CN115012938A - Non-cutting raise deep hole slot-drawing blasting ore-breaking mining method - Google Patents
Non-cutting raise deep hole slot-drawing blasting ore-breaking mining method Download PDFInfo
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- CN115012938A CN115012938A CN202210532606.4A CN202210532606A CN115012938A CN 115012938 A CN115012938 A CN 115012938A CN 202210532606 A CN202210532606 A CN 202210532606A CN 115012938 A CN115012938 A CN 115012938A
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- 238000005422 blasting Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000005065 mining Methods 0.000 title claims abstract description 15
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 238000005553 drilling Methods 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 7
- 238000005474 detonation Methods 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims description 2
- 230000005641 tunneling Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000004804 winding Methods 0.000 claims 2
- 230000002146 bilateral effect Effects 0.000 claims 1
- 230000001680 brushing effect Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 7
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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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Abstract
The invention relates to a non-cutting raise deep hole slot-drawing blasting ore-breaking mining method, belonging to the technical field of mining; in a stope adopting layered upward deep hole blasting ore dropping, determining a slot-drawing blasting position in a first step, determining a slot-drawing hole arrangement form in a second step, pressing a top of a roadway of a slot-drawing point to be brushed greatly in a third step, drawing a slot inclined hole and perforating an ore-dropping hole in a fourth step, drawing a slot inclined hole to perform blasting in a fifth step, and performing ore-dropping hole blasting in a sixth step to realize deep hole blasting ore dropping; the invention has the advantages of convenient construction, high speed, safety, reliability, capability of greatly reducing mining cost and the like.
Description
Technical Field
The invention relates to the technical field of mining, in particular to a cutting-free raise deep hole slot-drawing blasting ore-breaking mining method.
Background
In the upward deep hole blasting ore breaking method widely implemented at home and abroad, two types of methods are generally used for forming the primary blasting compensation space:
one is digging and building a cutting raise, and the construction is carried out by adopting a common method, so that the construction progress is slow, and the potential safety hazard is large; the construction is carried out by adopting a tank hanging or climbing method, the transition period of the equipment is long, and the construction cost is high;
one is to pierce and cut the cut groove courtyard, adopt the cut groove courtyard bogie to pierce and cut the ascending cut slot hole, the construction progress is fast, safe and reliable, but the trolley price is high (like CY-R40C type trolley, the value is more than 500 ten thousand yuan), the mine cuts the courtyard total amount of engineering, can't satisfy the continuous operation of trolley, cause equipment and personnel to be idle, construction cost is high.
Therefore, the cutting-free raise deep hole slot-drawing blasting ore-breaking mining method is provided.
Disclosure of Invention
The invention aims to solve the technical problem of providing a cutting-free raise deep hole slot-drawing blasting ore-breaking mining method, so as to solve the problems of high equipment cost and low safety of a raise deep hole blasting mode in the prior art described in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a cutting-free raise deep hole slot-drawing blasting ore-breaking mining method comprises the following steps that in a stope adopting layered upward deep hole blasting ore-breaking, the slot-drawing blasting position is determined in the first step, the slot-drawing hole arrangement form is determined in the second step, the top-pressing brush for a roadway of a slot-drawing point is large in the third step, the slot-drawing inclined hole and ore-breaking hole are punched in the fourth step, the slot-drawing inclined hole blasting is performed in the fifth step, and the ore-breaking hole blasting is performed in the sixth step, so that the deep hole blasting ore-breaking is realized.
S1, determining the slot-drawing blasting position: in a stope adopting layered upward deep hole blasting ore falling, selecting soft ore or ore weak structural surface on the upper plate or between the upper plate and the lower plate of an ore body;
s2, determining the arrangement form of the slotted holes: gradually making a rising and falling transition from the line-arranging plane angle of the slotted hole to a vertical plane by approaching a horizontal plane, wherein the size of the transition angle is determined by the distance between the orifice of the line-arranging hole and the bottom of the hole, and the distance between the orifice is smaller than the distance between the bottom of the hole;
s3, the roadway roof pressing brush at the opposite-pulling groove point is large: the method comprises the following steps that (1) triangular ore blocks in the front part of a first row of inclined slot-drawing holes are subjected to large top pressing brushes for a tunnel at slot-drawing points by adopting a conventional tunnel driving method, the large top pressing brushes extend from a cable hole opening to a hole bottom, the opening starting positions are as high as the tunnel, the hole bottom stopping positions are about 5.5-6.5m high, and the shape of the triangular ore blocks is a reverse slope;
s4, groove inclined hole and ore caving hole perforation: when the hole bottom distance does not exceed the designed value, allowing the error between the drilling angle and the designed drilling angle generated by rotating the drill rod after fixing the drilling plane of the drilling machine;
s5, groove-drawing inclined hole blasting: determining the detonation sequence of the deep holes in the same row according to the section shape of the roadway after the top pressing brush is large, and detonating the middle hole firstly and then the two side holes when the section boundary is smaller than the chute inclined hole blasting boundary;
s6, ore-caving hole blasting: and the ore caving hole is a deep hole which is formed after normal blasting is met by a compensation space generated by slot-drawing inclined hole blasting, and normal blasting ore falling is carried out according to the designed loading amount or ore caving amount.
