1) protecting borehole wall blasting
护壁爆破
1.
Application of double-pipe protecting borehole wall blasting in development laneway of Qingping Phosphate Mine;
光面护壁爆破在清平磷矿开拓巷道中的应用
2.
To study single hole-unilateral protecting borehole wall blasting,cement mortar model tests were carried out.
对单孔单侧护壁爆破进行了砂浆模型试验,并对护壁面和临空面进行了动态应变测试,测试结果显示护壁面的应变峰值较临空面降低了44%;运用LS-DYNA3D有限元软件对该试验进行三维数值模拟,分析了炮孔周围介质的有效应力场、压力场、速度场及质点位移的发展和分布。
3.
This paper introduced the principle and method of protecting borehole wall blasting and its application in the Dongxia and Weifang coal mine.
本文介绍了护壁爆破原理和方法以及其在东峡煤矿、潍坊煤矿的应用情况。
2) smooth blasting of pipe protecting borehole wall
光面护壁爆破
1.
The shear stress on smooth blasting of pipe protecting borehole wall between free face and protecting face reaches as high as 3.
进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验,获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。
2.
Dynamic photo elasticity experiment is conducted,and the isochromatic fringes graphs in the process of smooth blasting of pipe protecting borehole wall is obtained.
在理论上分析了光面护壁爆破新技术的作用原理。
3) protecting borehole wall smooth blasting
护壁光面爆破
4) single hole-unilateral blasting
单孔护壁爆破
5) New technology of double-pipe protecting borehole wall blasting
护壁爆破新技术
6) Cutting seam cartridge blasting of protecting borehole wall with pipe
切缝护壁爆破
补充资料：护壁
墙裙。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条