Numerical Simulation of Grouting Thickness Applied to Floor Heave in Soft Rock Highway Tunnel
XU Songji
WANG Yukui
Abstract：To analyze the reason that floor heave occurs,a highway tunnel located among the eroded sedimentary rocks in low or medium mountains is overhauled. FLAC3D is used to simulate the changes in plastic zones of surrounding rocks with different thickness of arch. The harms to the tunnel is analyzed to reduce thickness of inverted arch and the feasibility of full-face tunnel grouting is verified. Through the numerical simulation of different thickness of grouting circles, the reasonable thickness of grouting circle is proposed, which provides a technical reference for construction and reinforcement.
Keywords：floor heave of the inverted archFLAC3 Dgrouting circle
Publication Date：2016-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 60-66 )