The paper introduces the construction procedure, treatment of collapse hole and quality inspection.

文章介绍了施工程序，塌孔处理和质量检查。

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The impervious wall of this project is located in water bearing sand and gravel, the collapse hole takes place due to some factor affect, the deep well lower water level measures are adopted.

本工程防渗墙在富含水砂卵砾石地层施工中，由于各种因素引起严重塌孔，施工中采用了深井井上降水措施。

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The dark matter star would collapse into a black hole. "Then the neutron star won't be able to survive anymore, and it'll collapse too," says Fairbairn.

“暗物质恒星就会坍塌成为黑洞，然而，在这个时候，包围它的中子恒星不能再存在下去，也会跟着一起坍塌”，费尔贝恩说。

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The authority said it was using clay to plug the 13ft (4m) wide hole, caused by the collapse of a mine shaft.

BBC: Stoke-on-Trent mine collapse drains lake

If you were to assume that every point in the universe contained some information, then even a small office would be so densely packed with particles that it would collapse in on itself like a black hole, says Raphael Bousso, a physics professor at the University of California, Berkeley.

FORBES: Flatland?

That's why an event such as GRB130427A probably signals the collapse of a massive star into a black hole.

CNN: Why gamma-ray burst shocked scientists