This paper introduces the groundwater measurement technique using the Swedish Weight Sounding (SWS) test holes and a foraminate pipe. This new technique has advantages that the steady groundwater level can be measured in a very short time (within the SWS test time in home site ground).The accuracy was found to be satisfactory.
The Swedish Weight Sounding (SWS) test is a simple but popular method for evaluating the ground bearing capacity in home site, and it is required in Japan by law to check the harmful subsidence and displacement of buildings caused by liquefaction due to earthquake. The authors focused on the groundwater level for the liquefaction evaluation and developed a new measurement technique using the SWS test hole and a foraminate pipe. In this paper, results of in-situ experiments using the new technique are described.
In Japan, the possibility of liquefaction of the ground surface is classified to three categories such as Large (L), Medium (M), and Small (S). Those are determined by the topographical map and geographical features of the site as shown in Fig.1 and Table 1 (AIJ, 2008). However, since the groundwater level is essential information when considering the possibility of liquefaction, the development of the simple monitoring method is necessary. (figure 1 shown in paper) (table shown in paper)
(figure 2 shown in paper)
As shown in Table 2, measuring the groundwater level using the SWS test hole is not established at present, and it is significant to develop the new technique. Technique for Measuring the Groundwater Level Using SWS Test Hole - Penetration and measurement of 10m deep in ground are possible.
