unconfined water meaning in English
地下水
非承压地下水
非承压水
自由地下水；无压地下水
Examples
- At the meantime , the rock mass may alternate between loading and unloading and it exists in certain kind of liquid , such as surface water , unconfined water , confined water etc for its intrinsic crannies . the practical rock mass concerned project must solve the key stability pr oblem after the understanding of the complicated mechanical characteristic and the deformation trends to guide the following project design and construction for the demand of security , economy , feasibility and validity . however , the intrinsic nonlinearness and complexity of the engineering rock mass become the main difficulty to predict the stability and deformation , the corresponding structure design must ensure enough safety with all the determinate or random force combination , so a model without the geometry distortion and constitutive equation warp is necessary to be built for the quantificational analysis of practical structure ' s stress , for the simulation of the real process and for the determinate evaluation system and optimization
由于实际工程岩体其固有的非线性和复杂性，使得求解对应的诸如其稳定性、变形等问题面临较大的困难，而有关的工程结构的设计必须保证该结构在外来因素的作用下具有足够的安全度、经济性和合理性，这必然要求对岩体及其工程结构的受力与变形有一套量化评判体系和优化技术，抓住实际工程问题的本质特征并建立可行的符合几何仿真、本构仿真、受力仿真、过程仿真四原则的求解模型，通过该模型的数值模拟成果来指导岩体工程的设计、施工及运营、管理；而岩体结构面的存在使得基于传统连续介质力学理论的理论分析和数值模拟面临巨大的挑战，物理模拟的试验周期和成本也大大增加，而岩土体工程问题则成为典型的数据有限、了解程度有限类问题，这类问题的解决需要综合应用理论分析、经验判断、物理模拟和数值模拟等方法，数值模拟可以完成目前许多技术手段无法完成的实验，如参数控制，复杂条件下的边界条件的处理，同时数值模拟具有高可重复性，且数值模拟的成本和人力开销等远低于物理模拟，因此研究岩土体工程问题的流形元数值模拟方法是一项具有理论和实际工程应用价值的重要课题。