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Large-height-difference advanced mining stopping process

A technology of height difference and craftsmanship, applied in mining equipment, ground mining, mining equipment, etc., can solve the problems of safety, affecting safety production, unreasonable overlap of scraper conveyor heads, etc., to ensure continuity, avoid The effect of workload

Inactive Publication Date: 2021-01-08
兖矿能源集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] During the advancing process of the coal mining face, because the scraper conveyor is affected by many factors such as gravity and support thrust, it is subjected to "upward" or "downward" component forces along the inclined direction of the coal mining face, causing the scraper The conveyor moves in the direction of the two lanes of the coal mining face (commonly known as "up and down"), resulting in unreasonable lap joints at the head of the scraper conveyor, which can easily cause mechanical accidents, cause safety hazards, and affect safe production

Method used

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  • Large-height-difference advanced mining stopping process
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  • Large-height-difference advanced mining stopping process

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specific Embodiment 1

[0039] This embodiment is described in detail by taking a fully mechanized caving face as an example. The coal seam structure of the fully mechanized caving face is complex, and a fine sandstone with a thickness of 0.03m is developed at a distance of 2.8m to 3.0m from the roof. The average coal thickness is 8.76m, the coal seams at the northwest and southeast corners of the working face are thinner, the middle coal seams are thicker, and the Platinum hardness is f=2-3. During the advancing process of the fully mechanized caving face, determine the position of the production stop line 100: determine the position of the stop production line 100 according to the maximum recovery of coal resources or the angle of the adjacent coal mining face, such as figure 1 As shown, the angle between the production stop line 100 and the horizontal plane is 16°.

[0040] Specifically, the height difference between the rail alignment and the transportation alignment is 30m, the rail alignment is...

specific Embodiment 2

[0068] This embodiment is the same as the specific embodiment 1 in that the same working surface is taken as an example for illustration.

[0069] Specifically, such as Figure 1-4 As shown, the head of the coal shearer is advanced to the front of the stop production line 100, and the coal mining face is stopped by means of rotary stop and segmented online. Determine the location of stop production line 100: determine the location of stop production line 100 according to the maximum recovery of coal resources or the angle of the adjacent coal mining face, such as figure 1 As shown, the angle between the production stop line 100 and the horizontal plane is 16°.

[0070] Specifically, the height difference between the rail alignment and the Yunshun is 30m, the rail alignment is 60m ahead of the Yunshun when the mining is stopped, and the net slope length of the working face is 213m when the mining is stopped, an increase of 3.8m.

[0071] Furthermore, the specific process of r...

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Abstract

The invention discloses a large-height-difference advanced mining stopping process. A machine head of a coal mining machine is pushed to the position in front of a mining stopping line, and a coal mining working face is subjected to mining stopping in a rotary mining stopping and segmented net feeding manner. The rotary mining stopping and segmented net feeding manner comprises the specific process that the machine head of the coal mining machine is pushed to the position in front of the mining stopping line, according to the net feeding and rope feeding requirements, the machine head end is subjected to mining stopping and rope creating conditions, then a machine tail of the coal mining machine rotates, and according to the rotating footage number and the pushing distance, net feeding andrope feeding work is completed step by step in the machine tail direction. According to the large-height-difference advanced mining stopping process, equipment lap joint of the machine head can be normally kept, the workloads of adding and removing a chute and leaning on a reversed loader and a chute support of the machine head are reduced, meanwhile, work of concentrated shutdown construction needed by net feeding and rope feeding is decomposed into daily work and cyclic footage, and production continuity is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of coal mine mining, and in particular relates to a technology for stopping mining ahead of time with a large height difference. Background technique [0002] During the advancing process of the coal mining face, because the scraper conveyor is affected by many factors such as gravity and support thrust, it is subjected to the "upward" or "downward" component force along the inclined direction of the coal mining face, resulting in the scraper conveyor The conveyor moves toward the two lanes of the coal mining face (commonly known as "up and down"), resulting in unreasonable lap joints at the head of the scraper conveyor, which can easily cause mechanical accidents, cause safety hazards, and affect safe production. [0003] Therefore, prior art still needs further development and improvement. Contents of the invention [0004] Aiming at the various deficiencies of the existing technology, in order to solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/00E21C41/18E21F13/06E21F17/00
CPCE21C35/00E21C41/18E21F13/066E21F17/00
Inventor 李佃飞丁胜强刘勇史德博高猛秦其智邵东岩
Owner 兖矿能源集团股份有限公司