English translation for "井下试验"

underground trials

Example Sentences:

The underground tests show that the deformation and roof delamination of roadway surrounding rock can be effectively reduced by means of great increase of the bolt pretensioned stress , the steel strip plays an important role in the rock bolting system , and there exsits a critical value for pretensioned stress , up to or beyond which the rock bolting can effectively control the deformation and damage of the surrounding rock
井下试验表明，大幅度提高锚杆预应力可显著减小巷道围岩变形，有效控制顶板离层；钢带在预应力支护系统中起非常重要的作用；锚杆预应力存在临界值，达到或超过临界值后锚杆支护可有效控制围岩变形与破坏。

Similar Words：: "井下设备" English translation, "井下声波电视" English translation, "井下升沉补偿器" English translation, "井下升起发射" English translation, "井下实验" English translation, "井下试样" English translation, "井下水平控制测量" English translation, "井下死" English translation, "井下随钻测井" English translation, "井下随钻测量" English translation