CN105275486A - Anchor pole and rope combined strutted structure and construction method thereof - Google Patents

Abstract

The invention discloses a bolt and anchor cable combined support structure and a construction method thereof, relates to the technical field of roadway support, and is invented for increasing the support area and improving the stability and reliability of the support structure. The anchor rod and anchor cable combination support structure, the support center plate, side walls are respectively fixedly connected to each side of the periphery of the support center plate, and each side wall is respectively fixedly connected to a support arm; A first anchor cable hole is opened in the center, a first gasket type tray is installed at the first anchor cable hole, a first anchor cable is installed in the first anchor cable hole, and one end of the first anchor cable is anchored in the roadway In the surrounding rock, the other end is fixed on the first pad-type pallet through a lock; bolt holes are opened on each support arm, and a second pad-type pallet is installed at the anchor rod holes. An anchor rod is installed in the anchor rod hole, one end of the anchor rod is anchored in the surrounding rock of the roadway, and the other end is fixed on the second gasket type pallet by a fastener. The invention is suitable for the support of roadway surrounding rock.

Description

A bolt-and-cable combined support structure and construction method thereof

technical field

The invention relates to the technical field of roadway support, in particular to an anchor rod and anchor cable combined support structure and a construction method thereof.

Background technique

At present, the types of anchor bolts and cables in my country are relatively single, and there are few combined components and combinations. The failure of a single anchor bolt and anchor cable is serious, and there are many roof fall and roof accidents caused by this; the traditional steel joist is directly arranged on the surface of the roadway. , due to the small protective surface area, it is not conducive to the prestressed diffusion of anchor rods and anchor cables, and the effect is poor; channel steel is more and more widely used in coal mine support, and when the surrounding rock of the roadway undergoes large deformation, due to its insufficient stiffness and strength, It is easy to be bent and fail. Therefore, the research and development of new composite components to form a strong composite support structure is the key to ensure the stability of the roadway surrounding rock under complex conditions such as large spans, high sides, and unstable roofs.

Contents of the invention

In view of this, an embodiment of the present invention provides a bolt-and-cable combined support structure, which can increase the support area and improve the stability and reliability of the support structure.

In order to achieve the above object, embodiments of the present invention adopt the following technical solutions:

On the one hand, an embodiment of the present invention provides a bolt-and-cable combined support structure, including:

Supporting the central plate, the periphery of the supporting central plate is polygonal;

Side walls are fixedly connected to each side of the periphery of the support center plate, and each side wall extends towards the same direction and forms a groove between them;

The side walls are respectively fixedly connected with support arms; each support arm is a channel steel structure, the notch of each support arm faces the same direction, and the outer side of the groove bottom of each support arm and one side of the support center plate on the same face;

A first anchor cable hole is opened in the center of the support center plate, a first gasket type tray is installed at the first anchor cable hole, and a first anchor cable is installed in the first anchor cable hole , one end of the first anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the first gasket type pallet through a lock;

An anchor hole is opened on each support arm, and a second gasket type tray is installed at the anchor hole, and an anchor is installed in the anchor hole, and one end of the anchor is anchored to the roadway surrounding rock Inside, the other end is fixed on the second gasket type pallet by a fastener.

Optionally, on the outside of each side wall connected to the periphery of the supporting center plate, a first supporting plate and a second supporting plate are respectively welded on both sides of the supporting arm;

Both the first pallet and the second pallet include a first side wall and a second side wall, and the first side wall and the second side wall are vertically connected;

The inner surface of the first side wall of the first pallet abuts against the outer surface of one side wall of the support arm, and the inner surface of the second side wall of the first pallet abuts against a groove of the notch of the support arm. lean against each other;

The inner surface of the first side wall of the second pallet abuts against the outer surface of the other side wall of the support arm, and the inner surface of the second side wall of the second pallet is in contact with the other side of the notch of the support arm. A slot edge abuts against each other.

