A support for rectangular roadway in underground mine

Abstract

The utility model relates to roadway support equipment technical field, concretely discloses a kind of support for underground rectangular roadway, including the '' P '' shape frame, the vertical edge and horizontal edge of '' P '' shape frame are detachably connected by connecting piece, connecting piece includes first connecting piece and second connecting piece, first connecting piece is arranged on the vertical edge upper end of '' P '' shape frame, the both ends of second connecting piece are hinged with the horizontal edge middle part and vertical edge upper part of '' P '' shape frame, and the vertical edge lower part of '' P '' shape frame is detachably connected with foot leg supporting member.The support can increase the contact area with rectangular roadway, solve the high consumption of rectangular roadway support material, serious waste;Installation step is complex, frequent fire operation, there is the security risk problem of fire.

Description

Technical Field

[0001] This utility model relates to the technical field of tunnel support equipment, specifically a support for underground rectangular tunnels. Background Technology

[0002] Previously, rectangular roadways were supported by arched steel frames, with timber longer than the distance between two sets of steel arches used to fill the two arch corners. However, this method has been phased out because timber support is prohibited in underground mines. Currently, when rectangular roadways are supported by arched steel frames, the two arch corners are often partially wrapped with a single layer of mesh before shotcrete support, wasting a significant amount of materials and causing a sharp increase in mine support costs. Existing rectangular roadway supports also use simple I-beams, with one crossbeam and two columns cut and welded on-site to form a "gate"-shaped support, involving numerous construction steps and frequent hot work underground. Utility Model Content

[0003] The purpose of this utility model is to provide a support for underground rectangular roadways, in order to solve the problems of high consumption and serious waste of support materials for rectangular roadways; complex installation steps; frequent hot work operations; and fire safety hazards.

[0004] The objective of this utility model can be achieved through the following technical solutions: A support for a rectangular underground tunnel includes a "П"-shaped frame. The vertical and horizontal sides of the "П"-shaped frame are detachably connected by connectors. The connectors include a first connector and a second connector. The first connector is disposed at the upper end of the vertical side of the "П"-shaped frame. The two ends of the second connector are hinged to the middle of the horizontal side and the upper part of the vertical side of the "П"-shaped frame. Leg supports are detachably connected to the lower part of the vertical side of the "П"-shaped frame.

[0005] In a further embodiment, the second connector forms two triangular support structures between the vertical and horizontal sides of the “П”-shaped frame.

[0006] In a further embodiment, the horizontal side of the “П”-shaped frame is composed of multiple steel structural components, and adjacent steel structural components are detachably connected by a third connector.

[0007] In a further embodiment, multiple anchor rods are connected to the outer side of the vertical side of the “П”-shaped frame. The end of the anchor rod away from the “П”-shaped frame is used to anchor it inside the tunnel wall. A pad is provided between the horizontal side of the “П”-shaped frame and the top of the tunnel.

[0008] In a further embodiment, the vertical side of the “П”-shaped frame is composed of multiple steel structural components, and adjacent steel structural components are detachably connected by a third connector.

[0009] In a further embodiment, the third connecting component is a steel structural component sleeve, which is connected to the steel structural component by bolts.

[0010] In a further embodiment, the first connector is a T-shaped component, and the horizontal and vertical sides of the T-shaped component are connected to the horizontal and vertical sides of the "П"-shaped frame respectively by bolts.

[0011] In a further embodiment, the second connector includes a first connecting block, a second connecting block, and a connecting rod. The first connecting block and the second connecting block are respectively welded to the horizontal and vertical sides of the “П”-shaped frame. Both ends of the connecting rod are provided with U-shaped heads, and the connecting rod is hinged to the first connecting block and the second connecting block through the U-shaped heads.

[0012] In a further embodiment, the leg support includes a base plate and a diagonal brace, with one end of the diagonal brace connected to the base plate and the other end hinged to the vertical side of the "П"-shaped frame.

[0013] In a further embodiment, a pad is connected to the bottom of the vertical side of the "П"-shaped frame.

