1) Overcoming of long burden
克服大抵抗线
2) large burder
大抵抗线
3) Over-burden
超大抵抗线
4) wide borehore distance and small burden
大孔距小抵抗线
1.
In blasting excavation along Jitai Expressway, a large area millisecond blasting with wide borehore distance and small burden is adopted.
在济泰高速公路路堑石方爆破开挖中,采用大孔距小抵抗线大区域微差连续爆破技术,合理选择孔网参数、微差时间、封堵高度及超深等。
5) small burden
小抵抗线
1.
Recently,the practice improved that using technique of wide-space small burden blasting can improve the rock crushing,low the big crushing rock rate,reduce the secondary crushing cost.
本文介绍了云浮硫铁矿在台阶应用宽孔距小抵抗线爆破技术改善爆破质量,从而降低爆破成本提高经济效益的情况。
2.
The holes pattern of wide space,small burden in 4.
8m的宽孔距、小抵抗线的孔网参数取代原来的 2 。
6) Burden
[英]['bɜ:dn] [美]['bɝdṇ]
抵抗线
1.
Explosive blasted per delay and burden effects on the time-frequency characteristic of vibration induced by blast
爆破振动时频特征的段药量及抵抗线效应
2.
Large holespacing and small burden blast can enlarge the angle of crater, produce an arc free face beneficial to the intensification of reflecting tensile stress and the distribution of velocity field, and enhance the utilization of blasting energy and improve blast efficiency.
大孔距小抵抗线爆破技术使爆破漏斗角增大,产生有利于反射拉应力增加及速度场分布的弧形自由面,爆破能量利用率高,爆破效果好。
3.
Six causes were analyzed, which are connected with toes after blasting: including geological condition, insufficience in terms of plugging length, burden, charge quantity and subdrilling, and unreasonable initiation technology.
以在水泥矿山露天台阶式开采的经验和相关理论为主 ,分析了与产生根底有关的六个方面的原因 :地质条件恶劣、堵塞长度不足、抵抗线太小、装药量不足、超深不足、起爆技术不合理 ,并提出了相应的减少爆后根底的一些对策 ,并列举了一个工程实例。
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