Stability analysis of accumulation body based on monitoring results of deep displacement

Abstract

The stability of accumulation body commonly adopts a qualitative and quantitative analysis method, which considers the geological boundary conditions, calculation model and mechanical parameters of rock mass and so on This causes the stability results be limited, so it is unlikely to make a real-time quantitative evaluation on the accumulation body. This paper proposes a method which avoids these problems, and timely evaluates the accumulation stability based on the monitoring results in the process of the deformation development. It involves two parameters, i.e. the integrity index S(i) and the destructive index S(d), used to evaluate quantitatively the dynamic change of accumulation body when the progressive destroy occurs from the bottom up. Take talus in front of the dam of Zippingpu hydraulic project as an example, this method not only measures the S(i) and S(d) during movements of its reservoir water level, but also evaluates the impact of Wenchuan earthquake on the accumulation body. it is proved by an example that this method is convenient, practical and feasible..

Analysis of Urban Landscape Pattern and Ecoenvironment Benefit Based on Heat Island Effect – With Beijing, China as an Example

“…Urban green land can increase the value of real estate, provide people with leisure and entertainment places, moreover, they have multiple important ecological functions such as reducing surface runoff, alleviating urban heat islands, cooling and humidifying (Cannistraro et al, 2017;Gehrt and Chelsvig, 2003;Jiao and Fang, 2018), as well as reducing ecological and environmental damages caused by urbanization. However, if we want to achieve the goal of improving the urban ecological environment through the urban green land system, we must not only ensure large areas of green land, but also scientifically plan the shape and spatial distribution of urban green land (Dai et Dong et al, 2018). Therefore, this paper selected the urban images of Beijing taken by SPOT5 satellite in 2015, and adopted the gradient analysis and landscape index method (main landscape indices are calculated according to Eqs.…”