A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
To enable the measurement of hydraulic conductivity from low permeability ground to medium-high permeability ground with a single permeability test device.SOLUTION: Airtight water tanks for pouring test water in a permeability test device are composed of two sets of airtight water tanks, a first airtight water tank with a small volume located between an outer cylindrical body and an inner cylindrical body using inner and outer double cylinders with different diameters, and a second airtight water tank of large volume located within the inner cylinder. Openings for air inflow and water injection are provided in a lower part of the outer cylinder and a lower part of the inner cylinder, respectively. By connecting the second airtight water tank to the first airtight water tank through the openings for air inflow and water injection in the lower part of the inner cylindrical body, it is possible to measure hydraulic conductivity in low-permeability ground mainly composed of the first airtight water tank, and to measure hydraulic conductivity in medium-to-high-permeability ground in which the first and second airtight tanks are combined.SELECTED DRAWING: Figure 3
【課題】１基の透水試験装置で、低透水性地盤から中高透水性地盤までの透水係数の測定を可能とする。【解決手段】透水試験装置における測定水注水用の気密水槽を、径を異にする内外二重の筒体を用いて外側の筒体と内側の筒体との間に位置する容積の小さい第１の気密水槽、内側の筒体内に位置する容積の大きい第２の気密水槽との２組の気密水槽に構成すると共に、外側の筒体の下部および内側の筒体の下部にそれぞれ空気流入用及び注水用の開口を設け、内側の筒体の下部の空気流入用及び注水用の開口を介して第２の気密水槽を第１の気密水槽に連通させることにより、第１の気密水槽を主とした低透水地盤における透水係数の測定および第１、第２の気密水槽を組み合わせた中高透水性地盤における透水係数の測定を可能にした。【選択図】 図３
To enable the measurement of hydraulic conductivity from low permeability ground to medium-high permeability ground with a single permeability test device.SOLUTION: Airtight water tanks for pouring test water in a permeability test device are composed of two sets of airtight water tanks, a first airtight water tank with a small volume located between an outer cylindrical body and an inner cylindrical body using inner and outer double cylinders with different diameters, and a second airtight water tank of large volume located within the inner cylinder. Openings for air inflow and water injection are provided in a lower part of the outer cylinder and a lower part of the inner cylinder, respectively. By connecting the second airtight water tank to the first airtight water tank through the openings for air inflow and water injection in the lower part of the inner cylindrical body, it is possible to measure hydraulic conductivity in low-permeability ground mainly composed of the first airtight water tank, and to measure hydraulic conductivity in medium-to-high-permeability ground in which the first and second airtight tanks are combined.SELECTED DRAWING: Figure 3
【課題】１基の透水試験装置で、低透水性地盤から中高透水性地盤までの透水係数の測定を可能とする。【解決手段】透水試験装置における測定水注水用の気密水槽を、径を異にする内外二重の筒体を用いて外側の筒体と内側の筒体との間に位置する容積の小さい第１の気密水槽、内側の筒体内に位置する容積の大きい第２の気密水槽との２組の気密水槽に構成すると共に、外側の筒体の下部および内側の筒体の下部にそれぞれ空気流入用及び注水用の開口を設け、内側の筒体の下部の空気流入用及び注水用の開口を介して第２の気密水槽を第１の気密水槽に連通させることにより、第１の気密水槽を主とした低透水地盤における透水係数の測定および第１、第２の気密水槽を組み合わせた中高透水性地盤における透水係数の測定を可能にした。【選択図】 図３
PERMEABILITY TEST DEVICE
透水試験装置
KUBO YOSHINORI (author)
2023-03-27
Patent
Electronic Resource
Japanese
IPC:
E02D
FOUNDATIONS
,
Gründungen
PERMEABILITY TEST DEVICE AND PREDICTION PROCESSING PROGRAM FOR PERMEABILITY TEST DEVICE
| European Patent Office | 2022
Asphalt pavement water permeability test detection device
| European Patent Office | 2024
Autoclaved Water Permeability Test
| British Library Conference Proceedings | 1998