CN117967310A - Reserved compensation space horizontal lateral continuous mining method - Google Patents
Reserved compensation space horizontal lateral continuous mining method Download PDFInfo
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- CN117967310A CN117967310A CN202410362081.3A CN202410362081A CN117967310A CN 117967310 A CN117967310 A CN 117967310A CN 202410362081 A CN202410362081 A CN 202410362081A CN 117967310 A CN117967310 A CN 117967310A
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- 238000005065 mining Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000005520 cutting process Methods 0.000 claims abstract description 72
- 238000005422 blasting Methods 0.000 claims abstract description 58
- 210000003462 vein Anatomy 0.000 claims abstract description 36
- 239000011435 rock Substances 0.000 claims abstract description 9
- 238000002955 isolation Methods 0.000 claims description 22
- 238000012546 transfer Methods 0.000 claims description 8
- 230000001680 brushing effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 10
- 238000009423 ventilation Methods 0.000 abstract description 10
- 238000010276 construction Methods 0.000 abstract description 8
- 238000009826 distribution Methods 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000012360 testing method Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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Abstract
The invention provides a reserved compensation space horizontal side continuous mining method, which relates to the technical field of mining, and comprises the following steps: an intra-pulse cutting through pulse is arranged in the ore block, a square compensation chamber is arranged in the intra-pulse cutting through pulse, and the ore block is divided into a plurality of stopes around the square compensation chamber; filling ore pillars are formed in the intra-pulse cutting through veins at two ends of the square compensation chamber, and compensation spaces are formed between two sides of the filling ore pillars and two side rock walls of the intra-pulse cutting through veins; and each stope in the ore block is subjected to diagonal type split blasting stoping, wherein the stope with diagonal type distribution is filled after blasting stoping, then the stope with diagonal type distribution is subjected to blasting stoping and filling, and a primary ore body retaining wall is formed between each stope after blasting and an intra-pulse cutting edge pulse. The mining method can effectively reduce the ore body ore falling difficulty, and has the advantages of good ventilation effect, high ore discharging efficiency, convenient operation, construction cost reduction and the like.
Description
Technical Field
The invention relates to the technical field of mining, in particular to a reserved compensation space horizontal lateral continuous mining method.
Background
The prior art discloses a method for mining broken ore bodies, which comprises the following steps: tunneling the vertical ore body to form a first approach; a baffle piece is arranged on one side of the first access close to the area to be mined; filling the first access to form a filling layer; removing the barrier to form a compensation space between the filling layer and the section to be mined; wall blasting of the to-be-mined area is performed in the compensation space to form a second access in the to-be-mined area.
In addition, the prior art also discloses a horizontal medium-length hole lateral continuous mining method of the gently inclined ore body, which comprises the following steps: dividing and layering ore bodies in the vertical direction; dividing ore blocks along the trend direction of ore bodies in the layering; dividing stopes in ore blocks; the veins are arranged along the direction of the trend of the ore body; mining the roadway by using the ore blocks along the vein; constructing a horizontal hole parallel to the trend of the compensation space by utilizing the compensation space formed by the mining roadway, and carrying out lateral continuous ore caving on the first stope; reserving a filling body isolation device for filling after the stope of the first stope is finished; constructing a horizontal hole parallel to the trend of the compensation space by utilizing the compensation space formed by the reserved filling body isolating device, and carrying out lateral continuous ore caving on the adjacent stopes; until the ore blocks are completely extracted.
However, in the prior art, the adjacent stopes are mined by using the compensating space formed by the isolating device in the filling body. But the accurate engineering arrangement form in the actual ore body is lacking, the specific stoping scheme of the adjacent stope is not clear, and the operability of the prior art is poor, and the practicability is lacking.
