2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、2100 英文單詞, 英文單詞,1 萬英文字符,中文 萬英文字符,中文 3050 字文獻(xiàn)出處: 文獻(xiàn)出處:Procedia Engineering 190 (2017) 390 – 397Assessment of Slope Stability on the RoadSlávka HarabinováAbstractThe paper deals with the assessment of slope stabi

2、lity on the road II / 595 near the village Zlatno before and after the landslide caused by floods in 2010. For proposal for a comprehensive assessment and possible remedial action is necessary to know the geological cond

3、itions and choose the appropriate method for to assess slope stability. The calculation of factor of safety was made using GEO 5 software. The critical factors of safety have been determined by Petterson and Sarma Method

4、s. After finding the most unfavorable slip surface has been made a proposal of remediation measures. The paper presents various solutions to ensure slope stability of the road. The most appropriate remedial action is Var

5、iant III - reinforced slope, because he had a greater factor of safety.Keywords: roads; slope stability; landslide; remedial measures;1. IntroductionCurrently, frequent flood events are taking place in our area. In recen

6、t years the intensity and frequency of rainfall, which are capable of causing flooding have significantly increased in Slovakia. Floods are destructive and cause damage to human society. They are associated with high wat

7、er levels and extreme water flow in the river beds [1]. Floods are also associated with rapid erosion processes, which involve the destruction of land resources and consequently may lead to landslides of drenched soil. I

8、n 2010, severe floods hit most of the territory of the Slovak Republic. It was the biggest flooding in last 50 years [2].Climatic factors combined with the erosion activity water courses and groundwater are major causes

9、of slope deformations. In 2010, a result of exceptional a hearty rainfall and flood situation increased the number of slope deformations on 577 new, active landslides, of which over one hundred and endangers the lives, h

10、ealth, property of citizens and the environment.The main cause extremely large landslides were primarily long-term rainfall in the months of May and June, when daily rainfall was 25-50 mm throughout Slovakia, but in the

11、north and east of Slovakia was up to 80 mm. Continuous rain caused significant elevations in almost all water courses and floods. Slopes ground mass saturated with water have become prone to landslide. Figure 1 shows a p

12、rognostic map of the landslide susceptibility zoning [3].2. Landslide on the road II/595 near the village ZlatnoThe consequence of penetration of rainwater on the right embankment slope of the road body there was a lands

13、lide and the road II / 595 near the village Zlatno. The area of interest is located in the village Zlatno, road section is guided in a slope in the unilateral notch. In this area occurred in 2010 a landslide from 24.886

14、to 24.932 kilometers. Asphalt layer of roads after the landslide of the slope are broken and slide down.Landslide narrowed width of the carriageway, thereby reducing the security of vehicle passages in this section (Fig.

15、 2 and 3) [4].3. Geological conditions of the road body and subsoilAccording to the geomorphological division of Slovakia there is the territory located in the Western Carpathians, in the Slovak Ore Mountains. The territ

16、ory belongs to the Banská Bystrica region, of the district Poltár. In hydrological terms, this territory belongs to the basin of the Ipe? River and is drained by a tributary of the Poltarica River. Climatically

17、 the area is evaluated as moderately warm and moderately wet [6].From a geological point of view, subsoil is formed by Paleozoic rocks – granitoids. On the slopes are covered deluvial sediments. They are sandy clays and

18、clayey sands with fragments of rocks. To determine the engineering - geological conditions have been made in the area of two boreholes JZ-1 and JZ-2 [6]. Geological profiles are shown in Figure 4.Fig. 4. The location of

19、boreholes and geological profile of boreholes JZ-1 and JZ-2.Soil classification was made according to STN 72 1001 and in accordance of EN 1997-1. The values of the geotechnical characteristics are given in the Table 1 an

20、d 2 [6].Table 1. The geotechnical parameters of soils.Properties SymbolsGroup F2 – CG (Gravelly Clay)Group F4 – CS (Sandy Clay)Group S5 – SC (Clayey Sand)Poisson´s ratio ? 0.35 0.35Unit weight [kN/m3] J 19.0 18.5Def

21、ormation modulus [MPa] Edef 5 - 8 8 - 10Totally stress parameters –cohesion [kPa] cu 50 - 60 -Totally stress parameters – angle of friction [°] ?u 0 -Effective stress parameters –cohesion [kPa] cef 12 - 14 7 - 9Effe

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