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地下水对平推式滑坡的作用机理分析 被引量:1
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作者 梁坤 李虎杰 李松 《化工矿物与加工》 CAS 2021年第1期20-23,55,共5页
平推式滑坡常见于四川盆地近水平砂泥岩互层地区,其启动动力主要由地下水提供。前人的研究主要考虑静水压力、坡体自身重力及其所产生的扬压力对滑坡体的作用,而忽略了动水压力的影响。基于此,运用滑坡极限平衡原理,分别建立考虑动水压... 平推式滑坡常见于四川盆地近水平砂泥岩互层地区,其启动动力主要由地下水提供。前人的研究主要考虑静水压力、坡体自身重力及其所产生的扬压力对滑坡体的作用,而忽略了动水压力的影响。基于此,运用滑坡极限平衡原理,分别建立考虑动水压力和不考虑动水压力时的极限平衡方程,并推导出两种模型下平推式滑坡后缘临界水头的计算公式。通过典型平推式滑坡案例对模型进行验证,结果表明:在强降雨条件下,用考虑动水压力的极限平衡方程推导出的临界水头更符合实际;岩层倾角越大,地下水单宽流量对临界水头的影响也越大。 展开更多
关键词 平推式滑坡 地下水 流体动力荷载 临界水头 扬压力 单宽流量 极限平衡法 边坡滑移
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Moored Ship Motions due to Tropical Cyclone Linda
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作者 Wissanu Hattha Tetsuya Hiraishi 《Journal of Energy and Power Engineering》 2017年第7期465-482,共18页
Severe wind-wave due to tropical cyclone Linda can cause port downtime which affects port operations such as berthing, mooting and (un)loading of the ship. The ship motions are criteria for limiting the port operati... Severe wind-wave due to tropical cyclone Linda can cause port downtime which affects port operations such as berthing, mooting and (un)loading of the ship. The ship motions are criteria for limiting the port operations, human safety and preventing the damage of port equipment and furniture. Therefore, this study discusses moored ship motions due to severe wind-wave during the tropical cyclone Linda which entered the Gulf of Thailand in November 1997. The ship motions are represented in the moored ship analysis at SRH (Sriracha Harbour Port) and BLCP (BLCP Coal-Fired Power Plant Port), and are subject to the static environmental load on the ship in accordance with Spanish Standard (ROM 0.2-1990) [1]. The environment in numerical model is derived from the wave model and hydrodynamics model using the application of Delft3D-WAVE and Delft3D-FLOW. The model location includes Ao Udom Bay and Rayong Sea. The model results represent the environment at Rayong Sea which is more severe than Ao Udom Bay. The ship motions at BLCP are mostly larger than SRH. 展开更多
关键词 Moored ship motion storm surge tropical cyclone Linda berth operability port downtime
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