CN112127922A

CN112127922A - Waste coal mine chamber reinforcing method

Info

Publication number: CN112127922A
Application number: CN202011000302.0A
Authority: CN
Inventors: 宋功业; 孙志磊; 苏长芹; 杨金强; 刘萌; 王青
Original assignee: Jiuzhou Polytechnic
Current assignee: Jiuzhou Polytechnic
Priority date: 2020-09-22
Filing date: 2020-09-22
Publication date: 2020-12-25

Abstract

The method for reinforcing the waste coal mine chamber is designed for reinforcing the chamber at the vertical and horizontal intersection, and belongs to the field of safety facilities; the reinforcement of the waste coal mine chamber is realized by adding a reinforcement facility at the chamber part; the reinforcing facilities comprise upright posts, top beams, top plates, wall plates, rivet bolts, side anchors, additional layer beams and additional layer plates; wherein the top beam is positioned at the top end of the upright post and is vertically and fixedly connected with the upright post; the top plate is positioned at the upper part of the top beam and is fixedly connected with the top structure of the roadway through a blind rivet, and the wall plate is positioned between the stand columns and is fixedly connected with the wall of the roadway into a whole through a side anchor; the laminated beam and the laminated plate are positioned in the middle of the upright post and return to the middle of the upright post to form a laminated structure; in order to expand the functions, a sanitary facility is additionally arranged on one floor; the invention has the advantages of increasing the safety performance of the chamber and increasing the use function of the chamber.

Description

Waste coal mine chamber reinforcing method

Technical Field

The invention discloses a method for reinforcing a waste coal mine chamber, which is designed for reinforcing the chamber at a longitudinal and transverse intersection and belongs to the field of safety facilities.

Background

The coal mining is carried out forward along a roadway, two important life lines exist during coal mining, one life line is the roadway for mining coal, and the roadway for mining coal continuously extends along with the coal mining; the other is a conveying line, namely the mined coal is conveyed to a main well or an auxiliary well and then conveyed out; two underground transportation lines for coal mining are provided, one underground transportation line is a roadway formed by coal mining and is a temporary transportation line; the other is a transfer line, which is a relatively fixed line for transferring the mined coal to a main well or an auxiliary well; generally, the two lines are mostly not on the same straight line, and have a certain height difference; a transition space is arranged at the intersection part of the mining transportation line and the transfer line, and is called as a chamber, and the transition space is used as a place for temporary stacking of material equipment and temporary rest of personnel during coal mining;

the mining transportation line is characterized in that deep roadways are left after coal is mined, supporting of the roadways is temporary, in the years that the technology is laggard and safety is not paid attention to, the roadways are supported by wood bars and wood boards, and when the wood is rotted or loses supporting capacity due to other reasons, the roadways collapse; the reason is that the ground of the mining area often has large-area collapse; the prior art is relatively advanced, and under the condition that great importance is placed on safety, most roadways are supported by reinforced concrete, so that the supporting cost is high, the safety performance is relatively improved, but after all, the roadway is a temporary facility, and after coal is mined, if the coal is abandoned, the roadway is compacted by adopting a grouting and backfilling method; if retained, reinforcement is necessary;

the transfer line has commonality and relatively firm support, when coal mining is finished or the part of the roadway can be used as an underground storeroom at ordinary times and can be used as a civil air defense project in wartime, and the related roadway chambers are reinforced and improved to form relatively safe storerooms or civil air defense projects; the method for reinforcing the waste coal mine chamber can achieve the purpose.

Disclosure of Invention

The specific method of the scheme is as follows: as shown in fig. 1, the addition of beams, plates, columns, top plates and wall plates to the original chamber can make the chamber safe and reliable and increase the use function; if the sanitary facilities are additionally arranged on the first floor after the storey-adding transformation and the kitchen and toilet facilities are arranged on the second floor, the simple conditions of temporary personnel life can be met, the lighting, water supply and air exchange of the underground chamber can be realized, the related facilities can be arranged in the auxiliary shaft, the sewage is discharged, and the corresponding facilities can be additionally arranged in the main shaft, so that the problem can be solved.

