CN110284888B - Construction method suitable for secondary repair of ore drawing system of deep and large draw shaft - Google Patents
Construction method suitable for secondary repair of ore drawing system of deep and large draw shaft Download PDFInfo
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- CN110284888B CN110284888B CN201910617150.XA CN201910617150A CN110284888B CN 110284888 B CN110284888 B CN 110284888B CN 201910617150 A CN201910617150 A CN 201910617150A CN 110284888 B CN110284888 B CN 110284888B
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- 238000010276 construction Methods 0.000 title claims abstract description 26
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 239000011435 rock Substances 0.000 claims abstract description 17
- 238000003860 storage Methods 0.000 claims abstract description 14
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 238000005553 drilling Methods 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 abstract description 3
- 239000003245 coal Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000694 effects Effects 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
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/06—Lining shafts; Linings therefor with iron or steel
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/006—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries by making use of blasting methods
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/008—Driving transverse tunnels starting from existing tunnels
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention relates to a construction method suitable for secondary repair of a deep and large ore drawing system of a draw shaft, which aims at solving the problem that when the faults of a vibration ore drawing machine need to be repaired during the transportation of the draw shaft in non-coal mine mountain areas, unsafe factors such as well mouth rock fall and well wall rock peeling can occur due to the deep draw shaft, and the personal safety of personnel performing the repair work of the vibration ore drawing machine at the bottom of the draw shaft is threatened. Horizontal annular slot is dug to ore storage section top at the drop shaft to insert the arc channel-section steel and consolidate, regard as the impetus with this, closely lay horizontal channel-section steel and form the baffle, block the stone that drops of drop above the drop shaft, ensure that the drop shaft bottom vibrates the personnel personal safety of ore drawing machine repair work. After the repair is completed, the trapezoidal channel steel is withdrawn, the arc channel steel is reserved, and the measure roadway outlet is closed, so that the next vibration ore drawing machine can be repaired in time when in fault, the repair period is shortened, and the economic loss is reduced.
Description
The technical field is as follows:
the invention relates to a construction method suitable for secondary repair of a deep and large ore pass ore drawing system.
Background art:
the vibrating ore drawing machine is one kind of vibrating inertial vibrating ore drawing apparatus with vibrating motor as the exciting source and is one ideal apparatus for drawing ore and other material, feeding or loading. Because the vibration ore drawing machine is positioned at the bottom of the drop shaft, the depth of the deep and large drop shaft is generally over 500m, and rocks have strong impact force when falling to the bottom of the drop shaft from a well mouth, and the vibration ore drawing machine generates cracks, damages, faults and the like due to the fact that the rocks bear the large impact force for a long time and needs to be repaired in time.
However, when the fault of the vibratory ore drawing machine needs to be repaired, because the chute is deeper, workers directly carry out the repairing work of the vibratory ore drawing machine at the bottom of the chute, unsafe factors such as rock falling of a wellhead, rock peeling of a well wall and the like can occur, and the personal safety of workers is seriously threatened.
The invention content is as follows:
the invention aims at improving the problems in the prior art, namely the invention aims to provide a construction method suitable for secondary restoration of a deep and large ore pass ore drawing system, which is reasonable in design and can effectively guarantee the personal safety of workers in the country.
In order to achieve the purpose, the invention adopts the technical scheme that: a construction method suitable for secondary repair of a deep and large ore pass ore drawing system comprises the following steps:
step S1: adopting a rock drilling and blasting mode to drill a slope way from a large transportation roadway to serve as a measure roadway, wherein an outlet of the measure roadway is arranged above an ore storage section of the ore pass;
step S2: using a pneumatic pick to drill rock, respectively and horizontally cutting a section of arc-shaped groove along the inner wall of the drop shaft from two wall corners at the outlet of the measure roadway, wherein the opening of the arc-shaped groove faces the center of the drop shaft;
step S3: prefabricating a plurality of sections of arc-shaped channel steel with the curvature radius consistent with the outer diameter of the arc-shaped groove;
step S4: prefabricating a plurality of sections of channel steel with different lengths, obliquely processing two ends of each section of channel steel to form a certain angle, and processing the channel steel into trapezoidal channel steel which is internally connected with the outer ring of the arc-shaped groove;
step S5: taking two sections of arc-shaped channel steel, respectively placing the two sides of the exit of the measure roadway into the arc-shaped groove, wherein the opening of the arc-shaped channel steel faces the center of the chute and is placed in close contact with the rock wall;
step S6: selecting a plurality of sections of trapezoidal channel steel, wherein the openings of the plurality of sections of trapezoidal channel steel are downward and are tightly laid, and two ends of each section of trapezoidal channel steel are clamped in the arc-shaped grooves and are erected in the chute;
step S7: welding all the arc-shaped channel steels and the trapezoid-shaped channel steels into a whole to form a stable working platform;
step S8: the constructor continues to cut a section of arc-shaped groove towards both sides of the measure roadway exit on the working platform formed in the step S7;
step S9: repeating the processes from the step S5 to the step S8 until the arc-shaped grooves are closed to form an annular groove, and the whole working platform stably and completely covers the cross section of the orepass to form a baffle;
step S10: removing ores in an ore storage section from the bottom of the ore pass, and repairing the vibration ore drawing machine;
step S11: and after the vibration ore drawing machine is repaired, withdrawing all the trapezoidal channel steel, reserving the arc channel steel, and closing the measure roadway outlet.
