CN110778345A - Roadway waste rock blocking device and installation method thereof - Google Patents
Roadway waste rock blocking device and installation method thereof Download PDFInfo
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- CN110778345A CN110778345A CN201911061184.1A CN201911061184A CN110778345A CN 110778345 A CN110778345 A CN 110778345A CN 201911061184 A CN201911061184 A CN 201911061184A CN 110778345 A CN110778345 A CN 110778345A
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- 239000010878 waste rock Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 34
- 230000000903 blocking effect Effects 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 title claims abstract description 18
- 238000005520 cutting process Methods 0.000 claims abstract description 14
- 238000005516 engineering process Methods 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 abstract description 9
- 238000005065 mining Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 229910000831 Steel Inorganic materials 0.000 description 10
- 239000010959 steel Substances 0.000 description 10
- 230000001788 irregular Effects 0.000 description 7
- 230000004888 barrier function Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/14—Telescopic props
- E21D15/16—Telescopic props with parts held together by positive means, with or without relative sliding movement when the prop is subject to excessive pressure
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D15/00—Props; Chocks, e.g. made of flexible containers filled with backfilling material
- E21D15/50—Component parts or details of props
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)
Abstract
The invention relates to the technical field of coal mining, and provides a roadway waste rock blocking device and an installation method thereof, which are applied to a roof cutting pressure relief self-entry technology. The roadway waste rock blocking device comprises a first V-shaped baffle, a second V-shaped baffle and a locking assembly. One end fixed connection of first V type baffle is in the bottom plate and is close to the collecting space area, and the buckling line of first V type baffle is vertical setting. The second V-shaped baffle and the first V-shaped baffle are at least partially overlapped, and one end of the second V-shaped baffle is connected to the top plate. The locking assembly is configured to limit separation of the first and second V-shaped baffles at the overlapping portion and to allow movement of the second V-shaped baffle relative to the first V-shaped baffle in the bend line direction. The length of each of the first V-shaped baffle and the second V-shaped baffle is smaller than the distance between the top plate and the bottom plate.
Description
Technical Field
The invention relates to the field of coal mining in general, and particularly relates to a roadway waste rock blocking device and an installation method thereof.
Background
In the process of retaining a roadway by the roof cutting pressure relief self-entry technology, a coal mining side roadway side is automatically formed by waste rocks which are collapsed from a goaf top plate after roof cutting. After the working face is mined, the roof rock mass of the goaf gradually collapses, the collapse process has timeliness, irregular movement can occur to the waste rock in the falling process, and in order to prevent the waste rock from impacting into the roadway to threaten the safety of people and the operation of equipment in the collapse process and ensure the roadway retaining effect, waste rock blocking support needs to be carried out on the mining side.
The waste rock blocking support is a key step of a roof cutting pressure relief self-entry technology, I-shaped steel is mostly adopted for blocking waste rock in related technologies, and after a working face is mined, the I-shaped steel is often bent in an entry forming process, so that an entry forming effect is influenced, and the use of an entry in a later period is influenced.
The above information disclosed in this background section is only for enhancement of understanding of the background of the invention and therefore it may contain information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention has a main purpose of overcoming at least one defect of the prior art and providing a roadway waste rock blocking device to solve the problem of bending of a waste rock blocking structure in the related art.
Another primary object of the present invention is to overcome at least one of the above-mentioned disadvantages of the prior art and to provide a method for installing a roadway barrier.
In order to achieve the purpose, the invention adopts the following technical scheme:
according to one aspect of the invention, the roadway waste rock blocking device is applied to roof cutting, pressure relief and self-entry technology, the roadway is arranged adjacent to a goaf and comprises a top plate and a bottom plate, and the roadway waste rock blocking device comprises a first V-shaped baffle, a second V-shaped baffle and a locking assembly. One end of the first V-shaped baffle is fixedly connected to the bottom plate and is close to the goaf, and the bending line of the first V-shaped baffle is vertically arranged; the second V-shaped baffle is at least partially overlapped with the first V-shaped baffle, and one end of the second V-shaped baffle is connected to the top plate; a locking assembly configured to limit separation of the first and second V-shaped baffles at the overlapping portion and to allow movement of the second V-shaped baffle relative to the first V-shaped baffle in the bend line direction; wherein the lengths of the first V-shaped baffle and the second V-shaped baffle are both smaller than the distance between the top plate and the bottom plate.
According to an embodiment of the present invention, the concave surfaces of the first V-shaped baffle and the second V-shaped baffle face the gob.
