CN204113320U - Bump tunnel step type energy-absorbing erosion control support - Google Patents

Abstract

The utility model belongs to the supporting device of coal mining equipment in coal mines, in particular to a step-type energy-absorbing and anti-scour support for impact rock roadway. Parallel bases (7) form the frame, four hydraulic uprights (3) are arranged symmetrically above the two parallel top beams (1), symmetrically on the outer surfaces of the two parallel bases (7) and the top beam (1) Equipped with three hydraulic uprights (2) in the horizontal direction, a four-bar linkage mechanism is installed between two parallel top beams (1) and the base (7), and between the upper top beams (1) between two sets of supports Two telescopic beams (10) are used to connect between them, and energy-absorbing and anti-shock hydraulic columns (4) are arranged between the top beam (1) and the front and rear ends of the base (7) of each group, which can greatly reduce the deformation of the roadway and the labor intensity of workers and production costs, improve operational safety, accelerate advance support speed, and meet the requirements of high-yield and efficient fully mechanized mining face.

Description

Stepping energy-absorbing and anti-scour support for impact rock roadway

technical field

The utility model belongs to a support device for underground coal mining equipment in coal mines, in particular to a walking-type energy-absorbing and anti-scour support for rock impact tunnels.

Background technique

Deep mining is an inevitable trend in the development of the coal industry. The structural characteristics, deformation and failure characteristics, energy release characteristics, and engineering response characteristics of deep coal and rock mass are significantly different from shallow coal and rock mass, which is more likely to induce rock burst disasters, causing serious damage and casualties underground. Accidents, with the increase of mining depth, the stress in the coal body increases, the greater the possibility of rock burst, especially the greater the risk of rock burst along the groove of the working face. Research statistics show that more than 75% of the rock burst occurs in the roadway, especially in the 0-100m advanced support range of the working face.

Now the shallow mining is gradually developing to the deep mining, while the roadway support forms are still maintained in the anchor rod, anchor cable, metal bracket, metal shrinkable bracket, anchor shotcrete, etc. These support methods have low support strength and high labor intensity. High cost and poor safety have seriously restricted the efficient and safe production requirements of coal mines. At present, the existing advanced hydraulic supports mainly have the following deficiencies: (1) The moving method of some advanced supports is likely to cause repeated support to the roof and cause the roof to break, which is not conducive to roadway maintenance. (2) The roadway is supported by anchor rods and anchor cables, and there will be some leakage on the roadway wall, which will affect the contact effect between the top beam of the advanced support and the roadway roof. (3) The advanced support has a high protection ability for the top and bottom plates, but the impact resistance of the support is poor, and the lateral protection ability and stability are insufficient. (4) There are various production supporting equipment placed in the advance support section. The size, position and advance support of these equipment are not easy to match, and they are not as flexible as the single support.

Contents of the invention

The purpose of the utility model is to overcome the above-mentioned technical deficiencies, and provide a self-moving high-efficiency, safe and reliable rock impact roadway stepping energy-absorbing and anti-shock bracket with strong bearing capacity and impact resistance.

The technical scheme adopted by the utility model to solve the technical problem is: the step-type energy-absorbing and anti-scour support of the impact rock roadway includes a base, a top beam, a hydraulic column, a hydraulic column, a telescopic beam, and a telescopic beam. It is characterized in that each group The upper part of the bracket is composed of two parallel top beams, and the lower part is composed of two parallel bases. The upper and lower symmetrical connections between the two parallel top beams and the base are connected by three jacks. There are four hydraulic columns 2, and three horizontal hydraulic columns 1 are symmetrically installed on the outer surfaces of the two parallel bases and the roof beam, and the telescopic beams 1 are respectively connected to the outer ends of the hydraulic columns 1 on the base and the roof beam. A four-bar linkage mechanism is installed between the two parallel top beams and the base. The four-bar linkage mechanism is composed of an upper link, a lower link and an inclined beam. The upper link, the lower link and the inclined beam It is a hinged connection, and the upper beams between the two groups of supports are connected by two telescopic beams, and the bases are connected by two jacks. There is an energy-absorbing anti-shock between the top beams of each group and the front and rear ends of the base. hydraulic column.

The beneficial effects of the utility model are: after the hydraulic column is installed on the top beam of the energy-absorbing and anti-scouring bracket of the rock impact roadway, the contact position between the top beam and the top plate can be contacted according to the design position, which strengthens the force of the top beam of the bracket and overcomes the support movement. During the erection process, the roof is repeatedly supported and the roof is broken, which effectively avoids the anchor rod and anchor cable support in the leakage part of the roadway wall, and enhances the contact effect between the support top beam and the roadway roof. The step-type energy-absorbing and anti-scour support for rock impact roadway has high protection ability for roof and floor, and also has high protection ability for lateral direction. The design and use of energy-absorbing anti-scour hydraulic column increases the impact resistance of the support. The height of the walking-type energy-absorbing and anti-scour support for rock impact tunnels can be adjusted by energy-absorbing and anti-scourk hydraulic columns, and the lateral width can be adjusted by hydraulic column 1 and jack 1. It is suitable for rectangular tunnels of various sizes and can be self-moving. After the rock burst roadway is strengthened with step-type energy-absorbing and anti-scour support, it can greatly reduce roadway deformation, labor intensity and production costs, improve operation safety, accelerate advance support speed, and meet high-yield and high-efficiency fully mechanized mining face requirements.