The waste coal mine chamber reinforcing facility is formed by upright posts, top beams, top plates, wall plates, rivet bolts, side anchors, a layering beam and a layering plate; the upright posts are rod-shaped components vertically arranged along the wall of the tunnel of the chamber; preferably, the top beam is made of 22-size I-steel, brackets made of 90 mm-long 100-size angle steel are arranged on the upper flanges and the web plates of two opposite vertical columns at proper positions away from the top, the top beam is connected to the brackets through bolts by the vertical columns, and the middle part of each vertical column is connected with the additional layer beam through the brackets and the bolts to form an integral structure; the bottom of the upright post is connected with the ground of the chamber into a whole; the wall plates are arranged in the empty spaces defined by the upper upright posts and the upright posts, the top beam and the middle laminated beam, and the empty spaces defined by the lower upright posts and the upright posts, the middle laminated beam and the ground of the underground chamber.

The top beam is a rod-shaped component horizontally arranged at the top end of the upright column, and is preferably made of 18 # I-steel, and bolt holes are reserved on the lower flange plates at the two ends of the top beam and are connected with the top end of the upright column through bolts; a top plate is horizontally arranged at the upper part of the top beam; the lower part of the lower flange plate of the top beam and the middle of the upright column at a distance of 500 mm and at an interval of 2 m are provided with No. 8 channel steel with the length of 60 mm, the notch faces downwards, and the wall plate is vertically arranged between the top beam and the laminated beam through the channel steel.

The top plate is a reinforced concrete plate positioned at the upper part of the top beam, and is preferably made of prefabricated components; the hole of diameter 30 millimeters is reserved to the distance of roof face interval 0.5 meters, and the hole is by long 100 millimeters external diameter 38 millimeters, the steel pipe preparation of wall thickness 3 millimeters, and the hole is the quincunx on the reinforced concrete face and arranges, and the roof is the platelike part of level setting on the back timber, and tunnel top structure is pressed close to on roof upper portion, concreties through rivet and tunnel top structure.

The wall plates are respectively plate-shaped components arranged between the top beam and the layered beam and between the layered beam and the ground of the underground chamber, and are preferably made of prefabricated reinforced concrete plates, and the wall plates are parallel to the walls of the roadway; and an anchoring hole is reserved on the wall plate, the anchoring hole is reserved in the anchoring space and is arranged according to a reserved hole on the top plate, and the wall plate close to the roadway wall is fixedly combined with the wall plate into a whole through a side anchor after the installation is finished.

The material and the manufacturing method adopted by the laminated beam are carried out by referring to the top beam; it is worth noting that the additional layer beam at the entrance and exit of the chamber needs to be disconnected, and the disconnected part of the additional layer beam is connected with the door column.

Entrance and exit of chamber, upper and lower two-layer all are keeping somewhere towards tunnel one side, and the gatepost all adopts 8 channel-section steels preparation with the door beam, and upper access & exit suspended portion can set up platform, railing, and these settings do not belong to the reinforcement method category of this scheme, and belong to conventional design, no longer give unnecessary details.

The laminated plate is positioned on the layer surface of the middle laminated beam of the upright column and is preferentially recommended to be made of laminated plates; after the additional layer beam and the wall plate are installed, the prefabricated reinforced concrete plate can be laid on the additional layer beam, the bidirectional double-layer reinforced net piece is laid on the plate surface, and then the concrete layer is poured.

A method for reinforcing a waste coal mine chamber is characterized in that upright posts are arranged at intervals on the wall of a roadway and are vertical to the ground; when the upright posts are installed, the four corners of the chamber are positioned, the lower ends of the upright posts are fixedly connected with the ground of the chamber, and the upper ends of the upright posts are fixedly connected with the original top structure of the chamber; arranging a layering beam and a layering plate in the middle of the upright column, arranging a top beam and a top plate on the top surface of the upright column, and fixedly connecting the top plate with the original top structure of the chamber through a rivet; arranging a wall plate between the upright posts, and fixedly connecting the wall plate with the roadway wall through a side anchor; the chamber forms a safe stable space; after the space and verticality of the stand columns meet the requirements, the top beam and the additional layer beam are sequentially installed, the column base is fixed, the top plate, the wall plate and the additional layer plate are installed, and the blind rivet and the side anchor are installed.

The invention has the advantages of increasing the safety performance of the chamber and increasing the use functions of the chamber and a roadway.

Drawings

FIG. 1 is a schematic view of reinforcement of a waste coal mine chamber (a section view of 1-1);

fig. 22-2 is a sectional view.

