lower segments after the back mining of the upper segments is finished, constructing upward sector-shaped medium-length holes in the segmented rock drilling roadway during the segmented back mining, carrying out backward back mining from the direction of the upper disk of the ore body to the direction of the lower disk, and carrying out ore removal on the end part of the working face of the segmented rock drilling roadway by using a scraper.
Preferably, the panel is 50-60m long along the trend of the ore body, the width of the one-step stope is 12-16m, the width of the two-step stope is 16-20m, and the mining rock stability is high when the mining rock stability is good or the ground stress is low, and the mining rock stability is relatively poor or the ground stress is high; the width of the disc interval column is 14-16m, and the width is small when the stability of the ore rock is good or the ground stress is small, and is large when the stability of the ore rock is relatively poor or the ground stress is large.
Further, the ore removal roadway at the bottom of the stope communicated with the sectional rock drilling roadway is comprehensively determined according to the inclination angle of the ore body and the stope span, and the length of the sectional rock drilling roadway is preferably shortened on the premise that the sectional rock drilling roadway is arranged in a downhill mode and the gradient of the sectional rock drilling roadway is smaller than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment; the gradient of the transportation connecting channel is less than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment.
Further, when the large-diameter deep hole is blasted, 2-4 rows of blast holes are blasted at one time by taking the cutting groove as a free surface and performing full-hole lateral ore caving.
Preferably, the 28-day uniaxial compressive strength of the high-strength cemented filling body is greater than or equal to 3.0-3.5MPa, and the 28-day uniaxial compressive strength of the lower-strength cemented filling body is greater than or equal to 1.0-1.5 MPa.
Preferably, the aperture of the large-diameter deep hole is 110-165mm, the row spacing of the blast holes is 2.0-3.0m, the hole spacing of the blast holes is 2.2-3.5m, and the construction of the large-diameter deep hole is 0.5-1.0m deeper than the designed recovery range.
Furthermore, strip-shaped ore pillars are reserved in the construction process of the drilling chamber to control the exposed area of the rock mass of the top plate, and the top plate of the drilling chamber is supported in a combined supporting mode of anchor cables, anchor rods, hanging reinforcing mesh and spraying.
Furthermore, when ore is removed from a stope, after each blast in the early stage, the diesel carry scraper is used for removing ore from the end part of the ore removal roadway, the ore removal amount is about 1/3 of the ore removal amount of the current ore caving, and after all the ore in the stope is blasted, the remote control carry scraper is used for entering the stope for removing a large amount of ore.
Advantageous effects
Compared with the prior art and the method, the collaborative mining method for the inclined thick and large ore body provided by the invention has the following beneficial effects:
(1) the production capacity of the stope is high, and the production efficiency is high. The stope adopts large-diameter deep hole blasting ore caving, the ore caving is intensively removed in the bottom structure, and the stope has high production capacity and high efficiency.
(2) The panel interval columns and the panel areas are mined cooperatively in sequence, so that precious mineral resources can be recovered to the maximum extent, and the recovery rate of ores is high.
(3) The mining and accurate mining engineering of the panel area and the mining and accurate mining of the panel interval columns are taken as a system to be considered and utilized together, the amount of mining and accurate cutting engineering is small, and the cooperative utilization rate is high.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1 is a schematic view of the panel arrangement of the present invention;
FIG. 2 is a front view (A-A) of a stope preparation project layout according to one step of the present invention;
FIG. 3 is a plan view of a stope preparation project layout in one step of the present invention (B-B);
FIG. 4 is a two-step stope preparation project layout elevation view (A-A) of the present invention;
FIG. 5 is a plan view (C-C) of a two-step stope preparation project layout of the present invention;
FIG. 6 is a front elevation view (A-A) of a stope in accordance with a step of the present invention;
fig. 7 is a front view (a-a) of the two-step stope of the present invention.
In the figure: 1-sectional transportation lane; 2-transportation communication channel; 3-ore removal lane; 4-sectional rock drilling roadway; 5-a rock drilling chamber; 6-high strength cemented filling; 7-large diameter deep hole; 8-lower strength cementitious filling.
