吐哈盆地西山窑八道湾煤层井壁不稳定机理探讨

Study on Unstability Mechanism of Xishanyao and Badaowan Coal Seam Wellbore in Tuba Basin

本文分析了吐哈盆地西山窑、八道湾煤层井下复杂情况及其原因。着重探讨了煤层并壁不稳定机理，结果表明，煤层井壁不稳定是物理、化学、力学与机械等因素的综合效应。

This paper analyzes the complexity and its reason of Xishanyao and Badaowan coal seam wellbore in Tuha Basin, and emphatically disccusses the mechanism of the coal seam wellbore unstability. The result shows that coal seam wellbore unstability is a synthetic effect caused by such factors as physics, chemistry, mechanics and machinery.