Pingcha gold deposit is a Sb-Au of rich in sulphide, controlled by the E-W secondary fracture and alteration zone and being small in scal but high in grade.
靖州平茶金矿为多硫化物型锑金矿床，矿化受近东西向次级断裂和蚀变带控制，矿床规模小，但品位高。
2
Based on the fractal characteristic of concrete material, the relation between fracture toughness and height of crack zone is analyzed.
根据混凝土材料裂纹的分形特性，分析了混凝土的断裂韧度与裂纹带高度之间的变化关系。
3
Then the direction offracturezone can be determined by making both X, Y-component detection in data acquisition and coordinate revolution in data processing.