CN217897905U

CN217897905U - Mine tunnel support

Info

Publication number: CN217897905U
Application number: CN202220691340.3U
Authority: CN
Inventors: 张志智; 白旭栋; 来红祥; 黎劲东; 张飞龙
Original assignee: National Energy Group Ningxia Coal Industry Co Ltd
Current assignee: National Energy Group Ningxia Coal Industry Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-11-25
Anticipated expiration: 2032-03-28

Abstract

The utility model provides a mine tunnel support, include: a bottom beam portion; the bracket part is connected with the bottom beam part; the bottom beam part Bao Kuohu comprises a beam and a connecting beam, wherein two ends of the connecting beam are connected to the inside of the arc-shaped beam, and a connecting line of the two ends of the arc-shaped beam is parallel to the axis of the connecting beam. The technical scheme of this application has solved the easy distortion of taking place of floorbar among the correlation technique effectively and then has leaded to the problem of steel support unstability.

Description

Mine tunnel support

Technical Field

The utility model relates to a mine tunnel supports technical field, particularly, relates to a mine tunnel support.

Background

The roadway needs to be supported by a steel bracket in the mine roadway so as to ensure that the stability of the roadway is better.

In the related art, for a roadway with a large pressure of a bottom plate, the bottom of a steel support is obviously bulged, so that the bottom beam of the steel support is distorted and deformed, and the steel support is unstable.

SUMMERY OF THE UTILITY MODEL

A primary object of the utility model is to provide a mine tunnel support to the floorbar of solving among the correlation technique takes place distortion easily and then leads to the problem of steel support unstability.

In order to achieve the above object, the utility model provides a mine tunnel support, include: a bottom beam portion; the bracket part is connected with the bottom beam part; wherein, the floorbar portion Bao Kuohu roof beam and tie-beam, the inside at the arched beam is all connected at the both ends of tie-beam, and the line of arched beam both ends is parallel with the axis of tie-beam.

Further, the mine roadway support further comprises a support beam, and the support beam is connected between the connecting beam and the arc-shaped beam.

Furthermore, the supporting beams are multiple and are arranged at intervals, and the distance between every two adjacent supporting beams is equal.

Further, the distance between two adjacent support beams is smaller than the distance between the top end of the outermost support beam and the end of the connecting beam.

Furthermore, the bottom beam part is positioned below the ground, two ends of the arc-shaped beam are flush with the ground, and the supporting beam is connected with two ends of the arc-shaped beam.

Further, a distance a between the bottom surface of the connecting beam and the lowest point of the arc-shaped beam and a distance b between a connecting line of two ends of the arc-shaped beam and the bottom surface of the connecting beam satisfy: a = b.

Further, the arc of the arc beam is between 1rad and 2 rad.

Further, the support part comprises a vertical section and an arc-shaped top connected with the vertical section, and the vertical section is connected between the arc-shaped top and the bottom beam part.

Further, the arc top includes first segmental arc and second segmental arc, and mine tunnel support still includes the connecting plate, and the connecting plate is connected between first segmental arc and second segmental arc.

Furthermore, the arc top further comprises a third arc section and a fourth arc section, the mine roadway support further comprises a first lap joint plate and a second lap joint plate, the first arc section and the third arc section are connected through the first lap joint plate, and the second arc section and the fourth arc section are connected through the second lap joint plate.

Use the technical scheme of the utility model, support portion and floorbar portion are connected, and support portion is located the top of floorbar portion, realizes the support to the mine tunnel jointly through support portion and floorbar portion. Specifically, the bottom beam portion Bao Kuohu is a beam and a connecting beam, two ends of the connecting beam are connected to the inside of the arc-shaped beam, the connecting beam is arranged, the strength of the arc-shaped beam can be effectively improved, the bending strength and the torsional strength of the arc-shaped beam are further better, and the axis of the connecting beam is parallel to the connecting line of the two ends of the arc-shaped beam, so that the bearing capacity of the arc-shaped beam is more uniform, the structural strength of the arc-shaped beam can be further improved, and the arc-shaped beam is prevented from being bent or twisted. Therefore, the technical scheme of the application effectively solves the problem that the bottom beam in the related technology is easy to distort and deform so as to cause instability of the steel support.

Drawings

The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 shows a schematic overall structural view of an embodiment of a mine roadway support according to the present invention;

fig. 2 shows a schematic structural view of a sill portion of the mine entry support of fig. 1.