Detailed Description
The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
As shown in figures 1 to 7, a certain ore body is an inclined ore body with a large thickness, the average inclination angle is 35 degrees, the average thickness is 30m, the ore body has the elevation of 300-500m below the earth surface, and the stability of the ore body and the surrounding rock is of a stable-extremely stable type. The mining method for the cooperative mining of the inclined thick and large ore body provided by the invention comprises the following steps:
(1) dividing an ore body into panels along the moving direction, reserving panel space columns between the panels, and firstly mining the panels and then mining the panel space columns; the panel area is divided into a one-step mining field and a two-step mining field which are arranged along the trend to carry out mining in two steps; the disc space columns are sequentially numbered and divided into odd-numbered disc space columns and even-numbered disc space columns. The panel area is 60m long along the ore body, the stope width in one step is 16m, and the stope width in the two steps is 18-20 m.
(2) Arranging segmented transportation lanes 1 in the surrounding rock of the lower tray, arranging ore removal lanes 3 at the bottom of each stope, communicating the ore removal lanes 3 with the segmented transportation lanes 1 by adopting transportation communication lanes 2, and enabling the positions of the transportation communication lanes 2 to correspond to the positions of the inter-panel pillars one by one; constructing 4 sectional rock drilling tunnels in odd-numbered panel pillars, wherein one end of each 4 sectional rock drilling tunnel is communicated with an ore removal tunnel 3 at the bottom of a certain stope at the upper part, the other end of each 4 sectional rock drilling tunnel is constructed to the junction of the upper wall rocks of the stope in one step, and a rock drilling chamber 5 is excavated at the top of the stope in one step towards two sides to form an operation space for large-diameter deep hole 7 rock drilling and explosive blasting of the stope in one step, and a cutting drift and a cutting raise are arranged on one side, close to even-numbered panel pillars, of the stope in one step; constructing 4 inclined sectional rock drilling tunnels in the even number panel pillars, communicating one end of each 4 tunnel with an ore removal tunnel 3 at the bottom of a certain stope at the upper part, constructing the other end to the upper wall rock connection part of the two-step stope, excavating a rock drilling chamber 5 at the top of the two-step stope towards two sides to form an operation space for large-diameter deep hole 7 rock drilling and explosive blasting of the two-step stope, and arranging a cutting drift and a cutting raise on one side of the two-step stope close to the odd number panel pillars. The ore removal roadway 3 at the bottom of the stope, communicated with the sectional rock drilling roadway 4, is comprehensively determined according to the inclination angle of an ore body and the span of the stope, and the length of the sectional rock drilling roadway 4 is preferably shortened on the premise that the sectional rock drilling roadway 4 is arranged in a downhill mode and the gradient of the sectional rock drilling roadway is smaller than or equal to the maximum climbing capacity of rock drilling equipment and ore removal equipment; the gradient of the transportation connecting channel 2 is less than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment.
Reserving strip-shaped ore pillars in the construction process of the drilling chamber 5 to control the exposed area of a top plate rock mass, and supporting the top plate of the drilling chamber 5 by adopting a combined supporting mode of anchor cables, anchor rods, hanging reinforcing mesh and spraying; preferably, the length of the anchor cable is 12-15m, and the mesh degree of the anchor cable support is 3.0m multiplied by 3.0m-4.5m multiplied by 4.5 m; the anchor rod is a resin anchor rod, the length of the anchor rod is 2.0-2.5m, and the support mesh degree of the anchor rod is 1.0m multiplied by 1.0m-1.5m multiplied by 1.5 m; the reinforcing mesh is made of reinforcing steel bars with the diameter of 8-12mm, and the mesh size is 100mm multiplied by 100 mm.
The diameter of the large-diameter deep hole 7 is 165mm, the row spacing of the blast holes is 3.0m, the hole spacing of the blast holes is 3.5m, and the construction of the large-diameter deep hole 7 is 0.8m deeper than the designed stoping range.
(3) The mining process of the one-step stope and the two-step stope is similar, firstly, a downward large-diameter deep hole 7 is constructed in a rock drilling chamber 5, a cutting raise is used as a free surface to form a cutting groove, then, the cutting groove is used as a free surface to retreat and collapse ores, and the collapsed ores are shoveled out by a shoveling and transporting machine through an ore outlet roadway 3 at the bottom of the stope; after the stope in the first step is finished, the high-strength cemented filling body 6 is used for filling, and after the stope in the second step is finished, the lower-strength cemented filling body 8 is used for filling.
