CAJ | 학술논문

为研究低透气性煤层中瓦斯渗流的各向异性，以同一煤岩平行层理方向和垂直层理方向制取煤样，利用自主研制的试验装置进行含瓦斯煤三轴伺服渗流试验。结果发现平行层理煤样的渗透率远大于垂直层理煤样。在峰值破坏前，平行层理煤样随着轴压增加，渗透率在应力屈服点达到最小值，垂直层理煤样在弹性阶段初始时达到最小值；峰值破坏后，两个方向煤样的渗透率均呈非线性增长。
위연구저투기성매층중와사삼류적각향이성，이동일매암평행층리방향화수직층리방향제취매양，이용자주연제적시험장치진행함와사매삼축사복삼류시험。결과발현평행층리매양적삼투솔원대우수직층리매양。재봉치파배전，평행층리매양수착축압증가，삼투솔재응력굴복점체도최소치，수직층리매양재탄성계단초시시체도최소치；봉치파배후，량개방향매양적삼투솔균정비선성증장。
To study the anisotropy of gas seepage in coal seams with low permeability, coal samples were prepared respectively in the parallel bedding direction and the vertical stratification direction of the same coal rock. Tri-axial servo seepage tests on gas-contained coal were detected by using a self-developed apparatus. It is found that the permeability of coal samples in the parallel is far greater than that of coal samples in the vertical. With the increase of axial pressure, the permeability of coal samples in the parallel reaches its minimum at the yield point before the peak failure, while the permeability of coal samples in the vertical gets its minimum at the initial period of the elastic stage. The permeability of both the parallel and the vertical nonlinearly increases after the peak fail-ure.