Study on constitutive model for hard rock under high geostresses;
高地应力下硬岩的本构模型研究
Analysis of influence on errors in Brazilian test of hard rock;
硬岩巴西劈裂法试验误差影响率分析
The quick construction technique for main cave hard rock of Nanliang tunnel entrance;
南梁隧道进口正洞硬岩快速施工技术
In this paper analyze a great deal of practice datum,know hard stratum has important effect in rock moving application statistic method.
在整理和分析大量实测资料的基础上,应用数理统计的方法对覆岩中硬岩层对岩移参数的影响进行了研究,找出了岩层移动参数的影响因素与统计规律,对开采沉陷的进一步研究具有重要的意义。
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
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。
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。
Blasting effectiveness is increased greatly and boring-and-blasting technology in deep-seated and hard-rock tunnel is improved.
通过对影响深部硬岩巷道爆破效果因素的分析,优化出淮南矿区不同条件下岩巷掘进用爆破器材和爆破参数,爆破效率有了很大提高,并探究出深部硬岩巷道钻爆法施工的一些经验。
hard rock coring tool
坚硬岩石井壁取心器
Fisher discriminant analysis model of rock burst prediction and its application in deep hard rock engineering
深部硬岩岩爆预测的FDA模型及其应用
Drilling and Blasting Technology of Hard Rock in New Ventilating Shaft in Zhangxin Coal Mine
张新矿新风井坚硬岩石凿岩爆破技术
2. In flat dip layer, the seam thickness control the stability of the wall rock, the thick-bedded hard rock is stable than the thin-bedded hard rock.
② 岩层厚度在缓倾斜时对围岩稳定起控制作用，厚层硬岩整体稳定性好于薄层状硬岩。
Research on Tunneling Technology in Hard and Mix Ground by Shield Machine;
盾构在硬岩及软硬不均地层施工技术研究
The Model to Dynamically Predict Rockbursts Proneness of Hard Rock at Depth and Its Application;
深部硬岩岩爆倾向性动态预测模型及其应用
The rock must be broken by blasting.
硬岩须用爆破的方法破碎。
What can be done if the overburden is hard rock?
如果剥离物是硬岩，怎么办呢?
Solidified lava filling the vent of an extinct volcano.
岩颈填充死火山的硬化的火山岩
Of, relating to, or resembling rock, especially in hardness; stony.
坚硬的，石质的岩石的，与岩石有关的，或岩石状的，特别指硬度方面；坚硬的
A light - colored tuff used in hydraulic cement.
粗面凝灰岩一种用来生产硬水泥的淡色凝灰岩
Any of various hard, dark - colored rocks, especially basalt and chert.
暗色岩一种坚硬、暗色的岩石，尤指玄武石及燧石
Simulation of Rockburst in Hard and Brittle Surrounding Rocks of Circular Underground Cavern
圆形地下洞室坚硬脆性围岩岩爆的模拟
Petrology of jadeite-bearing serpentinized peridotite and its country rocks from Northwestern Myanmar (Burma).
缅甸含硬玉的蛇纹石化橄榄岩及其围岩的岩石学研究
Vitreous rocks are hard and shiny.
玻璃状的岩石坚硬而晶莹闪光。
This machine can bore through solid rocks.
这台机器能够钻透坚硬的岩石。
"Towards the outside, the rock is cool and hard. "
靠近地表是冷却硬化的岩石。
A crust appears to have formed over the volcanic rubble.
火山熔岩表面似乎形成了一层硬壳。