[雙語翻譯]邊坡穩(wěn)定性外文翻譯--新褐煤露天煤礦設計邊坡穩(wěn)定性分析

1、3300 英文單詞， 英文單詞，1.7 萬英文字符 萬英文字符,中文 中文 5200 字文獻出處： 文獻出處：Bednarczyk Z. Slope Stability Analysis for the Design of a New Lignite Open-Pit Mine[J]. Procedia engineering, 2017, 191: 51-58.Slope Stability Analysis for the Desi

2、gn of a New Lignite Open-Pit MineZbigniew BednarczykAbstractThe paper presents geotechnical engineering studies for the design of a new lignite open-pit mine in central Poland. The lignite deposit occur in a deep tectoni

3、c rift formed in Mesozoic rock characterized by complex geological conditions. The rift is approximately 10 km long, 1 km wide and 50-250 m deep and filled with Neogene and Quaternary sediments. The design of the open-pi

4、t mine required geotechnical analysis to reveal possible problems that may occur during its construction and operation. The author of this paper had opportunity to perform slope stability studies and geotechnical analy

5、ses within the project conducted by Poltegor-Institute. The calculation procedure enabled determination of slope stability on the design of excavation and spoil dump. It included 21 analyses using Flac v.7 of which 14 re

6、garded the slopes of the pit, 6 the slopes of the external spoil dump and one covered both areas. The results indicated that the factor of safety Fs ranges 0.75-1.65 for the pit and 1.12-1.60 for the dump. In risk areas

7、slope inclination were lowered due to likelihood of developing of landslide processes. These included spoil dump area close to S-8 road. Due to relatively limited geotechnical data in same areas especially on northern sl

8、ope and western part of spoil dump detailed geotechnical investigations will be necessary. The instability problems can be caused by the groundwater conditions and the presence of high compressibility organic peats in th

9、e spoil dump bedrock layers. Comprehensive identification and monitoring of geotechnical risks for the mine slopes and storage of overburden should be a continuous process. This activity should start from the beginning s

10、tages of construction and should be conducted also during exploration and continuing to mine final reclamation to reduce potential natural hazard impact on mining and the natural environment.Keywords: lignite opencast mi

11、ning; slope stability; geotechnical engineering1. IntroductionLignite opencast mining has a significant contribution to the production of electricity in a number of European countries. Germany, Greece, Poland, Czech Repu

12、blic, Bulgaria and Romania, produce approx. 96% of lignite in the European Union, a total of 433.8 mln t [4, 11]. In Poland 30% of electricity is produced from brown coal and it is one of the cheapest sources of energy.

13、Over 45 billion tons of lignite was documented in Poland till this time. Till now only 2.6 billion were mined. Some of the older lignite mines will end the current deposits in the near future. The largest Belchatow mine

14、will end production in 2038, the Turow mine a few years later. The plans to build a new coal mines were not finally decided but it requires in advance detailed recognition of geotechnical engineering conditions. Lignite

15、mining in Poland, due to high, 200–300 m exploitation depth is often associated with geohazards. In the paper slope stability analyses for the design of a new mine in Zloczew are described. The preliminary design project

16、 of this mine was realized in 2014 by Poltegor-Institute [2]. The exploitation of lignite layers in a deep tectonic rift will require mining of large volume of limestone and marl rocks located on the south slope. The geo

17、technical engineering part of the design focused on description of potential geohazards. Paleolandslide deposits located on the South slope and low strength clayey soils on the North slope could pose slope stability prob

18、lems during the coal exploitation. Others m deep.Table 1. Zloczew deposit engineering geology lithological units [5].1.2. Methods of numerical analysisThe Shear Strength Reduction Method, Flac / Slope v.7.0 codes was use

19、d in slope stability Engineering geology units Stratygraphy Lithology1 Organic soils peat, ooze2 Non-cohesive, river and glacial depositssilty sand, fine sand, middle sand, coarse sand, mixtures sand + gravel, gravel, bo

20、ulders3 Near surface loams Quaternary Periodcoarse sand, loam, sandy loam, silty loam, stiff loam, stiff sandy loam4 Glacial loamsloamy sand, loam, sandy loam, silty loam5 Mud and silt deposits silt, sandy silt6 Clays c

21、lay, sandy clay, silty clay7 Boulder clay clay with boulders8 Organic soils gyttja, lignite, ksylite9 Sands, Gravels, its mixturessilty sand, fine sand, middle sand, coarse sand, sand + gravel, gravel, boulders10 Silts

22、over lignite loamy sand, silt11 Silts with organic material loamy sand, silt12 Silts below the lignite loamy sand, silt13 Clays above the lignite Neogene Period clay, sandy clay, silty clay14 Clays with organic material

23、clay, sandy clay, silty clay15 Clays between lignite deposit clay, sandy clay, silty clay16 Clays below lignite deposits clay, sandy clay, silty clay17 Lignite lignite18 Clayey-loamy detritus clayey detritus19 Rocks detr