Underground Powerhouse Caverns of Jurong Pumped Storage Power Station Analysis of Safety Monitoring Results

Abstract

The surrounding rock structure of the underground powerhouse of Jurong Pumped Storage Power Station is complex, with unfavorable geological conditions such as argillaceous dolomite bands, karst caves and corrosion fissures. This paper introduces the monitoring instruments and burial arrangements of the two caverns of the main and auxiliary power houses and the main transformer room. Combined with the monitoring results of the two caverns during the construction period, the deformation of surrounding rock and the magnitude of anchor load are analyzed. The results show that the arrangement of the columns between the caverns is reasonable. Compared with the monitoring results of other similar projects, the surrounding rock of the underground powerhouse of Jurong Pumped Storage Power Station is basically stable, with small deformation, and the deformation control measures are reasonable and effective.