CN114592870A - Construction method of underground vertical coal bunker and underground vertical coal bunker tunneling system - Google Patents
Construction method of underground vertical coal bunker and underground vertical coal bunker tunneling system Download PDFInfo
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- CN114592870A CN114592870A CN202210299691.4A CN202210299691A CN114592870A CN 114592870 A CN114592870 A CN 114592870A CN 202210299691 A CN202210299691 A CN 202210299691A CN 114592870 A CN114592870 A CN 114592870A
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- 239000003245 coal Substances 0.000 title claims abstract description 97
- 230000005641 tunneling Effects 0.000 title claims abstract description 54
- 238000010276 construction Methods 0.000 title claims abstract description 40
- 230000033001 locomotion Effects 0.000 claims abstract description 54
- 239000002893 slag Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000009412 basement excavation Methods 0.000 claims description 69
- 238000005520 cutting process Methods 0.000 claims description 61
- 239000003921 oil Substances 0.000 claims description 56
- 239000000346 nonvolatile oil Substances 0.000 claims description 13
- 230000007246 mechanism Effects 0.000 description 13
- 238000005422 blasting Methods 0.000 description 6
- 238000005553 drilling Methods 0.000 description 6
- 238000010297 mechanical methods and process Methods 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/03—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws
- E21D1/06—Sinking shafts mechanically, e.g. by loading shovels or loading buckets, scraping devices, conveying screws with shaft-boring cutters
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D1/00—Sinking shafts
- E21D1/08—Sinking shafts while moving the lining downwards
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- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention provides a construction method of an underground vertical coal bunker and an underground vertical coal bunker tunneling system, wherein the construction method of the underground vertical coal bunker comprises the following steps: step S10, digging a slag chute guide hole; step S20, excavating an initial foundation pit; step S30, installing an underground vertical coal bunker tunneling system in the starting foundation pit; step S40, the underground vertical coal bunker tunneling system tunnels the underground vertical coal bunker from top to bottom; step S50, supporting the wall of the shaft of the underground vertical coal bunker; the underground vertical coal bunker tunneling system comprises a tunneling machine and a vertical motion system, wherein the tunneling machine is used for tunneling, the tunneling machine is installed on the vertical motion system, and the vertical motion system can drive the tunneling machine to move vertically. By the method and the device, the technical problems of high labor intensity, long well construction period and low construction efficiency in underground coal bunker construction are solved.
Description
Technical Field
The invention relates to the technical field of underground vertical coal bunker construction, in particular to a construction method of an underground vertical coal bunker and an underground vertical coal bunker tunneling system.
Background
The underground coal bunker is a place for temporarily storing coal at the bottom of a coal mine shaft, and has important significance for ensuring the continuity of coal mine production. At present, the main construction method of the underground coal bunker is to firstly use a raise boring machine to drill a slag sliding hole, and then use drilling and blasting to carry out secondary expanding excavation so as to meet the design size requirement. The drilling and blasting method has large potential safety hazard, high labor intensity of workers, long well construction period and low construction efficiency.
Disclosure of Invention
The invention aims to provide a construction method of an underground vertical coal bunker and an underground vertical coal bunker tunneling system, which are used for solving the technical problems of high labor intensity, long shaft construction period and low construction efficiency in underground coal bunker construction.
The above object of the present invention can be achieved by the following technical solutions:
the invention provides a construction method of an underground vertical coal bunker, which comprises the following steps:
step S10, digging a slag chute guide hole;
step S20, excavating an initial foundation pit;
step S30, installing an underground vertical coal bunker tunneling system in the initial foundation pit;
step S40, the underground vertical coal bunker tunneling system tunnels the underground vertical coal bunker from top to bottom;
step S50, supporting the wall of the shaft of the underground vertical coal bunker;
the underground vertical coal bunker tunneling system comprises a tunneling machine and a vertical motion system, wherein the tunneling machine is used for excavating, the tunneling machine is installed on the vertical motion system, and the vertical motion system can drive the tunneling machine to move vertically.
In a preferred embodiment, the vertical motion system comprises a pressure-lifting device and a wall-protecting pipe joint system, the wall-protecting pipe joint system comprises a pipe joint, the heading machine is mounted on the pipe joint, and the pressure-lifting device is connected with the pipe joint and can lock the pipe joint or drive the pipe joint to move vertically.
