Slope failure

Simon, A., Larsen, M. C., and Hupp, C. R. (1990). The role of soil processes in determining mechanisms of slope failure and hillslope development in a humid-tropical forest, eastern Puerto Rico. Geomorphology 3, 263-286. 

Developing hedgerows of fodder trees should also be practiced on rainfed agricultural fields on sloping terrain, since this is another effective adaptation technique that reduces the risk of slope failure and soil erosion. 

Control slope stability and landslides. Of course, this is also necessary for successful mining operation, but inadequate control of slope stability may also lead to environmental damage. Slope failure may block or contaminate streams, damage wildlife habitat, and cause flooding that endangers wildlife and humans living near the mine. 

Nailing is done to protect slopes as excavation proceeds—that is, it is a process that works from the top down. In contrast, when fill is placed to raise an area, the slope is created from the bottom up. For high fills, it may be necessary to reinforce the soil in order to prevent a slope failure. This may be done with geotextile sheets, which are placed horizontally to cover the entire fill surface at vertical intervals of several feet. The geotextile sheets add shear resistance to possible slip or failure planes. In order to be effective, the sheets must extend a significant distance beyond the failure planes for unreinforced soil. Rigorous design procedures are not yet available, and the parameters for field use are selected on the basis of past field experience. 

Driscoll, N.W., Weissel, J.K., and Goff, J.A., 2000. Potential for large-scale submarine slope failure and tsunami generation along the U.S. mid-Atlantic coast. Geology, 28 407-410. 

Paull C. K., Ussler W. Ill and Dillon W. P. (2000b) Potential role of gas hydrate decomposition in generating submarine slope failures. In Natural Gas Hydrate in Oceanic and Perrmfrost Environments (ed. M. D. Max). pp. 149-156. Kluwer Academic Publishers, Dordrecht. 

Response to some questions about finite element strength subtraction some scholars believe that non-convergence of finite element solution as a standard slope failure does... 

Zhao Shang-Yi, Zheng Ying-Ren, Zhang Yu-Fang. Study on slope failure criterion in strength reduction finite element method. Rock and Soil Mechanics, 2005, 26(2) 332-336. 

Diverse mining methods decide different mine environment geological problems. For example, underground mining of coal resources often causes mining subsidence opencast mining often causes slope failure and air pollution. 

Opencast High and steep slope failure, water... 

Bjerrum 1. Laboratory miniature vane 2. Atterberg limits o tj a o u Perform Atterberg limit and laboratory vane shear test. Correct results usii the following equation u(field) A(lab) Correction factor curve developed from back calculation of terrestrial slope failures Bjerrum (1972)... 

Loose, metastable structure showing adhesion at point of first contact between sinking particle and surface of sediment prevents it from rolling into stable position. (Data from Terzaghi, K. 1956. Varieties of Submarine Slope Failures. Bureau of Engineering Research Special Publication 23, University of Texas, Austin, TX p. 41,1956.)... 

Approximately 4000 ft of coastline experienced Seed (1968) slope failures from 50 to 500 ft inland. 

Slope failure was believed to be result Seed (1968) of a failure in the clay following (days) an increase in stresses following liquefaction of sand... 

Shallow infinitely long slope failure mechanism. 

The F.S. against slope failure as a function of slope angle (a) and excess pore water pressure ratio [r = (ujy z)] for an undrained condition is presented in Figure 11.12. 

Schwarz, H.U. 1982. Subaqueous Slope Failure—Experiments ami Modem Occurrences. Contribution to Sedimentology 11. Schweizerbart, Stuttgart, Germany, 116pp. 

Terzaghi, K. 1956. Varieties of submarine slope failures. Bureau of Engineering Research Special Publication 23, University of Texas, Austin, TX, p. 41. 

FIGURE 8 Theoretical shallow limit of gas hydrate stability (dashed line) and distribution of mapped slope failures on the Atlantic continental margin of the United States. [From Booth, J. S., Winters, W. J., and Dillon, W. P (1994). Circumstantial evidence of gas hydrate and slope failure associations on the United States Atlantic continental margin. Ann. N.Y Acad. Sci. 715, 487-489]. 

---