Research on the Dynamic Response of Zhuziqing Tailings Dam

Abstract

The finite element analysis model of Zhuziqing tailings pond is established by using the finite element method (FEM) analysis software ANSYS based on hydrological conditions, engineering geological conditions, tailings silt dynamic triaxial test results and the foundation rock-soil wave velocity tests results. Then it was studied that the dynamic characteristics and dynamic response of Zhuziqing tailings dam under seismic loads. Results show that dynamic shear modulus of tailings silt increase as dynamic shear strain decreasing and increase as the increasing of confining pressure or consolidation ratio under the condition of isotropic or anisotropic consolidation. But the variation law on damping ratio of tailings silt is just opposite to that of dynamic shear modulus. Results also show that under the dynamic peak acceleration 0.2g of seismic wave, response acceleration of Zhuziqing tailings embankment reached the peak at the time of 2.58s, and the response peak acceleration is 5.24m/s2 at the top of this tailings embankment.

Mathematical Modeling of Seismic Vibrations of System: Tailings Dam and Soil Foundations

“…Therewith the study of all elements of the "structure", including the natural soil massif or mountain massif with an artificial dike (wall, etc.) in their natural occurrence is of particular importance [8][9][10][11][12][13][14][15][16][17][18][19].…”

Research on the Dynamic Deformation Characteristics of Tailings Silt in Zhuziqing Tailings Dam

“…Zhuziqing tailings pond with the almost area of 3km 2 locates at the southeast of Jiuding Mountain in Dali Bai autonomous prefecture of Yunnan province, P.R.China，and Zhuziqing tailings dam is constructed with upstream embankment method also. In order to lay the groundwork for further study on the dynamic stability of Zhuziqing tailings dam, the types, physical and mechanical properties, dynamic deformation characteristics [3,4,5], dynamic strength and vibration liquefaction characteristics of Zhuziqing tailings have been studied in this paper based on the tests of deposition characteristics, particles size distribution, physical and mechanical properties, dynamic triaxial stress state, wave velocity and standard penetration for tailings silt. The relationship between depth of standard penetration test (SPT) and SPT counts was put forward.…”