CN217632517U

CN217632517U - Stock support is supporting device in coordination suitable for rectangle tunnel

Info

Publication number: CN217632517U
Application number: CN202221439593.8U
Authority: CN
Inventors: 陈见行; 刘鹏
Original assignee: China University of Mining and Technology Beijing CUMTB
Current assignee: China University of Mining and Technology Beijing CUMTB
Priority date: 2022-06-09
Filing date: 2022-06-09
Publication date: 2022-10-21
Anticipated expiration: 2032-06-09

Abstract

The utility model belongs to the coal mine tunnel consolidates supporting equipment field, concretely relates to stock support is supporting device in coordination suitable for rectangle tunnel, including following step: after the excavation of colliery rectangle tunnel, at first can let and press the base tiling on the tunnel bottom plate, can let to press the support leg to insert in the base spacing groove about two sides will be in the tunnel, will let to press the back timber to keep flat after fixed the completion and can let to press on the support leg, simultaneously with can letting to press the bracing piece to support, and insert the tunnel country rock through the screw hole of predetermineeing on the support with the cavity slip casting stock, then it is fixed to use spacing tray and nut, finally make rectangle support and stock connect and strut as a whole, the cooperative supporting effect of full play rectangle support and stock. The utility model has the advantages of simple structure, bearing capacity are strong and safe and reliable, can effectively strut deep colliery rectangle tunnel.

Description

Stock support is supporting device in coordination suitable for rectangle tunnel

Technical Field

The utility model belongs to the equipment field is strutted in the reinforcement of coal mine tunnel, concretely relates to stock support is supporting device in coordination suitable for rectangle tunnel.

Background

The exploratory reserves of the coal resources in China are extremely rich, and the coal yield is stable in the first of all the countries in the world in recent years. With the increase of energy demand and the gradual increase of mining intensity, shallow coal resources are gradually consumed, and the mining depth of the mine gradually increases. As the mining depth increases, the problems of "high earth pressure, high ground temperature, high osmotic pressure and dynamic load disturbance" become increasingly prominent. In coal mining, rectangular roadways are a common form of section. In a deep mining environment, how to ensure the safe use of the rectangular roadway is a difficult problem which needs to be solved urgently. The current supporting method for the shallow rectangular roadway in China mainly comprises anchor rod supporting, anchor net supporting, anchor spraying supporting, anchor net spraying supporting, hydraulic prop supporting, anchor cable supporting, anchor net cable combined supporting, U-shaped steel support supporting and the like. Among these support methods, anchor bolt support, which is a common support method, has the characteristics of convenience in construction, simple structure and convenience in transportation. However, as the mining depth gradually increases, the burial depth of the coal mine roadway is continuously increased, the crushing degree of the surrounding rock anchored by the anchor bolt support gradually increases, and a stable anchoring body is not easy to form, so that the roadway is frequently overhauled. The expected effect is difficult to achieve by using the anchor rod alone, so that serious potential safety hazards exist in coal mine production. Therefore, design a device that is applicable to rectangle tunnel and stock support and strut in coordination, to guaranteeing coal mine safety in production and promoting production efficiency and have important engineering meaning.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a device suitable for rectangle tunnel and stock support are strutted in coordination, the device can stabilize the support and protect the rectangle tunnel in deep colliery to can effectively promote the production efficiency in colliery.

The utility model discloses a following technical scheme, can let and press the base tiling on the tunnel bottom plate, can let and press the support leg to insert in the base spacing groove about two groups in tunnel, and insert the tunnel country rock through the screw hole that can let to press the support leg on with cavity slip casting stock, then use spacing tray and nut fixed, will let after fixed the pressure back timber keep flat on can letting to press the support leg, and will let to press the bracing piece to place on spacing tray, later insert the tunnel country rock through the screw hole that can let to press the roof timber on predetermineeing with cavity slip casting stock, then use spacing tray and nut fixed, finally make rectangle support and stock connect to be one and strut wholly.

The yielding base, the yielding bracket legs, the yielding top beam and the yielding support rod are all formed by connecting cylindrical rod bodies and cylindrical springs. The yielding base and the yielding supporting rod are internally connected with a cylindrical spring, and the yielding support leg and the yielding top beam are internally connected with two cylindrical springs. The yielding support rod is supported on the yielding support leg through the mechanical occlusal force generated by the limiting tray.

The yielding base and the yielding support leg are connected through mechanical occlusion force generated by the base limiting groove arranged on the yielding base, and the yielding support leg is fixed on two sides of a roadway by using a hollow grouting anchor rod.

The pressure-yielding top beam is horizontally placed at a limiting position reserved for the pressure-yielding support legs, and meanwhile, the pressure-yielding top beam is fixed on a roadway top plate through a hollow grouting anchor rod. The hollow grouting anchor rod is fixed on the bracket through the limiting tray and the nut, so that the overall rigidity and strength of the device can be effectively improved; the grout stop plug can prevent the anchoring agent from leaking back to the inner side of the roadway.