In a preferred embodiment, the pressure raising device comprises a fixed oil cylinder, a step changing oil cylinder and a pushing cylinder, the fixed oil cylinder and the step changing oil cylinder can be independently locked with the pipe joint or separated from the pipe joint, and the pushing cylinder is connected with the step changing oil cylinder and can lock the step changing oil cylinder or drive the step changing oil cylinder to vertically move.
In a preferred embodiment, the heading machine comprises a propulsion system and an excavation unit, the excavation unit is mounted on the propulsion system, and the propulsion system can drive the excavation unit to move vertically; the propulsion system is mounted to the vertical motion system.
In a preferred embodiment, the propulsion system comprises a pushing fixing device, a pushing oil cylinder and a sliding support leg, the pushing fixing device is mounted on the vertical movement system, the pushing oil cylinder is connected with the sliding support leg and can drive the sliding support leg to vertically move relative to the pushing fixing device, and the excavation unit is mounted on the sliding support leg.
In a preferred embodiment, the heading machine comprises a plurality of circumferentially distributed propulsion systems arranged between the excavation unit and the vertical movement system.
In a preferred embodiment, the heading machine comprises a rotary driving device, a swing arm cylinder and a cutting part, wherein the cutting part is rotatably connected to the rotary driving device, and the swing arm cylinder is connected with the cutting part and can drive the cutting part to swing up and down relative to the rotary driving device; and the rotary driving device can drive the cutting part to rotate.
In a preferred embodiment, the construction method comprises: step S60, the heading machine is lifted upwards and performs expanding excavation heading; the step S60 is performed after the step S40.
In a preferred embodiment, the heading machine comprises a propulsion system and an excavation unit, the excavation unit is mounted on the propulsion system, and the propulsion system can drive the excavation unit to move vertically; the propulsion system is mounted to the vertical motion system; the excavation unit comprises the rotary driving device, the swing arm oil cylinder and the cutting part; the step S60 includes:
step S61, the swing arm oil cylinder is retracted, and the vertical motion system drives the heading machine to move to the expanding excavation height;
step S62, the propulsion system drives the excavation unit to move upwards to an upper position, the swing arm oil cylinder drives the cutting part to swing outwards to an inner position, and the cutting part is driven by the rotary driving unit to perform first expanding excavation;
step S63, the propulsion system drives the excavation unit to move downwards, the swing arm oil cylinder drives the cutting part to expand and swing outwards, and the cutting part is driven by the rotary driving unit to carry out second expanding excavation;
and S64, retracting the swing arm oil cylinder, driving the heading machine to move upwards by the vertical motion system, and repeating the steps S62 and S63.
The invention provides a tunneling system for an underground vertical coal bunker, which comprises: the excavator is used for excavating, the excavator is mounted on the vertical motion system, and the vertical motion system can drive the excavator to move vertically; the heading machine comprises a propelling system and an excavation unit, the excavation unit is mounted on the propelling system, and the propelling system can drive the excavation unit to move vertically; the propulsion system is mounted to the vertical motion system.
The invention has the characteristics and advantages that:
the vertical motion system drives the tunneling machine to perform vertical motion, the tunneling machine completes excavation of the underground vertical coal bunker, and during tunneling, muck can fall through the slag sliding guide hole to discharge slag. The construction method uses a mechanical method to replace a drilling and blasting method to carry out underground vertical coal bunker construction, reduces the underground operation of constructors, improves the safety, reduces the labor intensity of the constructors, and improves the construction efficiency.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIGS. 1-2 are views illustrating the operation of the method for constructing a vertical coal bunker in a well according to the present invention;
FIG. 3 is a top view of a downhole vertical coal bunker tunneling system provided by the present invention;
FIG. 4 is a schematic structural diagram of a propulsion system in the underground vertical coal bunker tunneling system provided by the invention;
FIG. 5 is a schematic structural diagram of a pressure raising device in the underground vertical coal bunker tunneling system provided by the invention;
FIG. 6 is a schematic diagram of a construction method of a downhole vertical coal bunker provided by the invention;
fig. 7-8 are schematic structural diagrams of the underground vertical coal bunker.
