摘要
探讨地层不整合结构的定量预测问题。通过对济阳拗陷古近系不整合发育特征的研究,将不整合结构划分为3种类型,并进一步明确了不整合结构发育的4种主要控制因素;综合地质和岩心分析测试研究成果,应用模糊判识的方法,确定了评价因素集、权重因素集和隶属函数,建立了用于表征不整合结构特征的模糊识别模型;结合样品分析测试结果,确定了地质模型定量预测不整合结构类型的评价标准。研究表明,断陷盆地不整合结构定量预测地质模型具有较好的适用性。
In researching the formation of stratigraphic pools, to forecast an unconformity structure quantitatively is a key problem which can not be ignored. In order to solve the problem, the paper studies the developing characteristics of the unconformity structures in Paleogene Period in the Jiyang depression, divides the unconformity structure into three types, i.e. type Ⅰ1, type Ⅰ 2 and type Ⅱ , and makes sure that there are 4 factors which mainly control the type of an unconformity structure. According to the investigative results of geology and core analysis, the paper structures an evaluation factor set, a weight factor set and a membership function by using the method of fuzzy recognition, and then founds the fuzzy model to recognize the type of an unconformity structure. Combined with the experiment results of core samples. It sets up the evaluation standard to recognize the type of an unconformity structure quantitatively by using the model founded above. The research indicates that the model, which was founded to forecast the structure type of an unconformity quantitatively in a rift basin, fits the data of testing results of core samples in the Jiyang. depression.
出处
《成都理工大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第4期452-456,共5页
Journal of Chengdu University of Technology: Science & Technology Edition
基金
中国石油化工股份有限公司重大科技攻关项目(P06012)
关键词
断陷盆地
不整合结构
模糊识别
定量预测
济阳拗陷
rift basin
unconformity structure
fuzzy recognition
quantitative forecast
Jiyang depression
