Title:
WASTE ROCK AND DRY TAILINGS COMBINED TREATMENT METHOD FOR OPEN PIT
Document Type and Number:
WIPO Patent Application WO/2023/109378
Kind Code:
A1
Abstract:
Disclosed is a waste rock and dry tailings combined treatment method for an open pit. The method comprises: backfilling the bottom of an open pit with a waste rock layer (2), conveying dry tailings, which have been subjected to dewatering and filter pressing, onto the waste rock layer (2), compacting the dry tailings to form a dry tailings layer (3), and alternately stacking the waste rock layer (2) and the dry tailings layer (3); laying a primary dam (4) above a stack of the waste rock layers (2) and the dry tailings layers (3), and stacking, in an inverted arrangement manner, a dry tailings pile (3') layer by layer on the upstream of the primary dam (4); and stacking a waste rock pile (10) layer by layer at the periphery of the dry tailings pile (3') stacked in an inverted arrangement manner, until a top surface of a region of the waste rock pile (10) is connected to a top surface of a region of the dry tailings pile (3'); laying a drainage prism (5) at the periphery of the waste rock pile (10); and constructing an inverted layer (6) between the waste rock pile (10) and the drainage prism (5). The method can reduce the risk of secondary geological disasters such as landslides and debris flows caused by the instability of an open pit slope, avoid safety accidents caused by tailings leakage and dam breaking, and achieve safe stacking and storage of waste rock and tailings.
Inventors:
LI TAO (CN)
ZHOU BIN (CN)
LI LU (CN)
LIANG CHANGHONG (CN)
ZHOU BIN (CN)
LI LU (CN)
LIANG CHANGHONG (CN)
Application Number:
PCT/CN2022/130710
Publication Date:
June 22, 2023
Filing Date:
November 08, 2022
Export Citation:
Assignee:
WANBAO MINING LTD (CN)
International Classes:
E21F15/06; E21F15/00; E21F16/00; E21F17/00
Foreign References:
| CN114294056A | 2022-04-08 | |||
| CN103216239A | 2013-07-24 | |||
| CN105040711A | 2015-11-11 | |||
| CN106894817A | 2017-06-27 | |||
| CN104653224A | 2015-05-27 | |||
| CN108941146A | 2018-12-07 | |||
| US20200300090A1 | 2020-09-24 | |||
| US10815631B1 | 2020-10-27 |
Attorney, Agent or Firm:
CHINA NORTH INDUSTRIES GROUP CORPORATION PATENT CENTER (CN)
Download PDF: