Exploration of the Laoyachen fault,Zhengzhou of China,and its activity investigation;

In order to find out the location,characteristics and activities of the Laoyachen Fault in Zhengzhou,the high-resolution shallow seismic P and S wave survey profiling across the Laoyachen Fault was carried out at the end of 2006,and different seismic sources along with combinations of diverse observation geometries with different parameters were used.

In order to find out the location, characteristics and activities of Zhengzhou Laoyachen fault, the shallow seismic surveys at different exploration depths that are across Laoyachen fault in northern area of Zhengzhou city, were carried out in 2006.

Based on the research on relationship between Mangshan scarp and Laoyachen fault,and according to interpretation of remote sensing images,middle-shallow layer seismic detecting and comparison of joint drillings,measureme.

The criterion on determining main roof in breaking zone and its application to the shallow seam;

The Laoyaling copper ore deposit is a typical stratiform ore deposit in the mid-lowerarea of Changjiang (Yangtze) River, Tongling, Anhui Province, which is characterized bythat it is far away from plutonic rocks and hosted in Permian calcareous-silicalites.