CN114753873A - Construction method for vertical deep hole in top of high and large chamber - Google Patents
Construction method for vertical deep hole in top of high and large chamber Download PDFInfo
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- CN114753873A CN114753873A CN202210133091.0A CN202210133091A CN114753873A CN 114753873 A CN114753873 A CN 114753873A CN 202210133091 A CN202210133091 A CN 202210133091A CN 114753873 A CN114753873 A CN 114753873A
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- 238000010276 construction Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 claims abstract description 32
- 239000011435 rock Substances 0.000 claims abstract description 30
- 239000002893 slag Substances 0.000 claims abstract description 13
- 238000005422 blasting Methods 0.000 claims description 35
- 238000005507 spraying Methods 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 7
- 230000001680 brushing effect Effects 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 238000009423 ventilation Methods 0.000 abstract description 3
- 238000010079 rubber tapping Methods 0.000 abstract description 2
- 239000008280 blood Substances 0.000 description 9
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- 239000002360 explosive Substances 0.000 description 6
- 210000000952 spleen Anatomy 0.000 description 4
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- 210000003734 kidney Anatomy 0.000 description 3
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- 230000002093 peripheral effect Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
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- 238000003908 quality control method Methods 0.000 description 2
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 241000668854 Howardia biclavis Species 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
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- 230000003750 conditioning effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002175 menstrual effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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- 208000024891 symptom Diseases 0.000 description 1
- 229940126680 traditional chinese medicines Drugs 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D13/00—Large underground chambers; Methods or apparatus for making them
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D11/105—Transport or application of concrete specially adapted for the lining of tunnels or galleries ; Backfilling the space between main building element and the surrounding rock, e.g. with concrete
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- Geochemistry & Mineralogy (AREA)
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- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention relates to a construction method of a vertical deep hole at the top of a tall chamber, which comprises the following steps: firstly, dividing the chambers into different categories according to the size requirements of the chambers; then, analyzing the surrounding rock data of the underground chamber, and determining the grade of the surrounding rock of the underground chamber; finally, determining a construction step of the underground chamber by combining the grade of surrounding rocks of the underground chamber; the invention is beneficial to forming a certain construction standard for the buildings of the underground chambers with different size requirements by classifying the underground chambers, and is beneficial to carrying out standardized treatment on the system of the buildings; determining the grade of the surrounding rock of the underground chamber by analyzing the surrounding rock data of the underground chamber, designing the arching height of the underground chamber according to the design dimensions such as length dimension, width dimension, height dimension, arch height dimension and the like, further determining the grade of the surrounding rock of the underground chamber, and finally determining the construction step of the underground chamber; the invention has the characteristics of simple slag tapping process, safety, environmental protection and good ventilation effect, and has the advantages of reducing the construction cost, reducing the safety risk and easily controlling the quality.
Description
Technical Field
The invention belongs to the technical field of mine construction, and particularly relates to a construction method of a vertical deep hole in the top of a big underground chamber.
Background
The increase of mining scale and the improvement of mechanization level of the mine provide space for the use of large underground mine chambers, and the popularization rate of the large underground mine chambers is higher and higher. The large underground chamber construction has the following characteristics: compared with the construction of a common tunnel, the construction period of the high and large chamber is longer because the high and large chamber has large section and short length and cannot use large construction machinery; the chamber is generally connected with one or more roadways, the structure is complex, and the construction risk coefficient is high; the service life of the underground chamber is long, the engineering quality requirement is high, and the placed equipment is complex, so the construction difficulty is high, and the cost is high. Aiming at the construction characteristics of a large chamber, a top vertical deep hole construction method suitable for the large chamber is researched and provided, the construction method can reach the environmental standard, the construction period is short, slag and dust are reduced, and the pollution is small. The construction method of the vertical deep hole at the top of the large chamber overcomes the defects of high construction cost, long period, poor operation environment and the like of the traditional large-section chamber and has important practical significance for mine construction.