Disclosure of Invention
The invention aims to provide a horizontal lateral continuous mining method with a reserved compensation space, which can effectively reduce the ore body ore dropping difficulty and has the advantages of good ventilation effect, high ore discharging efficiency, convenient operation, reduced construction cost, strong practicability and the like.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the invention provides a reserved compensation space horizontal lateral continuous mining method, which comprises the following steps:
Dividing: dividing and layering ore bodies along the vertical direction, and dividing ore blocks along the trend direction of the ore bodies in each layering; an intra-pulse cutting through pulse is arranged in the ore block, a square compensation chamber is arranged in the intra-pulse cutting through pulse, and a plurality of stopes are divided from the ore block around the square compensation chamber;
The compensation space presetting step: filling ore pillars are formed in the intra-pulse cutting through veins at two ends of the square compensation chamber, and compensation spaces are formed between two sides of the filling ore pillars and two side rock walls of the intra-pulse cutting through veins;
And (3) stoping and filling: and each stope in the ore block is subjected to diagonal type split blasting stope, wherein the stope with a pair of diagonal type distribution is filled after blasting stope, then the next pair of diagonal type distribution is subjected to blasting stope and filling, and a primary ore body retaining wall is formed between each stope and an intra-pulse cutting edge after blasting in each stope.
Further, the dividing step specifically includes:
dividing the ore body into stages, dividing the ore body into segments in each stage along the vertical direction, and dividing and layering in each segment;
Each extra-pulse subsection roadway is horizontally arranged along the running direction of the ore body, and enters the ore body from the extra-pulse subsection roadway through an extra-pulse layer-transfer linkage;
Setting the intra-pulse cutting edge pulse and a plurality of intra-pulse cutting through pulses, and dividing each layer of ore body into a plurality of ore blocks; the intra-pulse cutting edges are arranged in the ore body along the trend direction of the ore body; the intra-pulse cutting through pulse is arranged in the ore body perpendicular to the direction of the ore body.
Further, in adjacent said layering:
The intra-pulse cutting through pulses are staggered, the intra-pulse cutting along pulses are staggered, and the stopes are staggered.
Further, in the dividing step:
Dividing the ore blocks into four stopes around the square compensation chamber, wherein the four stopes are distributed diagonally.
Further, in the compensating space presetting step, the step of forming filling ore pillars in the intra-pulse cutting through veins at two ends of the square compensating chamber comprises the following steps:
installing compensation space isolation devices on two sides of the rock wall of the pulse cutting through process in the pulse;
Erecting filling retaining walls at two ends of the intra-pulse cutting through pulse and at the joint of the intra-pulse cutting through pulse and the square compensation chamber, and filling a space between the filling retaining walls and the compensation space isolation device;
And after the filling body is solidified, removing the filling retaining wall and the compensating space isolation device, and cutting through the vein in the vein to form a filling ore pillar.
Further, in the stoping and filling step:
after blasting stoping of the stope with the first pair of diagonally distributed in the ore blocks is finished, erecting a filling retaining wall at the joint of the square compensation chamber and the stope with the stope finish to form a hexagonal compensation chamber;
And erecting a filling retaining wall between the primary ore body retaining wall and the filling ore pillar, filling the stope after the stope is completed, and blasting and stoping the stope with the diagonal distribution on the other side after the filling body is solidified.
Further, in the stoping filling step, blasting stoping of each pair of diagonally distributed stopes includes:
constructing a near-horizontal medium-length hole from the intra-pulse cutting along the pulse to the stope in the ore block;
And each stope is uniformly blasted, a first blasted area is blasted by using the space formed by the compensation space isolation device and the square compensation chamber, the primary ore body retaining wall is not formed in the first blasted area, and a subsequent blasted area is blasted by using the space formed by the expansion brushing of the first blasted area and forms the primary ore body retaining wall.
Further, the depth of the compensation chamber extending into the stope along the direction of the ore body is the same as the width of the first blasting area.
Further, the width W of the first burst region is calculated by:
wherein:
Lambda is a loosening coefficient of 1.2-1.5; w is the space width formed by the compensating space isolating device.
Further, during the blasting of each stope in the direction of the ore body, the stope is blasted in a plurality of times:
after the primary blasting, using a remote control scraper to discharge ores, and enabling personnel to enter a stope; and during subsequent blasting, the remote control scraper is used for ore removal, and personnel do not enter a stope.
