Cable coring rig and drilling method using the same

Abstract

The invention relates to a cable coring drilling rig, comprising: a base, a main machine, a drilling tool, a drill pipe and a steel cable coring system, the main machine is installed on the base, the base can adjust the installation angle of the main machine, the drill pipe is installed on the main machine, and the main machine It is used to drive the rotation and feeding of the drill pipe. The front end of the drill pipe is fixedly connected with the drilling tool, and the rear end of the drill pipe is connected with the steel cable coring system. The rotary axis of the drill tool is in line with the rotary axis of the drill pipe. The host includes: Box-type feeding frame; power head base; feeding oil cylinder, which is installed on the box-type feeding frame to drive the power head base to move freely along the length direction of the box-type feeding frame on the box-type feeding frame; The power head, the power head clamps the drill pipe to drive the drill pipe to rotate. The present invention also provides a drilling method using the steel cable coring rig. The bedrock is drilled in the horizontal direction or at a small angle, which is used to replace the trench well prospecting that relies on large-scale excavation of earthwork.

Description

technical field [0001] The invention relates to the field of prospecting technology, in particular to a cable coring rig and a drilling method using the cable coring rig Background technique [0002] Geological trench prospecting is one of the most commonly used methods for geological prospecting. The method is to use manpower or machinery to dig a certain length on the surface at a certain orientation, and pass through the overburden layer to reach a 0.3m long trench in the bedrock. The depth is generally not more than The surface width is generally calculated based on the depth of the trench at 1:1 grading, and rock samples are carved from the bedrock, and then geological prospecting or mineral anomaly verification is carried out after the geological technicians record and describe, sample analysis and other work. [0003] Geological shallow well prospecting is also one of the more commonly used methods for geological prospecting. The method is to use manpower or machinery...

AI Technical Summary

Problems solved by technology

[0005] 1. The primary problem of slot well exploration in woodland and cultivated land is that it must destroy forest land and cultivated land, and destroy the ecological environment. Even if backfilling and vegetation restoration are carried out immediately after completion, the environmental restoration will take several years to decades or longer;

[0006] 2. In addition to paying its own construction costs, trench well exploration construction also needs to pay land use fees, forest land and cultivated land occupation fees, tree and young crop compensation fees, forest and cultivated land restoration fees and other large expenses, which make the prospecting cost continue to increase;

[0007] 3. There are safety risks in the well exploration construction. In recent years, there have been accidents of casualties due to the collapse of the side slope of the well exploration;

[0008] 4. When excavating shallow wells, wooden frames or other measures should be used for support according to the stratum conditions. When there is groundwater, drainage is required. The construction process is complicated, the construction difficulty and safety risks are relatively large, and the cost is relatively high;

[0009] 5. Trenching is very difficult or impossible to construct in areas with overburden greater than 3m, and because entering the bedrock requires human judgment, this will lead to relatively complete residual slope layers and weathered layers being mistaken for bedrock, and there are sampling locations Not in place, causing prospecting errors

[0011] 1. Because the drilling rig is basically designed to drill at a large angle of 90° or more than 45°, the horizontal projection of the core obtained is much smaller than the vertical projection, which cannot achieve the effect of replacing the trench well

[0012] 2. Surface drilling needs to be drilled in shallow collapsed and broken strata. General drilling rigs cannot guarantee normal operation in this stratum and cannot guarantee the rate of core recovery.

[0013] 3. The existing bedrock shallow drilling rigs cannot be popularized and applied on a large scale due to poor construction environment conditions, frequent site changes, low efficiency, high cost and difficult construction

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