Optionally, a first rib is welded at the middle position of the inner side of each side wall connected to the periphery of the supporting center plate, and a first connection through hole is opened on both sides of the first rib;

Each support arm is welded with an end plate connected to the side wall connected to the periphery of the support center plate, and the end plate is attached to the outer surface of the side wall connected to the periphery of the support center plate. The middle position of the end plate is welded with a second rib, and a second connection through hole is opened on both sides of the second rib;

The first rib corresponds to the second rib, and the first connection through hole corresponds to the second connection through hole;

The bolt-and-cable combined support structure also includes a first connecting piece, the first connecting piece includes a first connecting wall, and a second connecting wall and a third connecting wall are fixedly connected on both sides of the first connecting wall, The second connecting wall and the third connecting wall are parallel to each other;

A first notch is opened on the second connecting wall, and a third connecting hole is opened on both sides of the first notch on the second connecting wall; a second notch is opened on the third connecting wall, and a second notch is opened on the third connecting wall. A fourth connection hole is opened on the wall on both sides of the second notch;

The first connecting piece is clamped on the side wall connected to the peripheral edge of the supporting central plate and the end plate of the supporting arm; wherein, the first connecting wall of the first connecting piece is connected to the supporting central plate The end surface of the side wall connected to the periphery is fitted to the end surface of the end plate of the support arm, the second connection wall is fitted to the inner surface of the side wall connected to the periphery of the supporting center plate, and the third connection wall is fitted to the inner surface of the side wall connected to the periphery of the support center plate. The inner surface of the end plate of the support arm is fitted together, the first rib plate is clamped in the first notch opened on the second connecting wall, and the second rib plate is clamped in the opening opened on the third connecting wall. in the second notch;

The first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole correspond to each other, and bolts are pierced in the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole, Fastening nuts are installed on the bolts, and the support arm is fixed on the supporting center plate through the first connecting piece, the bolts and the fastening nuts.

Optionally, a wedge-shaped protrusion is provided at the bottom of the groove at the end of at least one support arm away from the support center plate, and a second anchor cable hole is opened on the wedge-shaped protrusion, and a second anchor cable hole is opened in the second anchor cable hole. A third gasket-type tray is installed at the place, and a second anchor cable is installed in the second anchor cable hole. One end of the second anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed to the third pad by a lock. on a sheet tray.

Optionally, the groove bottom of the support arm is welded with two mutually parallel steel bars, and the second pad type tray is arranged on the two mutually parallel steel bars; adjacent support arms are also connected with Support beam.

On the other hand, an embodiment of the present invention provides a construction method for a bolt-and-cable combined support structure, including:

Place the support center plate in the middle of the roadway roof or side, adjust the specified direction, drill the first anchor cable on the roadway roof or side, install the first anchor cable to connect the support center plate and the roadway roof or side Department is fixed;

A support arm is fixedly connected with the support center plate, a bolt is drilled on the roadway roof or the side, and an anchor is installed to fix the support arm and the roadway roof or side;

Fixing the other support arm with the support center plate, drilling the anchor rod on the roadway roof or the side, installing the anchor rod to fix the other support arm and the roadway roof or the side;

Repeat the above steps to fix each support arm with the roof or side of the roadway;

Wherein, the periphery of the support center plate is polygonal; side walls are fixedly connected to each side of the periphery of the support center plate, and each side wall extends towards the same direction and forms a groove between each other;

The side walls are respectively fixedly connected to the support arms; each support arm is a channel steel structure, the notch of each support arm faces the same direction, and the outer surface of the groove bottom of each support arm and one of the support center plates the sides are on the same plane;

A first anchor cable hole is opened in the center of the support center plate, a first gasket type tray is installed at the first anchor cable hole, and the first anchor cable is installed in the first anchor cable hole , one end of the first anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the first gasket type pallet through a lock;

An anchor hole is opened on each support arm, and a second gasket type tray is installed at the anchor hole, and an anchor is installed in the anchor hole, and one end of the anchor is anchored to the roadway surrounding rock Inside, the other end is fixed on the second gasket type pallet by a fastener.

Optionally, said fixing a support arm to said support center plate includes:

On the outside of each side wall connected to the periphery of the supporting center plate, a first supporting plate and a second supporting plate are respectively welded on both sides of the supporting arm; the first supporting plate and the second supporting plate both include the first supporting plate One side wall and the second side wall, the first side wall and the second side wall are vertically connected;

The inner surface of the first side wall of the first pallet abuts against the outer surface of one side wall of the support arm, and the inner surface of the second side wall of the first pallet abuts against a groove of the notch of the support arm. lean against each other;

The inner surface of the first side wall of the second pallet abuts against the outer surface of the other side wall of the support arm, and the inner surface of the second side wall of the second pallet is in contact with the other side of the notch of the support arm. A slot edge abuts against each other.

