CN216429631U - Artificial bottom plate for preventing and treating roadway floor heave - Google Patents
Artificial bottom plate for preventing and treating roadway floor heave Download PDFInfo
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- CN216429631U CN216429631U CN202123169830.1U CN202123169830U CN216429631U CN 216429631 U CN216429631 U CN 216429631U CN 202123169830 U CN202123169830 U CN 202123169830U CN 216429631 U CN216429631 U CN 216429631U
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Abstract
The utility model discloses a prevent and treat artifical bottom plate of tunnel pucking belongs to coal mining technical field, and when the cushion was laid, bracing piece and cushion can provide just supporting force for the prefabricated plate, and the in-process linkage unit can provide invariable power for artifical bottom plate in the tunnel deformation, makes prefabricated plate, cushion and linkage unit form stable supporting construction jointly, and support intensity and rigidity and tunnel bottom plate country rock suit, can play comprehensive supporting effect to the tunnel bottom plate. The manual bottom plate adopts a modular structure, so that the iron plate can be conveniently detached for processing once bottom bulging occurs at the later stage of the roadway bottom plate, and the influence degree on production is reduced; meanwhile, the maintenance can be mechanized, the labor intensity is reduced, and the working efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of coal mining, a prevent and treat artifical bottom plate of tunnel pucking is related to.
Background
Roadway floor heave is a common mine pressure phenomenon in coal mines. With the gradual development of coal mining to deep parts, the tunnel bottom heave phenomenon becomes more and more serious, and the safety production and the economic benefit of coal mines are influenced to a great extent. The common method for treating roadway floor heave at present comprises a reinforcing method and a pressure relief method. The reinforcement method mainly controls the bottom heave through measures such as bottom plate anchoring or grouting, concrete inverted arch and the like; the pressure relief method is mainly characterized in that the bottom plate rock body is positioned in a stress reduction area through measures such as joint cutting, drilling, loosening blasting or hydraulic fracturing, and the like, so that the purpose of controlling the bottom drum is achieved.
The position of the bottom heave influenced by mine pressure is usually concentrated in the middle of the roadway, and although the method can effectively treat the bottom heave of the roadway, the conditions of complex construction process, high construction cost, incapability of reusing materials and influence on the production progress of the coal mine exist to different degrees.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide an artificial bottom plate for preventing and treating roadway floor heave.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
an artificial bottom plate for preventing and treating roadway floor heave is arranged between a working face coal pillar and a roadway coal pillar and comprises a cushion block and a prefabricated plate;
the two cushion blocks are respectively arranged at the bottom of the side wall of the working face coal pillar and the bottom of the side wall of the roadway coal pillar; a gap is arranged between the two cushion blocks;
the prefabricated plate is lapped on the upper surfaces of the two cushion blocks, one end of the prefabricated plate is in contact with the coal pillars of the roadway, a drainage ditch is reserved between the other end of the prefabricated plate and the coal pillars of the working surface, and a connecting unit is arranged at a gap below the prefabricated plate.
Preferably, the connection unit is formed by connecting two inclined support rods, the connection ends of the two support rods are fixed on the lower surface of the prefabricated slab, and the tail ends of the two support rods are respectively fixed on the cushion blocks at two sides.
Preferably, the prefabricated plate is formed by splicing a plurality of iron plates;
gaps are reserved between adjacent iron plates, and concrete is filled in the gaps.
Preferably, two hoisting rings are uniformly distributed on the upper surface of each iron plate;
the lower surface of each iron plate is provided with a connecting unit.
Preferably, the depth of the cushion block is 0.5-0.8m, and the width of the cushion block is 1/5 of the total width of the roadway.
Preferably, the cushion block is formed by pouring concrete.
Preferably, the length of the iron plate is 3-5m, the width of the iron plate is 0.3-0.5m less than the width of the roadway, and the thickness of the iron plate is 0.1 m.
