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

Abstract

In this paper, it has been studied that types and mechanical properties of tailings silt in Zhuziqing tailings dam based on the Zhuziqing tailings’ deposition characteristics, particles size distribution test, physical and mechanical properties test. Then it has been studied subsequently by the dynamic triaxial test, wave velocity test and standard penetration test for tailings silt that the dynamic characteristics, dynamic strength and vibration liquefaction of the tailing silt. Results show that the tailings silt in tailings pond is graded well. Under the condition of isotropic or anisotropic consolidation, dynamic shear modulus of tailings silt increase as the dynamic shear strain decreasing and increase as the increase of confining pressure or consolidation ratio. But the variation law on damping ratio of tailings silt is just opposite to that of dynamic shear modulus. Results also show that there is more liquefied possibility over the seventh sub-dam in the tailings dam, and the liquefied possibility position locates at the place from new sub-dam to deposited beach in tailing pond.

Experimental Research on the Liquefaction Potential of Tailings Silt in Zhuziqing Tailings Dam

“…General situation of the tailings dam. Zhuziqing tailings pond [7] with the almost area of 3km 2 locates in the Zhuziqing gully, which locates at the southeast of Jiuding Mountain in Dali Bai autonomous prefecture of Yunnan province, P.R.China. Basement geology in the gully is silty clay, silty sand, breccia, gravel, highly weathered sandy shale, limestone weathering from top to bottom.…”

Numerical Simulation on the Three-Dimensional Seepage Field of Zhelamuqing Tailings Dam

“…So, tailings dam is an important facility of the minerals industry, and the primary purpose of tailings dam is to provide safe and permanent storage of mining residues [1]. Today, tailings dams are distributed worldwide [2], [3], and their failures can induce significant properties and human lives loss as well as severe environmental hazard and serious consequences [4], [5].…”