Disclosure of Invention
In order to solve the technical problems, the invention provides the top vertical deep hole construction method of the big chamber, which is simple to operate and high in construction efficiency
The technical scheme adopted by the invention for solving the technical problems is as follows:
a top vertical deep hole construction method of a high and large chamber comprises the following steps:
s1, dividing the chambers into different categories according to the size requirements of the chambers;
s2, analyzing the surrounding rock data of the underground chamber, and determining the grade of the surrounding rock of the underground chamber;
and S3, determining the construction steps of the underground chambers according to the surrounding rock grades of the underground chambers.
Preferably, in S1, the categories of the chambers are divided into two categories: firstly, the length size of the chamber is more than or equal to 30 mm; second, the length of the chamber is less than 30 mm.
Preferably, at S2, relevant dimensions of the chamber are determined based on chamber construction requirements, including a length dimension, a width dimension, a height dimension, and an arch height dimension.
Preferably, in S2, the type of the chamber construction is judged according to the length of the chamber, and the arching height of the chamber is designed according to 1/3-1/4 of the width of the chamber.
Preferably, in S3, for a chamber with a length of 30mm or more, a one-shot shaft method or a raise boring method is used at the left and right ends of the chamber, and a vertical raise is constructed upwards to the lower side of the arch part of the excavated chamber; for chambers with length dimension less than 30mm, only the vertical raise is arranged on the left side of the chamber.
Preferably, in S3, for a chamber with a length size of 30mm or more, the top of the left-end raise is excavated linearly to the right-side raise of the chamber to form a central roadway and a chamber top safety channel; for the underground chambers with the length dimension less than 30mm, the underground chambers are drilled from the left side of the underground chamber to the right side of the underground chamber through a vertical raise side; the top of the chamber is expanded and brushed, the top of the chamber is expanded and brushed to the designed size from right to left according to the position of a central roadway by using a rock drill, the lower surface of the arch part of the chamber is processed to be smooth, and dregs slide down from a right vertical raise and are discharged from the roadway.
Preferably, in S3, for the chamber with the length size of more than or equal to 30mm, supporting the top of the chamber, blasting and expanding the top of the chamber, spraying concrete supports at two ends of the chamber, and applying an anchor net spraying support on the joint surface; and for the chamber with the length dimension less than 30mm, after the construction of the top of the chamber is finished, blasting the right side of the chamber by adopting a wedge-shaped blast hole to form a cutting groove.
Preferably, in S3, for a chamber with a length dimension of greater than or equal to 30mm, arranging a vertical deep hole at one end of the chamber by taking the position of the raise as a center, wherein the deep holes are arranged vertically and parallelly; and (3) for the chamber with the length dimension less than 30mm, completing the deep hole construction, and blasting one end of the chamber to the designed width by taking the vertical raise as a free surface to form a cutting groove.
Preferably, in S3, the vertical deep hole penetration inspection is performed, before the vertical deep hole charging, the penetration of the vertical deep hole is inspected, whether the vertical deep hole penetrates to a specified position is checked, and if the vertical deep hole is blocked, the hole must be washed by using a drilling machine.
Preferably, in S3, the chamber is blasted in a wedge-shaped groove and a vertical deep hole, the chamber is blasted to form the wedge-shaped groove, a free surface and a compensation space are provided for subsequent vertical deep hole blasting, the deep holes are blasted in sequence from a cutting groove, a forklift is used for carrying out blasting in multiple times, and the chamber is subjected to anchor-spraying support by manually assisting slag tapping at corner parts to form a large chamber.