The reserved compensation space horizontal side continuous mining method provided by the invention has the following beneficial effects:
1. In the mining method, the square compensation chambers are arranged in the intra-pulse cutting through veins, and as the stopes in the ore blocks are distributed around the square compensation chambers, the square compensation chambers can provide larger blasting free surfaces and compensation spaces for primary blasting in the blasting stage, and particularly, the compensation spaces formed between the sides of the filling ore pillar and the intra-pulse cutting through vein side rock walls and the end compensation spaces provided by the square compensation chambers are utilized, so that the ore body ore dropping difficulty can be effectively reduced, the blasting effect is improved, and the mining production cost is reduced on the basis of greatly improving the production capacity;
2. In the stope stoping step in the ore blocks, the stability of the top plate is effectively controlled through the arrangement form of the stope due to the adoption of diagonal type split blasting stoping, so that the safety is higher;
3. The square compensation chamber can provide blasting free surfaces for two stopes at the same time, after blasting, diagonal ventilation and ore discharge channels can be formed in ore blocks, the ventilation effect is better, and the ore discharge efficiency is higher;
4. The stope blasting stoping is completed, the stope and the intra-pulse cutting edge can form an original ore body retaining wall, the original ore body retaining wall can be free from being filled, the span of the filling retaining wall is controlled, meanwhile, the construction difficulty and the working intensity of personnel are greatly reduced, the construction cost is reduced, and the effect of improving the construction efficiency is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view along the strike of a mine body in a method of continuous mining in the horizontal lateral direction of a head space provided by the invention;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
FIG. 3 is a plan view of the method of mining after stoping of the layered stope of FIG. 1;
FIG. 4 is a plan view of the method of mining after stoping of the layered stope of FIG. 1;
FIG. 5 is a plan view III of the method of mining after stoping of the layered stope of FIG. 1;
FIG. 6 is a plan view of the method of mining after stoping of the layered stope of FIG. 1;
FIG. 7 is a plan view of the method of mining after stoping of the layered stope of FIG. 1;
fig. 8 is a plan view six of the method of mining after stoping in the layered stope of fig. 1.
Icon: 1-segmenting; 2-layering; 3-extravenous segmented roadway; 4-extravenous layer-transfer association; 5-intra-pulse cutting edge pulse; 6-intra-pulse cutting through the pulse; 7-ore blocks; 8-square compensation chamber; 9-stopes; 10-compensating space isolation means; 11-filling the retaining wall; 12-filling ore pillars; 13-near horizontal medium-length holes; 14-first blasting area; 15-a subsequent burst zone; 16-ventilation and ore removal channels; 17-primary ore body retaining wall; 18-hexagonal compensation chamber; 19-filling the ventilation shaft; 20-pass connecting way; 21-drop shaft; 22-ore body boundaries; 23-filling body.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
An embodiment of the first aspect of the present invention is to provide a method for continuous mining in a horizontal lateral direction of a head space, as shown in fig. 1 to 6, comprising:
Dividing: dividing ore bodies into layers 2 along the vertical direction, and dividing ore blocks 7 in each layer 2 along the trend direction of the ore bodies; an intra-pulse cutting through pulse 6 is arranged in the ore block 7, a square compensation chamber 8 is arranged in the intra-pulse cutting through pulse 6, and a plurality of stopes 9 are divided from the ore block 7 around the square compensation chamber 8;
The compensation space presetting step: filling ore pillars 12 are formed in the intra-pulse cutting through veins 6 at two ends of the square compensation chamber 8, and compensation spaces are formed between two sides of the filling ore pillars 12 and two side rock walls of the intra-pulse cutting through veins 6;
and (3) stoping and filling: each stope 9 in the ore block 7 is subjected to diagonal type split blasting stoping, wherein a pair of stopes 9 with diagonal type distribution are filled after blasting stoping, then the next pair of stopes 9 with diagonal type distribution are subjected to blasting stoping and filling, and each stope 9 and an intra-pulse cutting edge 5 form a primary ore body retaining wall 17 after each stope 9 is subjected to blasting.
