Numerical modeling of ground movement and soil mobility

拟公开发布的研究摘要：拟发表的研究重点是发展分析土壤变形和土壤运动的计算机模拟能力。地面运动和土壤运动是岩土工程中的重要课题。对于许多工程项目来说，小的和大的运动都是感兴趣的，有时甚至是至关重要的。土壤的大运动和快速运动，如滑坡和泥石流，威胁着人们的安全，并造成财产损失。滑坡和泥石流可能导致重大的财产损失和生命损失。因此，已采用定量风险分析(QRA)来确定滑坡和泥石流的潜在威胁。为了有效地应用QRA，有必要以合理的精度和较高的可靠性分析土壤移动和土壤移动性。除了管理自然灾害，地面移动计算对于a)采矿业，在确保矿山安全，材料处理，b)采掘业，如石油和天然气，C)任何使用地面支撑结构或正在进行改变地面条件的工作的人。这项研究是为了发展和改进现有的用于分析土壤变形和土壤流动性的本构模型，并开发用于分析土壤流动性的数值技术。该数值模型将能够模拟土壤的运动，并计算水流的速度、距离和数量。该模型基于连续介质和不连续介质相结合的方法，这将使我们能够使用连续介质模型来得出土壤的本构描述和计算大的土壤移动。

Summary of proposed research for public release:The proposed research is focused on the development of computer modeling capabilities in analyzing soil deformation and soil movement.  Ground movement and soil mobility are important subjects in geotechnical engineering.  Small and large movements are of interest, and sometimes crucial, for many engineering projects.  Large movement and fast mobility of soil, such as landslide and debris flow, threaten the safety of people and cause damage to properties.  Landslide and debris flow can lead to significant property damage and loss of life.  As a result, a quantitative risk analysis (QRA) has been adopted to determine the potential threats due to landslide and debris flow.  In order to apply QRA effectively, it is necessary to analyze soil movement and soil mobility with reasonable accuracy and  reliability.Beside managing natural hazards, ground movement calculation is of interest to the a) mining industry, in ensuring the safety of mine, handling of materials, b) the extraction industry, such as oil and gas, in stability of well bores and c) anyone who uses the ground to support a structure or is carrying out work that changes the ground conditions.This research is to develop and make improvements in existing constitutive models for analyzing soil deformation and soil mobility, and to develop numerical techniques for analyzing the mobility of soils.  The numerical model will be able to simulate movement of soils and calculate the velocity, distance and quantity of flow.  The model is based on a combined continuum and discontinuum approach which will enable us to use continuum models for arriving at the constitutive description of soils and for calculation of large soil movements.