Mechanical drilling slot depth measuring device and slot depth measuring method

The invention belongs to the technical field of coal mine gas treatment, and particularly provides a mechanical drilling seam groove depth measuring device and a seam groove depth measuring method.The mechanical drilling seam groove depth measuring device comprises an outer pipe, an inner pipe and a...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LI YANZENG, ZOU, YONGMING, ZHAO XIAOLIANG, SHI YONGSHENG, HUANG HE, ZHANG WENKE, ZHAO XIN, WANG KAIWANG, XUE WEICHAO, NIE RONGSHAN, CAO YAOLIN, CHENG SHIYI, ZHOU RUI, GUO ZHONGWEI, SU WEIWEI, LIU BOWEI, HAN BING, MA JINKUI, XU XINGFU
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS TESTING
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