摘要
作者介绍了网状顶梁的结构特点,以及井上下的试验情况。
Feicheng Mining Administration in Shandong Province has used net-shaped roof beams designed by themselves at face end to control the roof since 1987. The practical experience has shown that it has the following merits:
1. The canopy is light, flexible and easy to erect and withdraw, and labour intensity is reduced;
2. With the application of the canopy, the support density has reduced by a half, and labor productivity has been improved;
3. Waste flushing is eliminated and the material consumption is reduced;
4. This type of support is integral, stable and safe.
The paper describes the structure, specification and surface pressure test of the canopy and trials at the work face, advantages and sisadvantages of this type of support.
出处
《煤炭科学技术》
CAS
1988年第12期2-4,60-61,共5页
Coal Science and Technology
