1) hard rock country
坚硬岩石地区
2) hard rock
坚硬岩石
1.
Characters near strong impact loading zone in hard rock;
坚硬岩石在强冲击荷载作用近区的性状研究
2.
Aiming at the problem of poor blasting effects that exists universally in hard rockst,he middle deep hole blasting tests were done in hard rock tunnels at Shuangyang Mine;and the blasting test results of different kinds of cutting forms have been gotten.
针对普遍存在的硬岩中爆破效果差的问题,在双阳煤矿坚硬岩石巷道进行中深孔爆破试验,得到各种不同掏槽形式爆破的试验效果,通过比较得出复式桶式掏槽完全适合于中深孔爆破,炮眼利用率高。
3.
This paper expounds the Application of presplit controlled blasting technique in the hard rock blast,and introduces the general situation of the engineering,the design scope,the drill-and-blast technical parameters,the structure of charging and explosive load,the blasting network,and the firing order,etc.
阐述了预裂控制爆破技术在坚硬岩石爆破中的应用,介绍了工程概况、设计范围、钻爆技术参数、布孔方式、装药结构及装药量、爆破网络、起爆顺序等。
3) hard rocks
坚硬岩石
1.
Through analysing the drillability and blastability of hard rocks according to characters of hard rocks, suitable blasting parameters and operation way are selected, and good blasting effect is obtained.
针对坚硬岩石岩性特征 ,通过对其可钻性与可爆性分析 ,选取适宜的爆破参数及作业方式 ,获得良好的爆破效果。
4) super-hard rock
极坚硬岩石
1.
According to the energy-delivering model of the drilling steel in super-hard rock, This article adopts ANSYS three dimensions simulation finite element analysis(FEA) software and the methods of the dynamics harmonic analysis, has analyzed the stress state and deformation of the “Flying Dragon” series number ZQ25-2041 integral drilling steel when it bears percussive stress wave.
依据极坚硬岩石条件下冲击凿岩钎具的能量传递模型 ,以“飞龙”系列ZQ2 5 - 2 0 4 1整钎为例 ,在ANSYS平台上做了动力谐响应分析 ,由此确定了危险工作频率 ,能为在此条件下钎杆的疲劳寿命的预测提供理论支
6) hard and compact rock
坚硬致密岩石
1.
The most difficult problem of drilling in hard and compact rocks is that drilling efficiency is very low.
针对坚硬致密岩石钻进中遇到的钻头打滑、钻进效率低的问题,通过改变弱包镶材料,加入强化的石墨颗粒,进行试验与研究,获得了颗粒状石墨能提高金刚石出刃的初步效果。
补充资料：太平洋地区标准会议标准(见太平洋地区标准会议)
太平洋地区标准会议标准(见太平洋地区标准会议)
standards of PASC: see Pacific Area Standards Congress; PASC
Ta iPingyang Diqu Bioozhun Hu呼ib沁幻Zhun太平洋地区标准会议标准(s切md田心sofR巧C)见太平洋地区标准会议。
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