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地质统计学方法在地下水水位估值中应用   总被引:7,自引:0,他引:7  
对于许多区域水资源或水环境问题,地下水水流模拟往往要采用数值方法,需给出每个节点上初始水位值,以反映流场的初始状态。另外,地下水水位动态长期监测分析,需由观测点水位估计任一点的水位。文中阐述了地下水水位估值的地质统计学方法-泛克立格法原理,以河南省焦作市修武段地下水数值模拟分析区为例,分析了用一次、二次漂移的泛克立格方法模拟地下水初始流场的估值情况和对真实流场特征的反映情况。指出在进行区域地下水位  相似文献
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乌泊尔断裂带位于帕米尔构造结东北缘,作为揭示青藏高原形成与演化历史的关键地区之一,为碰撞造山作用提供了详细信息,因此厘清乌泊尔断裂带关键构造的形成演化具有重要意义。为研究该断裂带的几何学与运动学特征,本文利用钻测井资料、二维地震反射资料、DEM 高程资料以及喀什地区1∶100 000地质图,以断层相关褶皱理论为指导,对乌泊尔断裂带进行精细构造解析。研究认为,乌泊尔断裂沿走向至少可分为东、西两段,西段构造变形强烈,而东段较弱,构造样式沿断裂走向上有较大差异;垂直于构造走向上可划分出两个等倾角区;乌泊尔地区的变形最早于中新世早期开始,自上新世以来构造变形强烈,乌泊尔断裂在该区域的活动起始于第四纪,具有幕式活动的特点;通过断层相关褶皱分析得到,自中新世至上新世,断裂东段的构造缩短量至少为9.47 km,第四纪以来的构造缩短量至少为11.65 km。第四系生长地层的内部结构受控于基底叠瓦构造和乌泊尔断裂,明确深浅构造的关系能较好得限定研究区关键构造的形成演化过程,可作为复杂构造解析的有效方法。  相似文献
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Unsaturated radionuclide migration experiments were conducted in a pit inside thetesting hall.Several types of radionuclides were used in the experiments.Tritium wasused as a tracer for water movement in unsaturated loess.Other kinds of radionuclideswere also used in order to obtain fundamental parameters for radionuclide migration sothat further environmental assessment of low—level radioactive waste disposal can be car-ried out.Mechanisms governing unsaturated flow in loess,that is,principles ofone—way lateral flow,are presented qualitatively in this paper.And a continuumone—dimensional model for radionuclide migration testing is developed based on the ex-periments conducted under the particular conditions at the test site.The data measuredfrom the tests were compared with solutions of this one—dimensional model.Resultsshow that this model is feasible for modeling radionuclide migration in unsaturatedloess.  相似文献
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中国含油气盆地以叠合盆地为主,经历多期次构造运动,造成盆地内部多期古隆起的复合叠加;目前对于多期活动古隆起复合叠加过程的解析研究较为薄弱。本文以塔里木盆地轮南古隆起为例,利用最新的三维地震数据和钻井资料,应用构造解析和古构造复原的方法,明确轮南古隆起经历寒武纪-早中奥陶世前古隆起、晚奥陶世古隆起形成、晚泥盆-早石炭世叠加改造、晚二叠世-三叠纪古隆起定型、侏罗纪-古近纪古隆起埋藏和新近纪以来构造掀斜6个演化阶段;揭示现今以寒武-奥陶系碳酸盐岩为主体的前中生界隆起是由位于研究区西北侧北东向展布的晚奥陶世古隆起、研究区中部北北东向展布的晚泥盆-早石炭世古隆起和研究区北侧近东西向展布的晚二叠世-三叠纪古隆起三者复合叠加而成;不同时期古隆起成因机制有差异,但都与盆地周缘洋盆闭合、造山作用关系密切。  相似文献
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Vertical differential structural deformation (VDSD), one of the most significant structural characteristics of strike-slip fault zones (SSFZs) in the Shunbei area, is crucial for understanding deformation in the SSFZ and its hydrocarbon accumulation significance. Based on drilling data and high-precision 3-D seismic data, we analyzed the geometric and kinematic characteristics of the SSFZs in the Shunbei area. Coupled with the stratification of the rock mechanism, the structural deformations of these SSFZs in different formations were differentiated and divided into four deformation layers. According to comprehensive structural interpretations and comparisons, three integrated 3-D structural models could describe the VDSD of these SSFZs. The time-space coupling of the material basis (rock mechanism stratification), changing dynamic conditions (e.g., changing stress-strain states), and special deformation mechanism of the en echelon normal fault array uniformly controlled the formation of the VDSD in the SSFZs of the Shunbei area. The VDSD of the SSFZs in this area controlled the entire hydrocarbon accumulation process. Multi-stage structural superimposing deformation influenced the hydrocarbon migration, accumulation, distribution, preservation, and secondary adjustments.  相似文献
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