The reference numbers illustrate:
10. excavating a unit; 11. a cutting part; 111. a cutting head; 112. a cutting arm;
12. a rotation driving device; 121. a drive section; 122. a drive fixture; 123. a swing mechanism;
13. a swing arm cylinder;
20. a propulsion system; 21. a pushing fixing device; 22. a pushing cylinder; 23. a sliding leg;
300. a vertical motion system;
30. a retaining wall joint system; 31. a blade leg pipe section; 32. supporting the pipe section; 33. standard pipe joints;
40. a pressure raising device; 41. fixing the oil cylinder; 42. a step-changing oil cylinder; 43. a propulsion cylinder; 44. a pressure boosting device frame body; 441. a guide post;
51. slag chute guide holes; 52. a bell mouth.
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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Scheme one
The invention provides a construction method of an underground vertical coal bunker, which comprises the following steps of: step S10, digging a slag chute guide hole 51; step S20, excavating an initial foundation pit; step S30, installing an underground vertical coal bunker tunneling system in the starting foundation pit; step S40, the underground vertical coal bunker tunneling system tunnels the underground vertical coal bunker from top to bottom; step S50, supporting the wall of the shaft of the underground vertical coal bunker; as shown in fig. 1 and 2, the underground vertical coal bunker excavation system includes an excavator for excavation and a vertical motion system 300, the excavator is mounted on the vertical motion system 300, and the vertical motion system 300 can drive the excavator to move vertically.
The vertical motion system 300 drives the heading machine to perform vertical motion, the heading machine finishes the excavation of the underground vertical coal bunker, and during the heading process, muck can fall through the slag slide guide hole 51 to discharge slag. According to the construction method, a mechanical method is used for replacing a drilling and blasting method to carry out underground vertical coal bunker construction, the underground operation of constructors is reduced, the safety is improved, the labor intensity of the constructors is reduced, and the construction efficiency is improved.
In one embodiment, the vertical motion system 300 includes a pressure raising device 40 and a retaining wall joint system 30, the retaining wall joint system 30 includes a joint to which the roadheader is mounted, and the pressure raising device 40 is connected to the joint and can lock the joint or drive the joint to move vertically. The heading machine performs excavation work, the protecting wall pipe joint system 30 is responsible for connecting the pressure raising device 40 and the heading machine, and plays a role in supporting the wall of the well and protecting the heading machine, the pressure raising device 40 can drive the heading machine to move downwards, and the protecting wall pipe joint system 30, the pressure raising device 40 and the heading machine are matched to complete heading of the underground vertical coal bunker. The retaining wall joint system 30 provides support for the roadheader and also acts to support the borehole wall. Specifically, the tube segments in the retaining wall tube segment system 30 include a knife leg tube segment 31, a support tube segment 32, and a standard tube segment 33.
Further, the pressure raising device 40 comprises a fixed oil cylinder 41, a step changing oil cylinder 42 and a pushing cylinder 43, the fixed oil cylinder 41 and the step changing oil cylinder 42 can be independently locked with a pipe joint or separated from the pipe joint, and the pushing cylinder 43 is connected with the step changing oil cylinder 42 and can lock the step changing oil cylinder 42 or drive the step changing oil cylinder 42 to vertically move. Specifically, a pin hole is reserved on the support pipe joint 32, a pin shaft of the stepping cylinder 42 is connected with the pin hole on the support pipe joint 32, and when the stepping cylinder 42 extends out and is inserted into the pin hole of the support pipe joint 32, the stepping cylinder 42 is locked with the support pipe joint 32; when the stepping cylinder 42 is contracted to withdraw the pin shaft from the pin hole of the support pipe joint 32, the stepping cylinder 42 is separated from the support pipe joint 32. The fixed oil cylinder 41 and the pipe joint can be locked and separated by adopting a similar structure, and the details are not repeated.
As shown in fig. 5, the lifting and pressing device 40 further includes a lifting and pressing device frame 44, and the fixed cylinder 41 is connected to the lifting and pressing device frame 44 and fixed at the bottom of the lifting and pressing device frame 44; the step-changing oil cylinder 42 is connected with a guide post 441 on the pressure raising device frame body 44 and is simultaneously connected with the cylinder body of the propelling cylinder 43; the piston rod of the pushing cylinder 43 is connected with the pressure lifting device frame body 44, the cylinder body of the pushing cylinder 43 is connected with the step-changing cylinder 42, and when the pushing cylinder 43 extends or retracts, the step-changing cylinder 42 is driven to move up and down along the guide post 441 of the pressure lifting device frame body 44.
