Dynamic response characteristics of a tailing dam determined by shaking-table tests

2020 ◽  
Vol 13 (18) ◽  
Author(s):  
Jiaxu Jin ◽  
Qianshen Ding ◽  
Hongzhi Cui ◽  
Pingyi Zhang ◽  
Xiaochun Xiao ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Shaking Table ◽  
Shaking Table Tests ◽  
Response Characteristics ◽  
Tailing Dam ◽  
Dynamic Response Characteristics

Dynamic response characteristics and failure mode of slopes on the loess tableland using a shaking-table model test

Landslides ◽  
2020 ◽  
Vol 17 (7) ◽  
pp. 1561-1575 ◽  
Author(s):  
Zhi-jian Wu ◽  
Duo-yin Zhao ◽  
Ai-lan Che ◽  
Da-wei Chen ◽  
Chao Liang
Keyword(s):  
Dynamic Response ◽  
Failure Mode ◽  
Model Test ◽  
Shaking Table ◽  
Response Characteristics ◽  
Table Model ◽  
Dynamic Response Characteristics ◽  
Shaking Table Model Test

scholarly journals Dynamic Response Characteristics of Aeolian Sediment along Sichuan-Tibet Railway

2021 ◽  
Vol 2 (2) ◽  
Author(s):  
Kan Han ◽  
Chunxiao Xue
Keyword(s):  
Dynamic Response ◽  
Ground Motion ◽  
Shaking Table Test ◽  
Soil Layer ◽  
Time History ◽  
Surface Displacement ◽  
Shaking Table ◽  
Aeolian Sand ◽  
Response Characteristics ◽  
Dynamic Response Characteristics

In order to reduce the damage of liquefaction of aeolian sand along the Sichuan-Tibet railway, the dynamic response characteristics of saturated aeolian sand in the study area were discussed by using shaking table test. The results show that the macroscopic characteristics of saturated aeolian sand in the study area are subsidence, water flow and fracture. The displacement time history shows that the surface displacement increases with increasing the input ground motion acceleration. When the acceleration is small (0.1g), the vibration in the soil layer has an obvious tendency to enlarge continuously from bottom to top. With the increase of the acceleration (0.2g), the amplification trend basically disappeared. When the acceleration increases to 0.3g, the ground motion increases first and then decreases.

scholarly journals Study on Dynamic Response Characteristics and Damage Mechanism of Tunnel Lining at Entrance of Shallow Bias Tunnel

2021 ◽  
Vol 2021 ◽  
pp. 1-15
Author(s):  
Lin Li ◽  
Xiaodan Guo ◽  
Zuyin Zou ◽  
Zhanyuan Zhu ◽  
Zihong Guo ◽  
...  
Keyword(s):  
Dynamic Response ◽  
Structural Damage ◽  
High Speed ◽  
Shaking Table Test ◽  
Internal Force ◽  
Tunnel Lining ◽  
Shaking Table ◽  
Response Characteristics ◽  
Instability Problem ◽  
Dynamic Response Characteristics

The structural damage of the lining structure at the entrance of a tunnel is the most common instability problem. The instability problem may cause dynamic effects such as earthquakes and blasting. Based on the seismic damage data collected from previous major earthquakes at the entrance of shallow-buried tunnel, the shaking table test and numerical simulation are used to analyze dynamic response characteristics and damage evolution characteristics of the tunnel in the shallow-buried hole at 30°. The study revealed the stress characteristics of tunnel lining and the mechanism of structural damage under earthquake excitation. The research results show that the biased tunnel (30°) is susceptible to damage on the unsymmetrical loading side, the biased ground surface leads to acceleration, and high speed also significantly increases the effect. The biased side leg of the tunnel lining cross section is a location with a large internal force distribution. The biased tunnel has a relatively unfavorable internal force value distribution and a larger peak, and the peak at the larger bias side has the largest peak value. The skewback and spandrel portion of the biased tunnel lining load are more likely to be damaged.

scholarly journals Dynamic Response Characteristics and Failure Mechanism of Coal Slopes with Weak Intercalated Layers under Blasting Loads

2020 ◽  
Vol 2020 ◽  
pp. 1-18
Author(s):  
Guang-wei Liu ◽  
Dan-qing Song ◽  
Zhuo Chen ◽  
Ju-wen Yang
Keyword(s):  
Dynamic Response ◽  
Failure Mechanism ◽  
Natural Frequency ◽  
Shaking Table ◽  
Slope Instability ◽  
Dynamic Loads ◽  
Blasting Operation ◽  
Response Characteristics ◽  
Weak Interlayer ◽  
Dynamic Response Characteristics

Rock slopes with weak intercalated layers could experience disturbance from various deep mining activities; however, their dynamic stability has not been thoroughly investigated. In this paper, the dynamic response characteristics and failure mechanism of the coal slopes with weak intercalated layers under blasting loads were studied by means of numerical analysis, shaking table tests, and field tests. The effects of dynamic loads with different frequencies on the dynamic response of the slope were analyzed, and the natural frequency of the slope was also determined. The results show that the dynamic amplification effect of the slope is smaller than that of the homogeneous slope, and weak layers weaken the wave propagation in the rock mass. Both experimental and field investigation results show that the slope’s natural frequency was approximately 35 Hz. The slope deformation decreased with the distance of the blasting source. Cracks appear along the weak interlayer firstly under the action of horizontal vibration; then, longitudinal cracks occur at the slope crest. With the increase of dynamic loads, cracks continue expanding, deepening, and penetrating in the main controlled weak interlayer; then, the sliding body presents tensile shear failure along the sliding surface. This study could provide insights into the understanding of the coal slope instability and failure mechanism; this could benefit the blasting operation of the coal slope in fields.

Intracellular Dynamic Response Characteristics of Pineal Photoreceptors

1984 ◽  
Vol 16 (1-2) ◽  
pp. 119-122
Author(s):  
Y. Morit ◽  
K. Segi ◽  
M. Samejima ◽  
T. Nakamura
Keyword(s):  
Dynamic Response ◽  
Response Characteristics ◽  
Dynamic Response Characteristics ◽  
Pineal Photoreceptors ◽  
Intracellular Dynamic
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