عنوان مقاله :
بررسي تاثير انواع مدل هاي رفتاري توده سنگ در منحني عكس العمل زمين
عنوان به زبان ديگر :
The Effect of Various Constitutive Models on Ground Reaction Curve
پديد آورندگان :
رحمان نژاد، رضا نويسنده بخش مهندسي معدن-دانشگاه شهيد باهنر كرمان rahman nejad, reza , كارگر، علي رضا نويسنده اداره كل منابع طبيعي شهرستان ميبد kargar, alireza
اطلاعات موجودي :
دوفصلنامه سال 1390 شماره 11
كليدواژه :
معيارشكست , مدل كرنش نرم شونده , همگرايي-همجواري , مدل هاي ساختاري
چكيده لاتين :
Nowadays, convergence-confinement method is one of the most important methods in determining support systems for both underground circular and non-circular spaces. Selecting an appropriate constitutive model including elastic-perfectly plastic, elastic-brittle- plastic and elastic-strain softening models has a significant role in the application of this method. In some cases, the difference of displacements resulting from choosing different constitutive models is more than 100%.
In this research, we attempted to investigate the effect of different constitutive models on the ground reaction curve and plastic zone made around a circular opening. It has been supposed that a rock mass is initially carries an elastic behavior and undergoes an isotropic pressure, p0. The failure criterion used here is non-linear Hoek-Brown yield criterion. The
problem is solved in a stepwise procedure proposed by Brown et al (1983), in which rock mass strength parameters change in a stepwise method from the peak to the residual values. Finally, a sensitive analysis is performed on the Hoek-Brown strength parameters.
عنوان نشريه :
مهندسي معدن
عنوان نشريه :
مهندسي معدن
اطلاعات موجودي :
دوفصلنامه با شماره پیاپی 11 سال 1390
كلمات كليدي :
#تست#آزمون###امتحان