Self-starting negative pressure drainage system for draining groundwater in slope and construction method thereof
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United States of America
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Mar 3, 2020
Grant Date -
May 23, 2019
app pub date -
Nov 6, 2017
filing date -
Nov 6, 2017
priority date (Note) -
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Abstract
A self-starting negative pressure drainage system for draining groundwater in a slope, includes: a declined borehole, a pipe boot, a permeable pipe and a drain pipe; wherein the declined borehole is divided into a permeable drilling section and a sealed grouting drilling section; wherein the permeable drilling section is on a lower portion of the declined borehole, and the sealed grouting drilling section is on an upper portion of the declined borehole; a water stop ring made of water-expanding rubber is provided between the permeable drilling section and the sealed grouting drilling section; the permeable drilling section comprises the permeable pipe; a top of the permeable pipe contacts the water-expanding rubber; a cavity is formed in the permeable pipe, an inlet of the drain pipe passes through the water stop ring made of water-expanding rubber and is inserted into the permeable pipe.
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