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。
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。
Study on Effect of Symmetry of Wedge-shaped Cutting Hole Angle on Cut Blasting
楔形掏槽炮孔角度对称性对掏槽效果影响研究
The Norwegian cut can provide more dependable advance per round than the plough cut.
挪威掏槽与楔形掏槽相比，可以提供更可靠的每次爆破的进度。
Popularization and Application of Deep-hole Blasting Technique in Bottom Compound-term Wedge Cutting
底部复式楔形掏槽中深孔爆破技术的推广应用
Design of Combination of Smooth Blasting and Double-wedge Cut for Roadway Excavation
双楔形掏槽方法和光面爆破技术的综合设计
The loosening holes outside the plough cut are also drilled at an angle which improves the breakage possibility.
在楔形掏槽眼外侧的扩槽眼也要有角度以改善爆破效果。
Preliminary Study on Forming Laws of Cuspidal Splitter Split-extruding Rectangular Slot
尖头劈楔劈挤矩形槽成形规律初步研究
A wedge or key that fits into a groove to make a joint.
加强肋作为连接物填入槽内的楔形物或舌状物
sublevel undercut caving method
分段下部掏槽崩落开采
a screwdriver with a flat wedge-shaped tip that fits into a slot in the head of a screw.
有可以插入螺丝头的狭槽的楔形尖端的螺丝起子。
wedge breech mechanism
楔形炮闩，楔式闭锁机
To connect with a tongue-and-groove joint.
楔紧用楔形部件使密接
One of the triangular characters of cuneiform writing.
楔形字楔形方字的三角形字之一
A wedge - shaped charge pointing downward.
楔形普通图记一种头朝下的楔形图章
During recent years the seam cut has once again come into use.
近几年来，又再度使用了裂缝掏槽。
Study of Method of Conducting Smooth Blasting in Weak and Soft Surrounding Rocks
软弱围岩中光面爆破掏槽孔方案研究
Thin taper keys and their corresponding keyways
GB/T16922-1997薄型楔键及其键槽
Taper keys--Cross section dimensions of keys and keyways
GB/T1563-1979楔键键和键槽的剖面尺寸
A heavy hammer having a wedge-shaped head and used for splitting logs.
楔手重锤有楔形头的重锤，用于劈圆木