By adopting the technical scheme, the invention has the following beneficial effects:
a method for constructing a vertical deep hole at the top of a tall chamber is beneficial to forming certain construction standards for chamber buildings with different size requirements and conducting standardized treatment on the system of the buildings by classifying the chambers; determining the grade of the surrounding rock of the underground chamber by analyzing the surrounding rock data of the underground chamber, designing the arching height of the underground chamber according to the design dimensions such as the length dimension, the width dimension, the height dimension, the arch height dimension and the like, further determining the grade of the surrounding rock of the underground chamber, and finally determining the construction step of the underground chamber; the chamber constructed by the construction method of the vertical deep hole at the top of the tall chamber has the characteristics of simple slag discharge process, safety, environmental protection and good ventilation effect, and can reduce the construction cost, the safety risk and the effect of easy quality control.
Drawings
Fig. 1 is a schematic diagram of a chamber structure of a method for constructing a vertical deep hole in the top of a tall chamber according to the present invention;
fig. 2 is a schematic cross-sectional structure view of a chamber C _ C according to a top vertical deep hole construction method of a tall chamber of the present invention;
fig. 3 is a schematic perspective view of a vertical deep hole construction method for the top of a tall chamber according to the present invention;
fig. 4 is a schematic cross-sectional structure view of a chamber B _ B according to a top vertical deep hole construction method of a tall chamber of the present invention;
fig. 5 is a schematic cross-sectional structure view of a chamber a _ a according to a method for constructing a vertical deep hole in the top of a tall chamber of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Detailed description of the preferred embodiment 1
As shown in the attached figures 1-5, the construction method of the vertical deep hole at the top of the big underground chamber comprises the following steps:
s1, dividing the chambers into different categories according to the size requirements of the chambers;
at S1, the categories of the chambers are divided into two categories: firstly, the length dimension of the chamber is more than or equal to 30 mm; second, the length of the chamber is less than 30 mm.
S2, analyzing the surrounding rock data of the underground chamber, and determining the grade of the surrounding rock of the underground chamber;
at S2, the relevant dimensions of the chamber are determined according to the chamber construction requirements, including the length dimension, width dimension, height dimension and arch dimension.
In S2, the type of the construction of the underground chamber is judged according to the length of the underground chamber, and the arching height of the underground chamber is designed according to the width of the underground chamber from 1/3 to 1/4.
And S3, determining the construction steps of the underground chambers according to the surrounding rock grades of the underground chambers.
In S3, for the chamber with the length dimension more than or equal to 30mm, a one-time shaft forming method or a raise boring method is adopted at the left end and the right end of the chamber, and a vertical raise is constructed upwards to the lower side of the arch part of the excavated chamber; for chambers with length dimension less than 30mm, only the vertical raise is arranged on the left side of the chamber.
In S3, for a chamber with the length dimension being more than or equal to 30mm, the top of the patio at the left end is linearly excavated to the patio at the right side of the chamber to form a central roadway and a safe channel at the top of the chamber; for the underground chamber with the length dimension less than 30mm, the underground chamber is drilled to the right side of the underground chamber from the vertical raise side at the left side of the underground chamber; expanding and brushing the top of the chamber, expanding and brushing the top of the chamber to a designed size from right to left according to the position of a central roadway by using a rock drill, treating the lower surface of an arch part of the chamber smoothly, and discharging muck from the roadway after the muck slides down from a right vertical raise.
In S3, for the chamber with the length size of more than or equal to 30mm, supporting the top of the chamber, spraying concrete supports at two ends of the blasting expanding brush at the top of the chamber, and applying an anchor net spraying support on a joint surface; and for the chamber with the length dimension less than 30mm, after the construction of the top of the chamber is finished, blasting the right side of the chamber by adopting a wedge-shaped blast hole to form a cutting groove.
In S3, for a chamber with the length dimension of more than or equal to 30mm, arranging a vertical deep hole at one end of the chamber by taking the position of the raise as the center, wherein the deep holes are arranged vertically and parallelly; and for the chamber with the length dimension smaller than 30mm, completing the construction of the deep hole, and blasting one end of the chamber to the designed width by taking the vertical raise as a free surface to form a cutting groove.
And S3, checking the through of the vertical deep hole, checking whether the vertical deep hole penetrates to a specified position before charging the vertical deep hole, and washing the hole by using a drilling machine if the vertical deep hole is blocked.
