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Steeply inclined coal seam filling mining method and application

A mining method and steep inclination technology are applied in the field of backfilling and mining of steeply inclined coal seams, and can solve the problems of low efficiency, harsh working environment, and inability to fully exploit and utilize steeply inclined coal seams.

Pending Publication Date: 2020-12-15
SHANDONG UNIV OF SCI & TECH
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  • Abstract
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Problems solved by technology

[0002] At present, the production technology of flexible cover support blasting is generally used in steeply inclined coal seams, which has low efficiency, poor safety, and harsh working environment, which has been banned by local governments. A mature mining equipment system for steeply inclined coal seams, which leads to the inability to fully mine and utilize steeply inclined coal seams, resulting in a waste of resources

Method used

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  • Steeply inclined coal seam filling mining method and application
  • Steeply inclined coal seam filling mining method and application
  • Steeply inclined coal seam filling mining method and application

Examples

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Embodiment

[0027] A filling mining method for a steeply inclined coal seam comprises the following steps,

[0028] (1) Excavation transportation lane, air return lane and cut-outs: excavate the transportation lane (lower level lane 2) and return air lane (upper level lane 1) according to the longwall working face system, and arrange coal gangue tape at the upper return air lane Conveyor 17 and mixed slurry pipeline 16, arrange raw coal scraper conveyor 13 at the lower transportation lane; use a sharply inclined continuous miner with temporary support at the designed cutting eye position to open a pseudo-inclined edge cutting with a pseudo-inclination angle not greater than 45º Eye 15 is used as a permanent ventilation pedestrian passage on this working face;

[0029] (2) Then use the steeply inclined continuous mining machine with temporary support to mine the pseudo-inclined branch road Z1 with a width of 3-8m at a distance of 3-8m from the side cutout. The steeply inclined coal seam ha...

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Abstract

The invention provides a steeply inclined coal seam filling mining method. The filling mining method is a coal mining method for mining by using a temporary support type continuous mining machine of the inclined coal seam and filling a branch roadway in a self-flowing manner. At present, a flexible shield support blasting mining production process is generally adopted in a steeply inclined coal seam, but the flexible shield support blasting mining production process is low in efficiency, poor in safety, and severe in working environment, and is forbidden by local government. The problems can be effectively solved by the steeply inclined coal seam filling mining method and an application.

Description

technical field [0001] The invention belongs to the technical field of coal mining and transportation, and more specifically relates to a filling mining method and application of steeply inclined coal seams. Background technique [0002] At present, the production technology of flexible cover support blasting is generally used in steeply inclined coal seams, which has low efficiency, poor safety, and harsh working environment, which has been banned by local governments. The equipment system for the mature mining of steeply inclined coal seams leads to the fact that steeply inclined coal seams cannot be fully exploited and utilized, resulting in a waste of resources. Contents of the invention [0003] In order to solve the above-mentioned technical problems, the present invention provides a filling and mining method of a steeply inclined coal seam and its application. With this invention, the steeply inclined coal seam can be mined safely and efficiently. [0004] The tech...

Claims

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Application Information

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IPC IPC(8): E21C41/18E21F15/00E21F13/06E21C25/68E21C29/02E21C35/04E21C35/20
CPCE21C25/68E21C29/02E21C35/046E21C35/20E21C41/18E21F13/06E21F15/005
Inventor 成云海赵大勇
Owner SHANDONG UNIV OF SCI & TECH
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