In-hole standard penetration test device for fixed-distance top-drive drop hammer and use method of in-hole standard penetration test device

• Main Authors: MA RUI, XIE FEI, CAI YONGSHENG, LIANG ZHENNING, WANG MEIYUN, LIU CHAO, JIN ZONGCHUAN, ZHANG JING, SHEN MENG
• Format: Patent
• Language: Chinese; English
• Published: 09.01.2024
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The invention discloses an in-hole standard penetration test device for a fixed-distance top drive drop hammer and a use method, and the device comprises a penetration unit which comprises a penetration soil sampler and a penetration probe rod; the driving unit comprises a packaging shell, a power module, a lifting module and a heavy hammer, the packaging shell is arranged above the penetration unit, the power module is installed in the packaging shell and connected with the lifting module, the lifting module is connected with the heavy hammer, and the jacking height of the lifting module is the same as the falling distance of the heavy hammer; the sealing unit is arranged on the outer side of the driving unit, and the sealing unit is used for sealing the driving unit; and the intelligent control terminal is used for measuring and controlling the penetration depth of the penetration unit and the hammering times of the heavy hammer. Standardized and automatic hammering can be achieved at the hole bottom, and t