According to an embodiment of the present invention, the length of the overlapping portion of the first V-shaped baffle and the second V-shaped baffle in the bending line direction is at least 1 m.
According to an embodiment of the present invention, a base is disposed at an end of the first V-shaped baffle away from the top plate, and the base is embedded in the bottom plate.
According to an embodiment of the present invention, a protruding portion is disposed at an end of the second V-shaped baffle away from the bottom plate, and the protruding portion extends into the opening of the top plate.
According to an embodiment of the invention, the second V-shaped baffle is provided with a hook.
According to an embodiment of the present invention, the locking assembly includes a pair of cable sleeves, and the pair of cable sleeves are locked to the overlapping portion of the first V-shaped baffle and the second V-shaped baffle at intervals.
According to another aspect of the invention, an installation method of a roadway waste rock blocking device is provided, and is applied to roof cutting, pressure relief and self-entry roadway technology, wherein the roadway is arranged adjacent to a goaf and comprises a top plate and a bottom plate, and the installation method comprises the following steps:
providing a first V-shaped baffle, fixedly connecting one end of the first V-shaped baffle to the bottom plate and enabling the first V-shaped baffle to be close to the goaf, wherein a bending line of the first V-shaped baffle is vertically arranged;
providing a second V-shaped baffle, wherein the second V-shaped baffle and the first V-shaped baffle are at least partially overlapped, and one end of the second V-shaped baffle is connected to the top plate;
providing a locking assembly configured to limit separation of the first and second V-shaped baffles at the overlapping portion and to allow movement of the second V-shaped baffle relative to the first V-shaped baffle in the bend line direction;
wherein the lengths of the first V-shaped baffle and the second V-shaped baffle are both smaller than the distance between the top plate and the bottom plate.
According to an embodiment of the present invention, the second V-shaped baffle is provided with a hook;
partially overlapping the second V-shaped baffle with the first V-shaped baffle and connecting one end of the second V-shaped baffle to the top plate, comprising:
and providing a lifter, lifting the hook by using the lifter, and partially overlapping the second V-shaped baffle plate on the first V-shaped baffle plate and connecting the second V-shaped baffle plate to the top plate.
According to an embodiment of the present invention, the length of the overlapping portion of the first V-shaped baffle and the second V-shaped baffle in the bending line direction is at least 1 m; or the like, or, alternatively,
and one end of the second V-shaped baffle, which is far away from the bottom plate, is provided with a protruding part, and the protruding part extends into the opening of the top plate.
According to the technical scheme, the roadway waste rock blocking device has the advantages and positive effects that:
this is disclosed mainly through designing into first V type baffle and second V type baffle can realize relative movement in tunnel direction of height to offset because the irregular of the tunnel roof that the waste rock caving caused sinks, avoided the crooked problem of protector among the correlation technique, ensure the lane effect in tunnel, show the security that has improved the tunnel. Meanwhile, due to the V-shaped shape design of the first V-shaped baffle and the second V-shaped baffle, the first V-shaped baffle and the second V-shaped baffle have strong impact resistance when facing the impact force of the gangue, cannot be easily deformed, and further ensure the lane forming effect.
Drawings
The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.
Fig. 1 is a schematic view of an installation location of a roadway retaining device according to an exemplary embodiment.
FIG. 2 is a schematic illustration of a roadway mine stopping device shown according to an exemplary embodiment.
FIG. 3 is a side view of a plurality of roadway mine spoil devices shown according to an exemplary embodiment.
Fig. 4 is a schematic diagram of an elevator shown in accordance with an exemplary embodiment.
Wherein the reference numerals are as follows:
1. second V-shaped baffle
2. First V-shaped baffle
3. Card cable
4. Raised part
5. Base seat
6. Hook for hanging articles
7. Roadway
8. Base plate
9. Coal side
10. Top board
13. Goaf
31. Lifting head
32. Telescopic rod
33. Cylinder
34. Supporting seat
35. Air inlet control valve
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "top", "bottom", and the like, are also intended to have similar meanings. The terms "a," "an," "the," and "said" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," "third," and "fourth," etc. are used merely as labels, and are not limiting as to the number of their objects.