Optionally, said fixing a support arm to said support center plate further includes:

Weld the first rib plate at the middle position of the inner side of each side wall connected to the peripheral edge of the support center plate, and open the first connecting through hole on both sides of the first rib plate;

The ends of each support arm connected to the side wall connected to the periphery of the support center plate are welded to the end plate, and the end plate is attached to the outer surface of the side wall connected to the periphery of the support center plate. The middle position of the end plate is welded with a second rib, and a second connection through hole is opened on both sides of the second rib;

The first rib corresponds to the second rib, and the first connection through hole corresponds to the second connection through hole;

clamping the first connecting piece on the side wall connected by the peripheral edge of the support center plate and the end plate of the support arm; wherein

The first connecting member includes a first connecting wall, a second connecting wall and a third connecting wall are fixedly connected on both sides of the first connecting wall, and the second connecting wall and the third connecting wall are parallel to each other; A first notch is opened on the top, and a third connecting hole is opened on both sides of the first notch on the second connecting wall; a second notch is opened on the third connecting wall, and a second notch is located on the third connecting wall. A fourth connection hole is provided on both sides of the notch;

The first connecting wall of the first connecting piece fits with the end surface of the side wall connected to the periphery of the supporting center plate and the end surface of the end plate of the supporting arm, and the second connecting wall is in contact with the supporting center The inner surface of the side wall connected to the periphery of the plate is attached, the third connecting wall is attached to the inner surface of the end plate of the support arm, and the first rib plate is stuck on the first rib set on the second connecting wall. In the notch, the second rib plate is stuck in the second notch opened on the third connecting wall;

The first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole correspond to each other, and bolts are pierced in the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole, Fastening nuts are installed on the bolts, and the support arm is fixed on the supporting center plate through the first connecting piece, the bolts and the fastening nuts.

Optionally, the construction method of the described anchor rod and anchor cable combined support structure also includes:

A wedge-shaped projection is set at the bottom of the groove at least one support arm away from the end of the support center plate, a second anchor cable hole is opened on the wedge-shaped projection, and a third gasket is installed at the second anchor cable hole. A second anchor cable is installed in the second anchor cable hole, one end of the second anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the third gasket type tray through a lock.

Optionally, the construction method of the described anchor rod and anchor cable combined support structure also includes:

Two parallel steel bars are welded at the bottom of the support arm, and the second spacer tray is arranged on the two parallel steel bars.

Compared with the prior art, the bolt-and-cable combined support structure and construction method provided by the embodiments of the present invention adopt a support center plate with a polygonal periphery to fix and connect a plurality of support arms; The center of the protective center plate is provided with a first anchor cable hole, a first gasket type tray is installed at the first anchor cable hole, a first anchor cable is installed in the first anchor cable hole, and the first anchor cable hole is installed in the first anchor cable hole. One end of an anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the first gasket type pallet through a lock; each support arm is provided with an anchor hole, and a second anchor hole is installed at the anchor hole. Gasket type pallet, anchor rod is installed in described anchor rod hole, one end of described bolt rod is anchored in the roadway surrounding rock, and the other end is fixed on the described second gasket type pallet by fastener, like this, Through the support center plate, each support arm, the first anchor cables installed on the support center plate and the anchor rods installed on each support arm, a three-dimensional combined support structure is formed, which can increase the support The protection area is improved, and the stability of the support is improved, especially suitable for the support of the surrounding rock of the long-span or high-side roadway.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the schematic bottom view of an embodiment of the anchor rod and anchor cable combined support structure of the present invention;

Fig. 2 is a partially enlarged schematic diagram of Fig. 1;

Fig. 3 is the three-dimensional structure schematic diagram of an embodiment of the anchor rod and anchor cable combined support structure of the present invention;

Fig. 4 is the partially enlarged schematic view of the three-dimensional structure of an embodiment of the anchor rod and anchor cable combined support structure of the present invention;

Fig. 5 is a schematic diagram of the three-dimensional structure of the first connector 5 in Fig. 2;

Fig. 6 is a schematic cross-sectional structure diagram of the support arm 2 in Fig. 1;

7 is a schematic bottom view of another embodiment of the bolt-and-cable combined support structure of the present invention;

Fig. 8 is a schematic bottom view of another embodiment of the bolt-and-cable combined support structure of the present invention.

detailed description

A bolt-and-cable combined support structure and its construction method according to an embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Fig. 1 is a structural schematic diagram of an embodiment of the anchor rod and anchor cable combined support structure of the present invention.

