吸附条件下瓦斯压力对煤体强度影响的实验研究

Experimental Study on Influence of Gas Pressure on Strength of Coal Body Under Adsorption Condition

摘要: 煤体强度的测定一般在实验室非吸附条件下完成，为了揭示吸附条件下煤体强度随瓦斯压力的变化规律，基于瓦斯防治理论和现场实践，研制了可实现封闭充气环境下煤坚固性系数的自动化测试装置，研究了吸附条件下瓦斯压力对煤体强度的影响规律。实验表明：煤的坚固性系数受煤样瓦斯压力的影响明显，瓦斯压力越大，煤体强度越小，用以抵抗外力破碎的能力越差。
- 吸附 /
- 瓦斯压力 /
- 煤体强度 /
- 突出鉴定 /
- 变形理论
Abstract: The determination of coal strength is usually done under non-adsorption condition in the laboratory. To reveal the variation of coal strength with gas pressure under adsorption condition, based on gas control theory and field practice, an automatic test device for the strength coefficient of coal in closed inflatable environment was developed, the influence of gas pressure on coal strength under adsorption condition is studied. Experiments show that the strength coefficient of coal is obviously affected by the gas pressure of coal sample, the greater the gas pressure is, the smaller the strength of the coal is, and the less able to resist external force breaking.
- adsorption /
- gas pressure /
- coal strength /
- outbust identification /
- deformation theory

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