| 摘要 |
PURPOSE:To raise the pressure feeding efficiency of soil by a method in which a soil pressure detector is provided with a fixed distance in the neighborhood to the tank of a pressure feeding pipe connected to the tank pressure losses during the soil pressure-feeding period are calculated, and on the basis of the calculation results, the amount of a tackifier to be charged is determined. CONSTITUTION:A soil trap tank 2 has a pressure-feeding pump 1 on its one side, a soil pressure-feeding pipe 3 on the other side, and a soil inlet and a tackifier supply port 5 in its upper part. In the neighborhood of the soil trap tank 2 side of the pipe 3, the first and second soil pressure detectors 8 and 20 are provided to the pipe 3 with a fixed axial distance L. Pressure losses due to the pressure difference of both the detectors are detected by an arithmetic unit 21, and on the basis of the pressure losses, the amount of a tackifier to be charged is adjusted by using a charger 11. The exactness of the charging amount of the tackifier can thus be enhanced. |
