動燃式低水圧制御水理試験機(動燃式JFT)の原理と適用例
1988 年 30 巻 3 号 p. 127-137
詳細
1988 年 30 巻 3 号 p. 127-137
Resently, It is essentially necessary to obtain the hydraulic parameters of ground water in deep geological environment in order to contribute on the establisment to modelling of regional ground water flow.
However, in-situ test method in the low permeable zone have not been developed. Hence we developed "New PNC Aquifer Test Method" with a single borehole and nonsteady state theory.
This measurmentu nit was developedt o settlment four problem as follows,1 ) To prevent hydraulic destruction,2) Improvement of operating efficiency,3) To measure a pore water pressure in low permeability,4) To measure the coefficient of permeability in low permeable rock bed.
When to make in-situ experiment, w e got a good result.
The minimumc oefficiento f permeability on in-s i tu experiment was 8.5×10-9 c m/sec and the measurement was over within 6 hours
