Skip-mining type wangeviry stope branch roadway filling and coal mining method
US10012080B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2014 |
| Grant date | Jul 3, 2018 |
| Priority date | — |
| Expiry date | Jan 29, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21C41/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A transportation main roadway and stope branch roadways are arranged by adopting a wangeviry coal mining method. A plurality of stope branch roadways are divided into multiple mining stages, based on which the stope branch roadways are skip-mined; and coal pillars are not reserved among the stope branch roadways. The transportation main roadway is a main transportation channel, and the stope branch roadways are coal mining roadways. All the stope branch roadways are sequentially stoped in a skip-mining manner according to the designed mining sequence and are sequentially and timely filled. The coal never stoped or the filled stope branch roadways is/are used as supports for controlling roofs at the two sides of the stope branch roadways, and the stope branch roadways are sequentially stoped according to a plurality of mining stages, and finally the coal pillar-free mining is realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.