METHOD FOR TREATING TUNNEL COLLAPSE BY USING PAVILION-TYPE SUPPORT

WIPO Patent Application WO/2021/179507

A1

A method for treating tunnel collapse by using a pavilion-type support, which relates to the technical fields of tunnels and underground engineering. The method is suitable for the situation in which a collapsed cavity is relatively stable and the collapsed cavity has a tall height and is not prone to contact the roof. The method comprises the following steps: leveling a collapsed body and moving a pavilion-type support to below a collapsed cavity; using hydraulic support columns (5) to lift a shield plate (2) until the lower edge of the shield plate exceeds the outer contour line of a tunnel primary support arch frame; connecting a bottom column (4) under a stand column (3) and inserting same into a base plate (22); if the hydraulic support columns are retracted, the stand column, the bottom column, the base plate and the hydraulic support columns jointly bear the load transmitted by the shield plate; installing and connecting the primary support arch frame (24) under the protection of the shield plate, welding the intersecting point between the stand column and the adjacent primary support arch frame, and cutting out the stand column in the primary support arch frame; after a single hydraulic support column is withdrawn, the load of the shield plate is smoothly transferred from the pavilion-type support to an initial support scaffold (25), quick-setting concrete is sprayed on a grid arch frame so as to form a closed housing, and a filling material is pumped to fill the space of the collapsed cavity. The described method has the advantages of low requirements for the lifting height of hydraulic support columns, safe construction and so on.

WANG HAILIANG (CN)
ZHANG XUANSHAN (CN)
LI WEIZHOU (CN)
YU FU (CN)
HE WENSHENG (CN)
LIU QUANWEI (CN)
LI CHUAN (CN)
WANG ZHENBIAO (CN)
KONG BIAO (CN)
MENG XIANGBAO (CN)
XIN LIN (CN)
ZHANG YONG (CN)
ZHANG WENMING (CN)
HOU LIDE (CN)
XIONG JIUFANG (CN)
MENG XIANGHUI (CN)
JIANG SHIBIN (CN)

PCT/CN2020/102909

September 16, 2021

July 20, 2020

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UNIV SHANDONG SCIENCE & TECH (CN)
CHINA COMMUNICATIONS CONSTRUCTION CO LTD (CN)
QINGDAO WEST COAST RAIL TRANSIT CO LTD (CN)
QINGDAO FIRST MUNICIPAL ENG CO LTD (CN)
HEBEI FEIPU ENVIRONMENTAL PROTECTION TECH CO LTD (CN)

E21D19/04

CN111365043A	2020-07-03
CN111365044A	2020-07-03
CN206495682U	2017-09-15
CN106545351A	2017-03-29
CN205895269U	2017-01-18
CN104989434A	2015-10-21
JP2002242597A	2002-08-28
GB1336578A	1973-11-07

QINGDAO ZHIDILINGCHUANG PATENT AGENCY CO., LTD (CN)

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