The roof cutting and pressure relief self-entry technology is characterized in that a roof directional blasting joint cutting technology is adopted to cut off the connection between a goaf roof and a roadway roof, so that the roadway roof forms a short arm beam, the roadway is reserved by a special process and is reused as a roadway of the next working face, and therefore when the next working face is mined, a protective coal pillar is not required to be reserved between the two working faces, two roadways are not required to be excavated again, and only one roadway is required to be excavated again. The technology successfully realizes the elimination of coal pillars, not only saves coal resources, relieves the shortage of mining and taking over and prolongs the service life of a mine, but also changes U-shaped ventilation into Y-shaped ventilation, solves the problem of corner gas accumulation, and simultaneously eliminates geological disasters caused by stress concentration due to the remaining coal pillars.
In the roadway retaining process of the roof cutting pressure relief self-entry technology, a roadway gangue blocking device is required to be configured to block gangue falling from a goaf top plate, so that a side wall (broken stone wall) of the roadway is formed. The gangue protection device in the prior art usually adopts the I-steel to block the gangue, but in the entry retaining process, the I-steel often takes place to buckle, has influenced the use of becoming lane effect and later stage tunnel, and more serious person may cause the collapse of tunnel, causes the casualties.
The inventor of the invention discovers in research that after mining on a working face, gangue in a goaf needs to undergo a process of caving, compaction and stabilization, a roadway top plate sinks to a certain extent in the process of compaction and stabilization, and I-shaped steel cannot give pressure, so that the I-shaped steel bends.
The inventor of the invention also finds that the I-shaped steel cannot adapt to the irregular downward pressing movement due to the irregular collapse of the gangue and certain impact property of the gangue, and accordingly, the I-shaped steel cannot be bent due to the irregular subsidence of a roadway top plate.
The invention provides a roadway waste rock blocking device which comprises a first V-shaped baffle, a second V-shaped baffle and a locking assembly. One end fixed connection in the bottom plate in tunnel and be close to the collecting space area of first V type baffle, the buckling line of first V type baffle is vertical setting. The second V type baffle overlaps with first V type baffle at least partly and sets up, and the roof in tunnel is connected to the one end of second V type baffle. The locking assembly is configured to limit separation of the first V-shaped baffle and the second V-shaped baffle and allow the second V-shaped baffle to move relative to the first V-shaped baffle along the bend line direction; the length of each of the first V-shaped baffle and the second V-shaped baffle is smaller than the distance between the top plate and the bottom plate.
This is disclosed mainly through designing into first V type baffle and second V type baffle can realize relative movement in tunnel direction of height to offset because the irregular of the tunnel roof that the waste rock caving caused sinks, avoided the crooked problem of protector among the correlation technique, ensure the lane effect in tunnel, show the security that has improved the tunnel. Meanwhile, due to the V-shaped shape design of the first V-shaped baffle and the second V-shaped baffle, the first V-shaped baffle and the second V-shaped baffle have strong impact resistance when facing the impact force of the gangue, cannot be easily deformed, and further ensure the lane forming effect.
In addition, through designing into "V type" structure and at least partial overlapping setting with two baffles for when second V type baffle slided for first V type baffle, the V type structure of first V type baffle plays orbital effect, makes the gliding more smooth and easy of second V type baffle, and two baffles are difficult for taking place the separation.
The following description is made in conjunction with certain specific embodiments.
Fig. 1 is a schematic view illustrating an installation position of a roadway mine blocking device according to an exemplary embodiment. FIG. 2 is a schematic illustration of a roadway mine stopping device shown according to an exemplary embodiment. FIG. 3 is a side view of a roadway retaining rock apparatus shown in accordance with an exemplary embodiment. Fig. 4 is a schematic diagram of an elevator shown in accordance with an exemplary embodiment.
As shown in fig. 1, an embodiment of the present invention provides a roadway waste rock blocking device, which is applied to roof cutting, pressure relief and self-entry technology, and the protective device can prevent waste rock from rushing into the roadway. In the automatic roadway forming process through roof cutting and pressure relief, the reserved roadway 7 is adjacent to the goaf 13, the goaf 13 is arranged on one side of the roadway 7, the coal slope 9 is arranged on the other side of the roadway 7, and the roadway 7 comprises a top plate 10 and a bottom plate 8. The roadway waste rock blocking device comprises a first V-shaped baffle 2, a second V-shaped baffle 1 and a locking assembly.
One end fixed connection of first V type baffle 2 is in bottom plate 8 and be close to collecting space area 13, and the other end of first V type baffle 2 upwards extends along vertical direction, and the buckling line of first V type baffle 2 is vertical setting.