Referring to Fig. 1 to Fig. 4, the embodiment of the anchor rod and anchor cable combined support structure of the present invention includes: a support center plate 1, the periphery of the support center plate is polygonal; The sides are respectively fixedly connected with side walls 11, and each side wall extends towards the same direction and forms a groove between each other; said each side wall 11 is respectively fixedly connected with support arms 2; each support arm 2 is a channel steel structure, each The notches of the support arms 2 face the same direction, and the outer side of the groove bottom of each support arm 2 is on the same surface as one side of the support center plate 1; The first anchor cable hole, the first gasket type tray 12 is installed at the first anchor cable hole, the first anchor cable 13 is installed in the first anchor cable hole, the first anchor cable 13 One end is anchored in the surrounding rock of the roadway, and the other end is fixed on the first gasket type tray 12 by a lock;

An anchor hole is provided on each support arm 2, and a second gasket type tray 21 is installed at the anchor hole, and an anchor 22 is installed in the anchor hole, and one end of the anchor 22 is anchored In the surrounding rock of the roadway, the other end is fixed on the second gasket type pallet 21 by fasteners.

The bolt-and-cable combined support structure provided by the embodiment of the present invention adopts a support center plate with a polygonal periphery, and a plurality of support arms are fixedly connected together; a first anchor cable is provided in the center of the support center plate hole, a first gasket type tray is installed at the first anchor cable hole, a first anchor cable is installed in the first anchor cable hole, and one end of the first anchor cable is anchored in the roadway surrounding rock , the other end is fixed on the first gasket type pallet by a lock; anchor holes are provided on each support arm, and a second gasket type tray is installed at the anchor hole, and a second gasket type tray is installed in the anchor hole An anchor rod is installed in the center, one end of the anchor rod is anchored in the surrounding rock of the roadway, and the other end is fixed on the second gasket type pallet by a fastener, so that through the support center plate, each support arm 1. The first anchor cable installed on the support center plate and the anchor rods installed on each support arm form a three-dimensional combined support structure, which can increase the support area and improve the stability and stability of the support structure. Reliability, especially suitable for supporting the surrounding rock of long-span or high-side roadways.

In one embodiment, there may be two holes on each support arm, the one close to the center plate is an anchor rod hole, and the one far away from the center plate is an anchor cable hole. The holes on each support arm can also be all bolt holes, or bolt holes plus anchor cable holes, which are mainly adjusted according to the properties of the surrounding rock of the roadway to maximize the effectiveness of the support structure.

Referring to Figure 2 and Figure 4, in order to enhance the strength of the connection between the support center plate and the support arm and the stability of the positioning between the two, in the aforementioned embodiment of the combined support structure of the anchor rod and cable, in the support The outside of each side wall connected by the periphery of the center plate 1 is respectively welded with a first supporting plate 3 and a second supporting plate 4 on both sides of the support arm; the first supporting plate 3 and the second supporting plate 4 include The first side wall and the second side wall, the first side wall and the second side wall are vertically connected; the inner surface of the first side wall of the first pallet 3 is in contact with the outer surface of a side wall of the support arm 2 , the inner surface of the second side wall of the first pallet 3 abuts against a groove edge 23 of the notch of the support arm; the inner surface of the first side wall of the second pallet 4 is in contact with the support arm 2 The outer surface of the other side wall of the second pallet 4 is in close contact with the other edge 24 of the notch of the support arm.

In order to further enhance the strength of the connection between the support center plate and the support arm and the stability of the positioning between the two, referring to Fig. 2 and Fig. A first rib plate 14 is welded at the middle position of the inner side of each side wall connected by the periphery of the center guard plate 1, and a first connecting through hole (not shown) is provided on both sides of the first rib plate 14; The end of the support arm 2 connected to the side wall connected to the periphery of the support center plate is welded with an end plate 25, and the end plate 25 is connected to the outer surface of the side wall 11 connected to the periphery of the support center plate 1. Fitting, a second rib plate 26 is welded at the middle position of the end plate 25, and a second connection through hole (not shown) is provided on both sides of the second rib plate 26; the first rib plate 14 and The second rib plate 26 corresponds, and the first connecting through hole corresponds to the second connecting through hole; referring to FIG. A connector 5 includes a first connecting wall 51, a second connecting wall 52 and a third connecting wall 53 are fixedly connected on both sides of the first connecting wall 51, and the second connecting wall 52 and the third connecting wall 53 are parallel to each other; Offer the first notch 521 on the second connecting wall 52, be positioned at the first notch 521 both sides on the second connecting wall 52 and offer the 3rd connecting hole (not shown in the figure); On the 3rd connecting wall 53 A second notch (not shown) is provided, and a fourth connection hole (not shown) is provided on both sides of the second notch on the third connecting wall 53; referring to Fig. 2 and Fig. 4, the The first connecting piece 5 is stuck on the side wall 11 connected to the peripheral edge of the support center plate and the end plate 25 of the support arm 2; wherein, the first connecting wall 51 of the first connecting piece 5 is connected to the The end surface of the side wall 11 connected to the periphery of the support center plate 1 is in contact with the end surface of the end plate 25 of the support arm 2, and the second connecting wall 52 is connected to the side wall connected to the periphery of the support center plate 1. 11, the third connecting wall 53 is in contact with the inner surface of the end plate 25 of the support arm 2, and the first rib 14 is stuck in the first groove opened on the second connecting wall 52. In the opening 521, the second rib plate 26 is stuck in the second notch provided on the third connecting wall 53; the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole correspond to each other. , Bolts 6 are pierced in the first connection hole, the second connection hole, the third connection hole and the fourth connection hole, and fastening nuts 7 are installed on the bolts 6, through the first connection piece 5, Bolts 6 and fastening nuts 7 fix the support arm on the support center plate.

