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- Keywords mining engineering;following-vein drift;non-pillar;sublevel caving;rock digging bourn;optimization; 采矿工程;沿脉进路;无底柱;分段崩落;开岩边界;优化;
- Keywords following-vein drift;non-pillllar;sublevel caving;rock digging bourn;optimization; 沿脉;无底柱;崩落法;开岩边界;优化;
- rock digging bourn 开岩边界
- The chamber blasting with bar charges is used in rock dig of openpit, railway road, hydroelectric industry and other projects. 条形药包峒室爆破广泛用于矿山露天的剥离,铁路、公路、水电等基建工程土石方的开挖。
- Pre-spiltting technology of crevice cut rock digging 节理岩体深路堑预裂爆破开挖技术
- They are digging through the hill to make a tunnel. 他们正在凿山建一条隧道。
- She started digging the garden with a will. 她在园子里起劲地翻起土来。
- It is not easy to dig out the past. 发掘过去的历史是不容易的。
- People would not dig down for such a performance. 人们不愿意为这样的演出掏腰包。
- Ten soldiers were told off to dig ditches. 十名战士被分派去挖沟。
- The rock was honeycombed with passages. 岩石上有许多蜂窝状的小孔。
- I forgot to dig a trench around the tent. 我忘了在帐篷四周挖一条沟。
- 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。
- The climber had to negotiate a steep rock face. 那攀登者得攀越一陡峭岩石。
- Newspapers love to dig up scandal. 报纸就是爱把丑事儿揭出来。
- They toiled all day digging the trench. 他们整天艰苦地挖壕沟。
- This layer of rock contains a lot of flint. 这一岩层中有大量燧石。
- He is digging into Chinese history. 他正在钻研中国历史。
- They are digging trenches to drain the water off. 他们正在掘沟排水。
- The water had worn a channel in the rock. 水把岩石冲出了一条沟。
