β Scribed by W. Colin Rouse
No coin nor oath required. For personal study only.
The residual shear strength of the granular regoliths was found to have a mean value of 36 Β° . A model of microsliding is proffered to explain the shallow slides of granular material and the limiting equilibrium model gave threshold slopes of 36 Β° (dry state) and 22 Β° (saturated state). The slopes in the Afan basin were randomly sampled to create a frequency distribution with population mean 19.4 Β° < # < 21.3 Β° (95% confidence). Unstable slopes had a population mean 21.5 Β° < u < 24.7 Β° and since the limiting angle is 22 Β° the unstable slopes have a central tendency equivalent to the calculated limiting angle. The frequency distribution irrespective of apparent stability was shown to have a population mean very near to the limiting angle so that rapid mass movement is important in interpreting valley side slope. A similar analysis was performed on the fossil cliffs of the Gower Peninsula which have scree slopes grading into solifluction benches. The various slope facets were explained in terms of the engineering properties and paleoenvironment.
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A response surface methodology which employs an orthogonal regression technique and a third-order correction was used to determine in situ engineering properties of an untilled and a tilled Yolo loam soil. The technique employed an elasto-plastic constitutive material model for soil with Drucker Pra
This paper describes the geological, geotechnical and chemical properties of some Sabkha (lagoonal) soils in the Benghazi plain. Several buildings constructed on such soils show tilting and cracks. The cause of this trouble has been traced to the special characteristics of Sabkha soils. It is sugges
The ancient gravel stratum near Nanjing, China, is a major stratum of Cenozoic age along the middle-lower reaches of the Yangtze River. This paper first presents a typical geological profile and material composition of the ancient gravel stratum, and then discusses its geologic origin, soil-rock-for