In the figure: 1-reinforcement facilities; 11-upright post; 12-a top beam; 13-a top plate; 14-wall plates; 15-pulling a rivet; 16-side anchor; 17-adding a layer beam; 18-adding a layer plate; 19. 110-a sanitary facility; 2-original facilities; 21-a roadway wall; 22-roadway top structure; 23-coal transportation facilities; 24-a vertical ladder; z-main well removing direction; c-removing coal mining direction.

Detailed Description

Examples

Reinforcing and reforming a coal transportation roadway and part of coal mining roadways in a certain waste coal mine area to form a popular science base and a historical cultural evidence base, and also can be used as underground storage at ordinary times and civil air defense engineering in wartime; the method comprises the following steps of (1) carrying out reinforcement and reconstruction on a chamber as shown in figures 1 and 2 by a coal mining roadway (a roadway in a coal mining direction is shown in the figure) and a transportation roadway (a roadway in a main shaft direction is shown in the figure), wherein the chamber is extended by 3 meters in the transportation roadway direction, is extended by 6 meters in the coal mining roadway direction, is the same as the ground of the transportation roadway in elevation, is the same as the top of the coal mining roadway in elevation, and has the height difference of 3 meters between the ground of the coal mining roadway and the ground of the transportation roadway, and the reinforcement scheme is that a plurality of columns, beams, top plates, wall plates and doors, two layers of outdoor platforms, one-floor sanitary facilities and other facilities are added in the original chamber with the length of 6 meters and the width of 3 meters, so that the; the sanitary facilities are additionally arranged on the first floor after the storey-adding transformation, kitchen and bathroom facilities are arranged on the second floor, so that the simple living conditions of temporary personnel can be met, related facilities can be arranged in the auxiliary shaft for lighting, water supply and air exchange of the underground chamber, sewage is discharged, and corresponding facilities can be additionally arranged in the main shaft, so that the problem can be solved.

The waste coal mine chamber reinforcing facility is characterized in that a reinforcing facility 1 consists of upright posts 11, a top beam 12, a top plate 13, wall plates 14, rivet bolts 15, side anchors 16, a layering beam 17 and a layering plate 18;

the upright post 11 is a rod-shaped component vertically arranged along the roadway wall 21 of the chamber; the scheme is made of No. 22I-steel, 6 columns are 6 meters long, a steel plate with the length of 26 millimeters, the width of 16 millimeters and the thickness of 20 millimeters is welded at the top end of each column top and the top end of each column base, the center of each steel plate is coincided with the center of each upright column 11, holes with the diameter of 12 millimeters are formed in the positions, 20 millimeters away from the plate edges, of four corners of each steel plate, and the steel plates are used as expansion bolt reserved holes for fixing the columns, the ground and the top surface of a chamber; 4 triangular stiffening plates are arranged at the top ends of the steel plates and the upright columns 11 to strengthen the connection between the steel plates and the I-shaped steel; the upright posts 11 are arranged at the middle parts of the wall corners and the chamber walls, and the center distance is 2.78-2.88 meters; brackets made of No. 100 angle steel with the length of 90 mm are arranged on the upper wing edges and the web plates of the two opposite upright posts 11 and 280 mm away from the tops of the upright posts 11, and the upright posts 11 connect the top beam 12 to the brackets through U-shaped bolts; a bracket is arranged at the position with the middle elevation of 2.72 meters of the upright post 11, the arrangement method, the size and the shape of the bracket are the same as those of the bracket at the top of the upright post, and the upright post 11 is connected with a story-adding beam 17 through the bracket, a bolt and an integral structure; the bottom of the upright post 11 is connected with the ground of the chamber into a whole through an expansion bolt with the diameter of 10 mm; a neutral space between the top beams 12 and the middle laminated beam 17 between the upper upright columns 11 and a neutral space between the middle laminated beam 17 and the ground of the underground chamber between the lower upright columns 11 are provided with wall plates 14; door openings with the height of 2 meters and the width of 1 meter are reserved in the upper layer and the lower layer between the upright columns 11 at the inlet and the outlet, the 3 surfaces of the door openings are surrounded by No. 6 channel steel, and the door openings, the adjacent upright columns 11, the top beam 12 and the middle laminated beam 17 are tied by No. 6 channel steel or in a horizontal or longitudinal mode to form a whole; set up the platform of 6 meters wide 2 meters of length in front of the upper portal, the stand of platform, move about freely and quickly the roof beam and all adopt 10 channel-section steels preparation, the steel sheet that the platform face is 3 millimeters with thickness is laid, and the platform component all adopts welded connection, and platform surface elevation is the same with second floor ground elevation.