In the horizontal lateral continuous mining method with the reserved compensation space, which is mentioned in the embodiment, the intra-pulse cutting through pulse 6 is arranged in the dividing step, the square compensation chamber 8 is arranged in the intra-pulse cutting through pulse 6, the ore block 7 is divided into a plurality of stopes 9 around the square compensation chamber 8, so that a larger blasting free surface and compensation space are provided for the first blasting of the stopes 9, and the ore body ore dropping difficulty is effectively reduced. Secondly, a plurality of stopes 9 in the ore block 7 are in blasting stoping process, and because diagonal type fractional blasting stoping is adopted, the square compensation chamber can provide blasting free surfaces for two stopes simultaneously, after blasting, diagonal type ventilation and ore discharging channels can be formed in the ore block, the ventilation effect is better, and the ore discharging efficiency is higher. Finally, each stope and intra-pulse cutting after each blasting can form a primary ore body retaining wall 17 between the edges 5, the primary ore body retaining wall 17 can be free from being provided with a filling retaining wall 11, the construction difficulty and the personnel operation intensity are greatly reduced while the span of the filling retaining wall is controlled, the construction cost is reduced, the effect of improving the construction efficiency is achieved, and the practicability is stronger.
The following describes the dividing step in detail:
The dividing step may specifically include: dividing the ore body into stages, as shown in fig. 2, dividing the ore body into segments 1 in each stage along the vertical direction, and dividing the ore body into layers 2 in each segment 1; the vein outside sections 1 are horizontally arranged with vein outside section laneways 3 along the direction of the ore body, and the vein outside section laneways 3 enter the ore body through vein outside layer-transfer connecting channels 4.
Specifically, the ore body can be medium-thick to extremely-thick, the thickness of the ore body is more than 4m, the stage height is 30-120 m, and specifically can be 30m, 50m, 80m, 100m or 120m; the height of the segments in the stage is 9-30 m, and can be 9m, 15m, 20m, 25m or 30m, and each segment is divided into 2-8 layers 2, and can be 2, 4, 6 or 8 layers 2; the height of the layering 2 is 3-8 m, and can be 3m, 4m, 6m or 8m; the vein outside subsection tunnel 3 is arranged on an ore body upper disc or an ore body lower disc along the direction of the trend of the ore body; in the trend direction, the length of the vein outside subsection tunnel 3 is smaller than the trend length of the ore body; the straight distance between the vein external section tunnel 3 and the ore body is 20-200 m, and can be 20m, 50m, 100m, 150m or 200m; the vein outer layer-transfer connecting channel 4 serves the stoping of a segmented ore body; the section size of the vein external layer-transfer connecting channel 4 is 3-6 m wide, 3-6 m high, and the width and the height can be 3m, 4m, 5m or 6m; the straight line distance of the vein external layer-transfer joint 4 is 20-200 m, and can be 20m, 50m, 100m or 200m; the gradient of the vein external layer-transfer joint 4 is-20%, and can be-20%, -10%, 0%, 10% or 20%.
The dividing step may further include: after the extra-pulse layer-by-layer joint 4 enters the ore body, an intra-pulse cutting edge pulse 5 and a plurality of intra-pulse cutting through pulses 6 are arranged in each layer 2 so as to divide each layer of ore body into a plurality of ore blocks 7 as shown in fig. 3.
Wherein the intra-pulse cutting edge pulse 5 is arranged in the ore body along the direction of the ore body, and the intra-pulse cutting through pulse 6 is arranged in the ore body perpendicular to the direction of the ore body.
In at least one embodiment, in adjacent tier 2: the intra-pulse cutting through pulses 6 are staggered, the intra-pulse cutting along pulses 5 are staggered, and the stopes 9 are staggered. By cutting through veins 6 and cutting along veins 5 in staggered arrangement, the adjacent mining blocks 7 and stopes 9 which are staggered in layers are divided, so that the stability of stope bottom plates or stope top plates in the upward layered or downward layered mining process can be effectively ensured, and the safety of operators is improved.
In some embodiments, in the dividing step: the ore blocks 7 are divided into four stopes 9 around the square compensation chamber 8, and the four stopes 9 are distributed diagonally in pairs.
