Based on the study of structural feature of fracture zone, the analysis of me-chanical characteristics of structure plane, statistics of joints and the analysis of oriented sample microstructure, with petrofabric analysis and survey of deformation lamelle, it can be determined that the occurrence of the main stress (σ1) in preme-tallogenic stage is NE45°±5°, plunge angle is 40°±5°;
These analysis results of ground stress field in this area are consistent basically with the measured informations and data in situ, the effect caused by changes of the geologic structure plane and geographical undulation, the fracture tectonic system in dam area and its mechanical properties.
The joint sets of A3,J1,A3,J2 and A1,J1 constitute structural surface that links up, the unstable slope is the slipped body caused by the cutting of two sets of structure planes, which poses a great threat to the stability of slope.
It is also shown that some faults and weak layers occur on the structural surface of the dam foundation,and that the stability of the structural surface on left bank sh5 and the one on right bank C3 should be highly concerned. As a result,the overall safety factor of the arch dam can meet the design requirement.
The mechanism of the expansive soil landslide is that in the expansive soil mass, there are varieties of week structural planes that constitute the underlying continuous gliding planes and slide belts.
In order to investigate the effect of structural planes with different dip angles, viz,30°,45°,55°,60°,and 80°,on the deformation of surrounding rock of roadways,triaxial compression tests were conducted in lab using three-dimcnsional models.
A histogram of the distribution of structural surface elements has been presented.
In this paper, we deal with topology optimization problems formulated directly with the design objective of minimizing the sound power radiated from the structural surface(s) into a surrounding acoustic medium.
Certain conditions are assumed that imply that the sound power emission from the structural surface can be obtained in a simpler way than by solving Helmholz' integral equation.
The emulsifying (particle-size distribution, turbidity measurement) and structural (surface coverage, CD) properties of β-casein genetic variants were studied at pH 6.7 and I?=?75?mM (representative pH value for milk).
Among possible structural surface defects atomic steps constitute so far the only well investigated defect.