The top beam 12 is a rod-shaped component horizontally arranged at the top end of the upright post 11 and is made of 18-gauge I-steel, the beam length is made according to two types of 2.78 meters and 2.88 meters, and bolt holes are reserved on lower flange plates at two ends of the top beam 12 and are connected with the top end of the upright post 11 through U-shaped bolts; a top plate 13 is horizontally arranged at the upper part of the top beam 12; no. 8 channel steel with the length of 60 millimeters is arranged at the position, 2 meters away from the middle of the 500 millimeter position, of the lower portion of the lower flange plate of the top beam 12 and the upright post 11, the notch is opposite to the wall plate 14, and the wall plate 14 is vertically arranged between the top beam 12 and the laminated beam 17 through the channel steel.

The top plate 13 is a reinforced concrete plate positioned at the upper part of the top beam 12, and is made into a length of 2.98 meters, a width of 1.5 meters and a thickness of 100 millimeters by adopting prefabricated components; the surface of the top plate 13 is provided with through holes with the diameter of 30 millimeters at intervals of 0.5 meter, the holes are made of steel pipes with the length of 100 millimeters and the outer diameter of 38 millimeters and the wall thickness of 3 millimeters and are pre-embedded in the top plate 13, the holes are arranged on the surface of the reinforced concrete plate in a quincunx shape, the upper part of the top plate 13 is close to the top structure 22 of the roadway, and the through holes are fixedly connected with the top structure 22 of the roadway in the chamber through pull rivets 15.

The wall plates 14 are plate-shaped components respectively arranged between the top beam 12 and the laminated beam 17 and between the laminated beam 17 and the ground of the underground chamber, prefabricated plates which are made of reinforced concrete and have the length of 2520 mm and the width of 100 mm, 300 mm, 600 mm and 900 mm and the thickness of 100 mm are respectively adopted, the wall plates 14 are parallel to the roadway wall 21, when the upper wall plate is installed, firstly, No. 6 channel steel with the length of 50 mm positioned at the lower part of the top beam 12 and the upper part of the laminated beam 17 or channel steel positioned at the lower part of the laminated beam 17 is integrally positioned at the top and the bottom of the plate, then, the channel steel of the upper wall plate 14 is welded at the lower part of the top beam 12 and the upper part of the laminated beam 17, and the channel steel at the top of the lower wall plate; and (3) reserving anchor holes with the diameter of 12 mm on the wall plate 14, setting the rest of the anchor holes according to the reserved holes on the top plate 13, and fixedly connecting the wall plate 14 close to the roadway wall 21 with the wall plate 14 into a whole through side anchors 16 after the installation is finished.

The rivet 15 is made of an expansion bolt with the diameter of 24 mm, after the top plate is installed and adjusted in place, a hole is drilled in a roadway top structure 22 in the chamber through a reserved hole in the top plate 13 by using an electric hammer, and the expansion bolt is screwed down.

The side anchors 16 are made of expansion bolts with the diameter of 10 mm, after the wall plate 14 is installed and adjusted in position, holes are drilled in the tunnel wall 21 of the chamber through the preformed holes of the wall plate 14 by using electric hammers, and the expansion bolts are screwed.

The material and the manufacturing method adopted by the laminated beam 17 are carried out by referring to the top beam 12; it is worth noting that the additional layer beam 17 at the entrance and exit of the chamber needs to be disconnected, and the disconnected part of the additional layer beam 17 is connected with the door column.

The laminated plate 18 is positioned on the layer surface of the middle laminated beam 17 of the upright post 11, and a prefabricated plate with the thickness of 60 is adopted as a permanent template, and a cast-in-situ reinforced concrete slab with the thickness of 40 mm is arranged on the prefabricated plate to manufacture a laminated plate; after the additional layer beam 17 and the wall plate 14 are installed, a prefabricated reinforced concrete plate can be laid on the additional layer beam 17, a reinforced net piece is laid on the plate surface, and then a concrete layer is poured.