Wherein, the first rib 14 is clamped in the first notch 521 provided on the second connecting wall 52, the second rib 26 is clamped in the second notch provided on the third connecting wall 53, through the The first rib 14 and the second rib 26 can not only strengthen the connection between the support center plate 1 and the support arm 2 , but also play a positioning role for the clamping of the first connecting member 5 .

Referring to Fig. 6, in order to improve the effect of the support structure and strengthen the mechanical properties of the low rock mass, a wedge-shaped protrusion 27 can be provided at the bottom of the groove at least one support arm 2 away from the end of the support center plate 1. A second anchor cable hole is provided on the wedge-shaped protrusion 27, a third gasket type tray 28 is installed at the second anchor cable hole, and a second anchor cable 29 is installed in the second anchor cable hole, One end of the second anchor cable 29 is anchored in the surrounding rock of the roadway, and the other end is fixed on the third gasket type pallet 28 by a lock. In this way, the anchor cable can be anchored in the compressed rock mass in the deep part of the shoulder or bottom corner of the roadway, the effect of the supporting structure can be improved, and the mechanical properties of the low-position rock mass can be strengthened.

Referring to Fig. 4, in order to enhance the rigidity of the anchor rod and anchor cable combined support structure and facilitate the fixing of the anchor rod on the support arm, the groove bottom of the support arm is welded with two mutually parallel steel bars 9, and the second gasket The type tray 21 is arranged on the two mutually parallel steel bars 9 .

Referring to FIG. 7 and FIG. 8 , in another embodiment, a support beam 10 is connected between adjacent support arms. A plurality of crossbeams 10 can form a circle or a polygon, and anchor rods or anchor cables can also be installed on each crossbeam 10 .

Embodiments of the present invention also provide a construction method for a bolt-and-cable combined support structure, comprising the following steps:

Place the support center plate in the middle of the roadway roof or side, adjust the specified direction, drill the first anchor cable on the roadway roof or side, install the first anchor cable to connect the support center plate and the roadway roof or side Department is fixed;

A support arm is fixedly connected with the support center plate, a bolt is drilled on the roadway roof or the side, and an anchor is installed to fix the support arm and the roadway roof or side;

Fixing the other support arm with the support center plate, drilling the anchor rod on the roadway roof or the side, installing the anchor rod to fix the other support arm and the roadway roof or the side;

Repeat the above steps to fix each support arm with the roof or side of the roadway;

Wherein, the periphery of the support center plate is polygonal; side walls are fixedly connected to each side of the periphery of the support center plate, and each side wall extends towards the same direction and forms a groove between each other; the Each side wall is fixedly connected to the support arm respectively; each support arm is a channel steel structure, the notches of each support arm face the same direction, and the outer surface of the groove bottom of each support arm and one side of the support center plate are in the On the same surface; a first anchor cable hole is opened in the center of the support center plate, and a first gasket type tray is installed at the first anchor cable hole, and the first anchor cable hole is installed in the first anchor cable hole. The first anchor cable, one end of the first anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the first gasket type pallet through a lock; each support arm is provided with a bolt hole, and the A second gasket-type tray is installed at the anchor hole, and an anchor is installed in the anchor hole. One end of the anchor is anchored in the surrounding rock of the roadway, and the other end is fixed to the first anchor by a fastener. Two spacers on the tray.

