共查询到19条相似文献，搜索用时 109 毫秒
1.
2.
3.
地热井水位的监测是地热开发与利用过程中的一项重要工作,尤其是为了加强资源管理,合理平衡利用地热资源,使得监测工作日趋常态化。目前水位测量的工作主要在地热井的套管内来实现,或直接下入测线、或以并列安装在泵管上的测管作为通道来完成测量工作,其中前者由于潜水泵的泵管和电缆易与测线发生缠绕,影响测量精度,后者由于系统不完善经常无法测量,无法达到监测测量工作的要求。针对这些问题研制了一套基于连通器原理的套管外水位测管系统,并通过在试验井的安装测试证明其可行性及实用性。介绍了该系统的工作原理、结构设计、安装测试过程,并对测试结果进行了分析和评价。 相似文献
4.
5.
6.
利用静力触探护管,提出了一种新的承压水观测方法,通过现场试验证明该法在止水效果、孔口淤积、水位稳定时间、观测数据准确度上具有较大的优势。 相似文献
7.
8.
当前,许多开采地下水的灌区,一般都没有设立专用的观测井,多利用生产井来进行水位观测。这样,在每年长达七个多月的开采期间,就只能测得动水位而测不到真实的静水位,而水位的预测工作却是建立在静 相似文献
9.
10.
11.
灰色系统GM（1，1）模型在天津地下热水水位预测中的应用 总被引：2，自引：0，他引：2
天津是我国开发利用地热资源较早的城市之一,二十世纪九十年代开始大规模的将地热资源应用于供暖、洗浴、养殖等方面。但随着地热资源开采规模的不断扩大,地下热水的水位正在逐年下降。通过整理和分析以往的动态监测资料,介绍了天津地区地热地质条件,总结了天津地区地下热水水位动态变化的基本特征,并利用灰色系统GM（1,1）模型对地下热水的未来水位变化趋势进行了预测,提出GM（1,1）模型在地下热水水位短期预测中的优势和应用前景。 相似文献
12.
Hydro-geochemical simulation of the mixing balance of exploitation and reinjection of geothermal fluid 
下载免费PDF全文
下载免费PDF全文 This paper targets its research at the exploitation–reinjection well of geothermal fluid of one geothermal heating project in Tianjin, China, examines such factors as ground temperature, CO_2 partial pressure and stratum lithology, and simulates the changes in the main component contents of geothermal fluids mixed at different proportions in the exploitation and reinjection well. The research findings show that the mixed fluids are increasingly similar in nature to the reinjected water as the reinjection process goes on. It's suggested that the manual method should be used to ensure the reinjected water has the similar mineralization as the exploited ground water in the process of reinjection and some acceptable adjustments should be made according to the specific component and water temperature. The study on water-rock balance calculation shows that PHREEQC can simulate the complicated chemical reactions related to water when the transfer of solute happens, so the necessary technological supports are given for the reasonable development and protection of geothermal resources. 相似文献
13.
西藏地热资源异常丰富,属于地中海—喜马拉雅地热带的重要组成部分。地热系统最为典型的地球化学特征是大部分地热泉或与之相应的泉华沉积物超常富集B、Li、Rb、Cs等元素,具有重要的矿产资源意义。有关这些特征元素来源与水化学演化成因机制,长期存在争议,在理论上缺乏系统论述。本文基于多年野外考察与数据积累,以及对前人研究成果的系统总结,提出了西藏地热系统特征元素组合与富集成因模式,宏观板块构造与微观地球化学分布规律结合,揭示了其成因机制。数据综合分析表明,B、Li、Rb、Cs元素在空间上的分布富集规律总体具有同步性,主要集中分布于雅鲁藏布江缝合带与南北向断裂带交汇区的高温地热系统。B同位素、元素组合、水循环特征及大量地球物理证据表明物源受控于岩浆残余流体,水-岩作用难以作为唯一物源支撑地热系统如此大规模的特征元素超常富集。结论提出西藏地热系统超常富集的元素受控于板块俯冲碰撞、地壳局部重熔、重熔型岩浆流体分异演化、地下水深循环等一系列内外生地质耦合作用过程。本文对西藏地热系统元素超常富集成因机制的解释,有利于增强人们对高温地热系统除水资源与热能意义之外,也同时关注矿产资源价值,实现“水-热-矿”于一体的系统理解,也对未来正确评价地热水体或沉积物矿产资源价值有理论指导意义。 相似文献
14.