Description of drawings

The following will be described in detail with examples in conjunction with the accompanying drawings.

Fig. 1 is a structural diagram of a stepping energy-absorbing anti-scour support in a rock burst roadway.

Fig. 2 is a bottom view of Fig. 1 .

FIG. 3 is a top view of FIG. 1 .

Fig. 4 is a left side view of Fig. 1 connected with surrounding rock.

In the figure, 1-top beam; 2-hydraulic column 1; 3-hydraulic column 2; 4-energy-absorbing anti-shock hydraulic column; 5-jack 1; 6-jack 2; 7-base; 8-1-upper link ; 8-2-lower connecting rod; 8-3-inclined beam; 9-telescopic beam one; 10-telescopic beam two; 11-surrounding rock.

Detailed ways

For the embodiment, referring to accompanying drawings 1-3, the rock impact roadway stepping energy-absorbing and anti-shock bracket is composed of two parallel top beams 1 above each group of bracket devices, and two parallel bases 7 below to form a frame. The two parallel top beams 1 and the base 7 are connected up and down symmetrically with three jacks 1-5. Four hydraulic columns 2 3 are symmetrically arranged above the two parallel roof beams 1, and hydraulic column 1 2 in three horizontal directions is symmetrically installed on the outer surfaces of the two parallel bases 7 and the roof beam 1. The outer ends of the hydraulic column-2 on the beam 1 are respectively connected to the lower end and the upper end of the vertical telescopic beam-9. A four-bar linkage is housed between the parallel base 7 and the top beam 1, and the four-bar linkage is made up of an upper link 8-1, a lower link 8-2 and an oblique beam 8-3. The top beam 1 between the two groups of devices is connected with a horizontal telescopic beam 2 10, and the base 7 is connected with a jack 2 6. Between the top beam 1 and the front and rear ends of the base 7 of each group, an energy-absorbing anti-shock hydraulic prop 4 is arranged. Referring to accompanying drawing 4, it is the connection relationship between the whole device and the surrounding rock 11, the hydraulic column 2 3 above the top beam 1 is connected with the upper surrounding rock 11, and the telescopic beam 9 on the outside of the hydraulic column 1 2 is connected to the surrounding rock 11 on both sides. Connection, the base 7 is connected with the surrounding rock 11, and an energy-absorbing anti-shock hydraulic column 4 is arranged between the base 7 and the top beam 1 . The device can be used in rectangular roadways of various sizes and can realize self-moving.

The working principle of the stepping energy-absorbing and anti-scour support in the impact rock roadway is that the jack-5 is used to connect the two parallel top beams 1 and the base 7 to connect the two sides, and the hydraulic column-2 and the telescopic beam-9 are used to withstand the side of the roadway. Rock 11 geopressure shock. The top beam 1 is provided with a hydraulic column 2 3 and the energy-absorbing anti-scourrence support 4 between the top beam 1 and the base 7 can completely resist the pressure of the upper and lower surrounding rocks 11, and the whole device has an all-round effect on the impact ground pressure of the roadway. supporting role.

Claims (1)

1. a bump tunnel step type energy-absorbing erosion control support, comprise base (7), back timber (1), hydraulic vertical prop one (2), hydraulic vertical prop two (3), extensible canopy one (9), extensible canopy two (10), it is characterized in that the top of every pack support is by two parallel back timbers (1), below forms framework by two parallel bases (7), on between two parallel back timbers (1) and base (7), lower symmetry connects with three jack one (5), four hydraulic vertical props two (3) are arranged with in two parallel back timber (1) tops, the symmetrical hydraulic vertical prop one (2) that three horizontal directions are housed on the lateral surface of two parallel bases (7) and back timber (1), the external end head of base (7) with the hydraulic vertical prop one (2) on back timber (1) is connected lower end and the upper end of extensible canopy one (9) respectively, between two parallel back timbers (1) and base (7), quadric chain is housed, quadric chain is by upper connecting rod (8-1), lower link (8-2) and cant beam (8-3) composition, connect with extensible canopy two (10) between top back timber (1) between two pack supports, connect with jack two (6) between base (7), energy-absorbing erosion control hydraulic vertical prop (4) is provided with between the back timber often organized (1) and base (7) rear and front end.