关键词: 隧道, 结构面, 块体理论, 蒙特卡罗法, GeoSMA3-D, 关键块体

Abstract: With the field survey done for structural planes in rock mass as the geological conditions for tunnel engineering, the 3-D model of structural planes and relevant network simulation were investigated. The two searching techniques for key blocks were discussed via simulating the geometric features of real rock mass in according to the network graph of discontinuous structural planes, i.e. the methods to search randomly the blocks in accordance to either the structural plane parameters determined or the network graph of jointer planes. Then, introducing the probability theory to analyze the key blocks in rock mass dissected by joints and the Monte Carlo method with object-oriented programming, a 3-D simulation modeling technique was given by computer on the basis of statistical for discontinuous planes in rock mass theory. Thus, a block searching computing model adaptable to engineering was set up to implement the computer searching for key blocks with 3-D display and image rotation.