一种地面钻孔预裂爆破浅埋房式采空区顶板的方法

Release time:2020-10-30 Hits:

Affilication of Author(s):矿业工程学院

Scope of patent:国内

Disigner of the Invention:马奇,冯光明,吴承国,王子升,李岗,linailiang

Type of Patent:国内

State of Patent:专利授权

Application Number:201910293324.1

Number of Inventors:7

Service Invention or Not:no

Application Date:2019-04-12

Authorization Date:2020-06-30

First Author:wangfangtian