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1)  large-area wedge cutting
大面积楔形掏槽
2)  upper and lower wedge-shaped undercut
上下楔形大掏槽
1.
The large upper and lower wedge-shaped undercut holes arrangement in the centre of the heading face is recommended based on the comparison and analysis of different undercut holes arrangements in excavation of the Xiganchi water conveyance tunnel located in weak and soft surrounding rocks using smooth blasting technology.
分析光面爆破技术在西甘池输水隧洞软弱围岩开挖中的掏槽孔方案比较,采用在掌子面中心布置上下楔形大掏槽的方案。
3)  wedge cut
楔形掏槽
4)  vertical oblique cut
竖楔形掏槽
5)  double wedge cut
双楔形掏槽
1.
The results of studies show that it is feasible that the development opening was excavated at the foot wall, and a well blasting effect can been achieved by using the double wedge cut.
通过理论分析及实践验证,作者提出将原来的在底板中的开拓巷道改到顶板中是切实可行的;在白云岩中采用双楔形掏槽眼布置方式,能取得良好的爆破效果。
6)  vertical wedge cut
垂直楔形掏槽
补充资料:鳞石英楔形双晶


鳞石英楔形双晶


鳞石英楔形双晶
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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