Title:
METHOD FOR PASSING THROUGH RIVER CHANNEL AND LAYING CABLE BY USING HORIZONTAL DIRECTIONAL DRILLING TECHNOLOGY
Document Type and Number:
WIPO Patent Application WO/2022/001310
Kind Code:
A1
Abstract:
Disclosed are a method for passing through a river channel and laying a cable by using horizontal directional drilling technology. The steps of the method comprise: S1: calculating a first steel pipe top elevation and a second steel pipe top elevation according to a lowest navigable water level, a planned channel water depth, a riverbed sapping thickness, a riverbed bottom elevation and a pre-embedded depth, and selecting the smaller of the two top elevations as the minimum value of an actual steel pipe top elevation; S2: selecting steel pipes for cable laying and the number thereof, and MPP pipes built into the steel pipes and the number thereof, and determining a passing-through path of a horizontal directional drill according to the minimum value of the actual steel pipe top elevation, the radii of curvature of the steel pipes, a stratum through which the steel pipes pass, and a ground entry point and a ground exit point of the horizontal directional drill; S3: calculating, according to the passing-through path, the traction and lateral pressure during cable laying, and determining whether a construction requirement is met; and S4: forming a guide hole in a river channel by using the horizontal directional drill, pulling the steel pipes back, arranging the MPP pipes to pass through the steel pipes, and laying a cable. Precise parameter calculation is carried out, and the laying of a cable between transformer stations on two sides of a river channel is then completed by means of steel pipes passing through the river channel. The project cost is low, the construction period is short, and the implementation is simple.
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Inventors:
YANG JIANWEI (CN)
YAO ZIYONG (CN)
ZHANG ZHIYONG (CN)
LI YIDONG (CN)
YU HONGBO (CN)
HE XULIANG (CN)
PEI DAWEI (CN)
WANG XUXIANG (CN)
LIAN JIYE (CN)
LIANG YONGQUAN (CN)
WANG CHONGKANG (CN)
YAO ZIYONG (CN)
ZHANG ZHIYONG (CN)
LI YIDONG (CN)
YU HONGBO (CN)
HE XULIANG (CN)
PEI DAWEI (CN)
WANG XUXIANG (CN)
LIAN JIYE (CN)
LIANG YONGQUAN (CN)
WANG CHONGKANG (CN)
Application Number:
PCT/CN2021/088858
Publication Date:
January 06, 2022
Filing Date:
April 22, 2021
Export Citation:
Assignee:
GUANGDONG SHUNDE POWER DESIGN INST CO LTD (CN)
International Classes:
H01R43/00; H02G1/10; H02G9/06
Foreign References:
| CN112103852A | 2020-12-18 | |||
| CN202260351U | 2012-05-30 | |||
| JP2018022563A | 2018-02-08 | |||
| CN102953683A | 2013-03-06 | |||
| CN110778272A | 2020-02-11 | |||
| CN104533289A | 2015-04-22 | |||
| CN109027420A | 2018-12-18 | |||
| CN102522723A | 2012-06-27 |
Attorney, Agent or Firm:
GUANGZHOU RUNHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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