Wherein the figures include the following reference numerals:

10. a bottom beam portion; 11. an arc beam; 12. a connecting beam; 20. a bracket part; 21. a vertical section; 22. an arc-shaped top; 221. a first arcuate segment; 222. a second arcuate segment; 223. a third arcuate segment; 224. a fourth arc segment; 30. a support beam; 40. a connecting plate; 51. a first strap; 52. a second strap.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and 2, in the present embodiment, the mine tunnel support includes: a sill portion 10 and a leg portion 20. The leg portion 20 is connected to the sill portion 10. The bottom beam part 10 comprises an arc beam 11 and a connecting beam 12, two ends of the connecting beam 12 are connected to the inside of the arc beam 11, and a connecting line of the two ends of the arc beam 11 is parallel to the axis of the connecting beam 12.

The technical scheme of this embodiment of application, support portion 20 and sill portion 10 are connected, and support portion 20 is located the top of sill portion 10, realizes the support to the mine tunnel through support portion 20 and sill portion 10 jointly. Specifically, the bottom beam portion 10 includes an arc beam 11 and a connection beam 12, two ends of the connection beam 12 are connected to the inside of the arc beam 11, and by providing the connection beam 12, the strength of the arc beam 11 can be effectively improved, so that the bending strength and the torsional strength of the arc beam 11 are better, and because the axis of the connection beam 12 is parallel to the line connecting the two ends of the arc beam 11, the bearing capacity of the arc beam 11 is more uniform, that is, the structural strength of the arc beam 11 can be further improved, and the arc beam 11 is prevented from being bent or twisted. Therefore, the technical scheme of the embodiment effectively solves the problem that the bottom beam in the related technology is easy to distort and deform, so that the steel support is unstable.

As shown in fig. 1 and 2, in the present embodiment, the mine tunnel support further includes a support beam 30, and the support beam 30 is connected between the connection beam 12 and the arc-shaped beam 11. The arrangement of the support beam 30 can increase the connection point of the connection beam 12 and the arc beam 11, i.e., can improve the structural strength of the overall structure, and is equivalent to dividing the arc beam 11 and the connection beam 12 into a plurality of sections, so that the plurality of sections have a small distance, and thus the bending resistance of each section of the connection beam 12 and each section of the arc beam 11 is better.

As shown in fig. 1 and 2, in the present embodiment, there are a plurality of support beams 30, and the support beams 30 are spaced apart from each other, and the distance between two adjacent support beams 30 is equal. The arrangement of the plurality of support beams 30 can further improve the structural strength of the arched beam 11 and the connecting beam 12, and the distance between two adjacent support beams 30 is equal, so that the strength of the connecting beam 12 and the arched beam 11 is better. Specifically, in the present embodiment, the number of the support beams 30 is 3, and the height of the middle support beam 30 is greater than the heights of the outer two support beams 30.

As shown in fig. 1 and 2, in the present embodiment, the distance between two adjacent support beams 30 is smaller than the distance between the top end of the outermost support beam 30 and the end of the connecting beam 12. Specifically, the support beam 30 includes a first beam, a second beam, and a third beam. The distance between the first beam and the end of the connecting beam 12 adjacent to the first beam is equal to the distance between the third beam and the end of the connecting beam 12 adjacent to the third beam. The distance between the first beam and the second beam is equal to the distance between the second beam and the third beam. Specifically, the distance between the first beam and the end of the connecting beam 12 adjacent to the first beam is greater than the distance between the first beam and the second beam. The area enclosed among the connecting beam 12, the first beam and the arc beam 11 is smaller than the area enclosed among the connecting beam, the first beam, the second beam and the arc beam 11. This arrangement can further ensure the strength of the connection, that is, can improve the structural strength of the entire sill 10.

As shown in fig. 1 and 2, in the present embodiment, the base beam portion 10 is located below the ground, both ends of the arc-shaped beam 11 are flush with the ground, and the support beam 30 is connected to both ends of the arc-shaped beam 11. The support to the mine roadway can be guaranteed through the arrangement.

As shown in fig. 1 and 2, in the present embodiment, a distance a between the bottom surface of the coupling beam 12 and the lowest point of the arc beam 11 and a distance b between a line connecting both ends of the arc beam 11 and the bottom surface of the coupling beam 12 satisfy: a = b. The arrangement described above enables the strength of the base beam portion 10 to be improved, and the force to be applied to the base beam portion to be more uniform.

In embodiments not shown in the figures, a is less than b.

As shown in fig. 1 and 2, in the present embodiment, the arc of the arched beam 11 is between 1rad and 2 rad. Specifically, the arc of the arc beam 11 is 1.5rad in this embodiment.