In one embodiment, the heading machine comprises a propulsion system 20 and an excavation unit 10, wherein the excavation unit 10 is mounted on the propulsion system 20, and the propulsion system 20 can drive the excavation unit 10 to move vertically; propulsion system 20 is mounted to vertical motion system 300. As shown in fig. 1 and 2, the heading machine is connected to the retaining wall pipe joint system 30, the pressure raising device 40 is connected to the retaining wall pipe joint system 30, the retaining wall pipe joint system 30 can be driven by the pressure raising device 40 to move the heading machine vertically, and meanwhile, the excavation unit 10 in the heading machine can make vertical relative movement with the retaining wall pipe joint system 30 under the action of the propulsion system 20, and the two movements cooperate with each other to realize the step excavation of the vertical coal bunker.
Further, the propulsion system 20 includes a pushing fixing device 21, a pushing cylinder 22 and a sliding leg 23, as shown in fig. 1-4, the pushing fixing device 21 is installed on the vertical movement system 300, the pushing cylinder 22 is connected with the sliding leg 23 and can drive the sliding leg 23 to move vertically relative to the pushing fixing device 21, and the excavation unit 10 is installed on the sliding leg 23.
Specifically, the cylinder body of the pushing cylinder 22 is connected with the sliding support leg 23, the piston rod of the pushing cylinder 22 is connected with the pushing fixing device 21, the pushing cylinder 22 extends and retracts to drive the sliding support leg 23 to slide on the pushing fixing device 21, and the sliding support leg 23 is connected with the excavation unit 10, so that the whole excavation unit 10 is driven to move up and down.
The number of propulsion systems 20 may be 1 or more. As shown in fig. 3, the heading machine includes a plurality of circumferentially distributed propulsion systems 20, the propulsion systems 20 being arranged between the excavation unit 10 and the vertical movement system 300; preferably, the roadheader includes 3 propulsion systems 20.
In one embodiment, the heading machine comprises a rotary driving device 12, a swing arm cylinder 13 and a cutting part 11, wherein the cutting part 11 is rotatably connected to the rotary driving device 12, and the swing arm cylinder 13 is connected to the cutting part 11 and can drive the cutting part 11 to swing up and down relative to the rotary driving device 12; and the rotary driving means 12 can drive the cutting part 11 to rotate. The swing arm cylinder 13 can adjust the swing angle of the cutting part 11 to control the excavation diameter. The rotary driving device 12, the swing arm oil cylinder 13 and the cutting part 11 are used as an excavation unit 10 of the heading machine, the sliding support leg 23 is connected with the rotary driving device 12, the pushing oil cylinder 22 extends and retracts to drive the sliding support leg 23 to slide on the pushing fixing device 21, and meanwhile, the rotary driving device 12, the swing arm oil cylinder 13 and the cutting part 11 are driven to move up and down. As shown in fig. 1 and 2, the swing driving device 12 includes a driving part 121, a driving fixing device 122, and a swing mechanism 123, and the cutting part 11 includes a cutting head 111 and a cutting arm 112.
In one embodiment, the construction method comprises: step S60, lifting the heading machine upwards and performing expanding excavation heading; step S60 is implemented after step S40. And S40, performing first tunneling from top to bottom, and then performing expanding tunneling from bottom to top in S60, so that the storage capacity of the underground vertical coal bunker is enlarged.
Further, the heading machine comprises a propulsion system 20 and an excavation unit 10, wherein the excavation unit 10 is mounted on the propulsion system 20, and the propulsion system 20 can drive the excavation unit 10 to move vertically; propulsion system 20 is mounted to vertical motion system 300; the excavation unit 10 comprises a rotary driving device 12, a swing arm oil cylinder 13 and a cutting part 11; step S60 includes: step S61, the swing arm oil cylinder 13 is retracted, and the vertical motion system 300 drives the heading machine to move to the expanding excavation height; step S62, the propulsion system 20 drives the excavation unit 10 to move upwards to an upper position, the swing arm cylinder 13 drives the cutting part 11 to swing outwards to an inner position, and the cutting part 11 performs first expanding excavation under the driving of the rotary driving unit; step S63, the propulsion system 20 drives the excavation unit 10 to move downwards, the swing arm cylinder 13 drives the cutting part 11 to expand and swing outwards, and the cutting part 11 performs second expanding excavation under the drive of the rotary drive unit; and step S64, retracting the swing arm oil cylinder 13, driving the heading machine to move upwards by the vertical movement system 300, and repeating the steps S62 and S63. Through the step S60, the storage capacity of the underground vertical coal bunker is enlarged, the tunneling efficiency is improved, the bell mouth 52 can be formed at the upper part of the underground vertical coal bunker, and the smooth communication between the underground vertical coal bunker and a roadway above the underground vertical coal bunker is guaranteed.
