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Title:
ANTI-SEEPAGE CONCRETE PROGRESSIVE STRUCTURE FOR UNDERGROUND GOAF AND CONSTRUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/187999
Kind Code:
A1
Abstract:
Disclosed is an anti-seepage concrete progressive structure for an underground goaf. The structure solves the problem of the pollution of underground water by chemicals and harmful chemical components in tailings. In the anti-seepage concrete progressive structure, an anti-seepage concrete base layer (2) is laid at the bottom of a goaf (1), a plurality of layers of anti-seepage bodies (3) are arranged on an inner side wall of the goaf (1) from bottom to top, and an anti-seepage concrete wall (4) is arranged at an access to the goaf (1). A construction method for the anti-seepage concrete progressive structure for an underground goaf is further disclosed. The construction method comprises the following steps: pumping anti-seepage concrete to the bottom of a goaf (1) to form an anti-seepage concrete base layer (2); pumping quick-setting anti-seepage concrete along the lower end of an inner side wall of the goaf to form a first layer of anti-seepage bodies (3), and then filling a first layer of tailings (5); pumping a second layer of quick-setting anti-seepage concrete along the inner side wall of the goaf, and filling a second layer of tailings (5); repeating the operations in this way; and pouring an anti-seepage concrete wall (4) at an access to the goaf.

Inventors:
CHEN TIANLEI (CN)
LI YING (CN)
WANG PEIXIN (CN)
Application Number:
PCT/CN2021/079554
Publication Date:
September 15, 2022
Filing Date:
March 08, 2021
Export Citation:
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Assignee:
LANZHOU ENGINEERING & RES INSTITUTE OF NONFERROUS METALLURGY CO LTD (CN)
International Classes:
E02D31/04; E21D11/38; E21F15/00
Foreign References:
CN111810229A2020-10-23
CN212376689U2021-01-19
CN107237651A2017-10-10
CN105332392A2016-02-17
CN104088263A2014-10-08
CN101603429A2009-12-16
DE3841679A11990-06-13
Attorney, Agent or Firm:
WUXI ZHIMAI INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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