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Abstract: mining jobs in the open air and underground mining. Labour is big, bad working conditions, poor safety, not easy to realize comprehensive mechanized and automation, reason need to pay special attention to improve labor protection and environmental conditions. In the complex geological conditions, the strata broken mining area, there are some exploration problem, the breakthrough type DTH hammer reverse circulation continuous core (sample) drilling technology prospecting construction, and have achieved good effect. This method has high drilling efficiency, rock ore samples taken rate is high, drilling quality advantages, which can effectively solve the problem of the mall broken strata drilling.
Keywords: complex formation; Drilling technology; prospecting
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