And in S3, blasting the chamber wedge-shaped groove and the vertical deep hole, wherein the blasting of the chamber forms the wedge-shaped groove, a free surface and a compensation space are provided for the subsequent vertical deep hole blasting, the deep holes are blasted in sequence from the cutting groove, a shovel car is used for carrying out fractional blasting, the corner parts are subjected to slag discharge by means of manual assistance, and the chamber is subjected to anchor-spraying support to form a large chamber.
Specific example 2
A construction method of a top vertical deep hole of a large chamber takes a crushing chamber under a level of-500 meters of a certain copper mine as an example, the chamber is 20m long, 10m wide and 10m high, and the width of the chamber is less than 30m, and the chamber is a type II chamber. As shown in fig. 1 to 5, a method for constructing a vertical deep hole in the top of a high and large chamber is applied, which comprises:
a. the length of the big underground chamber is 20m, the width of the big underground chamber is 10m, the height of the big underground chamber is 10m, the arching height of the underground chamber is designed according to 1/3-1/4 of the width of the underground chamber, the arching height of the big underground chamber is determined to be 3m, the amount of the slag soil at the vault of the big underground chamber is determined according to the arching height of the vault of the underground chamber, and the height of a left side shaft 1 of the underground chamber is further determined.
b. And (3) upwards excavating to form a vertical raise 1 on the C-C surface at the right end of the chamber by adopting a one-time shaft forming method, wherein the construction direction of the vertical raise is shown as an arrow I-0 to facilitate the next operation. It should be noted that before the vertical raise is excavated, a hole with the size of 2.5m and the length of 2.5m should be excavated on the right side of the roadway C, and then the construction is vertically performed.
c. And (3) vertically excavating to the left side B-B surface of the right side of the chamber D (the excavation direction is shown by an arrow I-2) at the top of the vertical shaft 1 by using a drilling machine to form a central tunnel 2 and a safe passage 3 at the vault part of the chamber, wherein the height of the central tunnel 2 and the safe passage 3 is 2m, and the width of the central tunnel is 2 m.
d. The top zone 4 of the chamber D is enlarged. In the space taking the central tunnel 2 as a starting point, an air-leg rock drill is adopted, manual drilling is carried out, small-section advanced tunneling is carried out, secondary expanding brushing is carried out, and top pressing forming is carried out. The peripheral eyes adopt smooth surface control blasting, and each circulation footage is 2.5 m. The lower surface of the headspace 4 of the chamber D should be treated flat. In order to facilitate slag discharge, the slag soil is cleaned every time of construction circulation, the slag soil slides down from the right vertical shaft 1 and is discharged from the roadway C, and the arrow I-3 is the top expanding and brushing direction of the chamber D.
e. And (4) supporting the top of the chamber, cleaning the top 4 of the chamber, spraying concrete for supporting, and applying an anchor net to the joint surface for supporting.
f. Three rows of wedge-shaped holes 5 are arranged on the surface B-B at the right end of the chamber D, the row distance is 1m, each row of 30 holes has the hole diameter of 55mm, and the distance from the chamber boundary is 0.5 m. The wedge-shaped holes are symmetrically arranged on the center line of the chamber, in order to prevent undermining, the depth of the holes falling on the contour line of the chamber is 0.2m higher than the contour line, and the wedge-shaped holes provide free surfaces and compensation spaces for subsequent blasting of D rock bodies of the chamber.
g. On the lower surface of the roof 4 of the chamber, a deep hole 6 is drilled vertically downward using a rock drilling apparatus (down-the-hole drill, drill bit diameter 50 mm). The deep holes 6 are vertically and parallelly arranged, the aperture is 50mm, the hole depth is 7m, the row spacing and the interval are 1.0m-0.5m, (the two sides are wide, and the middle is dense).
