Integration of Spherical 360° Panoramic Virtual Tour with Assessment Data for Risk Assessment and Maintenance of Tunnel and Cavern

摘要

Construct a tunnel is a challenge to nature. It releases stress by drilling and sometimes blasting different rock formation. Once it is constructed, existence of water seepage infiltrated through weakest formation of rock has developed distresses that become one of common problems in underground structure. This paper presents development a web based distress mapping application using visual assessment, non-destructive assessment and utilizing 360° spherical panoramic images to give real visualization experience tunnel and cavern of underground hydroelectric power plan. In developing the application, the virtual tour engine from krpano and scripting language Java Script were utilized. Statistical analysis on the condition of the distress was also discussed. The developed system is used to improve human experience on the assessment processes at location of distresses. By using this system, the assessment can be recorded into the database easily using any smart device with HTML browser capability and assist safety officer, engineers and tunnel owner to decide appropriate mitigation of maintenance and/or repair in order to prolong service life of the tunnel and caver of the hydroelectric power plan.