The determination of underwater rock covering thickness using engineering analogy experience method

For the Changjiang River and the Jialingjiang River tunnels to be built in Chaotianmen,Chongqing,through the engineering analogy method and the three-dimensional elasto-plastic finite element numerical modelling,the reasonable minimum rock overlying thickness is suggested.

They mainly included the project analogy method and numerical analytical method.

The engineering analogy method as a kind of conceptual design method was used widely in the engineering design,due to the paticularity of its reasoning system,it s difficult to establish operation step of this method.

Based on the practice experience the optimization design of the slope is carried out by using engineering analogy method, counter-algorithm and calculation comparison.

Based on the practical engineering project in Luoshan Mine,a new determination method for metal mine movement scope was proposed with the traditional engineering analogy method or numerical simulation method combined with 3D modeling technology.

A programmed design of engineering geological analogy method is introduced based on a combined arithmetic between BP neural network and Genetic Algorithm,which can automatically establish a high-nonlinear mapping relation.