CN216642101U - Segmented medium-length hole stope structure capable of continuous and efficient stoping - Google Patents
Segmented medium-length hole stope structure capable of continuous and efficient stoping Download PDFInfo
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- CN216642101U CN216642101U CN202220125437.8U CN202220125437U CN216642101U CN 216642101 U CN216642101 U CN 216642101U CN 202220125437 U CN202220125437 U CN 202220125437U CN 216642101 U CN216642101 U CN 216642101U
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Abstract
The utility model provides a segmented medium-length hole stope structure capable of realizing continuous and efficient stoping, which comprises a first segmented medium-length hole stope, two second segmented medium-length hole stopes arranged on the left side and the right side of the first segmented medium-length hole stope, and a rock drilling roadway arranged at the bottom of any segmented medium-length hole stope; a plurality of upward fan-shaped blast holes and horizontal blast holes are arranged in the second sectional medium-length hole stope, and a plurality of upward fan-shaped blast holes are arranged in the first sectional medium-length hole stope; the arbitrary upward fan-shaped big gun hole sets gradually first powder charge section, non-powder charge section and second powder charge section along the direction that the ore body of rock drilling tunnel inside to stope extends. The stope structure combined by a plurality of sectional medium-length hole stopes and the blast hole structure combined by the horizontal and upward fan-shaped blast holes are adopted, and the non-explosive sections are arranged in the upward fan-shaped blast holes to separate the explosive sections, so that the sublevel blasting ore caving in the stope is realized, the blasting effect is improved, the large block rate of ore is reduced, the ore recovery rate of the stope is improved, and the purpose of continuous and efficient stope is achieved.
Description
Technical Field
The utility model relates to the technical field of mining, in particular to a segmented medium-length hole stope structure capable of realizing continuous and efficient stoping.
Background
Along with the increase of the modern construction speed of China, the effect of mineral resources is increased day by day, and higher requirements are put forward for mining engineering. The mining process is of great importance to mining engineering, and determines the mining efficiency of mineral resources and the safety of the mining process. The traditional mining process has the problems of resource waste, low process level, poor safety guarantee and the like in the application process, and the healthy development of the mineral industry in China is severely restricted; the modern mining process is required to improve the mining efficiency and the mineral utilization rate of the mining engineering, improve the safety of the mineral resource mining process and reduce the accident rate. In the face of the current situation, improving automation of mining equipment and perfecting a mining process becomes a common method for improving mining efficiency of mines.
At present, most medium-length hole stopes adopt upward fan-shaped medium-length holes to collapse ores during blasting, and large hole bottom distance is easy to occur during arrangement of fan-shaped holes, so that ores at the position are not thoroughly damaged, the blasting effect is poor, large blocks are easy to generate, and the secondary treatment cost is increased. Most medium-length hole stopes adopt trench bottom structure ore removal, consequently can lead to the stope bottom to form a V type structure, and trench bottom structure's ore deposit volume can not be retrieved along with normal bank blasting, leads to the stope to fill some ore deposits and is stayed in the stope for the rate of recovery of ore reduces, has caused the waste of mineral resources, influences the whole rate of recovery of stope. Therefore, how to arrange stope structures and blast hole structures has important influence on mining process and blasting effect, and finally influences the recovery rate of ores and the economic benefit of stopes.
In view of the above, there is a need for an improved structure of a sectional medium-length hole stope capable of continuous and efficient stoping, which solves the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a sectional medium-length hole stope structure capable of realizing continuous and efficient stoping, which adopts a stope structure formed by combining a plurality of sectional medium-length hole stopes and a blast hole structure formed by combining a horizontal blast hole and an upward fan-shaped blast hole to carry out step mining; the direction that upwards inside fan-shaped big gun hole extends to the inside ore body in stope along the rock drilling tunnel sets gradually first powder charge section, non-powder charge section and second powder charge section, realizes that the interior segmentation blasting of stope collapses the ore deposit, improves the blasting effect, reduces the bold rate of ore, has improved the ore recovery rate in stope, reaches the purpose of serialization high efficiency stope.
