Shield construction method for small-clear-distance tunnel

The invention discloses a shield construction method for a small-clear-distance tunnel. The shield construction method comprises the steps that firstly, a preceding tunnel and a following tunnel are determined; step 2, reinforcing the soil body of the preceding tunnel in a small clear distance range...

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Bibliographic Details
Main Authors XIAO WEIZHI, LUO YONGJIE, HUANG CHUNLAI, WANG DONGYANG, WU JICHANG, BAI CONGMIN
Format Patent
LanguageChinese
English
Published 05.04.2022
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:The invention discloses a shield construction method for a small-clear-distance tunnel. The shield construction method comprises the steps that firstly, a preceding tunnel and a following tunnel are determined; step 2, reinforcing the soil body of the preceding tunnel in a small clear distance range, wherein the reinforcing comprises ground soil body reinforcing and in-tunnel grouting reinforcing; when the ground soil body is reinforced, for the tunnels with the vertical spatial positions, the soil body between the preceding tunnel and the following tunnel is reinforced through stirring piles or jet grouting piles or grouting; for the tunnels of which the spatial positions are parallel, reinforcing a soil body between the preceding tunnel and the following tunnel by adopting isolation piles; thirdly, after shield tunneling of the preceding tunnel is completed, a walking type hydraulic supporting trolley is installed in the preceding tunnel; and 4, when the following tunnel shield is tunneled to the small clea
Bibliography:Application Number: CN202111617034