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

Disigner of the Invention:tushihao,梁宁宁,朱德福,赵宾

Type of Patent:国内

State of Patent:专利授权

Application Number:201610821602.2

Number of Inventors:5

Service Invention or Not:no

Application Date:2016-09-14

Authorization Date:2019-06-04

First Author:wangfangtian