Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
HYBRID TUNNEL BORING MACHINE
Document Type and Number:
WIPO Patent Application WO/2022/147881
Kind Code:
A1
Abstract:
A hybrid tunnel boring machine, comprising a cylindrical external rack (1). The position, located at one end of the boring direction, of the external rack (1) is movably connected to a cutting cutterhead (2). A first partition plate (3) is vertically mounted behind the cutting cutterhead (2), and a second partition plate (9) is vertically mounted behind the first partition plate (3). A cavity between the first partition plate (3) and the cutting cutterhead (2) forms a slurry storage chamber (4). A material blocking inclined plate (6) is mounted at the rear position of the lower portion of the first partition plate (3), and a slurry inlet pipe (7) and a slurry discharge pipe (8) are separately connected to the rear portion of the material blocking inclined plate (6). A cavity is formed between the material blocking inclined plate (6) and the first partition plate (3), and the cavity communicates with the slurry storage chamber (4). The hybrid tunnel boring machine integrates the functions of a slurry shield and a soil pressure shield, is high in mechanical automation degree and high in construction speed, can keep the stability of overall operation of the cutting cutterhead to guarantee the stability of excavation surface soil, can adjust the speed of discharging soil slag and slurry and the shield boring speed according to the change of soil pressure and water pressure, reduces the probability of stratum deformation, and is suitable for tunnel excavation of hard rock and soft soil stratums.

Inventors:
HONG KAIRONG (CN)
SI JINGZHAO (CN)
FENG HUANHUAN (CN)
RAN HAIJUN (CN)
GUO WEISHE (CN)
CHANG XIANG (CN)
MA LIANG (CN)
LI FENGYUAN (CN)
SONG FALIANG (CN)
ZHANG BING (CN)
YANG LUWEI (CN)
Application Number:
PCT/CN2021/075576
Publication Date:
July 14, 2022
Filing Date:
February 05, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
CHINA RAILWAY TUNNEL GROUP CO LTD (CN)
International Classes:
E21D9/08; E21D9/12
Foreign References:
CN104879133A2015-09-02
CN1391054A2003-01-15
CN102199915A2011-09-28
CN202560238U2012-11-28
JP2000234495A2000-08-29
JP2006070685A2006-03-16
Attorney, Agent or Firm:
BEIJING JINZHIPUHUA INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
Download PDF: