Based on in - situ nonitoring data of a high filling channel in Middle Route Project of South - to - North Water Di-version,a nodel with continuous napping between input and output for channel settlenent and soil nechanical paraneters is es-tablished by using nultilayer feed - forward neural networks and back analysis of BP neural network. The nodel is applied to cal-culation of soil nechanical paraneters by defornation back analysis. The results show that the relative error of cohesion and fric-tion angle is slight;however the conversion error of conpression nodule is increasing with filling elevation. The conclusions pro-vide theoretical support for settlenent calculation of high filling channel.

The dynamic allocation and optimal balance of earth-rock is the key to the construction of large earth-rock project.Based on linear programming of operations research and considering the total cost of earth-rock allocation as objective function,the mathematical model of earth-rock dynamic allocation was established,which considered the qualitative and quantitative constraints and the deployment volume of materials in the deployment process as decision variables.The earth-rock allocation process was simulated in the engineering of Longbeiwan Faceplate Rock Fill Dam,Based on it,the outcome data of final material allocation was got,which achieved the overall optimization of earth-rock balance and allocation.At the same time,the feasibility of the construction plan was verified,and a reliable decision support for the construction organization design of earth-rock allocation was provided.

Aiming at the topography features of Chengzhuang Coal Mine Areas in Shanxi Jincheng,the basic theory of the geostress formation was considered.Combined with the geostress measured data,the 3D calculation model was established.Through the method of multiple liner regression analysis,and all the regression coefficients of the basic stress field could be worked out.Finally,the linear superposition was conducted,and the initial geostress field of coal mine areas was inversed accurately.The inversion results showed that the stress field of this region was characterized both dominated by the self-weight stress and comprehensively effected by the horizontal tectonic stress field.

This paper makes the simulation calculation of the seepage and stability of a tailing pond with finite element analysis method,and obtains the distribution regularities of underground seepage,the locations of saturation lines and the safety factors of tailing dam under two working conditions of the operation at normal water-level and the operation at flood-level,and based on the results of seepage and stability calculation,evaluates the safety and stability of the tailing pond.