Fig. 8 shows a vertical coal bunker which has a vertical opening at its upper end and a bell-mouth 52 at its lower end. The size of the coal bunker diameter is generally determined according to the required coal bunker storage capacity, but the sizes of the coal bunker upper opening and lower opening are limited due to the limited roadway size. In order to enlarge the storage capacity of the coal bunker, as shown in fig. 7, the diameter of the middle part of the coal bunker is enlarged to meet the storage capacity requirement, and an underground vertical coal bunker with the upper end and the lower end both being provided with bell mouths 52 is formed.
For that shown in FIG. 8Down-hole vertical coal bunker with upper end straight port and lower end bell mouth 52The construction method comprises the following steps: step S10, step S20, step S30, step S40, and step S50.
The steps S10, S20 and S30 are implemented in sequence, and comprise the following specific steps: (1) a raise boring machine is used for excavating a slag chute guide hole 51 which runs through an upper roadway and a lower roadway along the center of the coal bunker, and the diameter of the slag chute guide hole is generally 1.2-1.4 m; (2) digging an initial foundation pit with a proper depth by taking the slag-sliding guide hole 51 as a center; (3) installing a retaining wall pipe joint system 30 in the initial foundation pit, hardening and reinforcing the periphery of the wellhead, installing a plurality of groups of pressure boosting devices 40 on the periphery of the wellhead, and connecting pin shafts of the step-changing oil cylinders 42 with pin holes reserved on the supporting pipe joints 32; (4) installing all parts of the heading machine at the bottom of the initial foundation pit, installing and fixing a pushing fixing device 21 and a supporting pipe joint 32 of the heading machine, installing various pipelines, installing a control system on the ground, and completing the debugging of the whole machine.
Step S40 is performed after step S30, and step S40 includes step S41, step S42, step S43, and step S44.
Step S41 includes the following specific steps: (1) the heading machine is operated, the cutting head 111 is started, the driving part 121 is started again, the driving part 121 drives the rotating mechanism 123 to rotate, and the cutting part 11 is driven to rotate when the rotating mechanism 123 rotates due to the fact that the cutting part 11 is connected with the rotating mechanism 123, so that the cutting head 111 can rotate along with the rotating mechanism 123 in addition to self rotation; (2) after a circle of rotation is completed, the pushing cylinder 22 extends out by a section to drive the sliding support leg 23 to move upwards, and the pushing cylinder 22 extends out to drive the heading machine to move upwards as the sliding support leg 23 is connected with the driving fixing device 122 in the rotation driving device 12; meanwhile, the swing arm oil cylinder 13 extends out, the cutting part 11 extends outwards by an angle, and then the slewing mechanism 123 rotates to drive the cutting part 11 to rotate to complete one-circle rotation; (3) the above steps are repeated until the stroke of the pushing cylinder 22 is completely used up, and a section is cut off, and meanwhile, the coal bunker forms a conical bottom surface. During the tunneling process, the slag soil can slide into the middle slag slide guide hole 51 along the conical surface and then fall into the tunnel below the coal bunker to finish slag discharging.
Step S42 includes the following specific steps: (1) after the full-section cutting of the conical bottom surface is finished, the swing arm oil cylinder 13 is retracted, so that the cutting head 111 is in a middle state; the pushing cylinder 22 is retracted to enable the tunneling machine to move downwards to the lower position; (2) the propelling cylinder 43 is retracted for one section, and because the step-changing oil cylinder 42 is fixedly connected with the propelling cylinder 43 at the moment and the step-changing oil cylinder 42 is fixedly connected with the supporting pipe joint 32 or the standard pipe joint 33 through the pin shaft, when the propelling cylinder 43 is retracted, the wall protection pipe joint system 30 and the tunneling machine move downwards and the tunneling machine advances downwards; the above-described step S41 is performed again. Step S42 is repeated until the stroke of the advancing cylinder 43 is finished.
