Analysis of the dynamic stability of hard and thick strata of overlying multilayer spatial structures in deep coal mines and its application

Analysis and Application of the Dynamic Stability of Overlying Multilayer Spatial Structures in Deep Coal Mine

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.353-356.2433 ◽

2013 ◽

Vol 353-356 ◽

pp. 2433-2436

Author(s):

Hong Shi ◽

Yan Hui Ge ◽

Jun Li

Keyword(s):

Dynamic Stability ◽

Coal Mine ◽

Field Experiments ◽

Stress Condition ◽

Dynamic Condition ◽

Recovery Ratio ◽

Spatial Structures ◽

Plane Model ◽

Deep Coal Mine ◽

Overlying Strata

With the deepening of mining, dynamic disasters appear in a large number in the coal mine, and the stress distribution and stress concentration caused by mining act as the important factors that induce the dynamic disasters. The range of overlying strata movement related to the appearing of mine press go beyond the range of traditional plane model, and influence the mining stress field as overlying strata spatial structures. The movement and distribution of overlying strata spatial structures are the theory bases of studying stress condition and dynamic condition of dynamic disaster. According to the characteristics of sediment rock and the movement of strata of overlying multilayer spatial structures in deep coal mine. By using the dynamic stability judgment rules controlled by the top coals recovery ratio, the author worked out the judgment curves of dynamic stability of overlying multilayer spatial structures and explained their application. This paper also analyzes the factors influencing the dynamic stability of overlying multilayer spatial structures. The suggested judgment rule and curve of dynamic stability have been tested by field experiments which achieved safe caving in isolated caving face by adjusting the top coals recovery ratio. The theoretical basis of designing the safe top coals recovery ratio can be provided according to different overlying strata, and the safe overlying strata controlling can be achieved in deep coal mining.

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Molecular insights on the dynamic stability of peptide nucleic acid functionalized carbon and boron nitride nanotubes

Physical Chemistry Chemical Physics ◽

10.1039/d0cp05759b ◽

2021 ◽

Vol 23 (1) ◽

pp. 219-228

Author(s):

Nabanita Saikia ◽

Mohamed Taha ◽

Ravindra Pandey

Keyword(s):

Nucleic Acid ◽

Boron Nitride ◽

Nucleic Acids ◽

Dynamic Stability ◽

Peptide Nucleic Acid ◽

Rational Design ◽

Peptide Nucleic Acids ◽

Boron Nitride Nanotubes ◽

Molecular Hybrids ◽

Single Wall Nanotubes

The rational design of self-assembled nanobio-molecular hybrids of peptide nucleic acids with single-wall nanotubes rely on understanding how biomolecules recognize and mediate intermolecular interactions with the nanomaterial's surface.

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