Preferably, the included angle between the support rod and the precast slab is 15-75 degrees;
the support rod is an elastic support rod.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a prevent and treat artifical bottom plate of tunnel pucking, when the cushion was laid, bracing piece and cushion can provide just supporting power for the prefabricated plate, and the joining unit can give the artifical bottom plate and provide invariable power at tunnel deformation in-process, makes prefabricated plate, cushion and joining unit form stable supporting construction jointly, and support intensity and rigidity and tunnel bottom plate country rock suit, can play comprehensive supporting effect to the tunnel bottom plate. The manual bottom plate adopts a modular structure, so that the iron plate can be conveniently detached for processing once bottom bulging occurs at the later stage of the roadway bottom plate, and the influence degree on production is reduced; meanwhile, the maintenance can be mechanized, the labor intensity is reduced, and the working efficiency is improved. The method solves the problems that the mining roadway is affected by mine pressure to cause bottom heave deformation, the treatment process is complex, materials cannot be reused, and the coal mine production progress and economic benefit are affected. The artificial bottom plate is not only a supporting component of the roadway bottom plate, but also a bearing pavement of vehicles and pedestrians, and can effectively prevent the roadway from bottom heaving based on the following effects on the roadway bottom plate.
Furthermore, the supporting rod is of an elastic structure, can generate compression deformation when the bottom of the roadway bulges, delays the time for the bottom plate to bulge, and can push the roadway to pass through the area before the roadway fails when the advancing speed of the working face is high. The space at bracing piece place can fill flexible water absorption material, like dry laterite for absorb moisture, avoid soft rock tunnel to meet water inflation, flexible water absorption material provides the buffering space for the tunnel pucking simultaneously, can effectively reduce the influence of tunnel pucking to the bottom plate.
Furthermore, when the precast slab is close to the goaf, the iron plate can be recovered by the monorail crane, so that the recycling is realized, the consumed supporting materials are reduced, and the supporting cost is favorably reduced.
Drawings
FIG. 1 is a front view of the artificial bottom plate for preventing and treating roadway floor heave of the present invention;
FIG. 2 is a top view of the artificial bottom plate for preventing and treating roadway floor heave of the present invention;
wherein: 1-working face coal pillar, 2-roadway coal pillar, 3-cushion block, 4-prefabricated plate, 5-support rod, 6-drainage ditch, 7-hoisting ring and 8-gap.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The present invention will be described in further detail with reference to the accompanying drawings:
example 1
An artificial bottom plate for preventing and treating roadway floor heave is shown in figures 1 and 2, and is positioned between a working face coal pillar 1 and a roadway coal pillar 2, and comprises a cushion block 3 and a precast slab 4; the two cushion blocks 3 are respectively arranged at the bottom of the side wall of the working face coal pillar 1 and the bottom of the side wall of the roadway coal pillar 2; a gap is arranged between the two cushion blocks 3; the prefabricated plate 4 is lapped on the upper surfaces of the two cushion blocks 3, one end of the prefabricated plate 4 is in contact with the roadway coal pillars 2, a drainage ditch 6 is reserved between the other end of the prefabricated plate 4 and the working face coal pillars 1, and a connecting unit is arranged in a gap below the prefabricated plate 4. The connecting unit is formed by connecting two inclined supporting rods 5, the connecting ends of the two supporting rods 5 are fixed on the lower surface of the prefabricated plate 4, and the tail ends of the two supporting rods 5 are respectively fixed on the cushion blocks 3 on the two sides.
Example 2
The contents are the same as those of example 1 except for the following.
The prefabricated plate 4 is formed by splicing a plurality of iron plates; a gap 8 is reserved between the adjacent iron plates, and concrete is filled in the gap 8. Two hoisting rings 7 are uniformly distributed on the upper surface of each iron plate; the lower surface of each iron plate is provided with a connecting unit. The included angle between the support rod 5 and the prefabricated plate 4 is 15-75 degrees.
Example 3
An artificial bottom plate for preventing and treating floor heave of a roadway is positioned between a coal pillar 1 and a coal pillar 2 of the roadway on a working face, and consists of a cushion block 3, a prefabricated plate 4 and a supporting rod 5 which are laid on the bottom plate of the roadway in a lap joint manner. The cushion blocks 3 are formed by pouring concrete after the roadway is excavated, and a group of cushion blocks 3 are arranged on two sides of the roadway respectively. Tamping and smoothing a roadway bottom plate, respectively digging 1/5 grooves with the depth of 0.5-0.8m and the single width of the total width of the roadway in the roadway bottom plate along the edge of the roadway, and pouring high-strength concrete in the grooves to form a cushion block 3 for supporting the prefabricated iron plate. The upper surfaces of the side spacers 3 are maintained at a horizontal level to ensure the levelness of the prefabricated iron plate. The prefabricated plate 4 is formed by connecting a plurality of single iron plates, the length of the iron plates is 3-5m, the width of the iron plates is 0.3-0.5m less than the width of a roadway (the width of a drainage ditch and the deformation of the roadway need to be reserved), and the thickness of the iron plates is 0.1 m. Two hoisting rings 7 are uniformly distributed on the left and right sides of the upper surface of each iron plate, the hoisting rings 7 are hung by a monorail crane during installation, and the prefabricated iron plates are laid from front to back along the direction of a roadway bottom plate. When the iron plate is laid, one side of the iron plate is abutted against the edge of the roadway coal pillar and is kept horizontal. After the installation, the iron ring is placed back into the prefabricated groove, and the flatness of the iron plate is not affected. The middle part of the lower surface of the iron plate is provided with a connecting device for connecting two supporting rods 5, the tail ends of the two supporting rods 5 are respectively supported on the cushion blocks 3 at two sides, the initial supporting force strength of the supporting rods 5 is equivalent to the strength of the hardened cushion blocks 3, and the maximum working stress of the supporting rods does not exceed the allowable stress [ sigma ] of the rod piece. And a gap is reserved between each iron plate, and concrete is poured into the gap for water isolation of the bottom plate. And a drainage ditch is reserved on one side of the roadway and used for draining accumulated water on the working surface and the roadway.
