| 摘要 |
A method for forming caves on a construction, including steps of: preparing an envelope corresponding to the cave to be formed on the construction. Filling a fluid such as a gas or a liquid into the envelope to form a solid envelope; embedding the envelope in the construction to be grouted to define a grouting mold cavity. Deflating or draining the envelope of the fluid after a filling filled in the grouting mold cavity is hardened to achieve a construction with the caves.
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