Construction method of mine draw shaft inspection well system

Abstract

The invention discloses a construction method of a mine draw shaft inspection well system, and belongs to the field of mine engineering construction.The construction method is characterized by comprising the steps that two inspection well roadways surrounding a draw shaft are spirally excavated upwards from the bottom of the draw shaft, the top ends of the two inspection well roadways extend to the position above the horizontal plane of the top of the draw shaft, and the two inspection well roadways can be symmetrically arranged; the inspection well roadway is composed of a middle-section inclined roadway and a buffer platform which are alternately connected, and the gradient of the middle-section inclined roadway is 45 degrees and the like; an inspection gate way communicated with the draw shaft is horizontally excavated at the preset height position of the inspection shaft roadway, two inspection gate ways can be in one group, and the two inspection gate ways in the same group are symmetrically arranged relative to the draw shaft; and installing a sealing door in the inspection gate way, and the like. The technical effects that the mine draw shaft inspection and maintenance process is optimized, the safety of constructors is guaranteed, and the inspection work quality and speed are effectively improved are achieved.

Description

Technical Field

[0001] The present application relates to the field of mine engineering construction, and particularly to a construction method for a mine shaft inspection well system. Background Art

[0002] As a roadway for discharging ore from top to bottom by its own weight, the mine shaft plays an important role in mine production. It is an effective way for low-cost downward transportation of ore and an indispensable key link in the entire mine development system. Especially in mines developed by adit or shaft, its advantages are more prominent. The ore discharging of the shaft has the characteristics of simplicity and reliability. In the case of a large mine ratio and stable ore-bearing strata, compared with road truck transportation, it can save a large number of transportation equipment, reduce power and material consumption, and effectively promote the efficient production of the mine.

[0003] In the past, for the construction of the mine shaft inspection well system, various means were usually adopted. A common method is to vertically excavate a shaft around the shaft to reach different depths of the shaft for inspection work. Another method is to drill an inclined hole from the ground to the predetermined depth of the shaft, and then carry out local roadway excavation to achieve the inspection of the shaft condition. In addition, there is also a method of building a temporary scaffold on the inner wall of the shaft for workers to climb up for manual inspection. These traditional construction methods have been widely used for a certain period and provided a basic solution for the inspection of mine shafts.

[0004] However, the vertical shaft excavation not only has high costs, but also has a long construction period and great difficulties in later maintenance. The method of drilling inclined holes from the ground has poor flexibility and it is difficult to comprehensively cover all parts of the shaft. Building a temporary scaffold not only has a very high risk factor, but also has a very limited inspection range and cannot effectively inspect the overall situation of the shaft. Summary of the Invention

[0005] In order to optimize the inspection and maintenance process of the mine shaft, ensure the safety of construction personnel, and effectively improve the quality and speed of inspection work, the present invention provides a construction method for a mine shaft inspection well system.

[0006] The construction method for a mine shaft inspection well system provided by the present invention adopts the following technical solutions: A construction method for a mine shaft inspection well system includes the following steps: I. Spirally excavate two inspection well roadways around the shaft from the bottom of the shaft upwards, and the top ends of the inspection well roadways extend above the horizontal plane of the top of the shaft; II. Horizontally excavate an inspection roadway connecting the shaft at a preset height position of the inspection well roadway; III. Install a sealing door in the inspection roadway.

[0007] By adopting the above technical solution, a inspection shaft roadway that spirally excavates upward from the bottom of the self-flow shaft, surrounds the self-flow shaft, and has its top extending above the horizontal plane of the top of the self-flow shaft can realize the construction of a comprehensive inspection passage for the self-flow shaft; horizontally excavating a inspection level roadway connecting the self-flow shaft at a preset height position in the inspection shaft roadway can facilitate the staff to enter the self-flow shaft for inspection work; installing a sealing door in the inspection level roadway can prevent harmful gases, dust, etc. in the self-flow shaft from leaking into the inspection level roadway and the inspection shaft roadway, ensuring the safety and health of the staff.

[0008] Preferably, in step one, the two inspection shaft roadways are symmetrically arranged.

[0009] By adopting the above technical solution, the structure of the entire inspection shaft system is more balanced and stable, which is beneficial to the safety during the construction process and the subsequent comprehensive inspection work of the self-flow shaft.

