云南裂隙带主控热储类型及其形成条件

发布时间：2018-05-25 20:00

本文选题：裂隙带 + 热储类型　；参考：《昆明理工大学》2017年硕士论文

【摘要】：云南地区地热资源丰富、类型繁多,早期对地热资源的研究取得了极大的进展,并且裂隙带主控型热储前人亦已有一定成果,但对裂隙带主控型热储的归纳分类及形成条件分析却不多,为了深入了解裂隙带主控型热储的基本特征及成因、形成条件,缓解当下人们对地热资源的有效合理开发利用,故此开展了本次研究。本论文通过收集、整理前人的研究调查资料,分析裂隙带主控型热储型地热系统的热源、热储、热流体通道、盖层条件及水化学特征,以典型实例为代表探索了裂隙带主控型热储地热系统形成条件和特征,建立相应的成因概念模型。本文将裂隙带主控型热储分为褶皱裂隙带型成热型、侵入岩裂隙带型成热型两大类,其中褶皱裂隙带型热储可分为层状热储褶皱裂隙带成热型与带状热储裂隙带成热型两种亚类,层状热储褶皱裂隙带成热型可划分为良好盖层层状热储褶皱裂隙带导通型、不良盖层层状热储褶皱裂隙带揭露型、良好盖层层状热储褶皱裂隙带主控成热型、良好盖层层状热储褶皱裂隙带埋藏型四种基本类型,带状热储裂隙带成热型可划分为良好盖层带状热储裂隙带成热型、不良盖层带状热储裂隙带成热型两种基本类型;因侵入岩裂隙带成热型在云南分布较少,故未对其进行细分。本文通过对选取的八个典型研究点的地热地质背景,地质构造条件,热泉的水化学性质等条件对其地热特征进行地质综合对比、分析研究,对研究类型典型实例做了成因分析并建立了对应的成因概念模式。层状热储褶皱裂隙带主控型中导通型与埋藏型层状热储皆为过去封存而成,矿化度一般较高,多在褶皱核部轴线上地形较低处出露,揭露型、主控成热型热储封闭性较差,与大气降水水力联系较强,矿化度相对较低;带状热储裂隙带成热型为带(脉)状热储,地下水循环程度较高,多在核部垂向无富水性强的地层中发育,垂向上无明显含水层,泉流量较小,矿化度一般较高;侵入岩裂隙带成热型成因与层状热储导通型相似,能形成中高温热储,矿化度一般较高。
[Abstract]:Yunnan is rich in geothermal resources and has a variety of types. Great progress has been made in the study of geothermal resources in the early period. However, there are few inductive classification and formation condition analysis of main controlled heat storage in fracture zone. In order to deeply understand the basic characteristics and cause of formation of the main controlled heat storage in fracture zone, and to alleviate the effective and rational exploitation and utilization of geothermal resources by people at present, Therefore, this study was carried out. In this paper, by collecting and arranging the investigation data of predecessors, the heat source, heat storage, thermal fluid passage, caprock condition and hydrochemical characteristics of the main controlled geothermal storage system in the fracture zone are analyzed. Taking the typical example as the representative, the forming conditions and characteristics of the main controlled geothermal storage system in the fracture zone are explored, and the corresponding conceptual model of the origin is established. In this paper, the main controlled heat reservoir of fracture zone is divided into two types: fold fracture zone type heat type and intrusive rock fracture zone type heat type. Among them, the heat storage of the fold fracture zone can be divided into two subtypes: the stratified heat storage fold fracture zone and the zonal heat storage fracture zone, and the layered heat storage fold fracture zone can be divided into good cover layer heat storage fold fracture zone conduction type, and the stratified heat storage fracture zone can be divided into two types, which are the laminated heat storage fracture zone and the zonal heat storage fracture zone. There are four basic types of thermal reservoir fold fracture zone, which are exposed type, well controlled thermal type, good buried type of laminated thermal reservoir fold fissure zone, and well covered layer by layer heat storage fold fracture zone, the main thermal type is well covered layer by layer heat storage fold fracture zone, and 4 basic types of buried fracture zone are obtained. The thermal type of the zonal heat storage fracture zone can be divided into two basic types: the good caprock zonal heat storage fissure zone and the bad caprock zonal heat storage fissure zone, but the thermal type of the intrusive rock fracture zone is less distributed in Yunnan Province, so it has not been subdivided. In this paper, the geothermic characteristics of eight typical research sites are analyzed and compared by the geological background, geological structural conditions, hydrochemical properties of hot springs, and so on. This paper analyzes the cause of formation of typical examples of research type and establishes the corresponding conceptual model of origin. In the main controlled type of lamellar heat storage, the conduction type and the burial type are all sealed up in the past, and the degree of mineralization is generally high. Most of them are exposed on the axis of the fold core, revealing type, and main controlled thermal type have poor sealing ability. The fracture zone of zonal heat storage is a zonal (vein) type of heat storage, and the degree of groundwater circulation is relatively high. Most of them are developed in the vertical water-rich strata of the nuclear region, and there is no obvious aquifer vertically, and there is no obvious aquifer in the vertical direction. The formation of thermal type in the fissure zone of intrusive rock is similar to that of stratiform heat storage and conduction type, which can form middle and high temperature heat storage, and the degree of mineralization is generally higher.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P314

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