The second V-shaped baffle 1 and the first V-shaped baffle 2 are at least partially overlapped, and one end of the second V-shaped baffle 1 is connected to the top plate 10. The locking assembly is configured to limit separation of the first V-shaped barrier 2 and the second V-shaped barrier 1 and to allow the second V-shaped barrier 1 to move relative to the first V-shaped barrier 2 in the bend line direction.
Wherein, the length of the first V-shaped baffle 2 and the second V-shaped baffle 1 is less than the distance between the top plate 10 and the bottom plate 8.
After the working face is mined, the top plate of the goaf 13 collapses, the top plate 10 of the roadway 7 slightly sinks, so that the second V-shaped baffle 1 connected with the top plate 10 of the roadway 7 is driven to move downwards, appropriate sliding yielding is realized, the effect of blocking waste rock is ensured, and meanwhile, the first V-shaped baffle 2 and the second V-shaped baffle 1 can not be bent due to the sinking of the top plate 10 of the roadway.
In one embodiment, the concave surfaces of the first V-shaped baffle 2 and the second V-shaped baffle 1 face the goaf 13, in other words, the concave surfaces of the two baffles face the direction in which the gangue collapses.
In the embodiment, due to the V-shaped design of the first V-shaped baffle 2 and the second V-shaped baffle 1, when the first V-shaped baffle faces the impact force of the gangue, the first V-shaped baffle has strong impact resistance, cannot be easily deformed, and further ensures the roadway forming effect.
In one embodiment, the length of the overlapping portion of the first V-shaped baffle 2 and the second V-shaped baffle 1 in the bending line direction is at least 1 m.
In the roadway forming process, the impact force caused by the gangue is mainly concentrated in the overlapping part area of the first V-shaped baffle 2 and the second V-shaped baffle 1, and in the embodiment, the length of the overlapping area is designed to be at least 1m, so that the area has stronger capacity of bearing the impact force of the gangue.
As shown in fig. 1 and 2, in an embodiment, a base 5 is disposed at an end of the first V-shaped baffle 2 away from the top plate 10, for example, by welding, and the base 5 is embedded in the bottom plate 8, so as to further improve the stability and firmness of the connection between the first V-shaped baffle 2 and the bottom plate 8.
In other embodiments, the base 5 may be disc-shaped to increase the contact area of the base 5 with the bottom plate 8 of the tunnel 7, thereby significantly improving the stability of the first V-shaped baffle 2.
As shown in fig. 1 and 2, in an embodiment, an end of the second V-shaped baffle 1 away from the bottom plate 8 is provided with a protrusion 4, and the protrusion 4 extends into an opening of the top plate 10, which may be a blast hole. Through the structural design, when the first V-shaped baffle 2 and the second V-shaped baffle 1 bear the impact force of the gangue, the whole structure can be prevented from toppling.
For example, the protrusion 4 may be a round steel, and is fixedly connected to one side of the second V-shaped baffle 1 facing the roadway 7, and the round steel protrudes out of the end surface of the second V-shaped baffle 1 far away from the end of the bottom plate 8, so as to conveniently extend into the opening of the top plate 10. Of course, in other embodiments, the protruding portion 4 may also have other structures, which are not listed here.
As shown in fig. 2, in one embodiment, the second V-shaped baffle 1 is provided with a hook 6 for a worker or an elevator to lift the second V-shaped baffle 1.
In one embodiment, the locking assembly comprises a pair of cable cables 3, the pair of cable cables 3 are locked at the overlapped part of the first V-shaped baffle 2 and the second V-shaped baffle 1 at intervals, and the tightness of the connection of the overlapped part of the first V-shaped baffle 2 and the second V-shaped baffle 1 is adjusted by adjusting nuts on the cable cables 3.
Of course, in other embodiments, the locking assembly may take other configurations, which are not listed here.
In one embodiment, the lengths of the first V-shaped baffle 2 and the second V-shaped baffle 1 may be equal.
As shown in fig. 3, a plurality of waste rock retaining devices according to the embodiments of the present invention may be arranged along the length direction of the roadway, and the plurality of waste rock retaining devices may be arranged at equal intervals, for example, at intervals of 500mm, or may be arranged at unequal intervals.
