Coal bed joints are a widespread structure in coal beds. They are important objective in study of shaft structure and also a very important engineering geological factor.
煤层节理在煤层中普遍发育，它不仅是矿井构造研究的重要内容，同时也是极其重要的工程地质因素。
Describes the structure, working principle and operating method of a joints traction bed controlled by micro-processor.
介绍微电脑多关节牵引床的结构、工作原理和操作方法。
To counter the effects of joints on the production of coal mine, the paper advances a new method to forecast the frequency of joints in coal bed and its roof.
针对节理对煤矿生产的影响。本文提出一种预测煤层及其顶板节理频率的新方法。
The time necessary to install a raised floor is extremely limited and the tiles are laid on a completely dry bed. No expansion joints are necessary.
安装快捷，瓷砖需要完全贴在干燥地面上，不需要其他额外的连接件。
The fluctuating pressure in joints of the bed rock may be a main factor to destroy the bed rock lower reach of a high dam.
高坝下游基岩缝隙内的水流压力脉动是可能造成基础破坏的一个基本因素。
The fluctuating pressure in joints of the bed rock may be a main factor to destroy the bed rock lower reach of a high dam.
高坝下游基岩缝隙内的水流压力脉动是可能造成基础破坏的一个基本因素。
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