The construction method of the anchor rod and anchor cable combined support structure provided by the embodiment of the present invention adopts a support center plate with a polygonal periphery to fix and connect a plurality of support arms together; in the center of the support center plate, a second An anchor cable hole, a first gasket type tray is installed at the first anchor cable hole, a first anchor cable is installed in the first anchor cable hole, and one end of the first anchor cable is anchored in the roadway In the surrounding rock, the other end is fixed on the first pad-type pallet through a lock; bolt holes are opened on each support arm, and a second pad-type pallet is installed at the bolt holes, and the An anchor rod is installed in the anchor rod hole, one end of the anchor rod is anchored in the roadway surrounding rock, and the other end is fixed on the second gasket type pallet by a fastener, so that through the support center plate, Each support arm, the first anchor cable installed on the support center plate and the anchor rod installed on each support arm form a three-dimensional combined support structure, which can increase the support area and improve the stability of the support It is especially suitable for large-span surrounding rock support.

In the aforementioned embodiment of the construction method of the bolt-and-anchor combined support structure, optionally, the fixed connection of a support arm to the support center plate includes: The outer side of a side wall, the first supporting plate and the second supporting plate are respectively welded on both sides of the support arm; the first supporting plate and the second supporting plate both include the first side wall and the second side wall, the first side The wall and the second side wall are vertically connected; the inner surface of the first side wall of the first supporting plate is attached to the outer surface of one side wall of the support arm, and the inner surface of the second side wall of the first supporting plate is in contact with the outer surface of the supporting arm. One slot edge of the notch of the support arm abuts against each other; the inner surface of the first side wall of the second pallet abuts against the outer surface of the other side wall of the support arm, and the second side of the second pallet The inner side of the wall abuts against the other edge of the notch of the support arm.

In the aforementioned embodiment of the construction method of the bolt-and-cable combined support structure, optionally, the fixed connection of a support arm to the support center plate further includes: The first rib is welded at the middle position of the inner side of each side wall, and a first connection through hole is opened on both sides of the first rib;

The ends of each support arm connected to the side wall connected to the periphery of the support center plate are welded to the end plate, and the end plate is attached to the outer surface of the side wall connected to the periphery of the support center plate. The middle position of the end plate is welded with the second rib plate, and a second connecting through hole is opened on both sides of the second rib plate; the first rib plate corresponds to the second rib plate, and the first connecting through hole and the second connecting through hole Correspondingly; clamp the first connecting piece on the side wall connected to the periphery of the support center plate and the end plate of the support arm; wherein, the first connecting piece includes a first connecting wall, and the first connecting piece The two sides of the wall are fixedly connected with a second connecting wall and a third connecting wall, and the second connecting wall and the third connecting wall are parallel to each other; A third connection hole is provided on both sides of a notch; a second notch is provided on the third connection wall, and a fourth connection hole is provided on both sides of the second notch on the third connection wall; the first connection The first connecting wall of the piece fits the end surface of the side wall connected to the periphery of the support center plate and the end surface of the end plate of the support arm, and the second connection wall is connected to the periphery of the support center plate. The inner surface of the side wall is attached, the third connecting wall is attached to the inner surface of the end plate of the support arm, the first rib is stuck in the first notch opened on the second connecting wall, the In the second notch provided on the third connecting wall of the second rib card; the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole are corresponding, in the first connecting hole, the second connecting hole Bolts are perforated in the second connecting hole, the third connecting hole and the fourth connecting hole, and fastening nuts are installed on the bolts, and the support arm is fixed on the first connecting piece, the bolts and the fastening nuts The support center plate.

In the aforementioned embodiment of the construction method of the bolt-and-anchor combined support structure, the construction method of the described bolt-and-anchor combined support structure may further include: A wedge-shaped protrusion is provided at the bottom of the groove, and a second anchor cable hole is opened on the wedge-shaped protrusion. A third gasket type tray is installed at the second anchor cable hole, and a second anchor cable hole is installed in the second anchor cable hole. Two anchor cables, one end of the second anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the third gasket type pallet through a lock. In this way, the anchor cable can be anchored in the compressed rock mass in the deep part of the shoulder or bottom corner of the roadway, the effect of the supporting structure can be improved, and the mechanical properties of the low-position rock mass can be strengthened.

In the aforementioned embodiment of the construction method of the bolt-and-cable combination support structure, the construction method of the described bolt-and-anchor combination support structure may further include: welding two mutually parallel steel bars at the groove bottom of the support arm, The second gasket-type pallet is arranged on the two parallel steel bars.