As shown in fig. 4, four stopes 9 are arranged side by side in pairs, two rows of stopes 9 are arranged opposite to each other along the direction perpendicular to the direction of the ore body, each stope is approximately rectangular, the stope 9 at the upper left corner and the stope 9 at the lower right corner can be regarded as being diagonally distributed, and the stope 9 at the upper right corner and the stope 9 at the lower left corner can be regarded as being diagonally distributed.
It will be appreciated that the width of the square compensation chamber 8 needs to be greater than the width of the intra-pulse cutting through vein 6, and the square compensation chamber 8 is arranged at the bottom of the stope 9 and has a width of 3-10 m, specifically 3m, 5m, 8m or 10m.
Specifically, as shown in fig. 4, the square compensation chamber 8 is located at the butt joint of the bottom corners of the four stopes 9, the center of the shape formed by combining the four stopes 9 coincides with the center of the square compensation chamber 8, the 1/4 of the left upper corner of the square compensation chamber 8 is recessed into the stope 9 of the left upper corner, the 1/4 of the right upper corner of the square compensation chamber 8 is recessed into the stope 9 of the right upper corner, the 1/4 of the left lower corner of the square compensation chamber 8 is recessed into the stope 9 of the right lower corner, and the 1/4 of the right lower corner of the square compensation chamber 8 is recessed into the stope 9 of the right lower corner.
The following specifically describes the steps of compensating for space presetting:
In some embodiments, as shown in fig. 7, in the compensating space presetting step, the formation of the filling ore pillar 12 in the intra-pulse cutting through pulse 6 at both ends of the square compensating chamber 8 comprises: installing compensating space isolation devices 10 on the rock walls on two sides of the pulse 6 in the intra-pulse cutting mode; after the compensation space isolation device 10 is installed, a filling retaining wall 11 is erected at the joint of the intra-pulse cutting through vein 6 and the intra-pulse cutting along vein 5, a filling retaining wall 11 is erected at the joint of the intra-pulse cutting through vein 6 and the square compensation chamber 8, and then the space between the filling retaining wall 11 and the compensation space isolation device 10 is filled; after the filling body is solidified, the filling retaining wall 11 and the compensating space isolating device 10 can be recovered, and the filling ore pillar 12 is formed in the pulse cutting through pulse.
In the above steps, the continuous compensation space is formed by using the compensation space isolation device 10 installed in the filling body, and the larger blasting free surface can be provided by matching with the square compensation chamber 8, so that the ore body ore dropping difficulty is reduced while the ventilation capacity and the blasting effect are improved. Meanwhile, the compensation space isolation device 10 can form filling ore pillars 12 at the two ends of the intra-pulse cutting through pulse 6 and at the joint of the intra-pulse cutting through pulse 6 and the square compensation chamber 8, and the filling ore pillars 12 can play a supporting role on the roof, so that the stability of the stope roof is effectively ensured. After the use, the filling retaining wall 11 can be recycled, so that the mining cost is reduced.
In order to facilitate personnel to install the isolation device, the compensation space isolation devices 10 are sequentially installed on two sides of the rock wall of the pulse 6 to be penetrated in the pulse, a new isolation device can be formed by splicing and combining the isolation devices, and the width of each compensation space isolation device 10 is 0.5-4 m, and can be specifically 0.5m, 1.0m, 2.0m and 4m.
The stope filling procedure is specifically described below:
In some embodiments, as shown in fig. 6, each blast recovery process of the recovery filling step includes: constructing a near-horizontal medium-length hole 13 from the intra-pulse cutting along pulse 5 to a stope 9 in the ore block 7; each stope 9 is blasted in a direction along the trend of the ore body in a divided manner, the first blasting area 14 is blasted by using the space formed by the compensating space isolating device 10 and the square compensating chamber 8, and the subsequent blasting area 15 is blasted by using the space formed by the expansion brushing of the first blasting.
