The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
ke ji xin xi
Pages: 61-63
Year: Issue:  10
Journal: Coal Science and Technology

Keyword:  综合机械化采煤学术讨论会煤炭大倾角工作面东北地区效果良好顶板推广使用掩护式液压支架结构简单;
Abstract: <正> 大同坚硬厚砾岩顶板条件下综合机械化采煤坚硬厚砾岩顶板的控制一直是采矿界重视的一个难题,由于缺乏对坚硬厚砾岩顶板的控制手段,一些局、矿一直采用刀柱等采煤方法,该法资源回收率低、机械化程度低、产量低、效率低、劳动强度大、自燃发火频繁并有大面积来压的威胁。煤炭科
Related Articles
No related articles found