h. And (3) through inspection of the deep hole 6, wherein before the deep hole 6 is subjected to charging blasting, through inspection of the deep hole 6 is carried out, an iron rod with the diameter of 50mm is placed into the deep hole 6, whether the deep hole 6 is through to a designed position is inspected, if the deep hole 6 does not meet the design requirement, a drilling machine is required to be used for hole washing, and if the deep hole 6 exceeds the designed hole depth by more than 0.2m, the hole needs to be plugged.
i. And (3) charging and blasting the wedge-shaped hole 5 and the vertical deep hole 6 on the right side of the chamber. Primary explosive and primary explosiveAll adopt
32mm No. 2 rock emulsion explosive is processed and manufactured, and 3 sections of the emulsion explosive are bundled together by using adhesive tapes. The wedge-shaped cutting hole 5 and the deep hole 6 adopt coupled charges (except peripheral holes), and the peripheral holes adopt axial uncoupled charges. The orifice is not charged with the powder alternately according to the 1.0-1.2 m. The method is characterized in that an intra-row differential initiation mode is adopted, a detonating cord is laid according to the depth of a hole and the whole length, 1-generation non-electric millisecond delay detonating tube detonator and 2 sections of emulsion are processed to manufacture a detonating explosive package, and the detonating explosive package is placed at an orifice to detonate the detonating cord and main explosive. And (3) detonating sequence: firstly, performing wedge hole blasting to form a wedge groove, and taking the left roadway B as compensation space and the chamber top 3 as compensation space. And then blasting the deep hole 6, wherein blasting of the deep hole 6 is carried out for multiple times, 3-4 rows are carried out each time, and the blank surface formed by the previous blasting is used as a compensation space. The direction of blasting is indicated by arrow I-3. After each blasting, the slag is properly discharged from the roadway B, and a required compensation space is provided for the next blasting. In order to prevent blasting impact from damaging nearby equipment, the millisecond detonator is adopted as the priming detonator, seismic waves can be reduced, secondary blasting is reduced, and blasting efficiency is improved. In the example, three rows of deep holes are blasted each time, and the damage of the former blasting element on the rock stratum forms a crack and a free surface with a certain width, so that conditions are provided for subsequent detonating.
j. Slag is discharged by a forklift in a grading way, and the corners are discharged by manual assistance.
k. And (5) supporting, namely performing anchor spraying support on the chamber D. After the deep hole 6 is blasted each time, the operation is organized immediately. The reserved waste rock is used as a platform, the chamber is cleaned by a high-pressure water gun, and then a special PZ-5B explosion-proof rigid grouting machine is adopted to perform primary spraying on the chamber. And after the last blasting and the initial blasting are finished, carrying out permanent guniting support on the underground chamber on a reserved gangue platform and a scaffold. For the area with poor stability of the rock stratum in the underground chamber, a jet-anchored net support mode is needed to be adopted for strengthening support.
l, forming a big chamber.
The invention is beneficial to forming a certain construction standard for the buildings of the underground chambers with different size requirements by classifying the underground chambers, and is beneficial to carrying out standardized treatment on the system of the buildings; determining the grade of the surrounding rock of the underground chamber by analyzing the surrounding rock data of the underground chamber, designing the arching height of the underground chamber according to the design dimensions such as length dimension, width dimension, height dimension, arch height dimension and the like, further determining the grade of the surrounding rock of the underground chamber, and finally determining the construction step of the underground chamber; the chamber constructed by the construction method of the vertical deep hole at the top of the tall chamber has the characteristics of simple slag discharging process, safety, environmental protection and good ventilation effect, can reduce the construction cost, reduce the safety risk and has the effect of easy quality control, and has good popularization and application space.
