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Instability Investigate of Sarney dam abutments, under seismic loading

机译：地震作用下萨尼坝基的不稳定性研究

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摘要

Sarney earthen dam, at a distance of 34 km southeast of Minab in the province in the study. Dam sediment structure of the division, located in the extreme western Makran zone. Dominant lithology within the catchment dam Sarney mainly of shale, sandstone, mudstone and siltstone is formed. There loose marl and shale facies in support of the dam and fault Sarney transformed prison of potential landslides in the study area. Firstly, the study was designed to collect basic information, then check the field and the data analysis was done by software Dips and Slide v.5.1. The purpose of this study was to determine the seismic zone and the maximum horizontal acceleration of the earthquake and determine the stability of the rock dam seismic loading conditions. In the rock mass surrounding the reservoir, there is also the potential slip plane parallel to the fracture event is not unexpected slip wedge. Within the reservoir, circular land sliding on the debris slope is very high. The domain area with slopes of 30 degrees in the natural state average on the right and left with a safety factor of 1.78, are stable. In the event of an earthquake with a horizontal acceleration of 0.5, with a range of safety factor will be 0.81 and are therefore unstable. Therefore, to prevent slippage of unstable mass of proposed reservoir landslide stabilization operations include reducing the slope in the form of staircase, retaining walls, and done shotcrete impermeable slopes and etc.
机译：在该省米纳布东南34公里处的Sarney土坝。大坝的沉积物构造师，位于马克兰最西部地区。流域大坝萨尼内的主要岩性主要是页岩，砂岩，泥岩和粉砂岩。研究区有松散的泥质和页岩相，以支撑大坝和断层，Sarney将其改造成潜在的滑坡监狱。首先，本研究旨在收集基本信息，然后检查该领域，并使用Dips和Slide v.5.1软件进行数据分析。这项研究的目的是确定地震带和地震的最大水平加速度，并确定岩坝地震荷载条件的稳定性。在储层周围的岩体中，还存在与裂缝事件平行的潜在滑动面，这不是意外的滑动楔形。在储层内，在泥石坡上滑动的圆形陆地非常高。左右自然状态平均倾斜度为30度且安全系数为1.78的区域区域是稳定的。在水平加速度为0.5的地震中，安全系数的范围为0.81，因此不稳定。因此，为防止不稳定的质量滑移，建议的水库滑坡稳定操作包括减少阶梯形式的斜坡，挡土墙和喷射混凝土的不渗透性斜坡等。

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