Abstract—A study on a railway tunnel in the area of Karangkates, Sumberpucung Subdistrict, Malang District, Indonesia, had been undertaken. This study aims to detect cracks that may have been filled with water from rain that can be fatal to the power of the tunnel. This research was conducted with the active geophysical methods, namely resistivity geoelectrical dipole-dipole configuration (pseudodepth section). Interpretation of the data acquisitions was made after further processing. With the merge for each pseudodepth section, it will be obtained a physical description of the target (tunnel). The results showed that, rock solid structure (red) is located at the bottom of the tunnel (rail), while at the top and sides of the tunnel, which is lithologic structure, is relatively less dense (blue). It is estimated that the are cracks as well as the distribution of the lens on the ground subsidence above the tunnel. Another thing is the carrying capacity of the tunnel is dominated by the presence of cast concrete that is located on the side walls and top of the tunnel. But the cracks in the top and sides must be taken into account to avoid the danger of a more fatal in the future, because it was pretty crowded tunnel, as trains passed from Malang to Blitar cities, and in one of the top of the tunnel is the path Malang – Blitar buses.

Index Terms—Railway tunnel, geophysical resistivity, dipole-dipole, pseudodepth section, Malang, Indonesia.

Cite:A. Susilo, Sunaryo, and Wasis, "Subsurface Structure Prediction of Railroad Tunnel in Malang, Indonesia Based on Dipole-Dipole ," Journal of Traffic and Logistics Engineering, Vol. 1, No. 2, pp. 238-242,  December 2013. doi: 10.12720/jtle.1.2.238-242