borehole
钻孔,钻井,井眼,井口
Definitions
- 1
Mining.
- : a hole drilled in the earth, as for the purpose of extracting a core, releasing gas, oil, water, etc.
Examples
A company drilling for natural gas 2 miles below the surface on the island saw a borehole suddenly lose pressure before filling with liquid.
When the petroleum company that had drilled many of these wells folded in the 1990s, as many did when crude prices bottomed out after the Gulf War, the open boreholes left behind became the responsibility of the state.
To that end, they have tunneled kilometers below Earth’s surface, drilling outward from the bottoms of mine shafts and sinking boreholes deep into ocean sediments.
Until a final resting place can be decided, temporary repositories—like the Holtec facility or Deep Isolation’s proposed boreholes—are appealing options for corralling the waste.
A small charge of high explosives is then pushed up to the end of the borehole and fired.
This of course cannot be seen in a borehole or very small section.
The borehole is charged with the explosive to be fired, and the temperature is regulated by means of the steam pipe.