The main problems of the earth and rock excavation is discussed and the writer's opinions put forward.

探讨了土石方开挖的主要技术问题，并提出作者的见解。

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The observation result of vibration is rational either in middle shallow blasting or in rock excavation near the dam.

不论是中部浅孔爆破，还是大坝近区岩体开挖，其振动观测结果总体合理。

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The plinth foundation excavation work was divided by two stages the first one was ordinary excavation, the second one was rock excavation.

趾板基础开挖分两期进行，一期为一般开挖，二期为岩石开挖。

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For example, contractors submitted invoices that charged Con Edison for the cost of removing rock at an excavation site that never existed.

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The work had complicated access to the street-corner restaurant, and a server needed hospital treatment in 2006 after she was struck by a rock sent flying by blasting for excavation of the construction site.

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Dredging: excavation, digging, scraping, draglining, suction dredging to emove sand, silt, rock or other underwater sea-bottom material.

UNESCO: L O S S A R Y