岩体力学英文作业homework(共7页)

1、 Wang Liang-qing associate professor Homework 1. A joint plane has a dip angle=420 and dip direction= 1440. Draw the complete circle corresponding to thestereographic projection of the joint plane.Fig.12. Draw the stereographic projection of the joint pyramids resulting from the following joint plan

2、es:table.1Plane Dip angle (deg.) Dip direction (deg.)P1600700P25002600P380000P42001500Fig.23. Find the normal to the plane constructed in problem 2Fig.3We can find the normal to the plane constructed in problem 2 from fig.3. The orientations of normal to the plane are listed in the following table:t

3、able.2Normal to planeN1N2N3N4Plunge30°40°10°70°Trend250°80°180°330°4. Find the sliding directions for single face sliding on the planes given in problem 2 under gravitational loading.Fig.4aFig.4bFig.4cFig.4dAll the possible sliding directions for single face s

4、liding on the planes are shown in the figure above such as Fig.4a、Fig.4b、Fig.4c、Fig.4d.5. Find all the possible sliding directions for double plane sliding using the planes given in problem 2 undergravitational loading.Fig.5aFig.5bFig.5cFig.5dFig.5eFig.5fAll the possible sliding directions for doubl

5、e plane sliding are shown in the figure above ,such as Fig.5a、Fig.5b、Fig.5c、Fig.5d、Fig.5f.6. When slope plane has a dip angle=550 and dip direction= 2700 , Evaluate slope stability using the planes given in problem 2 under gravitational loading(joint fiction angle= 30 degree, joint cohesion=0).Fig.6aToppling failure:table.3P1P2P3P4maximum slope angle of safety90°90°90°90°Plane failure:table.4P1P2P3P4maximum slope angle of safety90°50°90°90°Wedge slide:table.5I12I13