Abstract
In this paper, the method of combining high-density electrical exploration and borehole joint profile is used to explore the Dancun-Longyang town fault at the LNG peak shaving station and gas supply pipeline engineering site of Luyang lake. The distribution and activity of the fault are determined, providing a basis for seismic fortification and seismic geological disaster evaluation in the line
Highlights
Dancun-Longyang town fault is a part of the Fufeng-Liquan-Fuping fault, which has a certain control effect on the formation and Cenozoic sedimentation of Weihe basin (Xu Yujian, 1988; Deng Qidong, 1999; Tian Qinjian, 2003; Ren Jun, 2013, etc.)
The gas supply pipeline is laid to the northeast after leaving the station from the Luyang lake off load station, passing through x313 county road and the second branch of Luohui west trunk canal, and to LNG peak shaving station through Beizhang village, with a total length of about 8.8 kilometers (Figure 1)
Eight boreholes have been drilled in the ZK1-1 ˊ drilling exploration profile in the east of Beizhang village, with the single hole depth controlled at about 50m, the maximum hole spacing of 101m and the minimum hole spacing of 7.5m (Fig. 4)
Summary
Dancun-Longyang town fault is a part of the Fufeng-Liquan-Fuping fault, which has a certain control effect on the formation and Cenozoic sedimentation of Weihe basin (Xu Yujian, 1988; Deng Qidong, 1999; Tian Qinjian, 2003; Ren Jun, 2013, etc.). The project of “Seismic Microzonation of Weinan City” (Shaanxi Engineering Seismic Survey and Research Institute, 2011) and “Seismic Microzonation of Xianyang City” (Shaanxi Engineering Seismic Survey and Research Institute, 2011), and other projects have done a lot of work on the Dancun-Longyang town fault. According to the analysis of previous data, the Dancun-Longyang town fault is distributed in the slope area on the south side of Luyang lake and intersects with the proposed gas supply pipeline. In this paper a combination of high-density electrical method exploration and borehole joint profile is used to conduct a detailed exploration of the Dancun-Longyang town fault in the site, to accurately determine the intersection of the fault and the gas supply pipeline, and to provide a basis for the engineering seismic work of the site
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