In order to realize the purpose of the utility model, the utility model provides a segmented medium-length hole stope structure capable of realizing continuous and efficient stoping, which comprises a first segmented medium-length hole stope, two second segmented medium-length hole stopes arranged at the left side and the right side of the first segmented medium-length hole stope and a rock drilling roadway arranged at the bottom of any segmented medium-length hole stope; a plurality of upward fan-shaped blast holes and horizontal blast holes are arranged in the second sectional medium-length hole stope, and a plurality of upward fan-shaped blast holes are arranged in the first sectional medium-length hole stope;
arbitrary upward fan-shaped big gun hole is followed the direction that the ore body of rock drilling tunnel inside extends to the stope sets gradually first powder charge section, non-powder charge section and second powder charge section, the inside stemming that is equipped with of non-powder charge section realizes first powder charge section with the separation of second powder charge section.
As a further improvement of the utility model, the non-charging sections are arranged in a space range which is 0.4-0.6 times of the height of the stope from the bottom of the sectional medium-length hole stope, all the non-charging sections in the same row of the same stope form an arc line, and the arc top of the arc line is positioned at the center.
As a further improvement of the utility model, the length of the non-charging section is 0-1 m, so that the upward fan-shaped blast holes can realize blasting effect on a stope.
As a further improvement of the utility model, the diameter of the non-explosive section of the upward fan-shaped blast hole is 2-5 cm larger than that of the first explosive section and that of the second explosive section, so that the first explosive section and the second explosive section are separated.
As a further improvement of the utility model, the detonating tubes in the first explosive charging sections of the same row of faces in the same stope are connected with each other, and the detonating tubes in the second explosive charging sections are connected with each other; the first charge section and the second charge section are respectively connected with different detonating cords.
As a further improvement of the utility model, 1-2 layers of the second sectional medium-length hole stopes are further arranged on the outer layers of the second sectional medium-length hole stopes arranged on the left side and the right side of the first sectional medium-length hole stope, so that a unit stope consisting of 5 or 7 sectional medium-length hole stopes is formed.
As a further improvement of the utility model, the upward fan-shaped blast holes comprise 2-3 upward vertical medium-length hole blast holes in the middle and a plurality of side blast holes on two sides, so that the block rate of the caving ore is reduced.
As a further improvement of the utility model, the hole bottom spacing of the blast holes of the upward vertical medium-length hole is 2.0-2.5 m, and the adjacent hole bottom spacing of the side blast holes and the horizontal blast holes is 1.0-2.2 m; and along the extending direction of the rock drilling roadway, the row spacing of blast holes is 1.4-1.8 m.
As a further improvement of the utility model, the segmented medium-length hole stope structure capable of continuous and efficient stoping is also provided with a plurality of vein-penetrating ore removal tunnels for communicating the adjacent rock drilling tunnels; the included angle between the vein-penetrating ore removal roadway and the rock drilling roadway is 40-50 degrees, and the distance between the vein-penetrating ore removal roadways is 10-12 m.
As a further improvement of the utility model, the segmented medium-length hole stope structure further comprises a middle section transportation flat roadway arranged at the front end and the rear end of the stope, and a ore-sliding connection roadway and an ore-sliding shaft arranged in the middle section transportation flat roadway; the middle section transportation horizontal roadway is perpendicular to the rock drilling roadway.
The utility model has the beneficial effects that:
1. the utility model relates to a segmented medium-length hole stope structure capable of realizing continuous and efficient stoping, which comprises a first segmented medium-length hole stope, two second segmented medium-length hole stopes arranged on the left side and the right side of the first segmented medium-length hole stope, and a rock drilling roadway arranged at the bottom of any segmented medium-length hole stope; a plurality of upward fan-shaped blast holes and horizontal blast holes are arranged in the second sectional medium-length hole stope, and a plurality of upward fan-shaped blast holes are arranged in the first sectional medium-length hole stope; the direction that the arbitrary fan-shaped big gun hole of going up extends to the ore body of stope inside along the rock drilling tunnel sets gradually first powder charge section, non-powder charge section and second powder charge section, and non-powder charge section inside is equipped with the stemming, realizes the separation of first powder charge section and second powder charge section. According to the utility model, through the stope structure of a plurality of sectional medium-length hole stopes, a first sectional medium-length hole stope and second sectional medium-length hole stopes on the left side and the right side of the first sectional medium-length hole stope are arranged, so that step mining is realized; the non-explosive section of direction that the inside ore body that extends to the stope along the rock drilling tunnel of upward fan-shaped big gun hole comes separation explosive section, can realize that the interior segmentation blasting of stope collapses the ore, improves blasting effect, reduces the bold rate of ore, has improved the ore recovery rate of stope, reaches the purpose of high-efficient stope of serialization.
