The invention provides a multifunctional high-pressure
water jet-PDC tooth combined rock-breaking experiment
drill bit. The
drill bit comprises a
drill bit body and clamping devices. A plurality of clamping device installation grooves are formed in the upper end face of the
drill bit body, the clamping devices are installed in the clamping device installation grooves respectively, the clamping devices are detachably provided with
cutting teeth, and the relative angles and the positions of the clamping devices and the installation grooves are adjustable.
Rock breaking behaviors and efficiency of individual teeth and the
drill bit under different teeth distribution
modes can be researched, the use efficiency of the
drill bit is improved, and the experiment cost is reduced. Nozzles can be detached, whether jet nozzles are installed or not can be determined according to requirements, and
jet flow channels at different angles are machined in different nozzles, so that efficiency during rock impacting and rock debris carrying relative to different jet angles of tooth pieces is researched. The
jet flow channels are machined in the two sides of each tooth piece on the drill bit body respectively, so the nozzles can be installed at different relative positions of the tooth pieces to research the influence of the PDC tooth and
water jet relative position matching relationship on
rock breaking.