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简单介绍了地震属性技术和模式识别方法及其在许厂煤矿奥陶系灰岩裂隙发育带预测中的具体应用。预测结果表明,地震属性技术及模式识别方法的综合应用为预测奥灰裂隙发育带提供了一种有效的方法。 相似文献
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利用地震P波确定煤层瓦斯富集带的分布 总被引：2，自引：0，他引：2
查明煤层瓦斯富集区域,对可能的瓦斯突出点进行预报,是当前煤矿生产中亟待解决的重要课题。利用地震P波对裂缝性地层所表现出的方位各向异性特征,根据地震属性随方位角变化可以预测裂隙发育方向和密度的基本原理,应用多种地震P波方位属性预测裂隙发育带。通过对淮南张集煤矿西三采区三维地震P波资料的处理,获得6个方位地震数据体,从中提取多种与煤层和围岩裂隙相关的地震属性,并计算出裂隙的发育方向和密度,为确定瓦斯富集带的分布提供了一种新的途径。 相似文献
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我队的钻探工程由于地层复杂,破碎带多,几乎每一个钻孔都要穿过一至两个破碎带。并且破碎带的岩性很碎,例如流砂,透水性较强,经注水试验其透水系数3公尺3/24小时,对其两侧岩层的影响很大,破碎、裂隙很大,破碎带两侧的水都是流向破碎带的。而地下水又沿破碎带流向河床(如图1)。 相似文献
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时间域地震资料解释比较成熟,深度域处理技术已经走向煤炭领域,但煤矿采区高密度三维地震深度域资料解释实际应用还存在很多问题。通过煤炭地震深度域层位标定、深度域断层解释、深度域底板成图的摸索应用,参考时间域解释的流程,初步建立在煤炭高密度三维地震深度域资料中直接解释煤田地质成果的方法。以淮北祁南矿三维叠前深度偏移地震资料应用为例,通过深度域、时间域地震数据的对比剖析,断层解释、回采面地震属性显示及底板成图,取得精度更高的结果,利于一线技术人员直接运用深度域地震资料来指导煤矿生产。 相似文献
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金平县长安金矿区内下奥陶统向阳组(O_1x)岩层强风化带、F_6断层破碎带及构造裂隙发育的岩层是矿山开采主要面对的工程地质问题,当地下采矿工程遇到上述强风化带、断层破碎带时,需采取连续支护,局部甚至需要钢筋混凝土全断面浇筑支护;当遇到裂隙发育的岩层时,需采取锚网喷加固支护。 相似文献
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地下煤层气化的燃烧范围,气化燃烧热力影响边界、形态、方向,气化区冒落带的发展高度及气化煤层裂隙发育程度,是开展煤炭地下气化工程迫切需要解决的问题。基于煤炭地下气化工程试验区地震地质情况,从地震响应入手,在分析煤炭地下气化后地震波场响应特征的基础上,提出了运用高密度三维地震采集技术结合全三维地震属性解释技术,高精度识别煤炭地下气化燃烧范围、气化热力影响边界的方法。实际勘探成果表明,本方法地震成像清晰,预测精度高,与钻探结果吻合较好。 相似文献
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活断层探测是断层活动性评判的基础,也是天然地震灾害预防的依据,而浅层地震勘探是活断层探测的有效方法之一;而目前利用浅层地震方法评判断层活动性的能力亟待提高.通过构建了不同宽度破碎带的活断层理论模型,采用二维粘弹性波动方程有限差分法进行了波场响应特征模拟,运用希尔伯特变换方法提取了瞬时频率和相位属性.结果表明:地震水平叠加剖面和瞬时属性相结合可有效获取穿过第四系活断层的响应特征和实现断层活动性评判;当相干噪声达到30%时,水平叠加和瞬时频率属性剖面已难以追踪第四系中弱反射信号,而瞬时相位属性剖面仍可有效追踪;在实际活断层判定中,水平叠加、瞬时频率与瞬时相位地震属性剖面均可判断断层的存在,而穿过第四系的断层 (或破碎带) 特征瞬时相位属性最为明显和突出,水平叠加剖面次之,瞬时相位地震属性是判定断层活动性的重要和有效的属性. 相似文献
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某火山岩矿区由于受后期构造影响,含水介质除了发育成岩裂隙-孔洞外,还发育有多组构造裂隙和剪切破碎带。抽水试验显示:抽水早期(≤6min)各观测孔的降深明显大于泰斯理论降深(单重均质),中后期(6min)趋于一致,呈现出双重含水介质的释水特征。本次研究在充分分析双重介质释水机理的基础上,结合时间步长为20s的高分辨率降深资料,采用分段泰斯模型进行了水文地质参数的识别。结果表明:剪切破碎带等强导水介质的弹性给水度略小于成岩裂隙-孔洞弱导水介质的弹性给水度;但导水系数相差很大,强导水介质一般为5 590~6 130m2/d,而弱导水介质仅715~743m2/d,这必然会导致未来矿山开拓过程中初见涌水量和稳定涌水量的显著差异,需要引起足够的重视。 相似文献
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Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
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Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
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正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
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正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
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正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
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正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
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正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献
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正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of 相似文献
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正20140582 Fang Xisheng(Key Lab.of Marine Sedimentology and Environmental Geology,First Institute of Oceanography,State Oceanic Administration,Qingdao 266061,China);Shi Xuefa Mineralogy of Surface Sediment in the Eastern Area off the Ryukyu Islands and Its Geological Significance(Marine Geology Quaternary Geology,ISSN0256-1492,CN37 相似文献
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正20141810 Bian Yumei(Geological Environmental Monitoring Center of Liaoning Province,Shenyang 110032,China);Zhang Jing Zoning Haicheng,Liaoning Province,by GeoHazard Risk and Geo-Hazard Assessment(Journal of Geological Hazards and Environment Preservation,ISSN1006-4362,CN51-1467/P,24(3),2013,p.5-9,2 illus.,tables,refs.) 相似文献