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- rock drift blasting 岩巷爆破
- According to lab model experiment and theory analysis,the rational delay intervalof millisecond blasting used in rock drift excavating was acquired and a new type of long millise-cond delay detonator was researched and manufactured. 根据实验室模型试验和理论分析得出岩石巷道掘进微差爆破合理延迟间隔时间，据此研制出新型长延迟毫秒雷管。
- This paper introduces the application about anchor cable jetting combined supporting in broken soft rock drift. 重点介绍了锚索喷注联合支护在碎胀软岩巷道掘进中的应用。
- The deformation and stability mechanisms of pelitic soft rock drift under rich water condition are more complicated than those of the general ones. 富水条件下泥质软岩巷道破坏及稳定性机制比一般软岩巷道更复杂;不仅需要采用多种复合支护控制围岩非线性大变形;还必须进一步控制其泥化进程.
- Working practices in rock drifts show that the selected slit-charge directed fracture blasting method is feasible,it opens u... 经岩巷生产实践表明：所选择的切缝药包定向断裂爆破方法是可行的，它为改革现有光面爆破技术提供了良好的应用前景。
- Application of directional breaking blasting technology and concrete additive in rock drift excavation 定向爆破技术与混凝土外加剂在岩巷掘进中的应用
- Considering the simple equipment and relatively lagged technique,a way of substituting coyote blasting for small diameter drifting blasting is introduced in this paper. 结合小型采石场设备简单、工艺相对落后的实际,介绍了一种采用硐室爆破替换其小直径钻眼爆破的方法,并对药室的布置及起爆网路作了阐述。
- The principle and engineering practice of directional breakage controlled blasting in rock drift 岩巷定向断裂控制爆破原理及工程实践
- Adopting the rhombus cut and the mid- deep - hole smooth blasting technology to realize fast heading in rock drift 采用直眼菱形掏糟中深孔爆破技术实现岩巷快速掘进
- Keywords Rock drift directional fracture blasting stress field around boreholes Cirumferential controlled blasting; 岩巷定向断裂爆破;炮孔应力场;周边控制爆破;
- Soft Rock Drift Supporting Technique in Highland Stress 高地应力软岩巷道支护技术
- I didn't get the drift of his argument. 我没有听懂他论点的要领。
- I can't quite catch the drift of his speech. 我不甚了解他的演讲的大意。
- The rock was honeycombed with passages. 岩石上有许多蜂窝状的小孔。
- There is a drift of farmers to the cities. 农民流向城市。
- Many young rock hounds grow up to be geologists. 许许多多爱好收集岩石的少年，长大后成了地质学家。
- Application of supporting technology at soft rock drift 软岩巷道支护技术及在实践中的应用
- The climber had to negotiate a steep rock face. 那攀登者得攀越一陡峭岩石。
- They're trying to blast away the face of this rock. 他们试图炸掉这块岩石的表面部分。
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