Step S43 includes the following specific steps: (1) the fixed oil cylinder 41 is extended out to be connected with the supporting pipe joint 32 or the standard pipe joint 33, and the step-changing oil cylinder 42 is retracted; (2) the assembled standard pipe joint 33 is fixedly connected with the supporting pipe joint 32 or the standard pipe joint 33; (3) the pushing cylinder 43 extends out, the step-changing oil cylinder 42 extends out and is fixedly connected with the standard pipe joint 33, the fixed oil cylinder 41 is retracted, the pipe joint assembly is completed, and the next cycle is carried out.
Step S44 includes the following specific steps: and (5) circulating the steps S41-S43 until the lower end of the bottom conical surface of the coal bunker is connected to the lower roadway, wherein the bottom conical surface needs to be reserved because the coal distributor needs to be installed at the bottom of the coal bunker. In the tunneling process of the step S40, the slag can slide into the slag sliding guide hole 51 in the middle along the conical surface and then fall into the tunnel below the coal bunker to complete slag discharging, so that the slag stone is pushed into the slag sliding guide hole 51 to be cleaned by a mechanical method instead of manual work, and the labor intensity of constructors is reduced.
After step S40, the pressure raising device 40 is used to raise the retaining wall joint system 30 and the heading machine out of the well, and the equipment withdrawal is completed, which specifically comprises the following steps: withdrawing the swing arm oil cylinder 13, extending the pushing cylinder 43 to enable the wall protection pipe joint system 30 to drive the tunneling machine to move upwards, extending the fixed oil cylinder 41 to be connected with the standard pipe joint 33, withdrawing the stepping changing oil cylinder 42, withdrawing the pushing cylinder 43, and removing one section of the standard pipe joint 33 at the top end; the extending step-changing oil cylinder 42 is connected with the next ring of standard pipe joints 33, the fixed oil cylinder 41 is retracted, and the pushing cylinder 43 is extended, so that the wall protection pipe joint system 30 and the tunneling machine move upwards; and repeating the steps until the equipment is lifted into a roadway at the upper opening of the coal bunker. After the equipment is lifted, the shaft wall of the coal bunker is supported, the coal distributor at the lower part is installed and the like through step S50, and the construction of the coal bunker is completed.
For that shown in FIG. 7Vertical coal bunker with bell mouths 52 at upper end and lower endThe construction method comprises the following steps: step S10, step S20, step S30, step S40, step S60, and step S50. Step S10, step S20, step S30 and step S40 are performed in sequence, and are substantially the same as the construction method of the underground vertical coal bunker of the upper-end straight-mouth lower-end bell mouth 52, and are not described herein again.
Step S60 is performed after step S40, and in step S60, the wall protecting tube joint system 30 and the heading machine are lifted upwards by using the well pressure raising device 40, and in the lifting process, the heading machine performs excavation until the wellhead, the heading is completed, and the equipment is withdrawn. Specifically, step S60 includes step S61, step S62, step S63, and step S64.
The steps S61, S62, and S63 include the following steps: (1) retracting the swing arm oil cylinder 13 and extending the propelling cylinder 43 to enable the wall protection pipe joint system 30 to drive the tunneling machine to move upwards to reach the expanding excavation height (step S61); (2) extending the pushing cylinder 22 to a limit position, extending the swing arm cylinder 13 to swing the cutting part 11 outwards, starting the cutting head 111 to cut the rock wall, starting the driving part 121, driving the swing mechanism 123 to rotate by the driving part 121, and since the cutting part 11 is connected with the swing mechanism 123, when the swing mechanism 123 rotates, driving the cutting part 11 to rotate, the cutting head 111 rotates along with the swing mechanism 123 in addition to the rotation, and performing a first expanding excavation (i.e., step S62); (3) after a circle of rotation is completed, the swing arm oil cylinder 13 is retracted to enable the cutting part 11 to swing inwards to avoid interference, then the pushing oil cylinder 22 is retracted for a section to drive the sliding support leg 23 to move downwards, and the pushing oil cylinder 22 extends out to drive the heading machine to move downwards as the sliding support leg 23 is connected with the driving fixing device 122 in the rotation driving device 12; (4) the swing arm oil cylinder 13 extends out again, and the cutting part 11 extends outwards by an angle; (5) the rotating mechanism 123 rotates to drive the cutting part 11 to rotate, complete a circle of rotation, and perform second expanding excavation; (6) and (5) circulating the steps (3), (4) and (5), and carrying out multiple expanding excavation until the stroke of the pushing cylinder 22 is used up and the section is cut.
