In the Beijing Railway Station and Beijing West Railway Station underground diameter line construction, China Railway Tunnel Group adhere to scientific and technological innovation, to capture the cutter knives with the formation adaptive technology, settlement under precise control technology, tunneing slurry processing technology and compressed air discharge condition flare up Repair cutter tool technology, build the core technology with independent intellectual property rights system. This technique is like a four “lines”, he cracked the slurry shield under different formation conditions “dig move” “settle down”, “scheduled to go” “easy repair” technical problems.
Dig the move: the cutter knives and formation adaptive technology
Beijing Railway Station and Beijing West Railway Station shield tunneling underground diameter line facing a variety of geological and hydrological conditions in the western part of the temple area, to configure and can deal with a hardness greater than the uniaxial compressive strength of 300 kilograms per square centimeter of rock and particle size greater than 0.6 m Pebble Watery complex formation tool; Xuanwumen area in the middle, to adapt to clay, sand and gravel underwater configure complex formation tool; in the eastern sector, to configure fine sand clay adapt less water complex formation tool. Shield tunneling machine from the temple just tens of meters underground, they ran into dense super-hard formations such as concrete, configuration import tool have also helpless. It is like a drill bit in the wheel round and round, playing the volume can not be boring tool children forward.
It is understood that, for the import tool on the Beijing Geology “acclimatized” and wear faster real, the project put forward the concept of “three-dimensional cutting” to achieve a tool to configure all domestic, independent research and development of the surrounding shield machine blade and shield machine Tear knives have received the national utility model patents. They also developed a proprietary tool wear detection patented technology, the shield tunneling process automation tool wear detection.