As shown in fig. 1 and 2, in the present embodiment, the bracket portion 20 includes a vertical section 21 and an arc-shaped top portion 22 connected to the vertical section 21, and the vertical section 21 is connected between the arc-shaped top portion 22 and the bottom beam portion 10. The arrangement can effectively support the side wall and the top wall of the mine roadway.

As shown in fig. 1 and 2, in this embodiment the curved roof 22 includes a first curved section 221 and a second curved section 222, and the mine entry support further includes a connection plate 40, the connection plate 40 being connected between the first curved section 221 and the second curved section 222. Foretell setting up makes mine tunnel support be convenient for transport more, because it is that the segment structure concatenation forms promptly, so not only make the transportation more convenient to it is also comparatively easy when the concatenation to make.

As shown in fig. 1 and 2, in this embodiment, the curved roof 22 further includes a third curved section 223 and a fourth curved section 224, the mine tunnel support further includes a first bridging plate 51 and a second bridging plate 52, the first curved section 221 and the third curved section 223 are connected by the first bridging plate 51, and the second curved section 222 and the fourth curved section 224 are connected by the second bridging plate 52. The effects of the above-described setting are the same as the above-described effects.

The strength of the base beam part 12 of the technical scheme of the embodiment is increased by 2-3 times compared with the strength of an ordinary base beam, and the extrusion deformation of a bottom drum to the steel support base beam is avoided. And then has played the effect of strong foundation, has stopped the tunnel secondary maintenance, has reduced the input of maintenance personal, has practiced thrift a large amount of steel support floorbars, materials such as concrete, has improved the stability and the security in tunnel, can practice thrift cost 43 ten thousand yuan per 1000 meters tunnel, can use widely under the condition that the underprop is great leads to the deformation of steel support floorbars, has higher economic benefits and social.

In the description of the present invention, it should be understood that the directions or positional relationships indicated by the directional terms such as "front, back, upper, lower, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the directions or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, and in the case of not making a contrary explanation, these directional terms do not indicate and imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore, should not be construed as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "above … …", "above … …", "above … … upper surface", "above", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms do not have special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A mine roadway support, comprising:

a sill portion (10);

a leg portion (20), the leg portion (20) being connected to the sill portion (10);

the bottom beam part (10) comprises an arc beam (11) and a connecting beam (12), two ends of the connecting beam (12) are connected to the inside of the arc beam (11), and a connecting line of the two ends of the arc beam (11) is parallel to the axis of the connecting beam (12);

the mine roadway support further comprises a support beam (30), and the support beam (30) is connected between the connecting beam (12) and the arc-shaped beam (11).

2. The mine roadway support of claim 1, wherein the support beams (30) are plural, the support beams (30) are spaced apart, and the distance between two adjacent support beams (30) is equal.

3. Mine tunnel support according to claim 1, characterized in that the distance between two adjacent support beams (30) is smaller than the distance between the top end of the outermost support beam (30) and the end of the connecting beam (12).

4. Mine roadway support according to claim 2, wherein the sill portion (10) is located below the ground, the two ends of the arched beam (11) are flush with the ground, and the support beam (30) is connected to the two ends of the arched beam (11).

5. Mine roadway support according to any one of claims 1 to 4, characterized in that the distance a between the bottom surface of the connecting beam (12) and the lowest point of the arc beam (11) and the distance b between the line connecting the two ends of the arc beam (11) and the bottom surface of the connecting beam (12) are such that: a = b.

6. Mine roadway support according to any one of claims 1 to 4, characterized in that the arc of the arc-shaped beam (11) is between 1 and 2 rad.

7. The mine roadway support of any one of claims 1 to 4, wherein the support portion (20) comprises a vertical section (21) and an arcuate roof portion (22) connected to the vertical section (21), the vertical section (21) being connected between the arcuate roof portion (22) and the sill portion (10).

8. The mine roadway support of claim 7, wherein the curved roof (22) comprises a first curved section (221) and a second curved section (222), the mine roadway support further comprising a connecting plate (40), the connecting plate (40) being connected between the first curved section (221) and the second curved section (222).

9. The mine roadway support of claim 8, wherein the curved roof (22) further comprises a third curved section (223) and a fourth curved section (224), the mine roadway support further comprising a first strap (51) and a second strap (52), the first curved section (221) and the third curved section (223) being connected by the first strap (51), the second curved section (222) and the fourth curved section (224) being connected by the second strap (52).