2. The upward sector blast hole is provided with a first charge section, a non-charge section and a second charge section in sequence along the extending direction of a rock drilling roadway to an ore body in a stope. When the blasting-type mine stope is applied, the first explosive-charging section and the horizontal blast hole which are detonated first, and then the second explosive-charging section is detonated, because the lower half part of the first explosive-charging section in the stope provides a new downward free surface and compensation space for the upper half part of the ore which is blasted later, and small cracks can be formed on the deep hole wall in the upper half part of the first explosive-charging section after blasting, the best blasting effect of the ore body is realized, the large block rate of the ore is reduced, and the cost of secondary treatment is saved.
3. According to the utility model, a plurality of standard segmented adjacent medium-length hole stopes are combined into a unit stope for mining, and compared with the traditional mining mode, only one stope is left in one panel area, so that the loss rate of ores is reduced, and the mining income is increased. And a plurality of adjacent stopes are used as the same unit stope for mining, so that the rock drilling roadway and the drift ore removal roadway of the adjacent stopes can be simultaneously used for ore removal, the caving ore can be better removed to the greatest extent, and the mining efficiency is improved. According to the utility model, two to three upward vertical medium-length hole blast holes are arranged in the upward medium-length hole blast holes, so that the distribution range of blasting high stress can be enlarged, and the block rate of the caving ore can be effectively reduced; the method has the characteristics of high ore recovery rate, low large block rate, good mining quality, convenience in ore removal and the like.
Drawings
Fig. 1 is a stope structure schematic diagram of a second sectional medium-length hole stope of the utility model.
FIG. 2 is a schematic structural diagram of a sectional medium-length hole stope capable of continuous and efficient stoping.
FIG. 3 is a schematic structural diagram of a segmented medium-length hole stope capable of continuous and efficient stoping according to the embodiment of the utility model.
FIG. 4 is a schematic view of the structure in the direction II-II in FIG. 3.
Reference numerals
10-a first subsection medium-length hole stope; 20-a second section of medium-length hole stope; 3-drawing a vein and removing the ore roadway; 4-drilling a rock roadway; 5-upward sector blast holes; 51-a first charge segment; 52-a non-charge section; 53-a second charge segment; 6-horizontal blast hole; 7-middle section transportation flat roadway; 8-ore pass communication roadway; 9-chute shaft.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Examples
Referring to fig. 1-2, the utility model provides a sectional medium-length hole stope structure capable of continuous and efficient stoping, which comprises a first sectional medium-length hole stope 10, two second sectional medium-length hole stopes 20 arranged on the left side and the right side of the first sectional medium-length hole stope 10, and a rock drilling roadway 4 arranged at the bottom of any sectional medium-length hole stope; a plurality of upward fan-shaped blast holes 5 and horizontal blast holes 6 are arranged in the second sectional medium-length hole stope 20, and a plurality of upward fan-shaped blast holes 5 are arranged in the first sectional medium-length hole stope 10; the arbitrary upward fan-shaped blast hole 5 sets gradually first powder charge section 51, non-powder charge section 52 and second powder charge section 53 along the direction that rock drilling tunnel 4 extends to the inside ore body in stope, and non-powder charge section 52 is inside to set up the stemming. According to the utility model, by adopting the stope structure of a plurality of sectional medium-length hole stopes, a first sectional medium-length hole stope 10 and second sectional medium-length hole stopes 20 on the left side and the right side of the first sectional medium-length hole stope are arranged, so that step mining is realized; the non-explosive charge section 52 of direction that the inside ore body that extends to the stope along rock drilling tunnel 4 of 5 inside edge of upward fan-shaped big gun holes comes separation first explosive charge section 51 and second explosive charge section 53, can realize that the segmentation blasting collapses the ore in the stope, improves the blasting effect, reduces the bold rate of ore, has improved the ore recovery rate in stope, reaches the purpose of high-efficient stope of serialization.
Specifically, the non-explosive sections 52 are arranged in a space range which is 0.4-0.6 times of the height of the stope from the bottom of the segmented medium-length hole stope, all the non-explosive sections 52 in the same row face of the same stope form an arc line, and the arc top is located at the center. The detonating tubes in the first explosive loading sections 51 on the same row of surfaces in the same stope are mutually connected, and the detonating tubes in the second explosive loading sections 53 are mutually connected; the first charge segment 51 and the second charge segment 53 are connected to different detonating cords. The length of the non-charging section 52 is 0-1 m, and the upward fan-shaped blast hole 5 is guaranteed to achieve the blasting effect. The diameter of the non-charging section 52 of the upward fan-shaped blast hole 5 is 2-5 cm larger than that of the first charging section 51 and the second charging section 53, so that the first charging section 51 and the second charging section 53 are separated. In the same stope, first charge section 51 and horizontal blast hole 6 of upwards fan-shaped blast hole 5 are detonated first, second charge section 53 is detonated again, because the lower half of blasting earlier provides a new decurrent free surface and compensation space for the first half ore of blasting later in the stope, and also can form the crack on the deep pore wall in first half after first charge section 51 blasts, realize best blasting effect, reduce the bulk fraction of ore, practice thrift the cost of secondary treatment.
