Underground no pillar recovery method of coal mine
A recovery method and a coal pillar-free technology, which is applied in mine/tunnel ventilation, ground mining, mining equipment, etc., can solve problems such as retaining lanes, high cost of digging lanes, immature coal pillar recovery technology, waste of coal resources, etc. Achieve the effect of reducing the amount of roadway excavation engineering and maintenance, and improving the recovery rate of coal resources
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Example Embodiment
[0016] The specific embodiments of the present invention will be described in detail below with reference to the drawings:
[0017] As shown in Fig. 1, a roadway layout diagram of a coal pillar-free recovery method in a coal mine of the present invention. Ventilation boreholes are arranged along the edge of the goaf 1, which can avoid and weaken the influence of fixed support pressure, and replace the reserved roadway and the roadway driving along the goaf. Including the following processes:
[0018] 1. Retain coal pillars: In order to avoid the influence of greater support pressure in the lower section of the track roadway, section coal pillars 3 should be retained. Because the retained section coal pillars will eventually be recovered, in order to facilitate roadway maintenance and coal The column size can be as large as 25~30m;
[0019] 2. Drilling along the goaf: 1 to 3 circular holes with a diameter of 1000mm are constructed along the goaf edge of the mined working face at th...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap