摘要
Through manual pickup of seismic phases,the number of recording stations,the farthest observation distance of station and received energy are determined,then optimal operating condition processing software is developed to evaluate the excitation effect of operating conditions. The optimal operating conditions in the Mianhuatan Reservoir are determined using this software. They are: optimal water depth 25 m,airgun array sink depth 9m and airgun array size 7m × 7m. At the same time,accumulative stacking results for every 10 times are analyzed for 300 fixed-point excitations. It is concluded that the excitation effect shows a rapidly rising trend at 10 to 90 times stacking,a slowly rising trend at 100 to 150 times stacking,a rapidly rising trend at 160 to 240 times stacking,and a slowly rising trend at 250 to 300 times stacking. As the number of stacking increases,the propagation distance and the number of recording stations also increase gradually.
Through manual pickup of seismic phases, the number of recording stations, the farthest observation distance of station and received energy are determined, then optimal operating condition processing software is developed to evaluate the excitation effect of operating conditions. The optimal operating conditions in the Mianhuatan Reservoir are determined using this software. They are. optimal water depth 25m, airgun array sink depth 9m and airgun array size 7m × 7m. At the same time, accumulative stacking results for every 10 times are analyzed for 300 fixed-point excitations. It is concluded that the excitation effect shows a rapidly rising trend at 10 to 90 times stacking, a slowly rising trend at 100 to 150 times stacking, a rapidly rising trend at 160 to 240 times stacking, and a slowly rising trend at 250 to 300 times stacking. As the number of stacking increases, the propagation distance and the number of recording stations also increase gradually.
基金
sponsored by the National Natural Science Foundation of China(41474071)
the Special Fund for Earthquake Scientific Research in the Public Welfare of CEA(2015419015)
