Soil sampling method for ramming pipe

• Main Authors: YANG CHAO, RONG XUEWEN, WANG SHANJUN, SHANG BOMING, LIANG HUI, LI YANFEI, LIU JUNTAO, WANG CHAO, CHEN ZHONGFENG, ZHAO JUNJIE, LIU YU, QI XIPENG
• Format: Patent
• Language: Chinese; English
• Published: 08.10.2021
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention provides a soil sampling method for a ramming pipe, and relates to the technical field of ramming pipe construction. The defects that a worker cannot directly sample soil in a ramming pipe with a smaller diameter, and instruments such as a drill bit of a directional drill are damaged when the instruments sample the soil from the ramming pipe with the smaller diameter are avoided. The soil sampling method comprises the steps of slant ramming of the ramming pipe, opening and closing state change of a soil retaining cover plate, in-place of a soil sampling system, approaching of the soil sampling system to a soil material, soil sampling of the soil sampling system and soil unloading of the soil sampling system. According to the soil sampling method for the ramming pipe, oblique ramming of the ramming pipe and the soil sampling of the soil sampling system are alternately carried out, that is, after the ramming pipe rams a certain distance into a soil layer, the soil sampling system is used for sampl