Further, in step S1, the gradient of the measure roadway is 16%, the exit of the measure roadway is located 2m above the mine storage section, and the exit of the measure roadway is provided with a horizontal section of 5 m.
Further, in step S2, the cut arc-shaped groove has a width of 30cm, a height of 30cm and a length of 1 m.
Further, in step S3, the arc length of the arc-shaped channel steel is 1m, and the curvature radius is 2.8 m.
Further, in step S4, the lengths of the sections of trapezoidal channel steel are from 3.2m to 5.6 m.
Further, in step S8, the length of the arc-shaped groove to be continued to be drilled is 1 m.
Further, in step S9, the construction of the working platform is divided into a plurality of cycles, each cycle sequentially includes trench digging, arc channel steel placing, trapezoidal channel steel laying and channel steel welding, one cycle provides the working platform for the next construction, the construction range is gradually expanded until the whole working platform completely covers the cross section of the chute to form the baffle.
Compared with the prior art, the invention has the following effects: the horizontal trapezoidal channel steel is tightly paved to form a baffle to prevent falling stones above the chute, so that the personal safety of personnel performing repair work of the vibratory ore drawing machine at the bottom of the chute is ensured; after the repair is completed, the trapezoidal channel steel is withdrawn, the arc channel steel is reserved, and the measure roadway outlet is closed, so that the next vibration ore drawing machine can be repaired in time when in fault, the repair period is shortened, and the economic loss is reduced.
Description of the drawings:
FIG. 1 is a schematic construction of an embodiment of the present invention;
FIG. 2 is a schematic front view of the construction of the baffles above the mine storage section;
FIG. 3 is a schematic diagram of a side view configuration of a baffle above the mine storage section;
FIG. 4 is a schematic view of a top view configuration of the baffle above the mine storage section;
FIG. 5 is a schematic diagram before laying of the trapezoidal channel steel;
FIG. 6 is a schematic diagram before the arc channel steel is laid;
FIG. 7 is a first schematic view of a process for laying the trapezoidal channel steel and the arc channel steel;
fig. 8 is a schematic diagram of a laying process of the trapezoidal channel steel and the arc channel steel.
In the figure:
1-pass shaft; 2-measure lane; 21-measure lane entry; 22-measure lane exit; 23-horizontal section; 3-a transportation main lane; 31-exit of the main haulage roadway; 4-a baffle plate; 41-annular groove; 42-arc channel steel; 43-trapezoidal channel steel; 5-ore storage section; 6-a bottom hole funnel; 7-vibrating ore drawing machine.
