According to the complex geological phenomena in rock and soil medium and the features of strata, a three dimensional strata model is established.
根据岩土介质中复杂的地质现象及其地层的层状展铺特性，建立了三维地层模型。
2
Concrete cutoff wall presents a bigger safety and reliability in aspects of the reinforcement of reservoirs' loss, and foundations' cutoff in large-medium hydropower stations' deep overlying strata.
Among all sequence strata of exploration target, it mainly developed medium-coarse clastic arkose in high water system, which overlies and underlies the primary sequence interface as well.