Wellhead rock core containing and splitting device and application method thereof

Abstract

The invention discloses a wellhead rock core containing and splitting device and an application method thereof and belongs to the field of geotechnical engineering investigation. The wellhead rock core containing and splitting device comprises a main body bracket device and a rock core splitting device, wherein a main body bracket is composed of an outer sleeve, an inner sleeve, a front bracket, arear bracket, a rear baffle plate, a water baffle plate and a guide rail; the inner sleeve is in sleeve joint with the outer sleeve to form a coaxial U-shaped pipe for storing a rock core when the rock core is knocked out; the rock core splitting device is composed of a cutter, a sliding block and a fastening bolt; the sliding block sleeves the guide rail, can slide freely and can split the rockcore by utilizing the cutter at any position. The wellhead rock core containing and splitting device disclosed by the invention can be used for effectively improving the quality of the rock core and the layering precision of the rock core, and the labor intensity of moving the rock core is reduced; the requirements on flatness of a field and area of the field are reduced; work of paving waterproofcloth or hard wood plate before working is avoided and the workloadof recovering an original shape of the field after working is reduced.

Description

technical field [0001] The invention belongs to the field of geotechnical engineering investigation, and in particular relates to a wellhead rock core holding and cutting device and a using method thereof. Background technique [0002] In geotechnical engineering investigation, in order to obtain the stratum distribution of the site to be investigated, it is necessary to drill and take cores at the arranged exploration points and record them. During the drilling and coring process, when the drill bit drills to the specified depth, the operator unloads the drill pipe, lifts the core tube out of the wellhead, removes the core tube, connects the top of the core tube to the water pipe, and uses the pressure of water to move the rock The core in the core tube is punched out onto a tarp or plank laid on the ground. After the core is completely flushed out, the operator uses a shovel to cut off the core, and transports the core to the core box. The cataloger names the soil layer ...

AI Technical Summary

Problems solved by technology

[0004] 1. During the core rushing process, the core rubs against the waterproof cloth or hardwood board laid on the ground, causing the core to twist or even bend, and sometimes it is difficult to distinguish the upper and lower relationship of the bent core;

[0005] 2. After the core is punched out, the operator cuts the core with a shovel and transports it to the core box. The length of the core box is 1m. to 1m or greater than 1m, which will cause errors in stratum stratification depth when recording;

[0006] 3. The artificially cut rock core is placed on the ground, and the operator needs to bend over to transport it to the core box. The work intensity is relatively high, and the core may break during the handling process.

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