The Dangerous Rock Mass Deformation Analysis with Application of Kalman Filter Method Based on Material Properties and AR Model

2013 ◽  
Vol 738 ◽  
pp. 109-112
Author(s):  
Fu Min Lu ◽  
Ting Yao Jiang
Keyword(s):  
Kalman Filter ◽  
Rock Mass ◽  
Ar Model ◽  
Deformation Analysis ◽  
Filter Method ◽  
The Status ◽  
Rock Mass Deformation ◽  
Kalman Filter Method ◽  
Mass Deformation ◽  
Dangerous Rock Mass

Considering the material property of the rock to the dangerous rock mass,the paper Looks the model parameter of AR( 1) model as the status vector, and uses Kalman filter method to analysis the deformation of the dangerous rock mass. The result shows that the method can improve the accuracy of fitting and forecasting of the model.

Stability Analysis and Control Measures of the Kim-Yun-Mine Collapse

2012 ◽  
Vol 594-597 ◽  
pp. 358-361
Author(s):  
Shan Shan Zhang ◽  
Yu Liang Wu
Keyword(s):  
Rock Mass ◽  
Stability Analysis ◽  
Stereographic Projection ◽  
Control Measures ◽  
Collapse Characteristics ◽  
Basic Characteristics ◽  
The Stability ◽  
Mine Collapse ◽  
And Control ◽  
Dangerous Rock Mass

Collapse is one of the major geological disasters all over the world and threats to life and property safety of people. To make a better understanding of the reason it occurs and how to deal with it, the Kim-Yun-Mine collapse is researched. There are one dangerous rock mass and two collapse accumulation body. The basic characteristics of the collapse is described clearly according to the geological exploration data, and the stability of the dangerous rock mass and the collapse accumulated body is analyzed in the way of engineering geology and stereographic projection. At last, we put forward comprehensive control measures based on the results of stability analysis and collapse characteristics.

scholarly journals Calculation Method of Bonding Section of Joint Surface of Dangerous Rock Mass Based on Amplitude Ratio

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Qingbo Li ◽  
Hongfei Wang ◽  
Mowen Xie ◽  
Weinan Liu
Keyword(s):  
Rock Mass ◽  
Vibration Frequency ◽  
Amplitude Ratio ◽  
Limit Equilibrium ◽  
Time History ◽  
Joint Surface ◽  
Rock Body ◽  
Bonding Length ◽  
The Stability ◽  
Dangerous Rock Mass

In this study, through an analysis of vibration response characteristics of joint surface stiffness on dangerous rock mass, the relationship formula between amplitude ratio of the dangerous rock mass to the bedrock and the length of the bonding section of the joint surface is determined. The stability of the rock mass can be evaluated by combining the formula with the existing rock-mass limit equilibrium theory. This study proposes the existence of a resonance bonding length for the dangerous rock mass. When the length of the bonding section reaches the resonance bonding length, the dangerous rock mass has the largest response to the bedrock vibration. The study found that when the length of the bonding section of the dangerous rock mass is longer than the resonance bonding length, the amplitude ratio increases with the decrease of the bonding section and increases with the increase of the vibration frequency of the bedrock. When the length of the bonding section of the dangerous rock body is shorter than the resonance bonding length, the amplitude ratio decreases with the decrease of the bonding section and decreases with the increase of the vibration frequency of the bedrock. Indoor experiments were conducted by collecting the vibration time-history curves of rock blocks and stone piers and performing analysis and calculation, which proved the accuracy of the analytical results. Through the amplitude ratio of the dangerous rock mass and the bedrock, the bonding length can be calculated. This method can improve the calculation accuracy of the stability coefficient K of the dangerous rock mass.

scholarly journals Instability Mode and Movement Characteristics of Dangerous Rock Body in Steep Rock Slope

2021 ◽  
Author(s):  
Junguang Huang ◽  
Shuai Zhang ◽  
Lei Li ◽  
Weike Li
Keyword(s):  
Rock Mass ◽  
Rock Slope ◽  
Field Structure ◽  
Mass Motion ◽  
Instability Mode ◽  
Rock Body ◽  
Movement Characteristics ◽  
Slope Rock ◽  
Important Basis ◽  
Dangerous Rock Mass

The cutting relationship and development degree of structural plane control the instability mode and scale of rock slope. The trajectory of rock mass after instability is an important basis for the design of dangerous rock prevention. The back slope of a residential area was investigated in this paper. Based on the survey data of the field structure surfaces, the possible instability mode of the slope rock mass was analyzed by using the stereographic projection method. The shear strength parameters of the rock mass were inverted through the investigation of dangerous rock mass. Finally, ANSYS/LS-DYNA was used to simulate the dangerous rock mass motion trajectory. This study provides a reference for the analysis of the instability process of single rock.

Study on Optimization Method of the Slope Angle Design for Open-Pit Mine

2013 ◽  
Vol 734-737 ◽  
pp. 656-660 ◽  
Author(s):  
Shao Jie Feng ◽  
Shi Guo Sun ◽  
Ya Nan Yi
Keyword(s):  
Rock Mass ◽  
Optimization Design ◽  
Slope Angle ◽  
Optimization Method ◽  
Open Pit Mine ◽  
Mine Safety ◽  
Open Pit ◽  
Resource Exploitation ◽  
Original Design ◽  
Slope Rock

The critical slip field theory is applied to optimization design of the slope angle. An intelligent matching optimization of the slope angle design is carried out based on the strata distribution, mechanics parameters of rock mass and a given security reserve. That is the implementation of the maximum allowable slope angle of slope rock mass under the given conditions. Optimized by the final highwall of Buzhaoba Open-Pit Mine, the overall slope angle increased 3°compared to the original design. Which implement the optimum slope angle of final highwall, modified the shortcoming in the original design and ensure the maximization of mine safety and the resource exploitation.

Safety Risk Analysis of the Transmission Line Project Affected by Dangerous Slope Rock

2013 ◽  
Vol 726-731 ◽  
pp. 816-819
Author(s):  
Tai Hua Yang ◽  
Qing Hua Zheng ◽  
Yang Wang
Keyword(s):  
Rock Mass ◽  
Transmission Line ◽  
Transmission Lines ◽  
Geological Disasters ◽  
Response Measures ◽  
Unstable Slope ◽  
Basic Characteristics ◽  
Slope Rock ◽  
The Impact ◽  
Dangerous Rock Mass

The unstable slope rock is one of the geological disasters of mountains along the transmission lines, which includes the falling style and the slumping type, and the former is very dangerous, and threat to the security of transmission line. By means of a typical example study about the falling dangerous rock mass along the 10kV transmission lines, this paper analyzes qualitatively the basic characteristics, failure mechanism, influencing factors of the dangerous rock, et al., and calculated quantitatively the maximum depth affected by the impact of the dangerous rock to the transmission lines. The paper proposes the response measures of dangerous rocks risk, which is of a certain reference in other similar projects.

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