And when the large-diameter deep hole 7 is blasted, the cutting groove is used as a free surface, the full-hole lateral ore caving is carried out, and 2-4 rows of blast holes are blasted at one time. The stope is used for ore removal with the length of 4m3And the scraper adopts a diesel scraper to remove ores from the end part of the ore removal lane 3 after each blasting in the earlier stage, the ore removal amount is about 1/3 of the ore removal amount of the current ore caving amount, and a remote control scraper is adopted to enter a stope for large ore removal after all ores in the stope are blasted. And filling the stope after the stope is mined, wherein the 28-day uniaxial compressive strength of the high-strength cemented filling body 6 of the stope in one step is more than or equal to 3.0-3.5MPa, and the 28-day uniaxial compressive strength of the lower-strength cemented filling body 8 of the stope in the second step is more than or equal to 1.0-1.5 MPa.
(4) After stoping and filling of stopes in the panel areas are finished, stoping panel intervals, firstly adopting even-numbered panel intervals, then adopting odd-numbered panel intervals, stoping all the even-numbered panel intervals, and stoping one by one for the odd-numbered panel intervals; and (3) carrying out back mining on the interval columns of the panel from top to bottom in a segmented mode, carrying out back mining on the lower segments after the back mining of the upper segments is finished, constructing upward sector-shaped medium-length holes in the segmented rock drilling roadway 4 during the segmented back mining, carrying out backward back mining from the direction of the upper plate of the ore body to the direction of the lower plate, and discharging the caving ore from the end of the working face of the segmented rock drilling roadway 4 by using a scraper.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (9)
1. A collaborative mining method for inclined thick ore bodies is characterized by comprising the following steps:
(1) dividing an ore body into panels along the moving direction, reserving panel space columns between the panels, and firstly mining the panels and then mining the panel space columns; the panel area is divided into a one-step mining field and a two-step mining field which are arranged along the trend to carry out mining in two steps; the disc space columns are sequentially numbered and divided into odd-numbered disc space columns and even-numbered disc space columns;
(2) arranging segmented transportation lanes in the surrounding rock of the lower tray, arranging ore removal lanes at the bottom of each stope, communicating the ore removal lanes with the segmented transportation lanes by adopting transportation communication lanes, and enabling the positions of the transportation communication lanes to correspond to the positions of the inter-panel pillars one by one; constructing a sectional rock drilling tunnel in an odd number of panel pillars, wherein one end of the sectional rock drilling tunnel is communicated with an ore removal tunnel at the bottom of a certain stope at the upper part, the other end of the sectional rock drilling tunnel is constructed to the junction of hanging wall rock and the stope at one step, excavating a rock drilling chamber at the top of the stope at two sides to form an operation space for large-diameter deep hole rock drilling and charging blasting of the stope at one step, and arranging a cutting drift and a cutting raise at one side of the stope at one step, which is close to an even number of panel pillars; constructing an inclined sectional rock drilling tunnel in the interval columns of the even-numbered panels, wherein one end of the sectional rock drilling tunnel is communicated with an ore removal tunnel at the bottom of a certain stope at the upper part, the other end of the sectional rock drilling tunnel is constructed to the junction of the upper wall rock and the upper wall rock of the stope in the second step, and excavating a rock drilling chamber at the top of the stope in the second step towards two sides to form an operation space for large-diameter deep-hole rock drilling and charging blasting of the stope in the second step, and arranging a cutting drift and a cutting raise on one side of the stope in the second step, which is close to;
(3) the mining process of the one-step stope and the two-step stope is similar, firstly, a downward large-diameter deep hole is constructed in the drilling chamber, a cutting raise is used as a free surface to form a cutting groove, then, the cutting groove is used as a free surface to retreat and collapse ores, and the collapsed ores are shoveled out by a scraper through an ore outlet roadway at the bottom of the stope; after the stope is completely stoped in the first step, filling by using a high-strength cemented filling body, and after the stope is completely stoped in the second step, filling by using a lower-strength cemented filling body;
(4) after stoping and filling of stopes in the panel areas are finished, stoping panel intervals, firstly adopting even-numbered panel intervals, then adopting odd-numbered panel intervals, stoping all the even-numbered panel intervals, and stoping one by one for the odd-numbered panel intervals; and (3) carrying out back mining on the pillars between the panels from top to bottom in a segmented manner, carrying out back mining on the lower segments after the back mining of the upper segments is finished, constructing upward sector-shaped medium-length holes in the segmented rock drilling roadway during the segmented back mining, carrying out backward back mining from the direction of the upper disk of the ore body to the direction of the lower disk, and carrying out ore removal on the end part of the working face of the segmented rock drilling roadway by using a scraper.
