Numerical Simulation Study on the Influence of Mine Earthquake on the Bolt Stress

Zhang, Xiaoqian; Zhang, Heng; Wei, Chengmin

doi:10.1155/2021/6364718

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…2. In-depth study of the quantitative mechanical model of shock composite dynamic disasters [14,15];…”

Section: Introductionmentioning

confidence: 99%

Research on composite dynamic disaster prevention and control system of mine earthquake and shock in thick and hard rock mines

Zhu

2022

Applied Mathematics and Nonlinear Sciences

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With the rapid entry into deep mining of coal mines in China, the impact composite dynamic disaster of thick and hard layer mines and mine earthquakes has increasingly become a major disaster that threatens the safe and efficient mining of deep coal. Studying its occurrence mechanism, disaster prevention and control system has become a new major scientific issue in the field of coal mine safety. This paper proposes a framework for a composite dynamic disaster prevention and control system framework for thick and hard rock mines. First, the gravity forms, extents and deformation characteristics of different rock layers of the structural model are analysed, and the expressions of concentrated force and periodic breaking step distance of rock beams in thick and hard rock layers at the fixed support end are deduced. Then, according to the cause of the shock composite dynamic disaster, finally, the specific testing and calculation methods of mine earthquakes in thick hard rock mines are designed. The regional and local measures to manage compound dynamic disasters are put forward. Experiments show that the system is successfully applied to the mining practice of working face, and the results of water conservancy and stress monitoring support the rationality of the system. And through the implementation of impact prevention and control measures, the safety and disaster prevention and control of the working face was finally realised.

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“…2. In-depth study of the quantitative mechanical model of shock composite dynamic disasters [14,15];…”

Section: Introductionmentioning

confidence: 99%

Research on composite dynamic disaster prevention and control system of mine earthquake and shock in thick and hard rock mines

Zhu

2022

Applied Mathematics and Nonlinear Sciences

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Study on Dynamic Disaster Mechanisms of Thick Hard Roof Induced by Hydraulic Fracturing in Surface Vertical Well

et al. 2022

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With the increase in mining depth and the deterioration of mining conditions, thick and hard overburden movement frequently induces mine earthquakes and rock bursts. Some mines are expected to prevent and control super thick hard rock mine earthquakes through vertical ground well water fracturing technology. However, the dynamic underground disaster appears more intense. Taking the '11.30' mine earthquake in a mine in Shandong Province as the engineering background, the dynamic disaster mechanism of an extraordinarily thick and hard roof induced by hydraulic fracturing of vertical wells on the ground was studied utilizing field investigation, accident case analysis, similar material simulation test, and theoretical analysis. The main conclusions are as follows: (1) After hydraulic fracturing vertical wells on the ground, the movement mode of thick and hard roofs changed from layer-by-layer to overall sliding movement; (2) The influence range of the advanced abutment pressure of the working face is reduced by the hydraulic fracturing of the vertical shaft, and the peak value of the advanced abutment pressure increases. Furthermore, the advanced abutment pressure's peak is far from the coal wall; (3) The hydraulic fracturing technology of cross-arranged vertical surface deep and shallow wells and the hydraulic fracturing technology of cross-perforated surface multi-branch horizontal wells are proposed to avoid the dynamic disaster of overall sliding movement of an extremely thick hard roof induced by surface hydraulic fracturing. Therefore, these research results provide significance for preventing and controlling mine earthquakes and rock bursts in super thick hard roof mines.

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Numerical Simulation Study on the Influence of Mine Earthquake on the Bolt Stress

Cited by 2 publications

References 21 publications

Research on composite dynamic disaster prevention and control system of mine earthquake and shock in thick and hard rock mines

Research on composite dynamic disaster prevention and control system of mine earthquake and shock in thick and hard rock mines

Study on Dynamic Disaster Mechanisms of Thick Hard Roof Induced by Hydraulic Fracturing in Surface Vertical Well

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