Guiding type miniature pipe-jacking construction method
US11346218B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2021 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Oct 29, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L1/06
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Provided is a guiding type miniature pipe-jacking construction method, comprising the following steps: in an originating well, perforating an operation hole in an inner wall of the originating well with a trepanning apparatus; mounting a laser orientation instrument and a laser guided drill bit, driving a guide bar connected with the laser guided drill bit into the opened operation hole with a thrusting apparatus, and driving the guide bar into a soil mass with the thrusting apparatus; jacking a plurality of mud discharging pipes following the guide bar successively into the soil mass with the thrusting apparatus; jacking a plurality of mud discharging screw rods into the mud discharging pipes with the thrusting apparatus; jacking a pipe-jacking machine head following the mud discharging pipes into the soil mass with the thrusting apparatus, a cutter head on the pipe-jacking machine head rotating to drive the mud discharging screw rods to rotate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.