It should be noted that, along with the stoping of the working face, the iron plates near the goaf can be selectively recycled according to the actual situation on site. The cushion block is formed by concrete mixed pouring. The support rod is an elastic support rod.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (8)
1. An artificial bottom plate for preventing and treating roadway floor heave is positioned between a working face coal pillar (1) and a roadway coal pillar (2), and is characterized in that the artificial bottom plate comprises a cushion block (3) and a precast slab (4);
two cushion blocks (3) are respectively arranged at the bottom of the side wall of the working face coal pillar (1) and the bottom of the side wall of the roadway coal pillar (2); a gap is arranged between the two cushion blocks (3);
the prefabricated plate (4) is lapped on the upper surfaces of the two cushion blocks (3), one end of the prefabricated plate (4) is in contact with the roadway coal pillars (2), a drainage ditch (6) is reserved between the other end of the prefabricated plate and the working face coal pillars (1), and a connecting unit is arranged in a gap below the prefabricated plate (4).
2. The artificial floor for controlling floor heave in roadways according to claim 1, characterized in that the connecting unit is composed of two inclined supporting rods (5) which are connected with each other, the connecting ends of the two supporting rods (5) are fixed on the lower surface of the precast slab (4), and the tail ends of the two supporting rods (5) are respectively fixed on the cushion blocks (3) at both sides.
3. The artificial bottom plate for preventing and treating roadway floor heave according to claim 1, characterized in that the prefabricated plate (4) is formed by splicing a plurality of iron plates;
a gap (8) is reserved between the adjacent iron plates, and concrete is filled in the gap (8).
4. The artificial bottom plate for preventing and treating roadway floor heave according to claim 3, is characterized in that two hoisting rings (7) are uniformly distributed on the upper surface of each iron plate;
the lower surface of each iron plate is provided with a connecting unit.
5. The artificial bottom plate for preventing and treating floor heave of a roadway according to claim 1, characterized in that the depth of the cushion blocks (3) is 0.5-0.8m, and the width of the cushion blocks (3) is 1/5 of the total width of the roadway.
6. The artificial bottom plate for preventing and treating roadway floor heave according to claim 1, is characterized in that the cushion block (3) is formed by pouring concrete in a mixed mode.
7. The artificial bottom plate for preventing and treating roadway floor heave according to claim 3, is characterized in that the length of the iron plate is 3-5m, the width of the iron plate is 0.3-0.5m less than the width of a roadway, and the thickness of the iron plate is 0.1 m.
8. The artificial bottom plate for preventing and treating roadway floor heave according to claim 1, characterized in that the included angle between the support rod (5) and the precast slab (4) is 15-75 degrees;
the supporting rod (5) is an elastic supporting rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123169830.1U CN216429631U (en) | 2021-12-14 | 2021-12-14 | Artificial bottom plate for preventing and treating roadway floor heave |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123169830.1U CN216429631U (en) | 2021-12-14 | 2021-12-14 | Artificial bottom plate for preventing and treating roadway floor heave |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216429631U true CN216429631U (en) | 2022-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123169830.1U Active CN216429631U (en) | 2021-12-14 | 2021-12-14 | Artificial bottom plate for preventing and treating roadway floor heave |
Country Status (1)
| Country | Link |
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| CN (1) | CN216429631U (en) |
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2021
- 2021-12-14 CN CN202123169830.1U patent/CN216429631U/en active Active
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