[0014] The beneficial effects of this utility model are: The components of this utility model's support are detachably connected, eliminating the need for open flames underground and improving safety. Furthermore, the use of a "П"-shaped frame increases the contact area with the rectangular tunnel, reducing the need for other support materials and saving on concrete and other consumables. The second connector creates a triangular brace between the vertical and horizontal sides of the "П"-shaped frame, enhancing the central strength of the entire frame to reach or exceed the central support strength of an arched steel frame.

[0015] This utility model of support is suitable for underground rectangular cross-section roadways and can effectively improve the roadway formation rate.

[0016] All parts of this utility model support are convenient to be transported to the mine shaft using trackless equipment.

[0017] The individual components of this utility model are connected by hinges, which allows for faster support and eliminates the need for open flame operations, thus greatly reducing the risk of fire.

[0018] Compared with the prior art, the support structure of this utility model has its crossbeams and columns closely attached to the sides and roof of the rectangular roadway, providing prestress for the roadway. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view schematic diagram of a support for a rectangular underground roadway according to an embodiment of this utility model; Figure 2 This is a three-dimensional schematic diagram of a support for a rectangular underground tunnel according to an embodiment of this utility model; In the diagram: 1. “П”-shaped frame; 2. First connector; 3. Second connector; 31. First connecting block; 32. Second connecting block; 33. Connecting rod; 4. Leg support; 41. Base plate; 42. Diagonal brace; 5. Anchor rod; 6. Pad block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 As shown, a support for a rectangular underground tunnel includes a "П"-shaped frame 1. The vertical and horizontal sides of the "П"-shaped frame 1 are detachably connected by connectors. The connectors include a first connector 2 and a second connector 3. The first connector 2 is located at the upper end of the vertical side of the "П"-shaped frame 1. The two ends of the second connector 3 are hinged to the middle of the horizontal side and the upper part of the vertical side of the "П"-shaped frame 1. Leg support members 4 are detachably connected to the lower part of the vertical side of the "П"-shaped frame 1.

[0023] Its working principle is as follows: the rectangular roadway is directly supported by the "П"-shaped frame 1, which can increase the contact support area with the rectangular roadway and reduce the amount of filler material used. The second connector 3 forms a triangular support with the "П"-shaped frame 1, which improves the support strength of the middle of its horizontal side and meets the requirements of the middle support. At the same time, the first connector 2 and the second connector 3 are both detachable when participating in the assembly of the support, which is convenient for installation in the well.

[0024] Based on the above working principle, some implementation structures or embodiments are provided, in which the second connector 3 and the vertical and horizontal sides of the "П"-shaped frame 1 form two triangular support structures. This makes the support more stable.

[0025] The vertical side of the “П”-shaped frame 1 is composed of multiple steel structural components, and adjacent steel structural components are detachably connected by a third connector. This reduces the length of the vertical side of the frame, making it easier for the support to enter the tunnel.

[0026] The horizontal side of the “П”-shaped frame 1 is composed of multiple steel structural components, and adjacent steel structural components are detachably connected by a third connector. This reduces the length of the horizontal side of the frame, making it easier for the support to enter the tunnel.

[0027] Multiple anchor rods 5 are connected to the outer side of the vertical side of the “П”-shaped frame 1. The end of the anchor rod 5 away from the “П”-shaped frame 1 is used to anchor into the tunnel wall. This can further improve the stability of the vertical side support of the “П”-shaped frame 1.

[0028] The third connecting component is a steel structural component sleeve, which is connected to the steel structural component by bolts. This facilitates the connection of steel structural components and allows multiple steel structural components to be transported into the tunnel for reassembly.

[0029] The first connecting piece 2 is a T-shaped piece, and its horizontal and vertical sides are connected to the horizontal and vertical sides of the "П"-shaped frame 1 respectively by bolts. This facilitates the connection of the horizontal and vertical sides of the "П"-shaped frame 1 and also makes it convenient to transport it into the tunnel for reassembly.

[0030] The second connecting component 3 includes a first connecting block 31, a second connecting block 32, and a connecting rod 33. The first connecting block 31 and the second connecting block 32 are welded to the horizontal and vertical sides of the "П"-shaped frame 1, respectively. The connecting rod 33 has U-shaped heads at both ends, and the connecting rod 33 is hinged to the first connecting block 31 and the second connecting block 32 through the U-shaped heads. This facilitates the transportation of the second connecting component 3 into the tunnel for assembly.

