These machines can cut clean through rocks, sometimes along with creating concrete shields around the bored tunnels. The tunnel boring machine market is largely driven by the increase in spending on road and railway infrastructure. Countries such as China, Japan, Italy, South Korea, Norway, and Germany have vast tunnel networks.
Workers celebrate the completion of the tunnel boring machine (TBM) Caiyun in Kunming, capital of Southwest China's Yunnan province, Aug 1, 2017. The Chinese made TBM, which has a 9.03-meter cutter head, was completed in Kunming on Tuesday and it will be used to drill a railway tunnel in the province.
There are 2,290 tunnel boring machine suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Turkey, and South Korea, which supply 99%, 1%, and 1% of tunnel boring machine respectively. Tunnel boring machine products are most popular in Domestic Market, Mid East, and Southeast Asia.
Jul 12, 2012 · Video courtesy of CDM/HMM Joint Venture - For engineering enthusiasts and anyone who's interested in the mechanics of siphon construction, this animation shows exactly how the 110-ton, 300-foot-long tunnel boring machine will drill a distance of nearly two miles, 100 feet beneath the New York Harbor seabed.
A tunnel boring machine (TBM) is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata. They may also be used for micro tunneling. In Japan and China, The machines used for soil are called shield tunneling machines and machines used for hard rock are called tunnel boring machine.