The prescription is prepared by the theory of compatibility of traditional Chinese medicines, and the kidney qi is sufficient and the essence and blood are vigorous by conditioning, so that the menstruation is naturally regulated; the medicine mainly fills essence and blood, supplements the spleen to fully nourish the blood source of the body, supports the spleen to invigorate the spleen and raise yang, soothes liver and regulates qi, regulates qi activity, dredges qi and blood, regulates qi and blood, assists in regulating menstruation and soothes liver to relieve depression; the traditional Chinese medicine composition is decocted into decoction for oral administration, so that the liver can be soothing, qi can be smoothened, qi and blood can be harmonized when the qi and blood are smooth, the spleen can be supported and yang can be risen, the qi can be leveled, the essence and blood can be vigorous when the yang is sufficient, the kidney qi can be sufficient when the essence and blood are vigorous, and the meridians can be smooth when the kidney qi is sufficient, so that the menstrual symptoms can be fundamentally relieved.
Although the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A top vertical deep hole construction method of a high and large chamber is characterized by comprising the following steps:
s1, dividing the chambers into different categories according to the size requirements of the chambers;
s2, analyzing the surrounding rock data of the underground chamber, and determining the grade of the surrounding rock of the underground chamber;
And S3, determining the construction steps of the underground chambers according to the surrounding rock grades of the underground chambers.
2. The method as claimed in claim 1, wherein the method for constructing the vertical deep hole at the top of the underground chamber comprises the following steps: at S1, the categories of the chambers are divided into two categories: firstly, the length size of the chamber is more than or equal to 30 mm; second, the chamber length is less than 30 mm.
3. The method as claimed in claim 2, wherein the method for constructing the vertical deep hole in the top of the footrill comprises the steps of: at S2, the relevant dimensions of the chamber are determined according to the chamber construction requirements, including the length dimension, width dimension, height dimension and arch dimension.
4. The method as claimed in claim 3, wherein the method for constructing the vertical deep hole at the top of the underground chamber comprises the following steps: and in S2, judging the type of the chamber construction according to the length of the chamber, and designing the arching height of the chamber according to 1/3-1/4 of the width of the chamber.
5. The method for constructing the vertical deep hole at the top of the underground chamber as claimed in claim 4, wherein: in S3, for the chamber with the length dimension more than or equal to 30mm, a one-time shaft forming method or a raise boring method is adopted at the left end and the right end of the chamber, and a vertical raise is constructed upwards to the lower side of the arch part of the excavated chamber; for chambers with length dimension less than 30mm, only the vertical raise is arranged on the left side of the chamber.
6. The method as claimed in claim 5, wherein the method for constructing the vertical deep hole at the top of the underground chamber comprises the following steps: in S3, for a chamber with the length dimension being more than or equal to 30mm, the top of the patio at the left end is linearly excavated to the patio at the right side of the chamber to form a central roadway and a safe channel at the top of the chamber; for the underground chamber with the length dimension less than 30mm, the underground chamber is drilled to the right side of the underground chamber from the vertical raise side at the left side of the underground chamber; expanding and brushing the top of the chamber, expanding and brushing the top of the chamber to a designed size from right to left according to the position of a central roadway by using a rock drill, treating the lower surface of an arch part of the chamber smoothly, and discharging muck from the roadway after the muck slides down from a right vertical raise.
7. The method as claimed in claim 6, wherein the method comprises the following steps: in S3, for the chamber with the length size of more than or equal to 30mm, supporting the top of the chamber, blasting and expanding the top of the chamber, spraying concrete supports at two ends of the chamber, and applying an anchor net spraying support on a joint surface; and for the chamber with the length dimension smaller than 30mm, after the construction of the top of the chamber is finished, the right side of the chamber is blasted by adopting a wedge-shaped blast hole to form a cutting groove.
8. The method as claimed in claim 7, wherein the method comprises the following steps: in S3, for a chamber with the length dimension of more than or equal to 30mm, arranging a vertical deep hole at one end of the chamber by taking the position of the raise as the center, wherein the deep holes are arranged vertically and parallelly; and for the chamber with the length dimension smaller than 30mm, completing the construction of the deep hole, and blasting one end of the chamber to the designed width by taking the vertical raise as a free surface to form a cutting groove.
