公开(公告)号：US20190153691A1

公开(公告)日：2019-05-23

申请号：US16028350

申请日：2018-07-05

Applicant: PowerChina Huadong Engineering Corporation Limited

Inventor： Wenhua CHEN ,  Guanye WU ,  Jing HOU

IPC: E02D3/10

Abstract: The invention relates to a device for soft soil foundation treatment by vacuum-membrane-free vacuum preloading and a treatment method. The device comprises includes several top plates for being laid on the surface of soft soil foundation and several vertical plates for being vertically driven into the soft soil foundation, wherein the vertical plates are driven against the symmetrical side edges of the top plates; the vertical plate has an inner chamber, the top surface of the vertical plate is provided with a vertical plate main-hole in communication with the inner chamber of the vertical plate, both sides of the vertical plate are provided with several vertical plate vacuum mini-holes in communication with the inner chamber of the vertical plate; the vertical plate main-hole is in communication with vacuum equipment. The invention is applicable to applicable to the field of geotechnical engineering techniques.

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.