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。
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。
built on solid foundations
在坚实的地基上建造的
and through solid walls.
甚至看穿坚实的墙壁。
of good substantial quality.
指良好、坚实的品质。
Pour a solid foundation of cement
浇注坚实的水泥地基
a well-grounded theory
有坚实基础的理论.
The weather was fine and the track fast.
天气睛朗，跑道坚实。
This is a smooth, strongly built highway.
这条公路坚实平整。
arguments that have a firm basis,ie that are founded on facts
有坚实基础（有事实根据）的论据
In addition, the defense must be so strong that the enemy would not even dare to contemplate an attack.
另外，也要有坚实的防卫，坚实到敌人根本就不敢动进攻的主意。
Fair education is the strong basis of harmonious society;
实现教育公平，夯实和谐社会的坚实基础
The ground has firmed up a lot since it was properly drained
在适当地排水之后，土地变得坚实多了。
Firm: Good perceptible tannin or acid.
坚实：容易上口的单宁味或酸味。
We must conquer a solid foundation for industry.
我们不得不为工业打下一个坚实基
The house is founded on a solid foundation of cement.
房屋建在坚实的水泥地基上。
Mr Bush also has a much firmer base in Congress.
在国会,布什同样拥有更加坚实的基
His step was not as sharp and firm.
他的脚步不再像从前那样敏捷、坚实。
2. Pursuing a pragmatic approach.
二、坚持务实态度。
They are flashy without substance, brittle without solidity.
华而不实，脆而不坚。