[0031] like Figure 2 As shown, the leg support 4 includes a base plate 41 and a diagonal brace 42. One end of the diagonal brace 42 is connected to the base plate 41, and the other end is hinged to the vertical side of the "П"-shaped frame 1. This facilitates the transportation of the leg support 4.

[0032] The bottom of the vertical side of the “П”-shaped frame 1 is connected to a pad 6. This makes the leg support of the “П”-shaped frame 1 more stable.

[0033] The “П” shaped frame has a total horizontal length of 4780mm and a total vertical length of 4000mm. It can be made of mining grade 14 I-beams and is suitable for underground rectangular roadways with a cross-sectional specification of 5000mm x 4000mm.

[0034] During on-site installation, the "П"-shaped frame 1, first connector 2, second connector 3, and leg support 4 are first horizontally assembled. After assembly, they are erected. By adjusting the angle of the leg support 4, the "П"-shaped frame 1 is made to fit snugly against the top support of the tunnel. Waste anchor rods 5 or shims can be added under the two column legs to increase the stability of the column. Then, the leg support 4 is installed. Afterward, according to the position of the vertical side of the "П"-shaped frame 1, the leg anchor rods 5 are installed, with 2 sets of leg anchor rods 5 for each column.

[0035] It should be noted that the terms "first," "second," etc., used in this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein.

[0036] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A support for underground rectangular roadways, comprising a "П"-shaped frame (1), characterized in that, The vertical and horizontal sides of the “П”-shaped frame (1) are detachably connected by connectors. The connectors include a first connector (2) and a second connector (3). The first connector (2) is located at the upper end of the vertical side of the “П”-shaped frame (1). The two ends of the second connector (3) are hinged to the middle of the horizontal side and the upper part of the vertical side of the “П”-shaped frame (1). The lower part of the vertical side of the “П”-shaped frame (1) is detachably connected to a leg support (4).

2. The support for underground rectangular roadways according to claim 1, characterized in that, The second connector (3) forms two triangular support structures with the vertical and horizontal sides of the "П"-shaped frame (1).

3. A support for underground rectangular roadways according to claim 1, characterized in that, The horizontal side of the "П"-shaped frame (1) is composed of multiple steel structural members, and adjacent steel structural members are detachably connected by a third connector.

4. A support for underground rectangular roadways according to claim 1, characterized in that, Multiple anchor rods (5) are connected to the outer side of the vertical side of the "П"-shaped frame (1). The end of the anchor rod (5) away from the "П"-shaped frame (1) is used to anchor in the tunnel wall. A pad is provided between the horizontal side of the "П"-shaped frame (1) and the top of the tunnel.

5. A support for underground rectangular roadways according to claim 1, characterized in that, The vertical side of the "П"-shaped frame (1) is composed of multiple steel structural members, and adjacent steel structural members are detachably connected by a third connector.

6. A support for underground rectangular roadways according to claim 3 or 5, characterized in that, The third connecting component is a steel structural component sleeve, which is connected to the steel structural component by bolts.

7. A support for underground rectangular roadways according to claim 1, characterized in that, The first connector (2) is a T-shaped piece, and the horizontal and vertical sides of the T-shaped piece are connected to the horizontal and vertical sides of the "П"-shaped frame (1) by bolts.

8. A support for underground rectangular roadways according to claim 1, characterized in that, The second connector (3) includes a first connector (31), a second connector (32) and a connector (33). The first connector (31) and the second connector (32) are welded to the horizontal and vertical sides of the "П"-shaped frame (1) respectively. Both ends of the connector (33) are provided with U-shaped heads, and the connector (33) is hinged to the first connector (31) and the second connector (32) through the U-shaped heads.

9. A support for underground rectangular roadways according to claim 1, characterized in that, The leg support (4) includes a base plate (41) and a diagonal brace (42). One end of the diagonal brace (42) is connected to the base plate (41), and the other end is hinged to the vertical side of the "П"-shaped frame (1).

10. A support for underground rectangular roadways according to claim 1, characterized in that, The bottom of the vertical side of the "П"-shaped frame (1) is connected to a pad (6).

Images