2. The collaborative mining method for the inclined thick and large ore body according to claim 1, characterized in that: the ore removal roadway at the bottom of the stope communicated with the sectional rock drilling roadway is comprehensively determined according to the inclination angle of the ore body and the stope span, and the length of the sectional rock drilling roadway is preferably shortened on the premise that the sectional rock drilling roadway is arranged in a downhill mode and the gradient of the sectional rock drilling roadway is smaller than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment; the gradient of the transportation connecting channel is less than or equal to the maximum climbing capacity of the rock drilling equipment and the ore removal equipment.
3. The collaborative mining method for the inclined thick and large ore body according to claim 1, characterized in that: the panel area is 50-60m long along the trend of the ore body, the width of the first-step stope is 12-16m, the width of the second-step stope is 16-20m, when the stability of ore rocks is good or the ground stress is small, the large value is taken, and when the stability of the ore rocks is relatively poor or the ground stress is large, the small value is taken; the width of the disc interval column is 14-16m, and the width is small when the stability of the ore rock is good or the ground stress is small, and is large when the stability of the ore rock is relatively poor or the ground stress is large.
4. The collaborative mining method for the inclined thick and large ore body according to claim 1, characterized in that: and during the large-diameter deep hole blasting, the cutting groove is used as a free surface, the full-hole lateral ore caving is carried out, and 2-4 rows of blast holes are blasted at one time.
5. The collaborative mining method for the inclined thick and large ore body according to claim 1, characterized in that: the 28-day uniaxial compressive strength of the high-strength cemented filling body is greater than or equal to 3.0-3.5MPa, and the 28-day uniaxial compressive strength of the lower-strength cemented filling body is greater than or equal to 1.0-1.5 MPa.
6. The collaborative mining method for the inclined thick and large ore body according to claim 1 or 4, characterized in that: the aperture of the large-diameter deep hole is 110-165mm, the row spacing of the blast holes is 2.0-3.0m, and the hole spacing of the blast holes is 2.2-3.5 m.
7. The collaborative mining method for the inclined thick and large ore body according to claim 1, characterized in that: when the large-diameter deep hole is constructed, the designed stoping range is 0.5-1.0m deeper.
8. The collaborative mining method for the inclined thick and large ore body according to claim 1, characterized in that: and in the construction process of the drilling chamber, a roof of the drilling chamber is supported by adopting a combined supporting mode of an anchor rope, an anchor rod, a hanging reinforcing mesh and guniting.
9. The collaborative mining method for the inclined thick and large ore body according to claim 1, characterized in that: when ore is removed from a stope, after each blast in the early stage, the diesel carry scraper is used for removing ore from the end part of the ore removal lane, the ore removal amount is about 1/3 of the ore removal amount of the current ore caving, and after all the ores in the stope are blasted, the remote control carry scraper is used for entering the stope for removing a large amount of ore.
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| CN113202553A (en) * | 2021-05-28 | 2021-08-03 | 鞍钢集团矿业有限公司 | Method for cementing and supporting roof pillar of ore room by upward filling mining method |
| CN113482611A (en) * | 2021-06-30 | 2021-10-08 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Mining method for alternately ascending and continuously stoping thick and large broken ore bodies |
| CN113775374A (en) * | 2021-07-06 | 2021-12-10 | 山东黄金矿业(莱州)有限公司三山岛金矿 | Interactive upward medium-length hole subsequent filling mining method |
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