9. The method as claimed in claim 8, wherein the method for constructing the vertical deep hole in the top of the footrill comprises the steps of: and S3, checking the through of the vertical deep hole, checking whether the vertical deep hole penetrates to a specified position or not before charging the vertical deep hole, and if the vertical deep hole is blocked, washing the hole by using a drilling machine.
10. The method as claimed in claim 9, wherein the method for constructing the vertical deep hole at the top of the underground chamber comprises the following steps: and in S3, blasting the chamber wedge-shaped groove and the vertical deep hole, wherein the blasting of the chamber forms the wedge-shaped groove, a free surface and a compensation space are provided for the subsequent vertical deep hole blasting, the deep holes are blasted in sequence from the cutting groove, a shovel car is used for carrying out fractional blasting, the corner parts are subjected to slag discharge by means of manual assistance, and the chamber is subjected to anchor-spraying support to form a large chamber.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569693A (en) * | 2015-12-28 | 2016-05-11 | 金诚信矿业管理股份有限公司 | Underground stable rock stratum large-scale chamber construction method applied to medium-length hole blasting |
| CN106285731A (en) * | 2016-08-05 | 2017-01-04 | 湖南科技大学 | The little courtyard radiant type of a kind of high Large chamber and the mixed construction method of step |
| CN106761757A (en) * | 2016-12-07 | 2017-05-31 | 江西理工大学 | A kind of full stage combination chisel it is quick-fried fall the efficient mining methods of ore deposit |
| CN108343455A (en) * | 2017-12-28 | 2018-07-31 | 浙江省隧道工程公司 | Binary channels underground chamber construction method |
| CN109236320A (en) * | 2018-09-05 | 2019-01-18 | 首钢滦南马城矿业有限责任公司 | A kind of underground chamber construction method |
| CN109322683A (en) * | 2018-10-24 | 2019-02-12 | 临沂会宝岭铁矿有限公司 | Underground Large chamber medium-length hole controls blasting construction method |
| CN112814685A (en) * | 2021-01-14 | 2021-05-18 | 白银有色集团股份有限公司 | Ultra-large section chamber tunneling blasting method |
| CN113530558A (en) * | 2021-08-20 | 2021-10-22 | 湖南涟邵建设工程(集团)有限责任公司 | Double-chute-inclined roadway combined layered construction method for big and high chamber |
-
2022
- 2022-02-14 CN CN202210133091.0A patent/CN114753873A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105569693A (en) * | 2015-12-28 | 2016-05-11 | 金诚信矿业管理股份有限公司 | Underground stable rock stratum large-scale chamber construction method applied to medium-length hole blasting |
| CN106285731A (en) * | 2016-08-05 | 2017-01-04 | 湖南科技大学 | The little courtyard radiant type of a kind of high Large chamber and the mixed construction method of step |
| CN106761757A (en) * | 2016-12-07 | 2017-05-31 | 江西理工大学 | A kind of full stage combination chisel it is quick-fried fall the efficient mining methods of ore deposit |
| CN108343455A (en) * | 2017-12-28 | 2018-07-31 | 浙江省隧道工程公司 | Binary channels underground chamber construction method |
| CN109236320A (en) * | 2018-09-05 | 2019-01-18 | 首钢滦南马城矿业有限责任公司 | A kind of underground chamber construction method |
| CN109322683A (en) * | 2018-10-24 | 2019-02-12 | 临沂会宝岭铁矿有限公司 | Underground Large chamber medium-length hole controls blasting construction method |
| CN112814685A (en) * | 2021-01-14 | 2021-05-18 | 白银有色集团股份有限公司 | Ultra-large section chamber tunneling blasting method |
| CN113530558A (en) * | 2021-08-20 | 2021-10-22 | 湖南涟邵建设工程(集团)有限责任公司 | Double-chute-inclined roadway combined layered construction method for big and high chamber |
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