A method for reinforcing a waste coal mine chamber is characterized in that upright posts 11 are arranged at intervals on a roadway wall 21, and the upright posts 11 are perpendicular to the ground; when the upright post 11 is installed, the four corners of the chamber are positioned, and the upper end and the lower end of the upright post are fixedly connected with the ground of the chamber and the original top structure of the chamber by expansion bolts; attention must be paid to the direction of the upright post 11, the web directions of 4 upright posts 11 at the four corners of the chamber are parallel to the length direction of the chamber, and the web directions of 2 upright posts 11 in the middle of the chamber wall are vertical to the length direction; the position of the bracket is noticed when the upright post 11 is manufactured, and the direction of the bracket is noticed when the upright post is installed; arranging a layering beam 17 and a layering plate 18 in the middle of the upright post 11, arranging a top beam 12 and a top plate 13 on the top surface of the upright post 11, and fixedly connecting the top plate 13 with the original top structure of the chamber through a rivet 15; arranging wall plates 14 between the vertical columns 11, and fixedly connecting the wall plates 14 with the roadway wall 21 through side anchors 16; the chamber forms a safe stable space; after the space and the verticality of the upright columns 11 meet the requirements, the top beam 12 and the story-adding beam 17 are sequentially installed, the column base is fixed, the top plate 13, the wall plate 14 and the story-adding plate 18 are installed, and the blind rivet 15 and the side anchor 16 are installed.

Claims

1. A waste coal mine chamber reinforcing facility is characterized in that the reinforcing facility (1) comprises upright posts (11), top beams (12), top plates (13), wall plates (14), rivet bolts (15), side anchors (16), a laminated beam (17) and a laminated plate (18); wherein the top beam (12) is positioned at the top end of the upright post (11) and is vertically fixedly connected with the upright post (11); the top plate (13) is positioned at the upper part of the top beam (12) and is fixedly connected with a roadway top structure (22) through a blind rivet (15), and the wall plate (14) is positioned between the upright columns (11) and is fixedly connected with a roadway wall (21) into a whole through a side anchor (16); the laminated beam (17) and the laminated plate (18) are positioned in the middle of the upright post (11) and are integrated with the middle of the upright post (11) to form a laminated structure;

a method for reinforcing a waste coal mine chamber is characterized in that upright posts (11) are arranged at intervals on a roadway wall (21) to enable the upright posts (11) to be vertical to the ground; arranging a layering beam (17) and a layering plate (18) in the middle of the upright column (11), arranging a top beam (12) and a top plate (13) on the top surface of the upright column (11), and fixedly connecting the top plate (13) with the original top structure of the underground chamber through a rivet (15); wall plates (14) are arranged between the vertical columns (11), and the wall plates (14) are fixedly connected with the roadway wall (21) through side anchors (16); the chamber forms a safe stable space; when the upright columns (11) are installed, the four corners of the chamber are positioned, the lower ends of the upright columns are fixedly connected with the ground of the chamber, and the upper ends of the upright columns are fixedly connected with the original top structure of the chamber; after the space and the verticality of the upright columns (11) meet the requirements, the top beam (12) and the laminated beam (17) are sequentially installed, the column base is fixed, then the top plate (13), the wall plate (14) and the laminated plate (18) are installed, and then the pull rivet (15) and the side anchor (16) are installed.

2. The method for strengthening a waste coal mine chamber according to claim 1, wherein the pillars (11) are rod-shaped members vertically arranged along the wall (21) of the chamber; the upright columns (11) are connected into an integral structure through a top beam (12) and a middle laminated beam (17); the bottom of the upright post (11) is connected with the ground of the chamber into a whole; and the wall plates (14) are arranged in the empty spaces enclosed between the upper upright columns (11) and the upright columns (11), between the top beam (12) and the middle laminated beam (17) and in the empty spaces enclosed between the lower upright columns (11) and the upright columns (11), between the middle laminated beam (17) and the ground of the underground chamber.

3. The method for strengthening the waste coal mine chamber, as recited in claim 1, wherein the top beam (12) is a rod-shaped member horizontally disposed at the top end of the vertical column (11), the top plate (13) is horizontally disposed at the upper part of the top beam (12), and the wall plate (14) is vertically disposed at the lower part.

4. The method for strengthening the waste coal mine chamber according to claim 1, wherein the top plate (13) is a plate-shaped component horizontally arranged on the top beam (12), and the upper part of the top plate (13) is close to the top structure (22) of the roadway and is fixedly connected with the top plate (13) through a rivet (15).

5. The method for strengthening a waste coal mine chamber according to claim 1, wherein the wall plate (14) is a plate-like member respectively arranged between the roof beam (12) and the story beam (17) and between the story beam (17) and the chamber floor, the wall plate (14) is parallel to the roadway wall (21), and the wall plate (14) adjacent to the roadway wall (21) is integrally fixed to the wall plate (14) by side anchors (16).