Ice core borehole opening protection device

A protection device and ice core technology, which is applied in the direction of extracting undisturbed rock core devices, earthwork drilling, etc., can solve the problems that ice core drilling rigs cannot drill down, waste of manpower and material resources, and blockage of ice core drilling, so as to improve efficiency, The effect of reducing waste and reducing friction

Pending Publication Date: 2018-03-30
COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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Problems solved by technology

Due to the small diameter and deep depth of the ice core drilling hole, it is difficult to remove the object from the hole, resulting in blockage of the ice core drilling hole, and hard objects may damage the cutter head of the ice core drilling machine, making the ice core drilling machine unable to drill down On the other hand, the ice core drilling machine will also be stu...

Method used

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  • Ice core borehole opening protection device

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Embodiment Construction

[0011] The ice core drilling rig used in the present invention is a light drilling rig (model: BZXJ-ⅡD) specially designed for extreme conditions in high mountains. The height of the drilling frame of the light drilling rig: ~3 m, the weight of the drill bit: 21 kg, and the length of the drilling barrel: 1.75 m , Drilling ice core diameter: 94-95mm, single drilling ice core length: 0.7-0.8 m, motor power: 0.3 kW, power supply: 220 V, 2 kW AC gasoline generator, cable (model: 4H-181A ) Length: 300 m, cable diameter (4.72 mm), drilling depth: 200-250 m. The connection method of the drilling rig is as follows: after the cable is drawn out from the winch, it is connected to the drill bit through the pulley on the drill stand. Down.

[0012] The technical scheme of the present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0013] Such as figure 1 As shown, an ice core drilling opening protection device is composed of a slot p...

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Abstract

The invention relates to an ice core borehole opening protection device. The ice core borehole opening protection device is structurally characterized in that the peripheral edges of a trough plate are bent downwards, and the trough plate is of a rectangular box-shaped structure and covers an ice core borehole; holes are formed in the four corners of the trough plate, and steel chisels pass through the holes to fix the trough plate to the glacier surface; a steel ring is fixed to the center of the trough plate and is opposite to the center of the borehole; a cap covers the steel ring; and a hole and a notch are formed in the cap, and when an ice core is drilled, a cable connected with a drill bit is placed in the hole through the notch. The structure is simple, the design is reasonable, blocking of the ice core borehole, damage to an ice core drilling machine and jamming of the ice core drilling machine due to the fact that tools fall into the ice core borehole in the ice core drillingprocess can be avoided effectively, it is guaranteed that ice core drilling work is conducted smoothly, and waste of manpower and material resources is reduced.

Description

technical field [0001] The invention relates to an ice core drilling opening protection device, which can prevent objects from falling into the ice core drilling hole to block the ice core drilling hole, damage or even block the ice core drilling machine during the operation of the drilling machine, and ensure the safety of the ice core drilling work. went well. Background technique [0002] Ice core drilling is a hole formed by continuously drilling multi-section ice cores vertically downward from the glacier surface with an ice core drilling rig and lifting the ice cores to the ground. The ice core drilling extends from the ice core drilling opening on the glacier surface to the Bedrock at the bottom of a glacier. When drilling ice cores, the ice core drilling machine drills and extracts the ice cores by descending and lifting the ice core drilling machine support and cables located on the upper part of the ice core drilling hole through the ice core drilling opening fo...

Claims

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Application Information

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IPC IPC(8): E21B25/00
CPCE21B25/00
Inventor 刘亚平侯书贵徐建中李传金杜志恒张王滨
Owner COLD & ARID REGIONS ENVIRONMENTAL & ENG RES INST CHINESE
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