TRANSITION AND VALUE OF THE WELL STRUCTURE OF TATSUGAIKE IRRIGATION PUMP STATION AS CIVIL ENGINEERING HERITAGE

Abstract

 Tatsugaike irrigation pump station, located in Toyosato Town, Inukami County, Shiga Prefecture, has the original of “masonry well” which is still in use for irrigation. In this study, the condition of the existing facilities of Tatsugaike pump station was investigated based on a field measurement survey, and the history of well renovations was clarified based on the primary historical resources. As a result, it was confirmed that the well structure and water utilization system have been inherited though the well has been renovated many times due to lack of water, rising water level and aging of its wooden components. In particular, the stone wall and the second wooden frame of the well are the original parts and extremely valuable. The third wooden frame, which was constructed in a later period using the same construction method and materials as the other wooden frames, is still in good condition.