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Lowering groundwater level by digging pit and pumping out water, by sealing pit airtight and creating vacuum inside it using vacuum pump
Lowering groundwater level by digging pit and pumping out water, by sealing pit airtight and creating vacuum inside it using vacuum pump
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机译:通过挖坑和抽水,通过密封不透气的坑并在内部使用真空泵产生真空来降低地下水位
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摘要
The pit (23) is sealed airtight and a vacuum is created inside the pit space using a vacuum pump (27). The pit is at least partly permeable, the permeable portion of the pit being located in the ground. A pump placed inside the pit is used to remove water from it. An independent claim is also included for a system (21) comprising an at least partly permeable pit containing a pump (25) at the bottom, a removable cover (33) for sealing the pit airtight and a vacuum pump (27).
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