[0010] Preferably, in step one, each inspection shaft roadway is composed of alternately connected middle-section inclined lanes and buffer platforms, and the extending direction of the middle-section inclined lane is perpendicular to the extending direction of the adjacent middle-section inclined lane.

[0011] By adopting the above technical solution, while the inspection shaft roadway has a certain upward slope, the buffer platform plays a buffering role, and the mutually perpendicular middle-section inclined lanes can more flexibly adapt to the spatial environment around the self-flow shaft, reducing the construction difficulty and the impact on the surrounding rock mass. The included angle design of the two middle-section inclined lanes also facilitates dealing with emergencies.

[0012] Preferably, in step one, the minimum distance between the inner side of the inspection shaft roadway and the side wall of the self-flow shaft is 10 meters.

[0013] By adopting the above technical solution, a suitable distance between the inspection shaft roadway and the self-flow shaft is ensured, which not only avoids being affected by the self-flow shaft operation due to too close a distance, but also avoids increasing the construction cost and the personnel passage distance due to too far a distance.

[0014] Preferably, in step one, the slope of the middle-section inclined lane is 45 degrees.

[0015] By adopting the above technical solution, the middle-section inclined lane with a 45-degree slope can make the passage of personnel and equipment in the inspection shaft roadway more labor-saving and efficient, and at the same time this slope is also beneficial to drainage, reducing the water accumulation situation in the roadway.

[0016] Preferably, in step two, the two inspection level roadways are in a group, and within the same group, the two inspection level roadways are respectively located on the two inspection shaft roadways, and the two inspection level roadways in the same group are symmetrically arranged with respect to the self-flow shaft.

[0017] By adopting the above technical solution, the layout of the inspection crossheading is made more reasonable and standardized, which is conducive to efficiently carrying out the inspection work of the ore pass, ensuring the inspection effect and quality. At the same time, the symmetric setting helps to maintain the stability and balance of the overall structure of the system.

[0018] Preferably, in step two, the distance between two adjacent inspection crossheadings on the same inspection roadway is 24 meters.

[0019] By adopting the above technical solution, the layout of the inspection crossheading can be reasonably planned, ensuring the comprehensiveness and effectiveness of the inspection of the ore pass. At the same time, it avoids the problems of resource waste or inspection blind areas caused by over-dense or over-sparse setting of the inspection crossheadings.

[0020] Preferably, in step one, the inspection roadway is supported by plain concrete, and the thickness of the plain concrete is 200 mm.

[0021] By adopting the above technical solution, the stability and durability of the inspection roadway can be enhanced, effectively resisting the damage of external factors to the roadway and extending the service life of the inspection roadway.

[0022] Preferably, in step one, an air duct and a water pipe are installed in the inspection roadway, and the running directions of both the air duct and the water pipe are the same as that of the inspection roadway.

[0023] By adopting the above technical solution, the air circulation and water supply in the inspection roadway can be ensured, and it is convenient for the laying and maintenance of the air duct and the water pipe along the roadway, making the facility layout more reasonable and efficient.

[0024] Preferably, in step one, a pedestrian path and a drainage ditch are arranged in the inspection roadway, a railing is installed between the pedestrian path and the drainage ditch, and the top of the drainage ditch is lower than the road surface of the pedestrian path.

[0025] By adopting the above technical solution, the safety of personnel walking can be ensured, preventing personnel from falling into the drainage ditch. At the same time, the reasonable layout is convenient for drainage.

[0026] In summary, the present invention has the following beneficial effects: 1. The inspection roadway that spirally excavates around the ore pass from the bottom of the ore pass and whose top exceeds the horizontal plane of the top of the ore pass can build a channel for comprehensive inspection of the ore pass; the inspection crossheading that horizontally excavates and connects the ore pass at a preset height in the inspection roadway is convenient for the staff to enter the ore pass for inspection; installing a sealing door in the inspection crossheading can prevent harmful gases, dust, etc. in the ore pass from leaking into the inspection crossheading and the inspection roadway, ensuring the safety and health of personnel. At the same time, it avoids vertical excavation of the shaft, reducing the construction cost and maintenance difficulty and shortening the construction period.

