Rock strata torn apart is not local, but has a reach.

岩层的破裂不只发生在当地，而且会延伸出去。

Caving angles of roofs among key strata are different because of the differences of the load-bearing effect of key strata and mechanical characters of rock strata.

关键层的承载作用和岩层力学特性的差异使关键层间顶板的垮落角不同。

We had the best choir in the area and there were also several rock strata visible on the walls which made teaching geology far more interesting.

洞壁上可以看到好几种岩层，用这个教地理生动有趣。而且我们不需要生物课本，我们的山洞学校里每天都能看到蝙蝠、蜥蜴。

The research results indicate that the top inclined fault and the loose rock strata and the unreasonable construction project are the main causes to induce these defects.

研究结果表明：连拱隧道内侧断裂带、上方松散层等不良地质条件和不合理的施工方案是导致隧道衬砌严重破坏和山体地表开裂的主要原因。

The authors investigated the phenomena of the slope deformation in the slope cutting and thought that the variation of the rock strata was the main factor controlling the slope failure.

作者在大量现场调查的基础上，从边坡工程地质条件、岩体结构特征着手分析了边坡变形和破坏特征产生差异的内在原因；