By the technical scheme of the utility model it is visible, a stock support supporting device in coordination suitable for rectangle tunnel is after rectangle tunnel excavation, at first will let and press the base tiling on the tunnel bottom plate, can let in the base spacing groove about will both sides in tunnel two group, will let after fixed completion and press the back timber to keep flat can let and press the support leg, support with can letting to press the bracing piece simultaneously, and insert the tunnel country rock with the cavity slip casting stock through the screw hole of predetermineeing on the support, then it is fixed to use spacing tray and nut, finally make rectangle support and stock connect to be one and strut wholly. Furthermore, the utility model discloses combine stock and support, fix to a support whole, this makes whole supporting system when receiving the exogenic action, and rectangle support, stock and country rock can the coupling effect, make whole supporting system's crushing resistance and stability obtain showing and promote. To sum up, the utility model has the advantages of simple structure, bearing capacity are strong and safe and reliable.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention and are not intended to constitute an undue limitation on the invention. In the drawings:

fig. 1 is a stock support supporting arrangement in coordination suitable for rectangle tunnel. In the figure: 1. the base can be let to press; 2. the bracket legs can be pressed; 3. the support rod can be pressed; 4. the top beam can be let to press; 5. a limiting tray; 6. a nut; 7. a hollow grouting anchor rod; 8. a grout stopping plug; 9. a base limiting groove; 10. a cylindrical spring; 11. surrounding rocks; 12. an anchoring agent.

Fig. 2 is a partial enlarged view of the position a in fig. 1 according to the present invention.

Fig. 3 is a partial enlarged view of the position B in fig. 1 according to the present invention.

Detailed Description

The utility model provides a stock support is strutting arrangement in coordination suitable for rectangle tunnel, for making utility model's purpose, technical scheme and effect clear more, clear and definite, the following further detailed description of its implementation mode to this utility model's schematic diagram. It should be understood that the invention described herein is only for the purpose of explanation and is not intended to be limiting. The specific implementation mode is as follows:

the anchor rod support collaborative supporting device suitable for the rectangular roadway comprises the following steps: will let and press base (1) tiling on the tunnel bottom plate, can let and press support leg (2) to insert in base spacing groove (9) about will both sides at two groups in tunnel, and with cavity slip casting stock (7) through can letting press the screw hole of predetermineeing on support leg (2) and insert tunnel country rock (11), then use spacing tray (5) and nut (6) fixed, will let after fixed accomplishing and press back timber (4) and keep flat on can letting press support leg (2), and will let and press bracing piece (3) to place on spacing tray (5), later insert tunnel country rock (11) through can letting press the screw hole of predetermineeing on back timber (4) with cavity slip casting stock (7), then use spacing tray (5) and nut (6) fixed, finally make rectangle support and stock connect and strut as a whole. The overall supporting schematic diagram of the utility model is shown in figure 1.

Can let and press base (1), can let and press a support leg (2), can let and press back timber (4) and can let and press bracing piece (3) all to be connected by the cylinder body of rod and cylinder spring (10) and form, can let and press base (1) and can let and press bracing piece (3) in-connection have a cylinder spring (10), can let and press a support leg (2) and can let and press back timber (4) in-connection have two cylinder springs (10).

The yielding support rod (3) is supported on the yielding support leg (2) through a mechanical biting force generated by the limiting tray (5), and the schematic diagram of the yielding support rod is shown in figure 2. The yielding base (1) and the yielding support leg (2) are connected through a mechanical force occluding force generated by a base limiting groove (9) arranged on the yielding base (1), and the schematic diagram is shown in figure 3. Meanwhile, the pressure support legs (2) can be fixed on two sides of the roadway by using hollow grouting anchor rods (7), and the schematic diagram is shown in figure 2.

Can let pressure back timber (4) keep flat in can letting the spacing department that pressure support leg (2) reserved, can let pressure back timber (4) use cavity slip casting stock (7) to fix on the tunnel roof simultaneously.

The hollow grouting anchor rod (7) is fixed on the bracket through the limiting tray (5) and the nut (6), so that the overall rigidity and strength of the device can be effectively improved; the grout stop plug (8) can prevent the anchoring agent (12) from leaking back to the inner side of the roadway, and a schematic view thereof is shown in figure 2.

The foregoing is only a preferred embodiment. The protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also covered by the protection scope of the present invention.

Claims

1. The utility model provides an anchor rod support is supporting device in coordination suitable for rectangle tunnel which characterized in that: will let and press the base tiling on the tunnel bottom plate, will let about two sides in the tunnel two group and press the support leg to insert in the base spacing groove, will let after fixed the pressure back timber and keep flat can let and press the support leg on, support with can letting to press the bracing piece simultaneously to insert the tunnel country rock through the screw hole of predetermineeing on the support with cavity slip casting stock, then use spacing tray and nut fixed, finally make rectangle support and stock connect to be one and strut wholly.

2. The anchor rod bracket cooperative supporting device suitable for the rectangular roadway, according to claim 1, is characterized in that: the pressure-yielding base, the pressure-yielding bracket leg, the pressure-yielding top beam and the pressure-yielding support rod are formed by connecting cylindrical rod bodies and cylindrical springs, the cylindrical springs are connected in the pressure-yielding base and the pressure-yielding support rod, and the two cylindrical springs are connected in the pressure-yielding bracket leg and the pressure-yielding top beam.

3. The anchor rod bracket cooperative supporting device suitable for the rectangular roadway, according to claim 1, is characterized in that: the mechanical occluding force generated by the pressure-yielding support rod through the limiting tray is supported on the pressure-yielding support leg.

4. The anchor rod support cooperative supporting device suitable for the rectangular roadway is characterized in that: can let and press the base and can let and press a support leg and produce mechanical bite through arranging the base spacing groove that can let on pressing the base and connect, can let simultaneously press a support leg and use the cavity slip casting stock to fix two sides in the tunnel.

5. The anchor rod support cooperative supporting device suitable for the rectangular roadway is characterized in that: the pressure-yielding top beam can be flatly placed at a limiting position reserved for the pressure-yielding support legs, and meanwhile, the pressure-yielding top beam can be fixed on a roadway top plate through a hollow grouting anchor rod.