For the construction method of the bolt-and-anchor-cable combined support structure provided in the embodiments of the present invention, for the bolt-and-anchor-cable combined support structure in the embodiment, reference may be made to the related descriptions of the above-mentioned examples of the bolt-and-anchor combined support structure.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims (10)

1. A bolt and anchor cable combined support structure is characterized in that, comprising: Supporting the central plate, the periphery of the supporting central plate is polygonal; Side walls are fixedly connected to each side of the periphery of the support center plate, and each side wall extends towards the same direction and forms a groove between them; The side walls are respectively fixedly connected with support arms; each support arm is a channel steel structure, the notch of each support arm faces the same direction, and the outer side of the groove bottom of each support arm and one side of the support center plate on the same face; A first anchor cable hole is opened in the center of the support center plate, a first gasket type tray is installed at the first anchor cable hole, and a first anchor cable is installed in the first anchor cable hole , one end of the first anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the first gasket type pallet through a lock; An anchor hole is opened on each support arm, and a second gasket type tray is installed at the anchor hole, and an anchor is installed in the anchor hole, and one end of the anchor is anchored to the roadway surrounding rock Inside, the other end is fixed on the second gasket type pallet by a fastener. 2. The anchor rod and anchor cable combined support structure according to claim 1, characterized in that, On the outside of each side wall connected to the periphery of the support center plate, a first supporting plate and a second supporting plate are respectively welded on both sides of the supporting arm; Both the first pallet and the second pallet include a first side wall and a second side wall, and the first side wall and the second side wall are vertically connected; The inner surface of the first side wall of the first pallet abuts against the outer surface of one side wall of the support arm, and the inner surface of the second side wall of the first pallet abuts against a groove of the notch of the support arm. lean against each other; The inner surface of the first side wall of the second pallet abuts against the outer surface of the other side wall of the support arm, and the inner surface of the second side wall of the second pallet is in contact with the other side of the notch of the support arm. A slot edge abuts against each other. 3. The bolt-and-cable combined support structure according to claim 1 or 2, characterized in that a first rib is welded at the middle position of the inner side of each side wall connected to the periphery of the support center plate , a first connection through hole is opened on both sides of the first rib; Each support arm is welded with an end plate connected to the side wall connected to the periphery of the support center plate, and the end plate is attached to the outer surface of the side wall connected to the periphery of the support center plate. The middle position of the end plate is welded with a second rib, and a second connection through hole is opened on both sides of the second rib; The first rib corresponds to the second rib, and the first connection through hole corresponds to the second connection through hole; The bolt-and-cable combined support structure also includes a first connecting piece, the first connecting piece includes a first connecting wall, and a second connecting wall and a third connecting wall are fixedly connected on both sides of the first connecting wall, The second connecting wall and the third connecting wall are parallel to each other; A first notch is opened on the second connecting wall, and a third connecting hole is opened on both sides of the first notch on the second connecting wall; a second notch is opened on the third connecting wall, and a second notch is opened on the third connecting wall. A fourth connection hole is opened on the wall on both sides of the second notch; The first connecting piece is clamped on the side wall connected to the peripheral edge of the supporting central plate and the end plate of the supporting arm; wherein, the first connecting wall of the first connecting piece is connected to the supporting central plate The end surface of the side wall connected to the periphery is fitted to the end surface of the end plate of the support arm, the second connection wall is fitted to the inner surface of the side wall connected to the periphery of the supporting center plate, and the third connection wall is fitted to the inner surface of the side wall connected to the periphery of the support center plate. The inner surface of the end plate of the support arm is fitted together, the first rib plate is clamped in the first notch opened on the second connecting wall, and the second rib plate is clamped in the opening opened on the third connecting wall. in the second notch; The first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole correspond to each other, and bolts are pierced in the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole, Fastening nuts are installed on the bolts, and the support arm is fixed on the supporting center plate through the first connecting piece, the bolts and the fastening nuts. 4. The bolt-and-anchor combined support structure according to any one of claims 1 to 3, wherein a wedge-shaped protrusion is provided at the bottom of the groove at least one support arm away from the end of the support center plate, A second anchor cable hole is opened on the wedge-shaped protrusion, a third gasket type tray is installed at the second anchor cable hole, and a second anchor cable is installed in the second anchor cable hole, so One end of the second anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the third gasket type pallet by a lock. 5. The bolt-and-cable combination support structure according to any one of claims 1 to 4, wherein two mutually parallel steel bars are welded to the bottom of the groove of the support arm, and the second gasket type The tray is set on the two parallel steel bars; Support beams are also connected between adjacent support arms. 6. A construction method for an anchor rod and anchor cable combined support structure, characterized in that it comprises: Place the support center plate in the middle of the roadway roof or