Numerical modeling of ground movement and soil mobility

公开发布的拟议研究摘要：拟议研究的重点是开发分析土壤变形和土壤运动的计算机建模能力。 地表移动和土体流动性是岩土工程中的重要课题。 对于许多工程项目来说，小的和大的运动都很重要，有时甚至是至关重要的。 滑坡、泥石流等土体运动量大、流动速度快，威胁着人身安全，造成财产损失。 滑坡和泥石流可导致重大财产损失和生命损失。 因此，定量风险分析（QRA）已通过确定潜在的威胁，由于滑坡和泥石流。 为了有效地应用QRA，必须以合理的精度和可靠性分析土壤移动和土壤流动性。除了管理自然灾害外，地表移动计算对a）采矿业，在确保矿山安全，材料处理，B）开采业，如石油和天然气，井眼的稳定性和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。本研究旨在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，并发展分析土壤流动性的数值技术。 数值模型将能够模拟土壤的运动，并计算流速，距离和流量。 该模型是基于一个相结合的连续和不连续的方法，这将使我们能够使用连续模型来达到本构描述的土壤和计算大的土壤运动。

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.