Mine pipe shed supporting structure

Abstract

The utility model provides a mine pipe shed supporting structure, which belongs to the technical field of pipe shed construction, aims to solve the problems of easy hole collapse and easy drill jamming of loose surrounding rock roadways in mining drilling construction, and comprises a plurality of supports and shed pipes, the supports are distributed in an array manner, the shed pipes are arranged in a stone wall in a penetrating manner, each support comprises two support legs, and the tops of the two support legs are connected through a cross beam. The cross beams of the adjacent supports are arranged on the upper faces and the lower faces of the shed pipes respectively, so that the tops of the cross beams support one shed pipe, the bottoms of the cross beams abut against the other adjacent shed pipe, and the supporting legs on the same side of the multiple supports are connected through connecting bodies.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipe shed construction, and more specifically, relates to a mine pipe shed supporting structure. Background Art

[0002] In the mining industry, tunneling in loose surrounding rock often uses pipe-roof support as advance support. However, the drilling process with pipe-roof support is prone to difficulty in drilling and easy collapse. The conventional advance support process of "drilling, cleaning, and tamping a small advance pipe" is prone to collapse, leaving the drill bit and drill rod in the hole instead of the small advance pipe as advance support. This significantly increases support costs without achieving the desired support effect. Roof collapses frequently occur after blasting disturbances. Conventional eccentric drill bit and pipe drilling methods primarily utilize the principle of rotary expansion of the eccentric drill bit. The drill tool and pipe-and-casing are connected via the drill rod. During drilling, a down-the-hole impactor transmits energy to the center drill bit, which in turn transmits impact to the pipe shoe bit. The pipe shoe bit drives the casing forward, achieving effective surrounding rock advancement of the advance steel pipe. Although this method can effectively solve the problem of "difficult to drill and easy to collapse", there is a phenomenon of slurry stuck in the loose surrounding rock, which makes the drill withdrawal fail. In addition, the minimum hole diameter of the down-the-hole hammer eccentric drilling system is φ90mm, which cannot be used with a smaller hole diameter follower casing. It is not suitable for small-section tunnels with loose surrounding rock.

[0003] Therefore, in view of this, the existing structure and deficiencies are studied and improved, and a mine pipe support structure is provided in order to achieve a more practical purpose. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a mine pipe shed support structure to solve the problem of "easy hole collapse and easy drill jam" in loose surrounding rock tunnels during mining drilling construction.

[0005] The purpose and effect of the mine pipe shed support structure of the utility model are achieved by the following specific technical means:

[0006] A mine pipe shed support structure includes multiple array-distributed supports and a shed pipe inserted into a stone wall. The supports include two legs, the tops of the two legs are connected by a crossbeam, and the crossbeams of adjacent supports are respectively arranged on the upper and lower surfaces of the shed pipe, so that the top of the crossbeam supports one shed pipe and the bottom of the crossbeam abuts against another adjacent shed pipe. The legs on the same side of multiple supports are connected by a connector.

[0007] Furthermore, a leg guard anchor rod is provided on the outer side of the supporting leg.

[0008] Furthermore, the supporting legs and the cross beam are both I-beams, and reinforcing ribs are connected between the supporting legs and the cross beam.

[0009] Furthermore, the connector is filled with concrete or cement.

[0010] Furthermore, the scaffolding pipe comprises a drilling steel pipe, and an expansion sleeve is provided at the end of the drilling steel pipe.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] By supporting the roof pipes through the bracket crossbeam, the stability of the advanced pipe sleeve guidance is increased, and the rock drill can transmit the information from the drill rod to the center drill bit more accurately, thereby improving the hole formation rate of the pipe roof, making construction more convenient, less prone to collapse, and smoother drill withdrawal. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of a mine pipe roof supporting structure of the present utility model.

[0014] Figure 2 It is a side view of a mine pipe roof supporting structure of the utility model.

