RETRACTED ARTICLE: Evaluation and research of comprehensive seismic observation technology based on optical fiber sensing

As one of the most important methods in geophysical exploration, seismic exploration is widely used in geological resource exploration, geological disaster early warning, and other fields. Existing seismic exploration instruments mostly use electromechanical geophones for sensing, and electromechanical geophones are point sensors. In oil and gas exploration and natural seismic monitoring, point sensors must be arrayed to ensure the continuity of the seismic wave distribution. There are problems such as difficult deployment and long-term maintenance, and its detection capacity and density are also limited by cost. Optical fiber is both a sensor and a transmission medium. A large number of sensor arrays can be realized by using optical fiber. In exploration applications, only one optical cable needs to be deployed or the existing communication optical cable is directly used, which is relatively low in difficulty and cost. Under the premise of ensuring high-level data and high-density acquisition, it can still achieve a detection length of tens of kilometers, which has important potential application value in the field of seismic exploration where exploration targets are increasingly deep and refined. The seismic prospecting instrument participated in a ground fissure state monitoring test based on an active source in a certain area. In the test, the existing buried and underground fiber optic cables were used to successfully monitor the seismic waves, and the monitoring track spacing reached 4 m; the output waveform that is consistent with the existing geophones is obtained, which shows a higher sensitivity than the existing geophones.