Particularly, the outer layer of the second segmental medium-length hole stope 20 arranged at the left side and the right side of the first segmental medium-length hole stope 10 can also be provided with 1-2 layers of second segmental medium-length hole stopes 20, so that a unit stope consisting of 5 or 7 segmental medium-length hole stopes is formed.
Referring to fig. 3 to 4, the unit stope is composed of a first sectional medium-length hole stope 10 in the middle and two second sectional medium-length hole stopes 20 at the left and right. In actual production, firstly, the second sectional medium-length hole stopes 20 on the left side and the right side of the unit stope are mined in one step, the first sectional medium-length hole stope 10 close to the middle is mined in sequence, and the stability of the stope and the safety of subsequent processes are ensured by adopting a mode of mining while filling. In fig. 3 to 4, the second-stage medium-length hole stopes 20 on the left and right sides have been mined and filled with high-strength filling bodies, and mining is being performed sequentially toward the first-stage medium-length hole stope 10 near the middle.
Specifically, the upward fan-shaped blast holes 5 comprise 2-3 upward vertical medium-length hole blast holes in the middle and a plurality of side blast holes on two sides, so that the block rate of the caving ore is reduced; the distance between the bottoms of the blast holes of the upward vertical medium-length holes is 2.0-2.5 m, and the distance between the bottoms of the adjacent side blast holes and the horizontal blast holes 6 is 1.0-2.2 m; along the extending direction of the rock drilling roadway (4), the row pitch of blast holes is 1.4-1.8 m.
In some specific embodiments, the segmented medium-length hole stope structure capable of continuous and efficient stoping is further provided with a plurality of vein-penetrating ore removal tunnels 3 which are communicated with adjacent rock drilling tunnels 4; the included angle between the vein-penetrating ore removal roadway 3 and the rock drilling roadway 11 is 40-50 degrees, and the distance between the vein-penetrating ore removal roadways 3 is 10-12 m. The segmented medium-length hole stope structure also comprises a middle section transportation flat roadway 7 at the front end and the rear end of the stope, and a ore-sliding connection roadway 8 and an ore-sliding shaft 9 in the middle section transportation flat roadway 7; the middle section transportation horizontal roadway 7 is perpendicular to the rock drilling roadway 4.
Particularly, if the site production is coordinated and organized properly, the unit stope preferably comprises a stope structure of 5 segmented medium-length hole stopes, and only one stope is reserved after mining; compared with the traditional mode that each stope is provided with a bottom column, the recovery is carried out in the later period, and the recovery rate reaches 40 percent at most; the recovery rate in the technical method is equivalent to 80%, the loss rate of ores is reduced, and the economic benefit is increased.
The principle of the utility model is as follows:
dividing a panel stope to be mined into adjacent standard subsection medium-length hole stopes, wherein a plurality of subsection medium-length hole stopes form a unit stope structure, and each unit stope comprises a first subsection medium-length hole stope 10 in the middle and second subsection medium-length hole stopes 20 arranged on the left side and the right side of the first subsection medium-length hole stope 10; a plurality of upward fan-shaped blast holes 5 and horizontal blast holes 6 are arranged in the second-segment medium-length hole stope 20, and a plurality of upward fan-shaped blast holes 5 are arranged in the first-segment medium-length hole stope 10. During production, firstly, the second sectional medium-length hole stopes 20 on the left side and the right side of the unit stope are mined in one step, the first sectional medium-length hole stope 10 close to the middle is mined in sequence, and the stability of the stope and the safety of subsequent processes are ensured by adopting a mode of mining while filling. The blasting mode adopts interior section blasting, will go up to fan-shaped big gun hole 5 and set gradually first powder charge section 51 to the direction of the ore body extension of stope inside along rock drilling tunnel 4, non-powder charge section 52 and second powder charge section 53, 52 are equipped with the stemming in the non-powder charge section, blast first powder charge section 51, blast second powder charge section 53 afterwards, the lower half of blasting earlier in the stope provides a new decurrent free surface and compensation space for the first ore of blasting after, improve the blasting effect. When the first section medium-length hole stope 10 in the middle of the unit stope is mined at last, a trench structure is reserved to ensure efficient ore removal.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. A segmented medium-length hole stope structure capable of realizing continuous and efficient stoping is characterized by comprising a first segmented medium-length hole stope (10), two second segmented medium-length hole stopes (20) arranged on the left side and the right side of the first segmented medium-length hole stope (10), and a rock drilling roadway (4) arranged at the bottom of any segmented medium-length hole stope; a plurality of upward fan-shaped blast holes (5) and horizontal blast holes (6) are formed in the second sectional medium-length hole stope (20), and a plurality of upward fan-shaped blast holes (5) are formed in the first sectional medium-length hole stope (10);
arbitrary upward fan-shaped big gun hole (5) are followed the direction that rock drilling tunnel (4) extend to the inside ore body in stope sets gradually first powder charge section (51), non-powder charge section (52) and second powder charge section (53), non-powder charge section (52) inside is equipped with the stemming.
