灰色系统理论在岩土工程领域的许多方面已得到广泛的应用，并取得了一系列成果，但在地下工程中的应用成果尚少。
Grey system theory was applied extensively and had gained a series of achivements in geological engineering, but had only less achivements in underground engineering.
在介绍离散元法基本原理的基础上，着重对离散元法在岩土工程领域的应用现状作了叙述和分析，并对其发展趋势进行了探讨。
Firstly the fundamentals of DEM are introduced, and then its applications in geo-technical engineering are summarzied emphatically, and finally the development trends of DEM are discussed.
目前，在水利岩土工程许多领域的工程分析中引入了人工神经网络的应用。
Now, the application of artificial neural networks has been inducted to analyses in many instances of hydraulic and geotechnical engineering.
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