The specific implementation mode is as follows:
the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 8, the construction method for secondary repair of the ore drawing system suitable for the deep and large ore pass comprises the following steps:
step S1: a slope way is dug from a large transportation roadway 3 in a rock drilling and blasting mode to serve as a measure roadway 2; the gradient of the measure roadway 2 is 16 percent, and the outlet 22 of the measure roadway 2 is arranged 2m above the ore storage section of the orepass, so that the high-altitude operation is prevented and the work amount of the measure roadway is reduced; leaving a 5m horizontal section 23 at the exit 22 of the measure roadway for temporarily placing materials and equipment;
step S2: using a pneumatic pick to drill rock, respectively and horizontally drilling a section of arc-shaped groove along the inner wall of the orepass 1 from two wall corners at the measure roadway outlet 22, wherein the opening of the arc-shaped groove faces to the center of the orepass to provide an acting point for conveniently laying channel steel horizontally; the width of the arc-shaped groove is 30cm, the height of the arc-shaped groove is 30cm, and the length (arc length) of the arc-shaped groove is 1 m;
step S3: cutting a plurality of channel steel with the length of 1m by using a cutting machine in advance, and bending the channel steel into an arc shape by using a plate bending machine to form an arc-shaped channel steel 42, wherein the curvature radius of the arc-shaped channel steel 42 is consistent with the outer diameter of an arc-shaped groove and is 2.8 m;
step S4: cutting a plurality of sections of channel steel with different lengths from 3.2m to 5.6m in advance by using a cutting machine, obliquely processing two ends of each section of channel steel to form a certain angle, and processing the channel steel into trapezoidal channel steel 43 internally connected with the outer ring of the arc-shaped groove;
step S5: taking two sections of arc-shaped channel steel 42 prefabricated in the step S3, respectively placing the two sections of arc-shaped channel steel 42 into arc-shaped grooves from two sides of the measure roadway outlet 22, and placing the opening of the arc-shaped channel steel facing the center of the ore pass 1 and clinging to the rock wall;
step S6: selecting a plurality of sections of the trapezoidal channel steel 43 prefabricated in the step S4, wherein the openings of the plurality of sections of the trapezoidal channel steel 43 are downward and tightly paved, and two ends of each section of the trapezoidal channel steel 43 are clamped in the arc-shaped groove and are erected in the chute 1;
step S7: welding all the arc-shaped channel steels 42 and the trapezoid-shaped channel steels 43 into a whole to form a stable working platform;
step S8: the constructor continues to cut a section of arc-shaped groove towards two sides of the measure roadway outlet on the working platform formed in the step S7, and the length of the arc-shaped groove which is continuously cut is 1 m;
step S9: repeating the processes from the step S5 to the step S8 until the arc-shaped grooves are closed to form the annular groove 41, and the whole working platform stably and completely covers the cross section of the orepass 1 to form the baffle 4;
step S10: removing ores in an ore storage section from the bottom of the ore pass 1, and repairing the vibration ore drawing machine;
step S11: after the vibratory ore drawing machine is repaired, all trapezoidal channel steel is withdrawn, the arc channel steel is reserved, and the measure roadway is closed, so that the next vibratory ore drawing machine can be repaired in time when the fault occurs, the repairing period is shortened, and the economic loss is reduced.
In this embodiment, the arc channel steel 42 and the trapezoidal channel steel 43 both adopt No. 20 channel steel.
In this embodiment, in step S9, because the length range of construction is limited, the construction of the working platform is divided into a plurality of cycles, each cycle is to excavate the groove, put into the arc channel steel, lay the trapezoidal channel steel and weld the channel steel in order, and a cycle provides the working platform for the next construction, enlarges the construction range one by one until the whole working platform completely covers the chute section to form the baffle.
The invention has the advantages that: when the fault of the vibratory ore drawing machine needs to be repaired in the transportation of the ore drawing machine under the non-coal mine mountain region, unsafe factors such as rock falling of a wellhead, rock peeling of a well wall and the like can occur due to the fact that the ore drawing machine is located in a deeper ore drawing shaft, and personal safety of personnel performing the repairing work of the vibratory ore drawing machine at the bottom of the ore drawing shaft is threatened. Horizontal annular slot is dug to ore storage section top at the drop shaft to insert the arc channel-section steel and consolidate, regard as the impetus with this, closely lay horizontal channel-section steel and form the baffle, block the stone that drops of drop above the drop shaft, ensure that the drop shaft bottom vibrates the personnel personal safety of ore drawing machine repair work. After the repair is completed, the trapezoidal channel steel is withdrawn, the arc channel steel is reserved, and the measure roadway outlet is closed, so that the next vibration ore drawing machine can be repaired in time when in fault, the repair period is shortened, and the economic loss is reduced.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (7)
1. A construction method suitable for secondary repair of a deep and large ore pass ore drawing system is characterized by comprising the following steps: the method comprises the following steps:
step S1: adopting a rock drilling and blasting mode to drill a slope way from a large transportation roadway to serve as a measure roadway, wherein an outlet of the measure roadway is arranged above an ore storage section of the ore pass;
step S2: using a pneumatic pick to drill rock, respectively and horizontally cutting a section of arc-shaped groove along the inner wall of the drop shaft from two wall corners at the outlet of the measure roadway, wherein the opening of the arc-shaped groove faces the center of the drop shaft;
step S3: prefabricating a plurality of sections of arc-shaped channel steel with the curvature radius consistent with the outer diameter of the arc-shaped groove;
step S4: prefabricating a plurality of sections of channel steel with different lengths, obliquely processing two ends of each section of channel steel to form a certain angle, and processing the channel steel into trapezoidal channel steel which is internally connected with the outer ring of the arc-shaped groove;
step S5: taking two sections of arc-shaped channel steel, respectively placing the two sides of the exit of the measure roadway into the arc-shaped groove, wherein the opening of the arc-shaped channel steel faces the center of the chute and is placed in close contact with the rock wall;
step S6: selecting a plurality of sections of trapezoidal channel steel, wherein the openings of the plurality of sections of trapezoidal channel steel are downward and are tightly laid, and two ends of each section of trapezoidal channel steel are clamped in the arc-shaped grooves and are erected in the chute;
step S7: welding all the arc-shaped channel steels and the trapezoid-shaped channel steels into a whole to form a stable working platform;
step S8: the constructor continues to cut a section of arc-shaped groove towards both sides of the measure roadway exit on the working platform formed in the step S7;
step S9: repeating the processes from the step S5 to the step S8 until the arc-shaped grooves are closed to form an annular groove, and the whole working platform stably and completely covers the cross section of the orepass to form a baffle;
step S10: removing ores in an ore storage section from the bottom of the ore pass, and repairing the vibration ore drawing machine;
step S11: and after the vibration ore drawing machine is repaired, withdrawing all the trapezoidal channel steel, reserving the arc channel steel, and closing the measure roadway outlet.
