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Method for backfilling goaf and supporting roof

A technology for gobs and roofs, which is applied to fillings, mining equipment, earthwork drilling and mining, etc. It can solve the problems of unavoidable roof collapse, lack of support strength, waste of water resources, etc., and protect groundwater resources and land resources. , the effect of protecting the environment

Inactive Publication Date: 2010-09-01
高凤翔
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, there are three kinds of coal mining support methods commonly used in coal mines, one is to reserve coal pillars to support the roof; the other is to support the roof with rigid pillars, and the rigid pillar methods include wooden rods, spiral pillars, hydraulic Supporting methods such as brackets and other equipment, this method of support still needs to be put on the roof; there is another method that uses gangue soil backfilling, this method lacks sufficient support strength, and can only reduce the depth of roof collapse, but it cannot avoid roof collapse. collapse
Using the above methods to support the roof to mine coal will inevitably lead to a series of problems such as low recovery rate and serious waste of resources; ground subsidence destroys the land; a large amount of waste of water resources; spontaneous combustion of remaining coal; pollution of the environment; poor safety and so on.

Method used

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  • Method for backfilling goaf and supporting roof
  • Method for backfilling goaf and supporting roof
  • Method for backfilling goaf and supporting roof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: A method for backfilling gobs and supporting the roof, which includes the following steps in turn: (1): preparation stage: (a), drilling a well from the ground to the roadway, and inserting a Self-weight pressurized pipe, install a valve on the part of the pipe exposed on the ground, and close the gap between the well wall and the pipe: First, drill an 8 cm well from the ground to the middle top of the backfill area, and insert a 1 meter long well into the well Install valves on the part of the pipeline exposed to the ground, and close the gap between the well wall and the pipeline.

[0027] (b) Lay the pressurized fluid delivery pipeline on the top of the roadway, and then install the isolation film from the arc-shaped top of the roadway: hang the pressurized fluid delivery pipeline with a diameter of 2 cm on the top of the roadway, and then glue or glue it from the arc-shaped top of the roadway. Iron nails to the isolation film. The isolation film is an...

Embodiment 2

[0040] Embodiment 2: A method for backfilling gobs and supporting the roof, which includes the following steps in turn: (1): preparation stage: (a), drilling a well from the ground to the roadway, and inserting a Self-weight pressurized pipe, install a valve on the part of the pipe exposed on the ground, and close the gap between the well wall and the pipe: First, drill a 40-centimeter well from the ground to the middle top of the backfill area, and insert a 30-meter-long well into the well Install valves on the part of the pipeline exposed to the ground, and close the gap between the well wall and the pipeline.

[0041] (b) Lay the pressurized fluid delivery pipeline on the top of the roadway, and then install the isolation film from the arc-shaped top of the roadway: Hang the pressurized fluid delivery pipeline with a diameter of 20 cm on the top of the roadway, and then glue or glue it from the top of the roadway arc. Iron nails to the isolation film. The isolation film is...

Embodiment 3

[0054] Embodiment 3: A method for backfilling gobs and supporting the roof, which includes the following steps in turn: (1): preparation stage: (a), drilling a well from the ground to the roadway, and inserting a Self-weight pressurized pipe, install a valve on the part of the pipe exposed on the ground, and close the gap between the well wall and the pipe: First, drill a 24 cm well from the ground to the middle top of the backfill area, and insert a 15-meter-long well into the well Install valves on the part of the pipeline exposed to the ground, and close the gap between the well wall and the pipeline.

[0055] (b) Lay the pressurized fluid delivery pipe on the top of the roadway, and then install the isolation film from the arc-shaped top of the roadway: hang the pressurized fluid delivery pipe with a diameter of 10 cm on the top of the roadway, and then glue or glue it from the arc-shaped top of the roadway. Iron nails to the isolation film. The isolation film is any one ...

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Abstract

The present invention discloses a method for backfilling goat and supporting roof. said method includes the following steps: (1), preparatory stage; (2), pouring mixed slurry into tunnel; (3), repeatedly applying pressure to the mixed slurry in the tunnel interior and making vibration; and (4) filling up gap with expansion material slurry, pressurizing by means of self-weight and solidifying, etc.

Description

Technical field: [0001] The invention relates to a method for backfilling a gob and supporting a roof. Background technique: [0002] At present, there are three kinds of coal mining support methods commonly used in coal mines, one is to reserve coal pillars to support the roof; the other is to support the roof with rigid pillars, and the rigid pillar methods include wooden rods, spiral pillars, hydraulic Supporting methods such as brackets and other equipment, this support method still needs to be put on the roof; there is another method that uses gangue soil backfilling, this method lacks sufficient support strength, and can only reduce the depth of the roof collapse, but it cannot avoid roof collapse. collapse. Using the above methods to support the roof to mine coal will inevitably lead to a series of problems such as low recovery rate and serious waste of resources; ground subsidence destroys the land; a large amount of waste of water resources; spontaneous combustion ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F15/08
Inventor 高凤翔
Owner 高凤翔
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