公开(公告)号：US20170335687A1

公开(公告)日：2017-11-23

申请号：US15245143

申请日：2016-08-23

Applicant: POWERCHINA HUADONG ENGINEERING CORPORATION LIMITED

Inventor： Wenhua CHEN ,  Jing HOU ,  Jie ZHANG ,  Yangchun DAI ,  Kewei CUI

IPC: E21D9/01 ,  E21D9/10 ,  E21D9/00

CPC classification number: E21D9/01 ,  E21C45/00 ,  E21D9/001 ,  E21D9/1066 ,  E21D11/003

Abstract: The present invention relates to an apparatus for soil disturbance at the back of a shield tunnel, wherein: the apparatus is formed by a fitting I and a fitting II connected by means of three bolts that form equal angles; the fitting I is a short circular pipe; an end surface of a fitting end of the fitting I is provided with a water passage; a pipe wall of the pipe is provided with 2-8 water spouts; the fitting II is a long circular pipe whose inner and outer diameters are consistent with those of the fitting I; a fitting end of the fitting II is provided with two O-shaped water stop rings; a pipe wall of the fitting II is provided with three water inlets that form equal angles and are in communication with the water passage of the fitting I.