地震工程学报2017，Vol.39Issue(1)：186-190,5.DOI:10.3969/j.issn.1000-0844.2017.01.0186
地震勘探安全距离的标定方法研究
Calibration Method for Safety Distance during Seismic Exploration
摘要
Abstract
With the continuous advancement of seismic exploration and an expansion in the range of human activi-ties,areas of exploration and associated surfaces have become increasingly complex to negotiate when acquiring seis-mic data.In addition,areas of exploration have now been expanded to urban areas,oil areas,pipelines,and other places where there are a variety of obstacles,which results in the need for complex seismic operational methods,and involves greater operational difficulty and lower work efficiency.During seismic data acquisition of complex transition zone (TZ),the obstacles are usually numerous,and the work area often contains intricate pipelines,wells,power grids,buildings,and areas under nature protection.In addition,mixed excitation methods are required,such as vibro-seis,explosives,and different kinds of air guns.With the continuous increase in awareness of seismic operational safe-ty and environmental protection,the valid acquisition area of seismic projects has become increasingly narrow,and the range of source point deployment has increasingly reduced.These factors are leading to the acquisition of poor quality seismic data,and even data gaps in some areas.There is an urgent need to determine effective acquisition space to reasonably lay out source points.Optimization of geometry,and excitation and receiving parameters improve seismic data quality,and although the use of data interpolation can compensate for missing data during later process-ing it is associated with"false"suspects.During actual operations,safe distance values are usually provided by clients or determined using instrument tests.However,safety distances are generally too large,and thus the effective acquisi-tion space is greatly compressed.Based on above two points,this paper uses Sadov's vibration formula,known in engi-neering blasting,for seismic exploration,and combines flexibility of testing instruments and scientifically calibrated safety distances,thereby improving the capacity of the source layout,which further expands the seismic acquisition space,improves the quality of seismic data,ensures the safety of operations,and enhances the operation schedule.The research provided in this paper is thus of considerable use for seismic exploration in complex areas.关键词
安全距离/过渡带/PPV/振动速度/振动效应/偏移Key words
safety distance/transitional zone/PPV/vibration velocity/vibration effect/offset分类
天文与地球科学引用本文复制引用
石双虎,丁向晖,齐永飞,杨阳,单启铜..地震勘探安全距离的标定方法研究[J].地震工程学报,2017,39(1):186-190,5.基金项目
国家重点研发计划深地专项项目(2016YFC06110) （2016YFC06110）