2. The structure of the sectional medium-length hole stope capable of realizing continuous and efficient stoping according to claim 1, wherein the non-charge sections (52) are arranged in a space range which is 0.4-0.6 times of the stope height from the bottom of the sectional medium-length hole stope, all the non-charge sections (52) in the same row face of the same stope form an arc line, and the arc top of the arc line is located at the center.
3. The structure of the sectional medium-length hole stope capable of realizing continuous and efficient stoping according to claim 2, wherein the length of the non-explosive section (52) is 0-1 m, and the blasting effect of the upward fan-shaped blast holes (5) on the stope is guaranteed.
4. The structure of the sectional medium-length hole stope capable of realizing continuous and efficient stoping according to claim 3, wherein the diameter of the non-charge section (52) of the upward fan-shaped blast hole (5) is 2-5 cm larger than that of the first charge section (51) and the second charge section (53), so that the first charge section (51) and the second charge section (53) are blocked.
5. The structure of a segmented medium-length hole stope capable of continuous and efficient stoping according to claim 1, wherein the detonating tubes in the first explosive sections (51) of the same stope in the same row are connected with each other, and the detonating tubes in the second explosive sections (53) are connected with each other; the first charge section (51) and the second charge section (53) are respectively connected with different detonating cords.
6. The structure of the sectional medium-length hole stope capable of continuous and efficient stoping according to claim 1, wherein 1-2 layers of the second sectional medium-length hole stope (20) are further arranged on the outer layer of the second sectional medium-length hole stope (20) arranged on the left side and the right side of the first sectional medium-length hole stope (10), and a unit stope consisting of 5 or 7 sectional medium-length hole stopes is formed.
7. The structure of the sectional medium-length hole stope capable of realizing continuous and efficient stoping according to claim 1, wherein the upward fan-shaped blast holes (5) comprise 2-3 upward vertical medium-length hole blastholes in the middle and a plurality of side blast holes on two sides so as to reduce the block rate of the caving ore.
8. The structure of the sectional medium-length hole stope capable of realizing continuous and efficient stoping according to claim 7, wherein the hole-bottom spacing of the blast holes of the upward vertical medium-length hole is 2.0-2.5 m, and the adjacent hole-bottom spacing of the side blast holes and the horizontal blast holes (6) is 1.0-2.2 m; and along the extending direction of the rock drilling roadway (4), the row spacing of blast holes is 1.4-1.8 m.
9. The structure of the sectional medium-length hole stope capable of realizing continuous and efficient stoping according to claim 1, wherein the structure of the sectional medium-length hole stope capable of realizing continuous and efficient stoping is further provided with a plurality of vein-penetrating ore removal tunnels (3) which are communicated with the adjacent rock drilling tunnels (4); the included angle between the vein-penetrating ore removal roadway (3) and the rock drilling roadway (4) is 40-50 degrees, and the distance between the vein-penetrating ore removal roadway (3) is 10-12 m.
10. The segmented medium-length hole stope structure capable of realizing continuous and efficient stoping according to claim 9, wherein the segmented medium-length hole stope structure further comprises a middle-section transportation flat roadway (7) arranged at the front end and the rear end of the stope, and a ore-sliding connection roadway (8) and an ore-sliding shaft (9) arranged in the middle-section transportation flat roadway (7); the middle-section transportation flat roadway (7) is perpendicular to the rock drilling roadway (4).
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