Projects(51274252,51074180)supported by the National Natural Science Foundation of China;Project(2013CB035401)supported by the National Basic Research Program of China;Projects(2012AA041801;2012AA041803)supported by the High-Tech Research and Development Program of China
In order to study rock breaking characteristics of tunnel boring machine(TBM) disc cutter at different rock temperatures,thermodynamic rock breaking mathematical model of TBM disc cutter was established on the basis o...
Project(51074180)supported by the National Natural Science Foundation of China
A new impregnated diamond bit was designed to solve the slipping problem when impregnated diamond bit was used for extra-hard, compact, and nonabrasive rock formation. Adding Si C grits into matrix, Si C grits can eas...
Project(51074180) supported by the National Natural Science Foundation of China;Project(2012AA041801) supported by the National High Technology Research and Development Program of China;Project(2007CB714002) supported by the National Basic Research Program of China;Project(2013GK3003) supported by the Technology Support Plan of Hunan Province,China;Project(2010FJ1002) supported by Hunan Science and Technology Major Program,China
In order to improve the strength and stiffness of shield cutterhead, the method of fuzzy mathematics theory in combination with the finite element analysis is adopted. An optimal design model of structural parameters ...