关键词: 地震勘探, 山地, 观测系统

Abstract: Complicated mountainous area is characterized for large ups and downs in landform, complicated surface structure and steep subterranean structure. The traditional method for design of observation system uses the level surface and underground level layered homogenous medium as the assumed conditions. This makes the designed observation system unsuitable for seismic data acquisition in such region, causing low signal-noise ratio, poor structural imaging quality and difficult operation for acquisition. The software for design of real surface seismic observation system enables CRP folds to be focused on the target formations, uses remote sensing information to select and adjust line collocation, optimizes shot and receiver points, appraises operational safety risks in the work area, and designs the seismic operational routes, thus providing more scientific solutions for mountainous seismic data acquisition. The software was put into application in a number of areas. It lowered the operational difficulty by 50 percent, nearly doubled the acquisition efficiency and remarkably raised the data quality, effectively improving the imaging quality of the main position of mountainous steep structure.

Key words: seismic exploration, mountainous area, observation system