煤矿安全2019，Vol.50Issue(2)：6-9,4.DOI:10.13347/j.cnki.mkaq.2019.02.002
含瓦斯煤渗透率影响因素敏感性试验研究
Sensitivity Test Study on Influencing Factors of Coal Containing Methane Permeability
周建辛 1王毅1
作者信息
- 1. 太原理工大学 矿业工程学院,山西 太原 030024
- 折叠
摘要
Abstract
The seepage test of coal containing methane with different moisture content is carried out by the triaxial methane seepage test device. It reveals some new insights into the permeable rate of methane that has been affected by many factors. Under different conditions, the permeability of coal containing methane with axial pressure increases with the increase of axial compression. At the same time, it is found that the permeability of coal with lower moisture content is stronger with the change of axial pressure. The influence law of temperature on the permeability of coal containing methane is associated with peripheral restraint stress (confining pressure). When the external constraint stress is small, the thermal stress caused by temperature is dominant, and the permeability of coal expands with the increase of temperature; on the contrary, the external constraint stress is dominant, and the coal body is compacted inward, and its permeability decreases with the increase of temperature. When the external constraint stress is small, the higher the water content, the more sensitive the permeability is to temperature.关键词
含瓦斯煤/渗透率/含水率/外围约束应力/轴压/温度/敏感性Key words
coal containing methane/permeability/moisture content/peripheral constraint stress/axial pressure/temperature/sensitivity分类
矿业与冶金引用本文复制引用
周建辛,王毅..含瓦斯煤渗透率影响因素敏感性试验研究[J].煤矿安全,2019,50(2):6-9,4.