河南省地热资源开发利用现状评价 总被引：2，自引：0，他引：2
基于河南省地热资源特点及其开发利用现状的基础上,分析总结了河南省各种类型地热水的开采情况。首先应用已采量与可采量的比值作为评价标准将地热水的开发利用程度为五类,评价了整个河南省新生界地热水、基岩地热水、温泉水的开发利用情况以及各地市城区的地热开采情况,提出河南省应积极地推广地热资源利用,对开采过热的地区要注意防止地热水位下降过快,对开采一般的地区要注意适度开发,对其他地区要结合自身实际鼓励开发。 相似文献
15.
Zhonghe Pang 《Journal of Geochemical Exploration》2006,89(1-3):306
In arc-type geothermal systems along the circum-Pacific rim, low pH well discharges in the geothermal systems of Japan and the Philippines are more enriched in oxygen-18 or deuterium or both as compared to neutral pH waters found in the same systems. Isotope enrichment of both oxygen-18 and deuterium means higher percentage of magmatic vapour contribution to the well discharges due to the fact that un-neutralized magmatic water carries much abundant hydrogen ions to keep the water at a lower pH. This is consistent with the observation that acid geothermal waters usually occur near the volcanic heat source of a geothermal system, where the magmatic component tends to reach a higher percentage. 相似文献
16.
在简要分析全安盆地水文地质特征、地下水赋存条件及划分地下水类型基础上,对盆地西部周地—暖水塘地区地下热水形成原因、赋存环境进行研究,认为多期次构造运动形成的断裂、裂隙沟通深部地下热水是盆地热水来源的主要原因;采取地下热水样品并开展氢氧稳定同位素、逸出气体、水化学成份测试,认为地下热水由大气降水补给,长期水动态观测结果也显示大气降水与地下热水关系较密切。 相似文献
17.
Numerical simulation of operation performance on production and injection of a double well geothermal system in Kailu Basin,Inner Mongolia 下载免费PDF全文
下载免费PDF全文 Inner Mongolia is abundant in geothermal resources, but the development and utilization of medium-depth geothermal resources for clean heating in winter is still in the preliminary stage compared with the neighboring provinces. In this paper, a recently developed geothermal heating system using the Mesozoic sandstone reservoirs in Baokang of Kailu Basin, Eastern Inner Mongolia was investigated, a three-dimensional geological model of a pair of production and injection well was established, and numerical simulations on the long term operation performance were conducted and verified by pumping test and water level recovery test data. The effects of flow rates, the direction of wells, injection temperature and ratios on the flow field and water level in the thermal reservoir were analyzed. The results show that considering a 30-year operation period and a production rate from 90 m3/h to 110 m3/h, the optimum well spacing can be increased from 225 m to 245 m, with an average value of 235 m. With the decrease of the injection temperature, the cold front of the injection water has an increasing influence on the temperature in the production well. A complete injection or the principle of production according to injection is recommended in order to maintain the long-term operation stability. In addition, the location of the injection well should be arranged in the downstream of the natural flow field. The present results can provide a useful guide for the optimum design and performance prediction of geothermal wells, thus maintaining the production and injection balance and promoting the sustainable development and utilization of medium-depth and deep geothermal resources. 相似文献
18.
为了准确规划和评价南京汤山地区地热水资源的可开采量，预测在规划开采条件下的地热水水位和水温的变化，在充分研究了汤山地区地热水系统水文地质特征的基础上，概化出南京汤山地区地热水系统的水文地质概念模型，建立了地热水非稳定渗流和热量运移三维耦合数学模型，模拟预测了降深不超过50 m时的地热水可开采量及其水位和水温的变化。结果表明：汤山地区现有14口地热水井的可开采量有所差异，最大为R08（温泉公司1#），开采量可达1 450.0 m3/d，最小为R11（中闻集团2#），开采量仅有125.0 m3/d，地热水的总可开采量为3.08×106m3/a；且随着开采的进行，地热水水位逐渐下降，各地热水井温度逐渐上升，上升幅度略有不同，年均水温上升2~3℃。 相似文献