In some embodiments of step S63, after the pushing cylinder 22 drives the sliding leg 23 to move downward for a period, the above steps (4) and (5) may be performed in a plurality of cycles, that is: in one expanding excavation, after the cutting part 11 expands outward by a smaller angle, the revolving mechanism 123 drives the cutting part 11 to rotate; then, the cutting part 11 is rotated after being expanded outward by a small angle again, and the cycle is repeated so many times to achieve the expansion to the desired angle. In the first enlarging excavation in step S62, the cutting unit 11 may be expanded outward a plurality of times.
Step S64 includes the following specific steps: (1) the swing arm oil cylinder 13 is retracted, and the pushing oil cylinder 22 extends to reach the stroke limit; (2) the extending fixed oil cylinder 41 is connected with the standard pipe joint 33; (3) after the step-changing oil cylinder 42 is retracted, the propelling cylinder 43 is retracted; (4) removing a section of standard pipe joint 33; (5) the extending step-changing oil cylinder 42 is connected with the next ring of standard pipe joints 33, the fixed oil cylinder 41 is retracted, and the pushing cylinder 43 is extended, so that the wall protection pipe joint system 30 and the tunneling machine move upwards; (6) the cutting operation is performed according to steps S62 and S63. In some embodiments, the extension of the ram 43 to move the retaining tube segment system 30 and the heading machine up may be divided into multiple sections, namely: within the stroke of the thrust cylinder 43, the thrust cylinder 43 is divided into sections and moved up section by section, and the heading machine performs a cutting operation each time the heading cylinder is moved up section by section.
In step S60, steps S62-S64 may be repeated until the reaming to the wellhead is completed. Then, the swing arm oil cylinder 13 is retracted, and the equipment is lifted to an upper opening roadway. After the equipment is raised, step S50 is performed: and (5) supporting the wall of the coal bunker, installing a coal distributor at the lower part and the like, thereby completing the construction of the coal bunker. By the construction method, the construction time can be saved by at least 50% by adopting a mechanical method for tunneling compared with a drilling and blasting method for tunneling.
Scheme two
The invention provides an underground vertical coal bunker tunneling system, as shown in fig. 1-5, comprising: the excavator is used for excavating, the excavator is mounted on the vertical motion system 300, and the vertical motion system 300 can drive the excavator to move vertically; the heading machine comprises a propulsion system 20 and an excavation unit 10, wherein the excavation unit 10 is arranged on the propulsion system 20, and the propulsion system 20 can drive the excavation unit 10 to move vertically; propulsion system 20 is mounted to vertical motion system 300.
The vertical motion system 300 drives the heading machine to perform vertical motion, meanwhile, the excavation unit 10 in the heading machine can perform vertical relative motion with the wall protection pipe joint system 30 under the action of the propulsion system 20, the two motions are cooperated to realize stepping excavation of the vertical coal bunker, the heading machine completes excavation of the underground vertical coal bunker, a mechanical method is used for replacing a drilling and blasting method to perform underground vertical coal bunker construction, the descending operation of constructors is reduced, the safety is improved, the labor intensity of constructors is reduced, and the construction efficiency is improved.
The tunneling machine in the underground vertical coal bunker tunneling system is small in structural component size, light in weight, convenient to install and disassemble and suitable for limited underground installation space.
The above description is only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the disclosure of the application document without departing from the spirit and scope of the present invention.
Claims (10)
1. A construction method of an underground vertical coal bunker is characterized by comprising the following steps:
step S10, digging a slag chute guide hole;
step S20, excavating an initial foundation pit;
step S30, installing an underground vertical coal bunker tunneling system in the starting foundation pit;
step S40, the underground vertical coal bunker tunneling system tunnels the underground vertical coal bunker from top to bottom;
step S50, supporting the wall of the shaft of the underground vertical coal bunker;
the underground vertical coal bunker tunneling system comprises a tunneling machine and a vertical motion system, wherein the tunneling machine is used for excavating, the tunneling machine is installed on the vertical motion system, and the vertical motion system can drive the tunneling machine to move vertically.