In at least one embodiment, as shown in fig. 6, the square compensation chamber 8 extends into the stope 9 to the same depth as the width of the primary blast zone 14 in the direction of the ore body strike. The square compensation chamber 8 can offset the clamping effect of the primary blasting due to small blasting compensation space, and ensure the success of the primary blasting.
Specifically, the width W of the first shot region 14 may be calculated by:
wherein:
lambda is a loosening coefficient of 1.2-1.5; w is the width of the space formed by the compensating space isolation device 10.
The width W calculated by the formula is convenient and fast in calculation method, accurate in calculation result and high in reliability through multiple field industrial tests.
In some embodiments, in the stope filling step: after blasting stoping of the first pair of diagonally distributed stopes 9 in the ore blocks 7 is finished, erecting a filling retaining wall 11 at the joint of the square compensation chamber 8 and the stopes 9 after stoping is finished to form a hexagonal compensation chamber 18, and particularly, refer to fig. 7; a filling retaining wall 11 is erected between the primary ore body retaining wall 17 and the filling ore pillar 12, the stope 9 after stoping is filled, after the filling body 23 is solidified, the stope 9 with the opposite side diagonal distribution is blasted and stoped until all stopes 9 are stoped and filled, as shown in fig. 8.
In the above steps, the hexagonal compensation chamber 18 can be formed after the filling retaining wall 11 is erected at the connection position of the square compensation chamber 8 and the stope 9 after the stope 9 is completed, so that only the plane type filling retaining wall 11 is required to be arranged at the connection position of the square compensation chamber 8 and the stope 9 after the stope 9 is completed, the arrangement of personnel is convenient, the stress on the positions of the filling retaining wall 11 is uniform, and the phenomenon of stress concentration in the local part of the filling retaining wall 11 can be avoided. The hexagonal compensation chamber 18 formed by the square compensation chamber 8 can still provide a first blasting compensation space for the next opposite stope, and effectively ensures the continuity and application effect of the technology.
As shown in fig. 8, a filling ventilation shaft 19 is arranged in the intra-pulse cutting edge vein 5, one side of the intra-pulse cutting edge vein 5 is a ore body boundary 22, an drop shaft connecting passage 20 is communicated in the extra-pulse subsection roadway 3, and an drop shaft 21 is arranged in the drop shaft connecting passage 20.
The side length of the hexagonal compensation chamber is 3-10 m, and can be 3m, 5m, 8m or 10m.
The thickness of the primary ore retaining wall 17 may be 1 to 5m, specifically 1m, 2m, 3m, 4m or 5m.
In some embodiments, each pit 9 may be mine-tapped with a remote scraper after a number of shots along the direction of the ore body.
Specifically, after the first blasting, ore is discharged by using a remote control scraper, and personnel enter a stope 9; during subsequent blasting, a remote control scraper is used for ore removal, and personnel do not enter the stope 9.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. A method of continuous mining in the horizontal lateral direction of a head space, comprising:
Dividing: dividing ore bodies into separate layers (2) along the vertical direction, and dividing ore blocks (7) in each separate layer (2) along the trend direction of the ore bodies; an intra-pulse cutting through pulse (6) is arranged in the ore block (7), a square compensation chamber (8) is arranged in the intra-pulse cutting through pulse (6), and the ore block (7) is divided into a plurality of stopes (9) around the square compensation chamber (8);
The compensation space presetting step: filling ore pillars (12) are formed in the intra-pulse cutting through veins (6) at two ends of the square compensation chamber (8), and compensation spaces are formed between two sides of the filling ore pillars (12) and rock walls at two sides of the intra-pulse cutting through veins (6);
And (3) stoping and filling: and each stope (9) in the ore block (7) is subjected to diagonal type split blasting stope, wherein a pair of diagonally distributed stopes (9) are filled after blasting stope, then the next pair of diagonally distributed stopes (9) are subjected to blasting stope and filling, and a primary ore body retaining wall (17) is formed between each stope (9) and an intra-pulse cutting edge (5) after blasting of each stope (9).
