A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PORE WATER PRESSURE GAUGE UNIT
To solve the problem of conventional technique that pore water pressure measurement for multiple aquifers at a landslide location or the like requires an expensive device and drilling of a large-diameter borehole, which incurs costs of drilling and installing pore water pressure gauges.SOLUTION: Pore water pressures of multiple aquifers at different depths in a borehole are measured by providing a pipe through the inside of pore pressure gauges and feeding a composite cable (consisting of power lines and signal lines) for the pore water pressure gauges installed below through the pipe, or measuring pore water pressures inside the pipe and feeding the composite cable for the pore water pressure gauges installed below along the side of the pipe.SELECTED DRAWING: Figure 1
【課題】従来技術では、地すべり地等における複数の帯水層を対象とする間隙水圧の測定には高額の装置が必要であったし、口径が大きなボーリング孔を掘削する必要があり、掘削のための工事費や、間隙水圧計を設置するためのコストがかかっていた。【解決手段】間隙水圧計の内部に、パイプを設け、そのパイプ内に下方に設置する間隙水圧計用の複合ケーブル（電源線や信号線より構成）を通す方法、ないしはそのパイプ内で間隙水圧を測定し、下方に設置する間隙水圧計用の複合ケーブルは内部に備えるパイプの脇を通す方法で、同じボーリング孔の深度が異なる複数の帯水層の間隙水圧を測定する。【選択図】 図１
PORE WATER PRESSURE GAUGE UNIT
To solve the problem of conventional technique that pore water pressure measurement for multiple aquifers at a landslide location or the like requires an expensive device and drilling of a large-diameter borehole, which incurs costs of drilling and installing pore water pressure gauges.SOLUTION: Pore water pressures of multiple aquifers at different depths in a borehole are measured by providing a pipe through the inside of pore pressure gauges and feeding a composite cable (consisting of power lines and signal lines) for the pore water pressure gauges installed below through the pipe, or measuring pore water pressures inside the pipe and feeding the composite cable for the pore water pressure gauges installed below along the side of the pipe.SELECTED DRAWING: Figure 1
【課題】従来技術では、地すべり地等における複数の帯水層を対象とする間隙水圧の測定には高額の装置が必要であったし、口径が大きなボーリング孔を掘削する必要があり、掘削のための工事費や、間隙水圧計を設置するためのコストがかかっていた。【解決手段】間隙水圧計の内部に、パイプを設け、そのパイプ内に下方に設置する間隙水圧計用の複合ケーブル（電源線や信号線より構成）を通す方法、ないしはそのパイプ内で間隙水圧を測定し、下方に設置する間隙水圧計用の複合ケーブルは内部に備えるパイプの脇を通す方法で、同じボーリング孔の深度が異なる複数の帯水層の間隙水圧を測定する。【選択図】 図１
PORE WATER PRESSURE GAUGE UNIT
間隙水圧計ユニット
YAMAUCHI TSUNEO (author) / NIWA SHOJI (author)
2023-03-08
Patent
Electronic Resource
Japanese
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