Preferably, the following components: the distance between the orifices in the step S2 is generally 0.6-1.5 m, and the distance between the bottoms of the orifices is generally 1.5-2.5 m.
Preferably, the following components: in step S2, the slotted hole flat cable is divided into homodromous single-side arrangement and opposite double-side arrangement according to the flat cable plane trend.
Preferably: in step S6, the ore-caving hole is an inclined hole or a straight hole.
The beneficial effect of adopting above technical scheme is:
according to the method, the arrangement form of the slotted hole is determined by determining the slotted hole blasting position, the top pressing brush for the roadway of the slotted point is large, the slotted inclined hole and the ore-caving hole are punched, the slotted inclined hole is blasted, the ore-caving hole is blasted, and the ore-caving hole is blasted, so that the deep hole blasting ore falling can be realized, and the method is low in blasting cost and high in safety.
Drawings
FIG. 1 is a flow chart of a non-cutting raise deep hole slot-drawing blasting ore-breaking mining method of the present invention;
FIG. 2 is a flow chart of the roadway plane of the present invention;
FIG. 3 is a cross-sectional view of the slot-drawing roadway of FIG. 2 taken at 2-2 in accordance with the present invention;
figure 4 is a cross-sectional view of the medium-length hole chamber of the invention at 1-1 in figure 2;
FIG. 5 is a cross slope view of the stope of the present invention;
figure 6 is a longitudinal section through the stope of the present invention;
fig. 7-20 are deep hole layouts of the present invention.
Detailed Description
The following detailed description of embodiments of the invention:
example 1
In a stope adopting layered up-deep hole blasting ore falling, determining a slot-drawing blasting position in a first step, determining a slot-drawing hole arrangement form in a second step, pressing a top of a roadway of a slot-drawing point to be brushed greatly in a third step, pulling slot inclined holes and perforating ore-breaking holes in a fourth step, pulling slot inclined hole blasting in a fifth step, and carrying out ore-breaking hole blasting in a sixth step to realize deep hole blasting ore falling;
in the step of determining the slot-drawing blasting position, the slot-drawing blasting position should be selected from the upper plate or the soft ore or the ore weak structural surface between the upper plate and the lower plate of the ore body.
In the step of determining the arrangement form of the slotted holes, the planar angle of the flat cable of the slotted holes gradually makes a pitch transition from a horizontal plane to a vertical plane, the size of the transition angle is determined by the distance between the orifices of the flat cable holes and the distance between the bottoms of the holes, wherein the distance between the orifices is smaller than the distance between the bottoms of the holes, the distance between the orifices is generally (0.6-1.5) m, and the distance between the bottoms of the holes is generally (1.5-2.5) m.
In the step of determining the arrangement form of the slotted holes, the slotted hole flat cable is divided into homodromous single-side arrangement and opposite double-side arrangement according to the flat cable plane tendency.
In the large step of the roadway top pressing brush for the slot drawing points, triangular ore blocks at the front part of the inclined slot drawing hole are arranged at the head, because the hole depth is small and the opening of the wire arrangement hole is dense, the operation of a deep hole drilling machine is not suitable, the roadway top pressing brush for the slot drawing points is large by adopting a conventional roadway tunneling method, the large direction of the top pressing brush is that the top pressing brush is extended from the opening of the wire arrangement hole to the bottom of the hole, the opening starting position is as high as the roadway, the height of the hole bottom stopping position is about 6m, and the shape of the top pressing brush is a reverse slope.