2. The construction method of the underground vertical coal bunker of claim 1, wherein the vertical motion system comprises a pressure-increasing device and a dado pipe joint system, the dado pipe joint system comprises pipe joints, the heading machine is installed on the pipe joints, and the pressure-increasing device is connected with the pipe joints and can lock the pipe joints or drive the pipe joints to move vertically.
3. The construction method of the underground vertical coal bunker of claim 2, wherein the pressure raising device comprises a fixed oil cylinder, a stepping oil cylinder and a pushing cylinder, the fixed oil cylinder and the stepping oil cylinder can be independently locked with the pipe joint or separated from the pipe joint, and the pushing cylinder is connected with the stepping oil cylinder and can lock the stepping oil cylinder or drive the stepping oil cylinder to vertically move.
4. The method of constructing a downhole vertical coal bunker as claimed in any one of claims 1-3, wherein the heading machine includes a propulsion system and a digging unit, the digging unit being mounted to the propulsion system, the propulsion system being capable of driving the digging unit to move vertically; the propulsion system is mounted to the vertical motion system.
5. The method of claim 4, wherein the propulsion system comprises a pushing fixture, a pushing cylinder, and a sliding leg, the pushing fixture is mounted to the vertical motion system, the pushing cylinder is connected to the sliding leg and is capable of driving the sliding leg to move vertically relative to the pushing fixture, and the excavating unit is mounted to the sliding leg.
6. The method of constructing a downhole vertical coal bunker of claim 5 wherein the heading machine includes a plurality of circumferentially distributed propulsion systems disposed between the excavation unit and the vertical motion system.
7. The construction method of the underground vertical coal bunker of claim 1, wherein the heading machine comprises a rotary driving device, a swing arm cylinder and a cutting part, the cutting part is rotatably connected to the rotary driving device, the swing arm cylinder is connected to the cutting part and can drive the cutting part to swing up and down relative to the rotary driving device; and the rotary driving device can drive the cutting part to rotate.
8. The method of constructing a downhole vertical coal bunker as claimed in claim 7, wherein the method includes: step S60, lifting the heading machine upwards and performing expanding excavation heading;
the step S60 is performed after the step S40.
9. The method of constructing a downhole vertical coal bunker of claim 8 wherein the heading machine includes a propulsion system and a digging unit mounted to the propulsion system, the propulsion system capable of driving the digging unit in vertical motion; the propulsion system is mounted to the vertical motion system; the excavation unit comprises the rotary driving device, the swing arm oil cylinder and the cutting part;
the step S60 includes:
step S61, the swing arm oil cylinder is retracted, and the vertical motion system drives the heading machine to move to the expanding excavation height;
step S62, the propulsion system drives the excavation unit to move upwards to an upper position, the swing arm oil cylinder drives the cutting part to swing outwards to an inner position, and the cutting part is driven by the rotary driving unit to perform first expanding excavation;
step S63, the propulsion system drives the excavation unit to move downwards, the swing arm oil cylinder drives the cutting part to expand and swing outwards, and the cutting part is driven by the rotary driving unit to carry out second expanding excavation;
and S64, retracting the swing arm oil cylinder, driving the heading machine to move upwards by the vertical motion system, and repeating the steps S62 and S63.
10. A system for tunneling a vertical coal bunker in a well, comprising: the excavator is used for excavating, the excavator is mounted on the vertical motion system, and the vertical motion system can drive the excavator to move vertically;
the heading machine comprises a propelling system and an excavation unit, the excavation unit is mounted on the propelling system, and the propelling system can drive the excavation unit to move vertically; the propulsion system is mounted to the vertical motion system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210299691.4A CN114592870A (en) | 2022-03-25 | 2022-03-25 | Construction method of underground vertical coal bunker and underground vertical coal bunker tunneling system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210299691.4A CN114592870A (en) | 2022-03-25 | 2022-03-25 | Construction method of underground vertical coal bunker and underground vertical coal bunker tunneling system |
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