[0027] 2. The spiral inspection roadway is equipped with a drainage ditch, an air duct and a water pipe, which is more conducive to solving the problems of water use and drainage. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the ore pass inspection shaft system.

[0029] Figure 2 It is a top view of the inspection shaft roadway.

[0030] Figure 3 It is a longitudinal sectional view of the inspection shaft roadway.

[0031] Description of the reference numerals: 1. Ore pass; 2. Bunker; 3. Chamber; 4. Inspection shaft roadway; 41. Pedestrian path; 42. Drainage ditch; 43. Rail; 44. Air duct; 45. Water pipe; 46. Lighting lamp; 5. Intermediate inclined roadway; 6. Buffer platform; 7. Inspection level roadway. Specific implementation manners

[0032] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this specification. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments.

[0033] In the description of the embodiments of this application, words such as "for example" or "for instance" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as "for example" or "for instance" in the embodiments of this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "for example" or "for instance" aims to present relevant concepts in a specific manner.

[0034] In the description of the embodiments of this application, the meaning of the term "a plurality of" refers to two or more. For example, a plurality of systems refers to two or more systems, and a plurality of screen terminals refers to two or more screen terminals. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the technical features indicated. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The terms "include", "comprise", "have" and their variants all mean "including but not limited to", unless otherwise particularly emphasized in other ways.

[0035] A construction method for a mine ore pass inspection shaft system, referring to Figure 1, including the following steps: 1. Spirally excavating two inspection shafts 4 surrounding the chute 1 from the bottom of the chute 1, and the tops of the inspection shafts 4 extend to above the horizontal plane of the top of the chute 1; 2. Horizontally excavating an inspection tunnel 7 connected to the chute 1 at a preset height position of the inspection shafts 4; 3. Installing a sealed door in the inspection tunnel 7.

[0036] This construction process can avoid the high cost, long cycle, and limited inspection range of traditional construction methods. Compared with vertical shaft excavation, this spiral excavation method greatly reduces the construction cost and cycle; and the establishment of multiple inspection lanes 7 can more comprehensively inspect the chute 1, solving the problem of insufficient inspection range when drilling inclined holes on the ground and setting up temporary scaffolding.

[0037] Reference Figure 2 In step one, two inspection shafts 4 are symmetrically arranged, and the minimum distance between the inner side of the inspection shaft 4 and the side wall of the chute 1 is 10 meters.

[0038] The structure of the entire inspection well system is more balanced and stable, which is conducive to the safety of the construction process and the subsequent comprehensive inspection of the well 1.

[0039] Reference Figure 3 In step 1, the inspection shaft tunnel 4 is supported by plain concrete, and the thickness of the plain concrete is 200 mm. Under some special geological conditions, the thickness needs to be adjusted according to the actual situation.

[0040] The stability and durability of the inspection shaft and tunnel 4 are enhanced, the damage to the shaft and tunnel caused by external factors is effectively resisted, and the service life of the inspection shaft and tunnel 4 is extended.

[0041] Reference Figure 1 In step 1, each inspection shaft lane 4 is composed of alternately connected middle inclined lanes 5 and buffer platforms 6. The extension direction of the middle inclined lane 5 is perpendicular to the extension direction of the adjacent middle inclined lane 5, wherein the slope of the middle inclined lane 5 is 45 degrees.

[0042] The inspection shaft tunnel 4 has a certain ascending slope, and the buffer platform 6 plays a buffering role. The mutually perpendicular middle inclined tunnels 5 can more flexibly adapt to the spatial environment around the chute 1, reducing the construction difficulty and the impact on the surrounding rock mass. The angle design of the two middle inclined tunnels 5 is also convenient for dealing with emergencies.

[0043] Reference Figure 3 In step 1, an air duct 44 and a water pipe 45 are installed in the inspection shaft 4. The direction of the air duct 44 and the direction of the water pipe 45 are the same as the direction of the inspection shaft 4, which is used to ensure air circulation and water supply in the inspection shaft 4.

[0044] Reference Figure 3, in Step 1, a footpath 41 and a drainage ditch 42 are provided in the inspection roadway 4. A railing 43 is installed between the footpath 41 and the drainage ditch 42, and the top of the drainage ditch 42 is lower than the road surface of the footpath 41. A plurality of lighting lamps 46 are installed in the inspection roadway 4, and the plurality of lighting lamps 46 are distributed at intervals along the inspection roadway 4 for lighting in the inspection roadway 4.