One embodiment of the invention provides an installation method of a roadway waste rock blocking device, which is applied to a roof cutting, pressure relief and self-entry technology, wherein the roadway comprises a top plate 10 and a bottom plate 8, and the installation method comprises the following steps:
providing a first V-shaped baffle 2, fixedly connecting one end of the first V-shaped baffle 2 to the bottom plate 8 and close to the goaf 13, wherein the bending line of the first V-shaped baffle 2 is vertically arranged;
providing a second V-shaped baffle 1, and at least partially overlapping the second V-shaped baffle 1 and the first V-shaped baffle 2, wherein one end of the second V-shaped baffle 1 is connected with the top plate 10;
providing a locking assembly configured to limit separation of the first V-shaped baffle 2 and the second V-shaped baffle 1 and to allow the second V-shaped baffle 1 to move relative to the first V-shaped baffle 2 in the bend line direction;
wherein, the length of the first V-shaped baffle 2 and the second V-shaped baffle 1 is less than the distance between the top plate 10 and the bottom plate 8.
In one embodiment, the second V-shaped baffle 1 is provided with a hook 6; wherein with second V type baffle 1 and the partial overlapping setting of first V type baffle 2 and second V type baffle 1's one end connect in roof 10, include:
a lifter is provided, and the second V-shaped baffle plate 1 is partially overlapped on the first V-shaped baffle plate 2 and is connected with the top plate 10 by the lifter.
The installation of keeping off the waste rock structure among the correlation technique all relies on the manual work, in order to guarantee the entry effect among the working face exploitation process, need keep off the waste rock structure and follow closely the working face and impel, in time install, the waste rock caving irregularity just has certain impact nature, there is the potential safety hazard in the manual installation on the one hand, on the other hand keeps off waste rock structure weight and volume great, when adopting the manual work to lift the installation, there are the defect such as the manual operation degree of difficulty height, intensity of labour is big, factor of safety is low and the efficiency of construction is low. The mounting method of the invention utilizes a lifter to complete the action of lifting the second V-shaped baffle 1, thereby not only ensuring the roadway retaining effect and the use convenience of later-stage roadways and simplifying the construction process, but also reducing the labor force and improving the safety.
Specifically, as shown in fig. 4, the elevator may include a lifting head 31, an expansion rod 32, an air cylinder 33, a support base 34, and an intake air control valve 35. The hook 6 on the second V-shaped baffle 1 can be hung on the lifting head 31, and the cylinder 33 sucks high-pressure air to drive the second V-shaped baffle 1 to slowly rise to the installation position by controlling the air inlet control valve 35.
Of course, in other embodiments, the lifter may have another structure, and the hook 6 on the second V-shaped baffle 1 may be lifted.
In one embodiment, the length of the overlapping portion of the first V-shaped baffle 2 and the second V-shaped baffle 1 in the bending line direction is at least 1 m.
In the roadway forming process, the impact force caused by the gangue is mainly concentrated in the overlapping part area of the first V-shaped baffle 2 and the second V-shaped baffle 1, and in the embodiment, the length of the overlapping area is designed to be at least 1m, so that the area has stronger capacity of bearing the impact force of the gangue.
In one embodiment, the end of the second V-shaped baffle 1 away from the bottom plate 8 is provided with a protrusion 4, and the protrusion 4 extends into the opening of the top plate 10. Through the structural design, when the first V-shaped baffle 2 and the second V-shaped baffle 1 bear the impact force of the gangue, the whole structure can be prevented from toppling.
In conclusion, the roadway waste rock blocking device has the advantages and beneficial effects that:
this is disclosed mainly through designing into first V type baffle and second V type baffle can realize relative movement in tunnel direction of height to offset because the irregular of the tunnel roof that the waste rock caving caused sinks, avoided the crooked problem of protector among the correlation technique, ensure the lane effect in tunnel, show the security that has improved the tunnel. Meanwhile, due to the V-shaped shape design of the first V-shaped baffle and the second V-shaped baffle, the first V-shaped baffle and the second V-shaped baffle have strong impact resistance when facing the impact force of the gangue, cannot be easily deformed, and further ensure the lane forming effect.
In addition, through designing into "V type" structure and at least partial overlapping setting with two baffles for when second V type baffle slided for first V type baffle, the V type structure of first V type baffle plays orbital effect, makes the gliding more smooth and easy of second V type baffle, and two baffles are difficult for taking place the separation.
It should be noted here that the roadway mine spoil device shown in the drawings and described in this specification is only one example of the application of the principles of the present invention. It will be clearly understood by those skilled in the art that the principles of the present invention are not limited to any of the details or any of the components of the apparatus shown in the drawings or described in the specification.
