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Title:
CONFINED HIGH-STRENGTH CONCRETE SUPPORT SYSTEM APPLICABLE TO UNDERGROUND TUNNEL
Document Type and Number:
WIPO Patent Application WO/2018/006558
Kind Code:
A1
Abstract:
Disclosed is a confined high-strength concrete support system applicable to an underground tunnel, comprising: multiple confined concrete arches (14); an anchor (1-2); an anchor cable (1-1); and a prestressed concrete steel strand backfill system. All the confined concrete arches (14) support surrounding rock (1-3) in a tunnel. The confined concrete arches (14) are sequentially arranged, and the adjacent confined concrete arches (14) are connected by means of a longitudinal connection mechanism. In the supporting system, multiple wire meshes (31) are arranged at a surrounding rock side and a tunnel side. Concrete is injected over the support system and the wire meshes (31). The prestressed concrete steel strand backfill system comprises a prestressed concrete steel strand system and a filling material (5). The prestressed concrete steel strand system refers to steel strands (1-4) connecting the arches with the anchor and the anchor cable. The steel strands (1-4) sequentially pass through cable insertion holes of the arches and cable insertion holes of trays to form a continuous grid between outer edges of the arches and a surface of the surrounding rock, thereby connecting the arches, the anchor and the anchor cable. The filling material is filled in a space between each confined concrete arch and the surrounding rock, such that a force is uniformly applied to the confined concrete arch to generate a preset stress.

Inventors:
LI SHUCAI (CN)
WANG QI (CN)
JIANG BEI (CN)
LUAN YINGCHENG (CN)
SUN HUIBIN (CN)
QIN QIAN (CN)
YU HENGCHANG (CN)
YANG JUN (CN)
LU WEI (CN)
LI XIAOLIANG (CN)
ZENG ZHAONAN (CN)
PAN RUI (CN)
WANG LEI (CN)
XU YINGDONG (CN)
GAO HONGKE (CN)
ZNEG YANJUN (CN)
XU HONGBIN (CN)
Application Number:
PCT/CN2016/111551
Publication Date:
January 11, 2018
Filing Date:
December 22, 2016
Export Citation:
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Assignee:
UNIV SHANDONG (CN)
SHANDONG TIANQIN MINING MACHINERY EQUIPMENT CO LTD (CN)
International Classes:
E21D11/00; E21D21/00
Foreign References:
CN202882939U2013-04-17
CN101280684A2008-10-08
CN101749034A2010-06-23
JPH0868300A1996-03-12
Attorney, Agent or Firm:
JINAN SHENGDA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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