SI数据采集系统简介

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英文篇名：A Brief Introduction to SI Data Acquisition System 中文刊名：中国煤田地质 英文刊名：Coal Geology of China 作者：陈光明 ; 陈莉 ; 候树麒 英文作者：Chen Guangming1 ; Chen Li2 and Hou Shuqi3(1.Jiangsu Coalfield Geophysical Prospecting and Surveying Team ; Nanjing ; Jiangsu 210046 ; 2.Information Center ; Ministry of Land and Resources ; Beijing 100812 ; 3.Beijing Huachang Xinye Geophysical Prospecting Technical Service Co.Ltd. ; Beijing 100022) 中文关键词：S ; I数据采集系统 ; 高密度 ; 高保真度 ; 高分辨率 ; 数字检波器 英文关键词：SI data acquisition system ; high density ; high fidelity ; high resolution ; digital geophone 出版日期：2005-10-30 机构：江苏煤田物测队,国土资源部信息中心,北京华昌新业物探技术服务有限公司 江苏南京210046,北京100812,北京100022 年：2005 期：05 出版单位：中国煤田地质

摘要

经过20多年的实践,煤炭系统已能较好地实现落差≥5m断层、煤层5m起伏的二、三维地震勘探。受大道距(10～20m)、多组合、高频(60Hz、100Hz)检波器的幅频响应、狭长的束状观测系统、炮检方位角变化引起频率降低等因素的影响,极大地约束了分辨率的进一步提高。SI地震数据采集系统,以小道距、不组合、单点宽频数字检波器接收,无采集站的宽频带、高密度、高保真度、高精度的数据采集方法等独有特点,可在更大范围内提高垂向、横向分辨率,探测落差≤5m的断层、控制直径≤15m陷落柱等微小地质构造,适应煤矿回采的要求。
Through practices during twenty more years,the coal geological exploration units can do 2D and 3D seismic prospecting well to find out faults with throws ≥5m,and 5m thick coal seams' undulation.But because of influences from large group interval(10-20m),multi-resultant,high frequency(60 Hz,100 Hz),geophone amplitude-frequency response,long and narrow fascicular recording geometry,shot to geophone azimuth variation give rise to frequency reduction,swinging constrain further improving of resolution.While the SI data acquisition system has unique features of small group interval,non-resultant,single-shot wide-band digital geophone receiving,no collecting station wide band,high density,high fidelity,high precision data acquisition methods can improve vertical and transverse resolution even more,thus can explore minor structure of faults with throws ≤ 5m,subsided column with diameter ≤ 15m,thereby can satisfy coalmine operation requirements.

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