It is to be understood that the invention is not limited in its application to the details of construction and the arrangement of components set forth in the description. The invention is capable of other embodiments and of being practiced and carried out in various ways. The foregoing variations and modifications fall within the scope of the present invention. It will be understood that the invention disclosed and defined in this specification extends to all alternative combinations of two or more of the individual features mentioned or evident from the text and/or drawings. All of these different combinations constitute alternative aspects of the present invention. The embodiments described in this specification illustrate the best mode known for carrying out the invention and will enable those skilled in the art to utilize the invention.
Claims (10)
1. The utility model provides a tunnel waste rock blocking device, is applied to the roof cutting release from becoming the lane technique, the adjacent goaf of locating in tunnel just includes roof and bottom plate, its characterized in that, tunnel waste rock blocking device includes:
one end of the first V-shaped baffle is fixedly connected to the bottom plate and is close to the goaf, and a bending line of the first V-shaped baffle is vertically arranged;
the second V-shaped baffle is at least partially overlapped with the first V-shaped baffle, and one end of the second V-shaped baffle is connected to the top plate; and
a locking assembly configured to restrict separation of the first and second V-shaped baffles at the overlapping portion and to allow movement of the second V-shaped baffle relative to the first V-shaped baffle in the bend line direction;
wherein the lengths of the first V-shaped baffle and the second V-shaped baffle are both smaller than the distance between the top plate and the bottom plate.
2. The roadway mine waste stopping device of claim 1, wherein concave surfaces of the first V-shaped baffle and the second V-shaped baffle face the gob.
3. The roadway mine stopping device of claim 1, wherein the length of the overlapping portion of the first V-shaped baffle and the second V-shaped baffle in the direction of the bend line is at least 1 m.
4. The roadway gangue stopping device according to claim 1, wherein a base is arranged at one end of the first V-shaped baffle, which is far away from the top plate, and the base is buried in the bottom plate.
5. The roadway gangue stopping device of claim 1, wherein a protruding portion is arranged at one end, far away from the bottom plate, of the second V-shaped baffle, and the protruding portion extends into the opening of the top plate.
6. The roadway gangue stopping device according to claim 1, wherein the second V-shaped baffle is provided with a hook.
7. The roadway gangue stopping device of claim 1, wherein the locking assembly comprises a pair of cable cables, and the pair of cable cables are locked at the overlapped part of the first V-shaped baffle and the second V-shaped baffle at intervals.
8. The installation method of the roadway waste rock blocking device is applied to a roof cutting pressure relief self-entry technology, the roadway is arranged adjacent to a goaf and comprises a top plate and a bottom plate, and the installation method is characterized by comprising the following steps:
providing a first V-shaped baffle, fixedly connecting one end of the first V-shaped baffle to the bottom plate and enabling the first V-shaped baffle to be close to the goaf, wherein a bending line of the first V-shaped baffle is vertically arranged;
providing a second V-shaped baffle, wherein the second V-shaped baffle and the first V-shaped baffle are at least partially overlapped, and one end of the second V-shaped baffle is connected to the top plate;
providing a locking assembly configured to limit separation of the first and second V-shaped baffles at the overlapping portion and to allow movement of the second V-shaped baffle relative to the first V-shaped baffle in the bend line direction;
wherein the lengths of the first V-shaped baffle and the second V-shaped baffle are both smaller than the distance between the top plate and the bottom plate.
9. The installation method of the roadway gangue stopping device according to claim 8, wherein the second V-shaped baffle is provided with a hook;
partially overlapping the second V-shaped baffle with the first V-shaped baffle and connecting one end of the second V-shaped baffle to the top plate, comprising:
and providing a lifter, lifting the hook by using the lifter, and partially overlapping the second V-shaped baffle plate on the first V-shaped baffle plate and connecting the second V-shaped baffle plate to the top plate.
10. The installation method of the roadway gangue stopping device of claim 8, wherein the length of the overlapped part of the first V-shaped baffle and the second V-shaped baffle in the bending line direction is at least 1 m; or the like, or, alternatively,
and one end of the second V-shaped baffle, which is far away from the bottom plate, is provided with a protruding part, and the protruding part extends into the opening of the top plate.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111236969A (en) * | 2020-03-30 | 2020-06-05 | 中国矿业大学(北京) | Roadway side wall supporting device and method |
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| GB435067A (en) * | 1934-06-04 | 1935-09-13 | Cyril Baguley | An improved method and means for building mine packs for supporting the roof in coal or other mines |
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Application publication date: 20200211 |