Performance Evaluation of Critical Geosystems Using Multiscale Methods

世界各国依靠各种岩土基础设施进行防洪、蓄水和水力发电。这些关键的地质系统通常涉及与结构元素相互作用的多孔介质，例如溢洪道墙、与出水口工程相关的管道或支撑堤坝的相邻重力结构。在洪水期间的高水位下，或在没有明显触发事件的正常运行条件下，堤坝或堤坝可能会因内部侵蚀而崩溃。后者可归因于各种因素，包括现有树根的腐烂或入侵的野生动物活动，导致堤坝或堤坝内的局部空洞保持隐藏，直到地球结构的安全受到威胁。由于这些因素，全球每年因土质结构失效或损坏而造成的平均成本超过数十亿美元。在地球系统中，土壤退化和与侵蚀有关的破坏造成的负面影响并不局限于土壤结构。现有结构下面或附近的管道泄漏也会导致突然的、未被注意到的故障。

Countries around the world rely on various geotechnical infrastructure for flood control, water storage and hydroelectric power generation. These critical geosystems typically involve a porous media interacting with structural elements such as spillway walls, conduits associated with outlet works or adjoining gravity structures supporting the embankment. The failure of levees, or embankment dams by internal erosion may occur under high water levels during flood events or under normal operating conditions without an apparent triggering event. The latter can be attributed to various factors including decay of existing tree roots or invasive wildlife activities that result in local voids within levees or embankment dams that remain concealed until the safety of the earth structure is jeopardized. The worldwide average cost of failed or damaged earthen structures due to these factors exceeds billions of dollars per year. The negative impact of soil deterioration and erosion-related failure in geosystems is not limited to earth structures. Leaking pipes under or near existing structures are also known to cause sudden and unnoticed failure.