Pneumatic control rock cutting device for rock-embedded pile soft-hard interphase layer

Abstract

A pneumatic control rock cutting device for a rock-embedded pile soft-hard interphase layer can meet the accurate drilling requirement of the soft-hard interphase layer in the rock-embedded pile construction process, and ensures drilling quality meeting design standards. The pneumatic control rock cutting device comprises a rock cutting retaining cylinder, a conical cutting tool system, a toothed cutting tool system, a vibration sensing system, a pneumatic sensing system, a pneumatic bag system, a high-pressure water pipe, a multi-path connector, an isolation spring, a drill rod, a pneumatic controller, a vibration controller, a high-pressure water pump, a cable, power adhesives, a pneumatic flow controller, a pneumatic stabilization bolt, a rubber shock pad, an isolation fastening bolt and retaining pins. The pneumatic control rock cutting device has the advantages that according to the stress condition of soft-hard rock cutting, constant pressure of a drilled soft rock is kept, pneumatic pressure is applied to incompletely cut hard rocks, and the device solves the common problems that a rock-embedded pile easily deviates in construction in the soft-hard interphase layer and a reinforcement cage cannot descend for installation by the aid of the criterion of 'constant pressure-pressurization'.

Description

technical field [0001] The invention relates to a rock-cutting device for a rock-socketed pile, in particular to an air pressure-controlled rock-cutting device for rock-socketed piles with uneven hardness and softness, and belongs to the technical field of rock-socketed pile construction. Background technique [0002] Rock-socketed piles are a pile foundation mode widely used in bridge engineering, port engineering, and construction engineering, and have good bearing capacity. However, during the construction of rock-socketed piles, due to the unevenness of the bedrock, the thickness of the soil and rock layers, and the uneven distribution of hardness and softness, the engineering geological conditions cannot reach the ideal uniform formation, and it is very easy to cause the drill bit to pass through the hard formation. Deviating to the side of the soft ground, the drilling is deflected, the verticality of the hole cannot be guaranteed, the subsequent reinforcement cage can...

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Problems solved by technology

However, this patent is mainly aimed at the soft and hard conditions of loose lunar soil and lunar rocks that frequently change during core drilling of lunar soil...

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