Papers by Author: Hai Yu Chen

Abstract: Because of steel cord conveyor belt with high load operating and complex conditions of coal mine, it is prone to cause conveyor belt horizontal rupture. It will bring tremendous hazards for coal mine production. Twelve time domain features of joints signals, broken wires signals and abrasion signals for steel cord conveyor belt were extracted with weak magnetic detection system. The algorithm of combining rough set based on information entropy with multi-classbased on binary tree was proposed to classify the three categories signals. The experiment results show that rough set reduction algorithm based on information entropy can effectively achieve feature reduction and classification speed of multi-classclassification algorithm based on binary tree can be improved by rough set feature reduction without changing classification accuracy.

Abstract: Aimed at stability against up-sliding that the dam engineers have concerned closely, in this paper combining two models of arch dam, the analysis of 3-D finite element method has been carried out about shear of contact face between foundation and high arch dam, we concluded probability of stability against up-sliding along contact face between foundation and high double curvature arch dam was little, but the problem of stability against up-sliding at high single curvature arch dam was existed, so we should study its stability against up-sliding.