Title:
CONSOLIDATED SOLID STRIP BACKFILL MINING METHOD FOR COAL MINE
Document Type and Number:
WIPO Patent Application WO/2018/045633
Kind Code:
A1
Abstract:
A consolidated solid strip backfill mining method for a coal mine, combining cemented backfilling and solid backfilling, comprising: preparing a cemented backfilling material at a ground backfilling material preparation station (2); pumping the prepared cemented backfilling material by using a backfilling pump (12) into a plurality of strip-shaped pulling nets (5) on a gob at the tail of a backfilling hydraulic support (4) on a coal wall to form a plurality of strip cemented retaining walls (10); feeding a solid material (1) to an underground gangue chamber (16) by means of a vertical feeding shaft (3); conveying, by means of an underground transport system, the solid material (1) to the gob (8) for backfilling the coal wall; transferring, by using a high-position self-moving backfilling material transfer conveyor (6), the solid material (1) to a tamping scraper conveyer (7) suspended on a tail beam of the backfilling hydraulic support (4); unloading the solid material into a peripherally closed space formed by the cemented retaining walls (10); and tamping the solid material by the aid of the tamping scraper conveyor (7) to implement strip backfilling. The consolidated solid strip backfill mining method for a coal mine can release compressed coal under buildings, railways and water, increase the coal mining rate of coal mines, implement partial backfilling on a coal wall, and improve output of the coal wall.
Inventors:
ZHANG JIXIONG (CN)
FANG KUN (CN)
AN BAIFU (CN)
HAN XIAOLE (CN)
YAN HAO (CN)
QUAN KAI (CN)
FANG KUN (CN)
AN BAIFU (CN)
HAN XIAOLE (CN)
YAN HAO (CN)
QUAN KAI (CN)
Application Number:
PCT/CN2016/106616
Publication Date:
March 15, 2018
Filing Date:
November 21, 2016
Export Citation:
Assignee:
UNIV CHINA MINING (CN)
International Classes:
E21C41/18
Foreign References:
| CN103104287A | 2013-05-15 | |||
| CN202810855U | 2013-03-20 | |||
| CN101586460A | 2009-11-25 | |||
| CN102230396A | 2011-11-02 | |||
| RU2277171C1 | 2006-05-27 |
Attorney, Agent or Firm:
NANJING RUI HONG PATENT AND TRADEMARK OFFICE LLP (CN)
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