[0045] Refer to Figure 1 , in Step 2, a plurality of inspection crossheadings 7 on the same inspection roadway 4 are evenly distributed, and the distance between every two adjacent inspection crossheadings 7 is 24 meters. Since the inclination angle of the mid-section inclined roadway 5 is 45 degrees, the vertical distance between two adjacent inspection crossheadings 7 on the same inspection roadway 4 is 12 meters.

[0046] Refer to Figure 1 , in Step 2, two inspection crossheadings 7 form a group. The two inspection crossheadings 7 in the same group are respectively located on two inspection roadways 4, and the two inspection crossheadings 7 in the same group are symmetrically arranged with respect to the ore pass 1.

[0047] Reasonably plan the layout of the inspection crossheadings 7 to ensure the comprehensiveness and effectiveness of the inspection of the ore pass 1, and at the same time avoid problems of resource waste or inspection blind spots caused by too dense or too sparse arrangement of the inspection crossheadings 7.

[0048] Refer to Figure 1 , the sealing door can be made of metal materials such as stainless steel and carbon steel, and these materials have good strength and sealing performance. During installation, it is necessary to ensure the tight connection between the sealing door and the inspection crossheading 7 to reduce leakage.

[0049] The working principle of this application is as follows: This construction method greatly improves the construction of the mine ore pass inspection well system by means of unique spiral excavation of the inspection roadway 4 and setting of the inspection crossheading 7 and the sealing door. Compared with traditional methods such as vertical shaft excavation and inclined hole drilling on the ground, it reduces the construction cost and cycle and improves the construction efficiency. At the same time, the setting of a plurality of inspection crossheadings 7 makes the inspection of the ore pass 1 more comprehensive and avoids potential safety hazards caused by limited inspection scope. The installation of the sealing door ensures the safety of the inspection personnel and the environmental quality in the inspection crossheading 7.

[0050] The embodiments of this specific implementation manner are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A construction method of a mine shaft inspection well system, characterized in that: It includes the following steps: First, spiral excavation is carried out upwards from the bottom of the self-dumping shaft (1) to form two inspection roadway (4) channels surrounding the self-dumping shaft (1), and the top ends of the inspection roadway (4) channels extend above the horizontal plane at the top of the self-dumping shaft (1); Second, at a preset height position in the inspection roadway (4) channels, a horizontal inspection drift (7) connecting the self-dumping shaft (1) is excavated; Third, a sealing door is installed in the inspection drift (7).

2. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step one, the two inspection roadway (4) channels are symmetrically arranged.

3. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step one, each inspection roadway (4) channel is composed of alternately connected middle-section inclined lanes (5) and buffer platforms (6), and the extending direction of the middle-section inclined lane (5) is perpendicular to the extending direction of the adjacent middle-section inclined lane (5).

4. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step one, the minimum distance between the inner side of the inspection roadway (4) and the side wall of the self-dumping shaft (1) is 10 meters.

5. The construction method of a mine shaft inspection well system according to claim 3, characterized in that: In step one, the slope of the middle-section inclined lane (5) is 45 degrees.

6. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step two, the two inspection drifts (7) form a group. The two inspection drifts (7) in the same group are respectively located on the two inspection roadway (4) channels, and the two inspection drifts (7) in the same group are symmetrically arranged with respect to the self-dumping shaft (1).

7. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step two, the distance between two adjacent inspection drifts (7) on the same inspection roadway (4) channel is 24 meters.

8. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step one, the inspection roadway (4) is supported by plain concrete, and the thickness of the plain concrete is 200 mm.

9. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step one, an air duct (44) and a water pipe (45) are installed in the inspection roadway (4), and the running directions of the air duct (44) and the water pipe (45) are the same as the running direction of the inspection roadway (4).

10. The construction method of a mine shaft inspection well system according to claim 1, characterized in that: In step one, a pedestrian path (41) and a drainage ditch (42) are arranged in the inspection roadway (4). A railing (43) is installed between the pedestrian path (41) and the drainage ditch (42), and the top of the drainage ditch (42) is lower than the road surface of the pedestrian path (41).

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