考虑地震工况下的岩体开挖坡角确定方法及安全预测研究  

The Determination Method of the Rock Mass Excavation Slope Angles under Earthquake Condition and Its Safety Prediction

作　　者：宛良朋[1] 李建荣[1] 许晓亮[1] 赵宗勇[1] 

机构地区：[1]三峡大学三峡库区地质灾害教育部重点实验室,443002

出　　处：《灾害与防治工程》2012年第1期41-46,共6页Disaster and Control Engineering

摘　　要：利用Slide软件建立简单模型，研究在地震工况下进行不同坡角开挖的边坡稳定性变化，通过线性拟合后能够得出极限状态下的坡角开挖方案，但对实际工程来讲，要从经济上、坡体强度维持寿命等方面综合考虑，达到有效利用资金和防灾减灾的目的，因此笔者提出一系列优化设计方案。通过类比分析提出了一种简单的安全预测方法，对初步判断边坡强度弱化到一定程度后的抗灾能力，对危岩体及时采取加固措施，防灾减灾具有重大意义。This paper establishes a simple model by Slide software and studies the slope stability changes in different excavation slope angles under earthquake condition. A scheme for slope angle excavation under ultimate state can be obtained by linear fitting. But as to a practical project, integrate aspects such as economy, slope strength and its life mainte- nance should be considered for the effective use of fund and to reach the goal of disaster prevention and reduction. So this paper proposes a series of optimized design programs and a simple effective safety prediction, which has a great significance not only to the preliminary judgment of slope disaster resistance ability when slope strength weakens to a certain extent, but also to the disaster prevention and reduction by reinforcing dangerous rock mass.

关 键 词：坡角设计 防灾减灾 优化设计 安全预测 

分 类 号：TU457[建筑科学—岩土工程]