In the step of perforating the inclined hole of the pull groove and the ore-caving hole, the inclined angle of a perforating surface (dial plate plane) of a drilling machine is adjusted according to the inclined angle of the wire arranging hole, and then the hole is perforated according to the designed drilling angle. And when the hole bottom distance does not exceed the designed value, the error generated by the angle of the rotating drill rod after the drilling plane of the drilling machine is fixed and the designed drilling angle is allowed.
In the step of the slot-drawing inclined hole blasting, the blasting sequence of the deep holes in the same row is determined according to the shape of the cross section of the roadway after the top-pressing brush is large, and when the boundary of the cross section is smaller than the blasting boundary of the slot-drawing inclined hole, the middle hole is blasted first, and then the two side holes are blasted.
In the ore-caving hole blasting step, the ore-caving hole is a deep hole, which can be an inclined hole or a straight hole, and the compensation space generated by the slot-drawing inclined hole blasting meets the requirement of normal blasting, and the ore-caving is normally blasted according to the designed charge or ore-caving amount.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, many variations and modifications can be made without departing from the inventive concept of the present invention, which falls into the protection scope of the present invention.
Claims (5)
1. A non-cutting raise deep hole slot-drawing blasting ore-breaking mining method is characterized in that: the method comprises the following steps of determining a slot-drawing blasting position in a stope adopting layered upward deep hole blasting ore-breaking, determining a slot-drawing hole arrangement form in a second step, greatly brushing a top of a roadway of a slot-drawing point in a third step, perforating slot-drawing inclined holes and ore-breaking holes in a fourth step, blasting slot-drawing inclined holes in a fifth step, blasting ore-breaking holes in a sixth step, and realizing deep hole blasting ore-breaking.
2. The non-cutting raise deep hole slot-drawing blasting ore-breaking mining method according to claim 1, characterized by comprising the following steps:
s1, determining the slot-drawing blasting position: in a stope adopting layered upward deep hole blasting ore falling, selecting soft ore or ore weak structural surface on the upper plate or between the upper plate and the lower plate of an ore body;
s2, determining the arrangement form of the slotted holes: gradually making a rising and falling transition from the line-arranging plane angle of the slotted hole to a vertical plane by approaching a horizontal plane, wherein the size of the transition angle is determined by the distance between the orifice of the line-arranging hole and the bottom of the hole, and the distance between the orifice is smaller than the distance between the bottom of the hole;
s3, the roadway roof pressing brush at the opposite-pulling groove point is large: the triangular ore blocks in the front part of the first row of inclined slot-drawing holes are subjected to large top pressing brushes for the roadways at slot-drawing points by adopting a conventional roadway tunneling method, the large top pressing brushes are extended from the orifices of the wire arrangement to the bottom of the holes in the direction, the orifices are as high as the roadways, the hole bottom stopping positions are about 5.5-6.5m high, and the triangular ore blocks are in a reverse slope shape;
s4, groove inclined hole and ore caving hole perforation: when the hole bottom distance does not exceed the designed value, allowing the error between the drilling angle and the designed drilling angle generated by rotating the drill rod after fixing the drilling plane of the drilling machine;
s5, groove-drawing inclined hole blasting: determining the detonation sequence of the deep holes in the same row according to the section shape of the roadway after the top pressing brush is large, and detonating the middle hole firstly and then the two side holes when the section boundary is smaller than the chute inclined hole blasting boundary;
s6, ore caving hole blasting: and the ore caving hole is a deep hole which is formed after normal blasting is met by a compensation space generated by slot-drawing inclined hole blasting, and normal blasting ore falling is performed according to the designed loading amount or ore caving amount.
3. The mining method of claim 2, wherein the hole pitch in the step S2 is generally 0.6 to 1.5m, and the hole bottom pitch is generally 1.5 to 2.5 m.
4. The mining method of claim 2, wherein in the step S2, the rift hole winding displacement is divided into a homodromous unilateral arrangement and an opposite bilateral arrangement according to the winding displacement plane trend.
5. The method of claim 2, wherein in the step S6, the ore-breaking hole is an inclined hole or a straight hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210532606.4A CN115012938A (en) | 2022-05-17 | 2022-05-17 | Non-cutting raise deep hole slot-drawing blasting ore-breaking mining method |
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| CN202210532606.4A CN115012938A (en) | 2022-05-17 | 2022-05-17 | Non-cutting raise deep hole slot-drawing blasting ore-breaking mining method |
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| CN115012938A true CN115012938A (en) | 2022-09-06 |
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