标题: | 地下水水文地质与补注模式研究-补注区划设与资源量评估(1/4) |
作者: | 张良正 国立交通大学土木工程研究所 |
关键字: | 地下水补注;水文地质;地下水模拟;地球物理调查;地球化学调查;Groundwater Recharge;Hydrogeology;Groundwater modeling;Geophysical Investigation;Geochemical Investigation |
公开日期: | 2013 |
摘要: | 地质法第五条:“中央主管机关应将具有特殊地质景观、地质环境或有发生地质灾害之虞之地区,公告为地质敏感区。地质敏感区之划定、变更及废止办法,由中央主管机关定之”。其中地质环境包括容易因自然作用或人为活动而遭致破坏之地下水补注区,应补充地质调查,提高调查密度和精度,划定主要补注区,公告为地质敏感区。基于此,中央地质调查所自102年起推动4年科技发展计画“地下水水文地质与补注模式研究”,其主要工作目标为评估地下水补注区之水文地质特性,并瞭解区域地下水补注范围及资源量,使地下水资源的管理朝向永续利用的目标。其执行策略采分年分区执行,4年内将针对台湾重要地下水区兰阳平原、台北盆地、台中盆地及花东纵谷地区进行调查,厘定主要地下水补注区范围并评估地下水补注量。 为达成上述“地下水水文地质与补注模式研究”之计画目标,中央地质调查所乃规划本项4年期委办计画:补注区划设与资源量评估,本项委办计画之目标包含以下各点: (一) 完成兰阳平原、台北盆地、台中盆地及花东纵谷地区等4个地下水区之水文地质补充调查。 (二) 建立兰阳平原、台北盆地、台中盆地及花东纵谷地区地下水区之地下水补注模式,分析其补注机制、水平衡分析、地下水流模拟及地下水位水质监测。 (三) 划定兰阳平原、台北盆地、台中盆地及花东纵谷地区等4个地下水区之主要地下水补注范围。 (四) 评估兰阳平原、台北盆地、台中盆地及花东纵谷地区等4个地下水区之补注量、推估现况抽水之总抽水量及可抽用水量。 为达成上述计画目标,本项委办计画之主要工作项目包括: (一) 汇整历来水文地质、地下水和水文资料及成果。 (二) 地球物理补充调查:包括一维地电阻补充调查、二维地电阻调查与浅层水文地质架构检讨及现地重力量测调查与分析。 (三) 地球化学补充调查:包括地面及地下水水质采样与分析、地下水温度剖面调查及综整兰阳平原水文地质调查资料及搜集氚浓度分析资料,以描述区域性水文地质及水质特性。 (四) 地下水补注区及水平衡评估:包括水文地质资料库建置、三维水文地质模型建立、地下水补注区划设、地下水资源量评估、地下水流数值模式建置及主要补注区对区域地下水水量与水质之综合影响分析。本年度(民国102年) 并以兰阳平原为研究地区。 Article V of the Geological Act indicates "The central government authority should announce sensitive areas for those areas having special geological landscape, geological environment, or geological disaster tendency. The authority should also clearly define the rules for delineation, change, and cancellation of the sensitive areas." The " special geological environment " includes groundwater recharge area which could be easily influenced due to natural events or human activities. To precisely identify these recharge areas, Central Geological Survey, MOEA initiates a four-year project named "The study of groundwater hydrogeology and the recharge model" starting from year 2013. The main tasks of this project are evaluation of the groundwater hydrogeology characteristics of recharge area and identification of the recharge area and the recharge volume. These tasks assist the groundwater management toward sustainable use. The implementation strategy is to investigate and assess one groundwater region a year for Lanyang Basin, Taipei Basin, Taichung Basin, and East Rift Valley during the project time frame. The targets of the entire 4-year project: 1. Complete supplement hydro-geological investigation for four groundwater regions, Lanyang Basin, Taipei Basin, Taichung Basin, and East Rift Valley (called the four groundwater regions hereafter), to comprehend the hydro-geological characteristics of the groundwater recharge areas. 2. Develop the groundwater recharge models for the four groundwater regions. The developed models can perform the recharge mechanism analysis, water balance analysis, groundwater flow simulation to identify the recharge zones based on the investigation results including water level observation and water quality monitoring. 3. Delineate the main recharge areas for the four groundwater regions. 4. Assess the current recharge, current extraction, potential extraction limits for future water resources management and conservation. Main tasks for the Lanyang Basin in year 2013: 1. Collect related data including groundwater hydrogeology, hydrology, head observation, and related studies. 2. Geophysical investigation: Perform supplement 1D and 2D electrical resistance survey, review shallow layer hydro-geological structure, and investigate and analyze in-situ gravity. 3. Geochemical investigation: sample and analyze the surface water and groundwater, analyze geothermal gradient, and collect historical Tritium concentration data. 4. Assess the recharge area and the water balance: establish a hydro-geological database, develop a 3D hydro-geological model, delineate groundwater recharge area, evaluate the quantity of groundwater resource, develop a groundwater flow numerical model, and analyze groundwater flow and quality. |
官方说明文件#: | 102-5226904000-07-01 |
URI: | http://hdl.handle.net/11536/93110 https://www.grb.gov.tw/search/planDetail?id=2872236&docId=409218 |
显示于类别: | Research Plans |
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RRPG10202-0307-8037621.pdf
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RRPG10202-0307-8037603.pdf
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RRPG10202-0307-8037604.pdf
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RRPG10202-0307-8037598.pdf
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RRPG10202-0307-8038711.pdf
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