一种地面钻孔预裂爆破浅埋房式采空区顶板的方法

Release time:2023-09-01 Hits:

Affilication of Author(s):矿业工程学院

Scope of patent:国内

School Sign:第一单位

Disigner of the Invention:邵栋梁,Zhao Bin,梁宁宁

Type of Patent:国内

State of Patent:专利授权

Application Number:202010690638.8

Service Invention or Not:no

Application Date:2020-07-17

Authorization Date:2021-04-20

First Author:wangfangtian