2. The method of horizontal lateral continuous mining of a head space according to claim 1, characterized in that said dividing step comprises in particular:
dividing the ore body into stages, dividing the ore body into segments (1) in each stage along the vertical direction, and dividing the ore body into layers (2) in each segment (1);
The segments (1) outside the vein are horizontally arranged with an outside-vein segmented roadway (3) along the direction of the trend of the ore body, and the outside-vein segmented roadway (3) enters the ore body through an outside-vein layer-transfer connecting channel (4);
Setting the intra-pulse cutting edge pulse (5) and a plurality of intra-pulse cutting through pulses (6), and dividing each layer of ore body into a plurality of ore blocks (7); the intrapulse cutting edges (5) are arranged in the ore body along the direction of the ore body; the intra-pulse cutting through pulse (6) is arranged in the ore body perpendicular to the direction of the ore body.
3. The head room horizontal lateral continuous mining method according to claim 1, characterized in that in adjacent said strata (2):
The intra-pulse cutting through pulses (6) are staggered, the intra-pulse cutting along pulses (5) are staggered, and the stopes (9) are staggered.
4. The head space horizontal side continuous mining method according to claim 1, wherein in the dividing step:
The ore blocks (7) are divided into four stopes (9) around the square compensation chamber (8), and the four stopes (9) are distributed diagonally.
5. The method of continuous mining in horizontal and lateral direction with reserved compensation space according to claim 1, characterized in that, in the compensation space presetting step, the formation of filling ore pillar (12) in the intra-pulse cutting through pulse (6) at both ends of the square compensation chamber (8) comprises:
the compensating space isolation devices (10) are arranged on the rock walls at two sides of the intra-pulse cutting through pulse (6);
filling retaining walls (11) are erected at the two ends of the intra-pulse cutting through pulse (6) and at the joint of the intra-pulse cutting through pulse (6) and the square compensation chamber (8), and the space between the filling retaining walls (11) and the compensation space isolation device (10) is filled;
and after the filling body (23) is solidified, the filling retaining wall (11) and the compensating space isolation device (10) are removed, and filling ore pillars (12) are formed in the intra-pulse cutting through vein (6).
6. The head space horizontal lateral continuous mining method according to claim 1, wherein in the stope filling step:
After blasting stoping of the stopes (9) which are diagonally distributed in the ore blocks (7) is finished, erecting a filling retaining wall (11) at the joint of the square compensation chamber (8) and the stopes (9) which finish stoping to form a hexagonal compensation chamber (18);
erecting a filling retaining wall (11) between the primary ore body retaining wall (17) and the filling ore pillar (12), filling the stope (9) after the stoping is finished, and blasting and stoping the stope (9) with the opposite side diagonally distributed after the filling body (23) is solidified.
7. The method of continuous mining horizontally laterally of the head space of claim 5, characterized in that in the stoping filling step, the blasting stoping of each pair of diagonally distributed stopes (9) comprises:
Constructing a near-horizontal medium-length hole (13) from an intra-pulse cutting edge pulse (5) to the stope (9) in the ore block (7);
Each stope (9) is uniformly blasted, a first blasted area (14) is blasted by utilizing a space formed by the compensation space isolation device (10) and the square compensation chamber (8), the first blasted area (14) does not form the primary ore body retaining wall (17), and a subsequent blasted area (15) is blasted by utilizing a space formed by the first blasted expansion brushing and forms the primary ore body retaining wall (17).
8. The method of continuous mining in horizontal and lateral direction of the reserved compensation space according to claim 7, characterized in that the depth of the square compensation chamber (8) extending into the stope (9) in the direction of the ore body trend is the same as the width of the first blasting region (14).
9. The head space horizontal lateral continuous mining method according to claim 8, wherein the width W of the first shot region (14) is calculated by:
wherein:
Lambda is a loosening coefficient of 1.2-1.5; w is the space width formed by the compensating space isolation device (10).
10. The method of continuous mining horizontally sideways in the space of the head according to claim 7, characterized in that each of the stopes (9) is blasted in the direction of the ore body in steps:
After the primary blasting, using a remote control scraper to discharge ores, and enabling personnel to enter a stope (9); and during subsequent blasting, the remote control scraper is used for ore removal, and personnel do not enter a stope (9).
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