2. The construction method suitable for secondary repair of the ore drawing system of the deep and large orepass according to claim 1, wherein: in step S1, the measure roadway has a gradient of 16%, the exit of the measure roadway is located 2m above the mine storage section, and the exit of the measure roadway is provided with a horizontal section of 5 m.
3. The construction method suitable for secondary repair of the ore drawing system of the deep and large orepass according to claim 1, wherein: in step S2, the arc-shaped groove is cut to have a width of 30cm, a height of 30cm, and a length of 1 m.
4. The construction method suitable for secondary repair of the ore drawing system of the deep and large orepass according to claim 1, wherein: in step S3, the arc length of the arc-shaped channel steel is 1m, and the radius of curvature is 2.8 m.
5. The construction method suitable for secondary repair of the ore drawing system of the deep and large orepass according to claim 1, wherein: in step S4, the lengths of the sections of trapezoidal channel steel are from 3.2m to 5.6 m.
6. The construction method suitable for secondary repair of the ore drawing system of the deep and large orepass according to claim 1, wherein: in step S8, the arc-shaped groove to be continued to be drilled has a length of 1 m.
7. The construction method suitable for secondary repair of the ore drawing system of the deep and large orepass according to claim 1, wherein: in step S9, the construction of the work platform is divided into a plurality of cycles, each cycle sequentially includes trench cutting, arc channel steel placing, trapezoidal channel steel laying and channel steel welding, one cycle provides the work platform for the next construction, and the construction range is gradually expanded until the whole work platform completely covers the cross section of the ore pass to form a baffle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910617150.XA CN110284888B (en) | 2019-07-10 | 2019-07-10 | Construction method suitable for secondary repair of ore drawing system of deep and large draw shaft |
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| CN201910617150.XA CN110284888B (en) | 2019-07-10 | 2019-07-10 | Construction method suitable for secondary repair of ore drawing system of deep and large draw shaft |
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| CN110284888A CN110284888A (en) | 2019-09-27 |
| CN110284888B true CN110284888B (en) | 2020-06-12 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SU672347A1 (en) * | 1977-12-14 | 1979-07-05 | Криворожский Ордена Трудового Красного Знамени Горнорудный Институт | Safety device for deepening vertical mine shafts |
| RU2249697C1 (en) * | 2003-11-27 | 2005-04-10 | Еремин Георгий Михайлович | Method for open extraction of mineral resources deposits |
| JP5634779B2 (en) * | 2010-07-20 | 2014-12-03 | Ｊｆｅシビル株式会社 | Lifting method and lifting device for work floor |
| SE1251245A1 (en) * | 2012-11-02 | 2014-05-03 | Sapa Ab | Platform and methods for mounting in the wind turbine tower |
| JP6204153B2 (en) * | 2013-11-11 | 2017-09-27 | 前田建設工業株式会社 | Lined lining concrete construction method and shaft platform |
| PL68642Y1 (en) * | 2014-05-19 | 2016-10-31 | Akademia Górniczohutnicza Im Stanisława Staszica W Krakowie | Artificial bottom of a mining shaft |
| CN205189909U (en) * | 2015-11-24 | 2016-04-27 | 汶上义桥煤矿有限责任公司 | Mine is down with raising roof temporary support device |
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