Pipe-jacking tunnel face inrush-preventing grouting toughening material and permanent pipe protection process
The invention belongs to the field of underground engineering, and particularly relates to an anti-inrush grouting toughening material for a pipe-jacking tunnel face and a permanent pipe protection process. The toughening material comprises a soft soil curing material and a shaped composite phase ch...
Saved in:
Main Authors | , , , , , , , , , , , , |
---|---|
Format | Patent |
Language | Chinese English |
Published |
23.07.2024
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The invention belongs to the field of underground engineering, and particularly relates to an anti-inrush grouting toughening material for a pipe-jacking tunnel face and a permanent pipe protection process. The toughening material comprises a soft soil curing material and a shaped composite phase change material; the soft soil curing material comprises slag, carbide slag, phosphogypsum, an alkali activator and water; the shaped composite phase change material comprises modified fly ash and a binary composite phase change material, and the binary composite phase change material is composed of methyl laurate and myristic acid. After the material is prepared, a grouting pump of a pipe-jacking tunneling machine is used for pumping the anti-inrush grouting toughening material to the front part of a cutterhead of the tunneling machine for solidifying soft soil and enhancing the stability of a broken stratum of a tunnel face of a pipe-jacking tunnel, a toughening anti-seepage area similar to a curtain is formed in f |
---|---|
Bibliography: | Application Number: CN202410832244 |