Gas reverse circulation drilling technology for large-diameter DTH hammer

Large diameter DTH hammer is a drilling tool which has been proved by a lot of engineering practice and can improve the construction efficiency of large diameter drilling on mine surface. However, after drilling into the aquifer, the penetration rate of large diameter drill hammer is often slow or...

書誌詳細
出版年:	Meikuang Anquan
第一著者:	ZHAO Jiangpeng
フォーマット:	論文
言語:	中国語
出版事項:	Editorial Office of Safety in Coal Mines 2023-06-01
主題:	large-diameter dth hammer gas drilling reverse circulation drilling mine engineering drilling large-diameter drilling for mine rescue
オンライン･アクセス:	https://www.mkaqzz.com/cn/article/id/8449

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