scholarly journals Natural slope stability in the Fraser Canyon area, British Columbia (92G, H, I)

1972 ◽  
Author(s):  
W F Bawden
Keyword(s):  
British Columbia ◽  
Slope Stability ◽  
Natural Slope

Analysis of the Effect of Natural Slope Stability due to Tunnel Excavation in Mountainous Areas

2013 ◽  
Vol 690-693 ◽  
pp. 938-942
Author(s):  
Xu Li Liang ◽  
Fei Wang ◽  
Gang Li Hao
Keyword(s):  
Slope Stability ◽  
Influence Function ◽  
Function Method ◽  
Mountainous Area ◽  
Mountainous Areas ◽  
Tunnel Excavation ◽  
Natural Slope ◽  
Influence Function Method ◽  
Theoretical Results ◽  
Good Agreement

The effect of natural slope stability due to the tunnel excavation in mountainous areas is studied used influence function method, and one tunnel excavation project in Hebei province was analyzed, the theoretical results obtained are in good agreement with the real monitoring data, therefore, the influence function method can be effectively used to predict the ground displacement caused by tunnel excavation in mountainous area, which could provide the basis for the evaluation of the safety of such works.

Mechanisms of slope failure on Pyramid Mountain, a subglacial volcano in Wells Gray Provincial Park, British Columbia

2006 ◽  
Vol 43 (2) ◽  
pp. 147-155 ◽  
Author(s):  
Daniel P Neuffer ◽  
Richard A Schultz ◽  
Robert J Watters
Keyword(s):  
British Columbia ◽  
Rock Mass ◽  
Slope Stability ◽  
Slope Failure ◽  
Limit Equilibrium ◽  
Friction Angle ◽  
Ground Acceleration ◽  
Surrounding Water ◽  
The North ◽  
Provincial Park

Pyramid Mountain is a subglacial volcano in Wells Gray Provincial Park in east-central British Columbia. Landslides deform the north and east flanks of the volcano. Field strength testing and rock mass classification designate the hyaloclastite breccia in which the landslides originated as a weak, massive rock mass: uniaxial compressive strengths (UCS) range from 24 to 35 MPa, and geologic strength index (GSI) and rock mass rating (RMR) values are 60–70. The shear strength of fracture surfaces in the hyaloclastite breccia, as measured by laboratory direct shear tests, can be characterized by a friction angle ϕ of 18° and cohesion c of 0.11–0.66 MPa. Limit-equilibrium slope stability analyses show that the landslides were probably triggered by the rapid drawdown of a surrounding englacial lake with no seismic ground acceleration required. Slope measurements and slope stability modeling indicate that Pyramid Mountain was asymmetric prior to failure: the north and east flanks had slope angles of 35°–40°, and the south and west flanks had slope angles of 21°–33°. Slope asymmetry may result from closer ice confinement on up-gradient (north and east) flanks due to higher ice flux in this direction relative to down-gradient (south and west) flanks. At the time of failure, the volcanic edifice was at least partially lithified, with cohesive strengths of 0.19–0.52 MPa. Failures of lithified subglacial and subaqueous volcanic edifices may be triggered by rapid drawdown of surrounding water without seismic loading.

scholarly journals Saturation Depth and Slope Stability considering Unsteady Rainfall in Natural Slope

2007 ◽  
Vol 49 (1) ◽  
pp. 57-65
Author(s):  
Sang-Hoon Kim ◽  
Seong-Pil Kim ◽  
Young-Hwan Son ◽  
Joon Heo ◽  
Pyoung-Wuck Chang
Keyword(s):  
Slope Stability ◽  
Natural Slope

Geologie et amenagement de la montagne

1985 ◽  
Vol I (7) ◽  
pp. 1113-1128
Author(s):  
Pierre Antoine ◽  
Robert Marie
Keyword(s):  
Slope Stability ◽  
High Altitude ◽  
Natural Hazards ◽  
Civil Engineering ◽  
Structural Features ◽  
Mountain Areas ◽  
Natural Slope ◽  
Slope Movements ◽  
Winter Sport ◽  
Laws And Regulations

Abstract After defining highland surroundings, the authors review the main climatic, lithologic and structural features which deal with slope stability in mountain areas. Taking as an example civil engineering works needed by the modern, high altitude, winter sport resorts, they analyse the dangers so induced on natural slope stability. Such an analysis allows introduction and comment about the concept of natural hazards related to slope movements and enhances the numerous problems which arise at each attempt to quantify such hazards or to delimit the areas submitted to their effects as well as administrative means for prevention. Main steps of the evolution of laws and regulations are reviewed, and a brief analysis of natural hazards map, including most recent maps of liability to natural hazards are presented.

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