Single-power-source impact rotary compaction drilling construction method and equipment

• Main Authors: GAO ZHIWEI, ZHANG GUANGFENG, YU JINING, YANG XIFENG, ZHU TING, TIAN SHIJUN, LI YONGQING, GOU ZHENDUO, XIN WENDONG, ZHANG RAN, WANG PING, HU JINSHAN, JIANG TAO, SHAO ZHUJIE, WANG YANING
• Format: Patent
• Language: Chinese; English
• Published: 09.06.2023
• 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 relates to a single-power-source impact rotary compaction drilling construction method and equipment. Screw compaction drilling is large in energy consumption, low in efficiency and high in cost in a harder stratum. The equipment comprises an inner pipe, an outer pipe, an impact hammer and a drill bit, the inner pipe is located in the outer pipe, a rod body of the drill bit is connected to the lower end of the inner pipe, and the impact hammer is located at the lower end between the inner pipe and the outer pipe and located above the head of the drill bit; the impact hammer is an annular cylinder, an annular groove is formed in the inner wall of the middle of the annular cylinder, and impact hammer sawteeth are arranged on the upper portion in the annular groove. Inner pipe sawteeth are arranged on the outer wall of the inner pipe and located on the lower portion in the annular groove, and the inner pipe sawteeth are meshed with the impact hammer sawteeth. The device is high in drilling efficien