The invention belongs to the technical field of
rock core drilling and sampling, and particularly relates to a
rock core drilling and sampling device for
engineering detection and an operation method of the
rock core drilling and sampling device. Comprising a base, a
drill rod is arranged on the base, a sampling rod is fixedly connected to the bottom end of the
drill rod, a
drill bit is fixedly connected to the bottom end of the sampling rod, a first opening and a second opening are formed in one side of the sampling rod and communicate with an inner cavity of the sampling rod, a first plugging
assembly is arranged at the first opening, and a second plugging
assembly is arranged at the second opening. A second plugging
assembly is arranged at the second opening, a bottom plate is fixedly connected to the interior of an inner cavity of the sampling rod, a
rotating disc is arranged above the bottom plate, and sampling pipes are evenly placed in the
rotating disc; through structures such as the first motor, the first sleeve, the second sleeve, the third sleeve, the
rotating disc and the sampling
pipe, soil at
multiple target depths can be sampled in the one-time drilling process, the tedious process of repeated drilling and sampling is avoided, and the working efficiency is improved.