[0015] Figure 3 It is a partial structural diagram of the roof pipe in the utility model.

[0016] In the figure, the corresponding relationship between the component names and the drawing numbers is as follows:

[0017] 1. Support legs; 2. Crossbeam; 3. Reinforcement ribs; 4. Shed pipes; 5. Connectors; 6. Leg anchors; 401. Drilling steel pipe; 402. Hole expansion sleeves. DETAILED DESCRIPTION

[0018] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0019] In the description of this utility model, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] In the description of this utility model, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0021] Example:

[0022] As attached Figure 1 To the attached Figure 3 As shown:

[0023] The utility model provides a mine pipe shed support structure, including a plurality of array-distributed brackets and a shed pipe 4 penetrated in a stone wall. The bracket includes two legs 1, and the tops of the two legs 1 are connected by a crossbeam 2 to form a side-by-side arch frame. The legs 1 and the crossbeam 2 are both I-beams to increase torsional strength. The crossbeams 2 of adjacent brackets are respectively arranged on the upper and lower surfaces of the shed pipe 4, so that the shed pipe 4 is inclined to pass through the gap between adjacent crossbeams 2, so that the top of the crossbeam 2 supports one shed pipe 4, and its bottom abuts against another adjacent shed pipe 4, so that multiple brackets can support the shed pipe 4 exposed outside the stone wall to prevent the shed pipe from bending. The straight shed pipe can be better drilled in and out, and the effective support of the shed pipe 4 reduces the downward pressure on the surrounding rock, the hole is not easy to collapse, and the drilling is also smoother.

[0024] The legs 1 on the same side of multiple supports are connected by a connector 5 to form an integral support structure. The connector 5 is filled with concrete or cement, and multiple supports limit each other, making the structure more stable. In addition, a leg anchor 6 is provided on the outside of the leg 1 to support the side wall of the mine or to be inserted into the side wall of the concave mine to stabilize the leg 1.

[0025] Among them, the roof pipe 4 includes a drilling steel pipe 401, and a reaming sleeve 402 is provided at the end of the drilling steel pipe 401 for installing a center drill bit to form a drilling drill bit. The raised sphere on the surface of the reaming sleeve 402 makes drilling easier, and the drill tool and the drilling steel pipe 401 are connected as a whole through the drill rod. During drilling, the down-the-hole impactor transmits energy to the center drill bit, and the center drill bit transmits impact to the pipe shoe drill bit, which drives the roof pipe 4 to drill; and the reaming sleeve 402 is an overall 42CrMo+hard alloy design, and must go through the following processes: cutting, thread processing, welding of the reaming sleeve, and surface anti-rust treatment.

[0026] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A mine pipe roof support structure, characterized by: The invention comprises a plurality of brackets distributed in an array and a scaffolding pipe (4) penetrating a stone wall, wherein the bracket comprises two legs (1), the tops of the two legs (1) are connected by a crossbeam (2), the crossbeams (2) of adjacent brackets are respectively arranged on the upper and lower surfaces of the scaffolding pipe (4), so that the top of the crossbeam (2) supports one scaffolding pipe (4) and the bottom thereof abuts against another adjacent scaffolding pipe (4), and the legs (1) on the same side of the plurality of brackets are connected by a connector (5).

2. A mine pipe roof support structure according to claim 1, characterized in that: A leg guard anchor rod (6) is provided on the outside of the supporting leg (1).

3. A mine pipe roof support structure according to claim 1, characterized in that: The supporting legs (1) and the cross beam (2) are both I-beams, and a reinforcing rib (3) is connected between the supporting legs (1) and the cross beam (2).

4. A mine pipe roof support structure according to claim 1, characterized in that: The connector (5) is filled with concrete or cement.

5. The mine pipe roof support structure according to claim 1, characterized in that: The scaffolding pipe (4) comprises a drilling steel pipe (401), and a hole expansion sleeve (402) is provided at the end of the drilling steel pipe (401).

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