复杂片岩地区的桩基工程常出现桩基承载力不足的问题。
总结出一套较好的小断面隧洞二云母片岩节理发育段的爆破方法。
河口组是主要的含矿层位，由各类片岩、大理岩、板岩及变质火山岩组成。
主要岩性为有灰黑色二云（石英）片岩、深灰色板岩、千枚状板岩夹长石石英砂岩等；
1·The quartz-mica schist together with paragneiss constituted the old supracrustal series.
长石石英云母片岩与副片麻岩一起构成了古老的表壳结构。
2·Scarabs were made from a wide variety of materials such as carnelian lapis lazuli basalt limestone schist turquoise ivory resin steatite and bronze.
圣甲虫由多种多样的材料例如玛瑙，天青石，玄武岩，石灰石，片岩，绿宝石，象牙，树脂，滑石和青铜做成。
3·Below are two more striking varieties of schist.
下面是两个比较突出的品种片岩。
4·Table mountain was formed in Yanshan movement period, the mountain mainly by the crystallization of ancient schist and sandstone.
桌子山形成于燕山运动时期，山体主要由古老的结晶片岩和砂岩构成。
5·Dakendaba Group occurred in Iqe area, northern margin of Qaidam basin, can be divided into amphibolite assemblage and schist assemblage.
柴达木北缘鱼卡河地区的达肯大坂岩群可划分为斜长角闪岩岩组和片岩岩组。