The stability of drilling chamber is an important facet to ensure the safe operation of VCR mining method.

凿岩峒室的稳定性是VCR采矿法安全的重要保障。

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In 2008 workers doing exploratory drilling for a geothermal plant reported that they had accidentally broken through to a shallow magma chamber near the Big Island's Kilauea volcano.

2008年，工人们在为一家地热电厂进行勘探钻井时，发现他们无意之间穿透了大岛基拉韦厄火山附近的一个浅表岩浆库。

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Rescue teams are drilling three additional boreholes more than 330 meters deep to ventilate toxic gases and reach a six-meter-wide chamber where officials believe the miners are.

救援队正在向330多米深的井下钻探另外三个深孔，以排出有毒气体，然后到达一个六米宽的井室，有关官员认为四名矿工就困在这个井室。

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Powerful Assembly Speaker Sheldon Silver says he plans an announcement Wednesday to halt the issuing of specific natural gas drilling permits until May 15, 2015.. His chamber already calls for a two-year moratorium.

WSJ: NY senators seek fracking delay to await key study