Title:
CONDENSATION PROCESS AND WATER FILLING CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2548066
Kind Code:
B2
Abstract:
PURPOSE: To automatically determine an optimum water filling pressure for maintaining the underground water level by controlling a compressor so as to increase the water filling pressure from its initial water filling pressure, and estimating convergence values of the water volume, the water level raising volume, and the time with the use of a hyperbolic process in accordance with initial data concerning water volumes, water level raising volumes and the times at respective water filling pressures so as to recognize a clogging phenomenon.
CONSTITUTION: A compressor is controlled so as to increase the water filling pressure from its initial filling pressure a specific value by a specific value. Further, convergent values of a water filling volume and an observed water level raising volume are estimated by a hyperbolic process in accordance with initial date relating to water volumes, water level raising volumes and times at respective water filling pressures by means of a personnel computer. Thus, the condensation is indicated from a water filling pressure P1 at a time when the convergent values (Qfi, Δhfi) exceeds desired values (Qrew, Δhreq). Accordinqly, a clogging phenomenon is recognized, thereby it is possible to automatically determine an optimum water filling pressure (Ps) for maintaining the level of underground water around a job site.
Inventors:
ONIKI KOICHI
KAWABATA JUNICHI
SASAKURA TAKESHI
SEO SHOJI
KAWABATA JUNICHI
SASAKURA TAKESHI
SEO SHOJI
Application Number:
JP2482393A
Publication Date:
October 30, 1996
Filing Date:
January 20, 1993
Export Citation:
Assignee:
KAJIMA CONSTRUCTION CORP
International Classes:
E02D19/10; E02D3/10; (IPC1-7): E02D3/10; E02D19/10
Attorney, Agent or Firm:
Kubo Tsukasa