Modeling fault activation due to the evolution of remote stresses

2013 ◽  
pp. 453-460
Author(s):  
M Myers ◽  
V Dunayevsky ◽  
M Bennett
Keyword(s):  
Fault Activation

scholarly journals Analysis of insidious fault activation and water inrush from the mining floor

2014 ◽  
Vol 24 (4) ◽  
pp. 477-483 ◽  
Author(s):  
Xinyu Hu ◽  
Lianguo Wang ◽  
Yinlong Lu ◽  
Mei Yu
Keyword(s):  
Water Inrush ◽  
Fault Activation

scholarly journals Influence of Different Advancing Directions on Mining Effect Caused by a Fault

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Lishuai Jiang ◽  
Pu Wang ◽  
Pengqiang Zheng ◽  
Hengjie Luan ◽  
Chen Zhang
Keyword(s):  
Rock Burst ◽  
Physical Simulation ◽  
Hanging Wall ◽  
Physical Models ◽  
Rock Bursts ◽  
Fault Activation ◽  
Study Results ◽  
Similar Materials ◽  
Simulation Results

To study the correlation among advancing direction, strata behaviors, and rock burst induction, two physical models utilizing similar materials are established. Subsequently, the influence of advancing direction on the mining effect, caused by a fault, is studied. Moreover, the rock bursts affected by faults with different mining directions are compared and analyzed. The results show that the overlying structure varies notably, affected by fault cutting and fault dip, and the fault-affected zone and the cause of induced rock burst differ with different mining directions. However, regardless of mining directions, the overlying structure of the hanging wall is stable and fault activation is not obvious, while that of the footwall is relatively active and fault activation is violent; the risk of rock burst on the footwall is larger than that of mining on the hanging wall. Finally, an engineering case regarding two rock bursts in panel 6303 is used to verify some physical simulation results to a certain extent. Study results can serve as a reference for face layout and prevention of rock bursts under similar conditions.

scholarly journals Research on Fault Activation Law in Deep Mining Face and Mechanism of Rockburst Induced by Fault Activation

2020 ◽  
Vol 2020 ◽  
pp. 1-13
Author(s):  
Lyu Pengfei ◽  
Bao Xinyang ◽  
Lyu Gang ◽  
Chen Xuehua
Keyword(s):  
Dynamic Load ◽  
Static Load ◽  
Coal Pillar ◽  
Fault Structure ◽  
Fault Activation ◽  
Fault Type ◽  
Stress Behavior ◽  
Mining Face ◽  
And Control ◽  
The Impact

To effectively monitor and control the severe mining-induced rockburst in deep fault area, the fault activation law and the mechanical essence of rockburst induced by crossing fault mining were studied through theoretical analysis, microseismic monitoring, field investigation, and other methods; numerical simulation was employed to verify the obtained fault activation law and the mechanical nature. First, the distribution of microseismic sources at different mining locations and the fault activation degree were analyzed. According to the microseismic frequency and the characteristics of the energy stage, the fault activation degree was divided into three stages: fault stress transfer, fault pillar stress behavior, and fault structure activation. It was determined that the impact disaster risk was the strongest in the stage of the fault pillar stress behavior. Based on the periodic appearance law of microseisms in fault area, three types of conceptual models of fault-type rockburst were proposed, and the rockburst carrier system model of “roof-coal seam-floor” in the fault area was established. The mechanical essence of fault-type rockburst was obtained as follows: under the action of fault structure, the static load of the fault coal pillar was increased and superimposed with the active dynamic load of the fault, leading to high-strength impact disaster. Finally, the prevention and treatment concepts of fault-type rockburst were proposed. The monitoring and prevention measures of fault-type rockburst were taken from two aspects: the monitoring and characterization of fault rockburst and weakening control of the high static load of the fault coal pillar and dynamic load of fault activation. The proposed concepts and technical measures have been verified in the working face 14310 of Dongtan Coal Mine with sound results. The research results have a guiding significance for the prevention and control of rockburst in a similar mining face under crossing fault mining.

Scan Tests with Multiple Fault Activation Cycles for Delay Faults

2006 ◽  
Author(s):  
Zhuo Zhang ◽  
S.M. Reddy ◽  
I. Pomeranz ◽  
Xijiang Lin ◽  
J. Rajski
Keyword(s):  
Delay Faults ◽  
Multiple Fault ◽  
Fault Activation
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