Temporary supporting device for coal mine tunneling

Abstract

The invention discloses a temporary supporting device for coal mine tunneling. The temporary supporting device comprises three front probing beams with the size of phi 80 * 5200 mm; 9 hanging rings, W-shaped steel belts, back top bamboo clamping plates and wood wedges; nine hanging rings are fixed to the first three rows of permanent support anchor rods close to the head-on top, and then a front canopy of phi 80 * 5200 mm penetrates through the hanging rings; a W-shaped steel belt is transversely laid on the forepoling bar of phi 80 * 5200 mm, and then a back top bamboo clamping plate is longitudinally laid on the W-shaped steel belt; a wood wedge is used for firmly jacking the top bamboo clamping plate; during operation, all personnel operate in a permanent support completed roadway, and anchor rod cable construction operation is carried out on the head-on face of a working face row by row.

Description

Technical Field

[0001] The invention relates to a temporary supporting device for coal mine excavation. Background Art

[0002] At present, the EBZ135 type tunnel boring machine used in the excavation process of the 1890 Coal Mine is not equipped with an onboard temporary support device. When the personnel are constructing the anchor cable, the roof coal gangue is easily shaken and falls, which brings huge safety hazards to the on-site construction. In order to ensure the safety of on-site construction, a temporary support device is processed to build a defense line above the operator's head, so that the fallen coal gangue will not fall into the on-site working environment, ensuring the safety of construction.

[0003] Literature search: Patent application number: CN202223255086.1, discloses a temporary support device for coal mine excavation, including an arc-shaped protective plate, the bottom end of the arc-shaped protective plate is fixedly connected to four hydraulic support legs, the top of the arc-shaped protective plate is slidably connected to a cleaning scraper, one side of the cleaning scraper is fixedly connected to a traction rope, the other side of the cleaning scraper is fixedly connected to a pull rope, and the top of the arc-shaped protective plate is fixedly connected to two guide covers for guiding the cleaning scraper. Through the coordinated use of the arc-shaped protective plate, the cleaning scraper and the collecting box, it is convenient to process the collected minerals, and there is no need for the staff to collect and process the broken minerals in the channel separately, which saves time and effort, reduces the workload of the workers, and prevents the broken minerals from falling to the ground of the coal mine channel, thereby avoiding the situation where the accumulation of broken minerals in the channel affects the travel of the tunneling machine when the tunneling machine moves forward. Patent application number: CN202220759504.1, discloses a device for temporary support of underground tunnels in coal mines, including: a working face top plate, a threaded steel anchor rod is installed on the working face top plate, and each two support devices form a group; the support device includes two parallel first screw rods, the first ends of the two first screw rods are jointly installed with a tray, a first threaded hole is arranged at the center of the tray, a second screw rod is installed through the first threaded hole, a connecting nut is installed at the first end of the second screw rod, the connecting nut is connected to the threaded steel anchor rod, a fixing nut is installed at the second end of the second screw rod, a fixing plate, a fastening nut and a limit plate are jointly installed at the second end of the second screw rod, the fastening nut is located below the fixing plate, and the limit plate is located below the fastening nut; wherein a front probe beam is installed between the two first screw rods. The device solves the problem that the existing support method is not ideal, the support process is arbitrarily operated by construction personnel, the support is not firm, and it is easy to cause safety hazards. Patent application number: CN202222695052.8, discloses a temporary tunnel support device, which includes a support rod, one end of the support rod is provided with a receiving cavity, the open end of the support rod is provided with a conduit and an anchor net support, the angle between the anchor net support and the support rod is adjustable, and the conduit is connected to the receiving cavity; the outer side of the support rod is provided with a mounting hole and a propulsion hole that penetrate the receiving cavity, and the outer side of the support rod is also installed with a guide box, in which a flexible push rod is slidably connected, one end of the flexible push rod passes through the propulsion hole and extends into the receiving cavity, and the other end of the flexible push rod is located in the guide box. This application connects the anchor net support with the support rod, so that the operator can independently perform the anchor net support and the medicine bag and the anchor rod enter the preparatory installation state, combined with the flexible push rod that can change the thrust direction, so that the operator can independently operate the entire construction process of the temporary tunnel support, saving manpower and improving installation efficiency. Summary of the invention

[0004] In view of the actual situation of the No. 1890 Coal Mine, the present invention provides a temporary support device for coal mine excavation. By constructing a temporary top support device, on-site operators can operate under the condition of top protection, ensuring the safety of on-site excavation construction personnel.

[0005] The above-mentioned application purpose of the present application is achieved through the following technical scheme: a temporary support device for coal mine excavation, comprising: 3 front exploration beams of φ80×5200mm; 9 lifting rings, W-shaped steel belts, back bamboo plywood, and wooden wedges; the 9 lifting rings are fixed to the anchor rods of the first three rows of permanent support near the top of the head, and then the φ80×5200mm front exploration beam is passed through the lifting rings; W-shaped steel belts are laid horizontally on the φ80×5200mm front exploration beam, and then back bamboo plywood is laid longitudinally on the W-shaped steel belt; wooden wedges are used to secure the top bamboo plywood; during operation, all personnel work in the tunnel where the permanent support has been completed, and carry out anchor cable construction work row by row to the head of the working face.

[0006] By fixing the lifting ring on the permanent support anchor rod, passing the front exploration beam through the lifting ring, laying W-shaped steel belts, top bamboo plywood, wooden wedges, etc. on the front exploration beam to construct a temporary top support device, so that on-site operators can work under the condition of top protection, ensuring the safety of on-site excavation construction workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a temporary support plan of the transport lane of the present invention; Figure 2 This is a cross-sectional view of the temporary support of the transport tunnel of the present invention. Implementation A temporary support device for coal mine excavation, comprising: 3 front exploration beams 3 of φ80×5200mm; 9 lifting rings 4, W-shaped steel strips 1, back bamboo splints 2, and wooden wedges; the 9 lifting rings 4 are fixed to the anchor rods 5 of the first three rows of permanent support near the top of the head, and then the front exploration beam 3 of φ80×5200mm passes through the lifting rings 4; the W-shaped steel strips 1 are laid horizontally on the front exploration beam 3 of φ80×5200mm, and then the back bamboo splints 2 are laid longitudinally on the W-shaped steel strips 1; the top bamboo splints are fixed firmly with wooden wedges; during operation, all personnel work in the tunnel where the permanent support has been completed, and carry out anchor cable construction work row by row to the head of the working face.

Claims

1. A temporary support device for coal mine excavation, characterized in that include: 3 φ80×5200mm front exploration beams; 9 lifting rings, W-shaped steel belts, bamboo back plywood, and wooden wedges; fix the 9 lifting rings to the anchor rods of the first three rows of permanent supports near the top of the head, and then pass the φ80×5200mm front exploration beam through the lifting rings; lay W-shaped steel belts horizontally on the φ80×5200mm front exploration beams, and then lay bamboo back plywood longitudinally on the W-shaped steel belts; Use wooden wedges to secure the top bamboo plywood; during the operation, all personnel work in the tunnel where permanent support has been completed, and carry out anchor cable construction work in rows towards the working face.

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