Scholarly record

DEPTH PROFILING AND SOLVING OF GEOTECHNICAL ENGINEERING PROBLEMS BY MEANS OF ONE-CHANNEL REFLECTION SEISMIC

V. B. Vladimirov

Abstract

The subject of this paper is to present an efficient method for exploration of surface beds by means of one-channel reflection seismic. Two-step algorithm based on simplified seismic diffraction theory is used for processing of the field data. During the first step the registered wave field is re-calculated with specialized software taking into consideration definite assumptions for the environmental model. During the second step the so re-calculated wave field is transformed using Phase Shift Migration method. As result of step 1 and 2 the deep section, linked to the relief, is obtained, on which events, fault and normal slips can be identified. The depth of the basement can also be identified. Sliding surfaces, if present, will also be determined. Examples for solving structural geo-mechanical problems on some landslides along Bulgarian Black Sea coast are shown in the attached graphics. Events up to 50 meters depth were identified. The possibilities for fast and efficient field measurements, including processing and interpretation of the data, make the method very suitable for site surveys for nuclear power stations (NPS) construction sites, purifying stations, waste deposits as well as for linear objects such as oil and gas pipelines.

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