side, adjust the specified direction, drill the first anchor cable on the roadway roof or side, install the first anchor cable to connect the support center plate and the roadway roof or side Department is fixed; A support arm is fixedly connected with the support center plate, a bolt is drilled on the roadway roof or the side, and an anchor is installed to fix the support arm and the roadway roof or side; Fixing the other support arm with the support center plate, drilling the anchor rod on the roadway roof or the side, installing the anchor rod to fix the other support arm and the roadway roof or the side; Repeat the above steps to fix each support arm with the roof or side of the roadway; Wherein, the periphery of the support center plate is polygonal; side walls are fixedly connected to each side of the periphery of the support center plate, and each side wall extends towards the same direction and forms a groove between each other; The side walls are respectively fixedly connected to the support arms; each support arm is a channel steel structure, the notch of each support arm faces the same direction, and the outer surface of the groove bottom of each support arm and one of the support center plates the sides are on the same plane; A first anchor cable hole is opened in the center of the support center plate, a first gasket type tray is installed at the first anchor cable hole, and the first anchor cable is installed in the first anchor cable hole , one end of the first anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the first gasket type pallet through a lock; An anchor hole is opened on each support arm, and a second gasket type tray is installed at the anchor hole, and an anchor is installed in the anchor hole, and one end of the anchor is anchored to the roadway surrounding rock Inside, the other end is fixed on the second gasket type pallet by a fastener. 7. The construction method of the bolt-and-cable combined support structure according to claim 6, wherein said fixing a support arm to said support center plate comprises: On the outside of each side wall connected to the periphery of the supporting center plate, a first supporting plate and a second supporting plate are respectively welded on both sides of the supporting arm; the first supporting plate and the second supporting plate both include the first supporting plate One side wall and the second side wall, the first side wall and the second side wall are vertically connected; The inner surface of the first side wall of the first pallet abuts against the outer surface of one side wall of the support arm, and the inner surface of the second side wall of the first pallet abuts against a groove of the notch of the support arm. lean against each other; The inner surface of the first side wall of the second pallet abuts against the outer surface of the other side wall of the support arm, and the inner surface of the second side wall of the second pallet is in contact with the other side of the notch of the support arm. A slot edge abuts against each other. 8. The construction method of the anchor rod and anchor cable combined support structure according to claim 7, wherein, Said fixing a support arm to said supporting center plate also includes: Weld the first rib plate at the middle position of the inner side of each side wall connected to the peripheral edge of the support center plate, and open the first connecting through hole on both sides of the first rib plate; The ends of each support arm connected to the side wall connected to the periphery of the support center plate are welded to the end plate, and the end plate is attached to the outer surface of the side wall connected to the periphery of the support center plate. The middle position of the end plate is welded with a second rib, and a second connection through hole is opened on both sides of the second rib; The first rib corresponds to the second rib, and the first connection through hole corresponds to the second connection through hole; clamping the first connecting piece on the side wall connected by the peripheral edge of the support center plate and the end plate of the support arm; wherein The first connecting member includes a first connecting wall, a second connecting wall and a third connecting wall are fixedly connected on both sides of the first connecting wall, and the second connecting wall and the third connecting wall are parallel to each other; A first notch is opened on the top, and a third connecting hole is opened on both sides of the first notch on the second connecting wall; a second notch is opened on the third connecting wall, and a second notch is located on the third connecting wall. A fourth connecting hole is opened on both sides of the notch; The first connecting wall of the first connecting piece fits with the end surface of the side wall connected to the periphery of the supporting center plate and the end surface of the end plate of the supporting arm, and the second connecting wall is in contact with the supporting center The inner surface of the side wall connected to the periphery of the plate is attached, the third connecting wall is attached to the inner surface of the end plate of the support arm, and the first rib plate is stuck on the first rib set on the second connecting wall. In the notch, the second rib plate is stuck in the second notch opened on the third connecting wall; The first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole correspond to each other, and bolts are pierced in the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole, Fastening nuts are installed on the bolts, and the support arm is fixed on the supporting center plate through the first connecting piece, the bolts and the fastening nuts. 9. The construction method of the anchor rod and anchor cable combined support structure according to claim 6, further comprising: A wedge-shaped projection is set at the bottom of the groove at least one support arm away from the end of the support center plate, a second anchor cable hole is opened on the wedge-shaped projection, and a third gasket is installed at the second anchor cable hole. A second anchor cable is installed in the second anchor cable hole, one end of the second anchor cable is anchored in the surrounding rock of the roadway, and the other end is fixed on the third gasket type tray through a lock. 10. The construction method of the anchor rod and anchor cable combined support structure according to claim 6, further comprising: Two parallel steel bars are welded at the bottom of the support arm, and the second spacer tray is arranged on the two parallel steel bars.