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Hard Rock Aquifers of Trivandrum, Kerala, India: A Critical Analysis of Its Status and Prospects 印度喀拉拉邦特里凡得琅的硬岩含水层:现状与前景的批判性分析
Pub Date : 2017-04-26 DOI: 10.21276/ijee.2017.10.0232
P. Raveendran, E. Shaji
: Groundwater in the hard rock aquifers of Trivandrum district has been studied to characterize the groundwater potential and prospects. The study area is occupied by four watersheds (Ayirur, Vamanapuram, Karamana and Neyyar) and groundwater is one of the main sources of water for drinking and agricultural purpose. The groundwater scenario has been assessed by using the water table contour maps and groundwater level fluctuation maps based on the data obtained from 93 observation wells. The average water level in the region is 9 to 13 and 8 to 10 mbgl during pre and post monsoon seasons respectively. The deepest water level (20.21 mbgl to 26.67 mbgl) is recorded from places such as Chovvarapotta, Pazhayaucchakkada and Ozhukupara and shallowest water level (0.85 mbgl to 1.61 mbgl) is in places like Irumba, Punnamkarikkakam, Kathipara and Erattachira. Most of the deep dug wells go dry during summer months, though these wells show good water level fluctuation during rainy season. A detailed investigation has revealed that substantial quantity of groundwater is being lost as base flow. This base flow of groundwater makes the rivers and river lets, perennial in the area. The long term trend analysis shows that (ten years data), majority of the wells are showing declining trend (1.99 m/year) and this decline is attributed to the change in land use pattern in the area and less recharge from the rainfall. The rainfall analysis shows that there is not much variation in the rainfall pattern over the last few years. On the basis of mathematical projection the water level trends for the next ten years has been predicted. The analysis shows that the groundwater potential in the hard rock aquifer is depleting hence an immediate recharge measures have to be implemented in this region to arrest the decline trend and the base flow.
对Trivandrum地区硬岩含水层的地下水进行了研究,描述了地下水的潜力和前景。研究区有四个流域(Ayirur、Vamanapuram、Karamana和Neyyar),地下水是饮用水和农业用水的主要来源之一。利用93口观测井资料绘制的地下水位等高线图和地下水位涨落图,对地下水情景进行了评价。季风前和季风后的平均水位分别为9 ~ 13mbgl和8 ~ 10mbgl。最深的水位(20.21至26.67 mbgl)记录在Chovvarapotta, Pazhayaucchakkada和Ozhukupara等地,最浅的水位(0.85至1.61 mbgl)记录在Irumba, Punnamkarikkakam, Kathipara和Erattachira等地。大多数深挖井在夏季干涸,但这些井在雨季表现出良好的水位波动。一项详细的调查显示,大量的地下水作为基流正在流失。地下水的基础流使得河流和河川常年存在于该地区。长期趋势分析表明(10年数据),大部分井呈下降趋势(1.99 m/年),这种下降是由于该地区土地利用方式的变化和降雨补给的减少。降雨分析表明,过去几年的降雨模式没有太大变化。在数学推算的基础上,对未来十年的水位趋势进行了预测。分析表明,该地区硬岩含水层的地下水潜力正在枯竭,必须采取立即回灌措施,以遏制下降趋势和基底流。
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引用次数: 0
Characteristics and Main Controlling Factors of Source Rock in Cambrian Yuertus Formation in Aksu Area, Tarim Basin 塔里木盆地阿克苏地区寒武系尤尔特斯组烃源岩特征及主控因素
Pub Date : 2017-04-26 DOI: 10.21276/ijee.2017.10.0206
Chen Feiran, X. Xiang, Zhang Zhiyao, Zhou Xiaoxiao, T. Cheng
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引用次数: 1
Effects of Green Space Spatial Distribution on Land Surface Temperature: Implications for Land Cover Change as Environmental Indices 绿地空间分布对地表温度的影响:作为环境指标的土地覆盖变化
Pub Date : 2017-04-26 DOI: 10.21276/IJEE.2017.10.0207
Surajit Panda, M. Jain
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引用次数: 1
Heat Transfer Enhancement Using Graphene Oxide/Water Nanofluid in a Two-Phase Closed Thermosyphon 在两相封闭热虹吸管中使用氧化石墨烯/水纳米流体增强传热
Pub Date : 2017-04-26 DOI: 10.21276/IJEE.2017.10.0218
M. Salem, Tarek A Meachail, M. Bassily, S. Torii
: A two-phase closed thermosyphon (TPCT) is a device for heat transmission. The TPCT is composed of three major parts: Lower evaporator, the adiabatic region in the central range and the condenser at the top. Fluids with nanoparticles (particles smaller than 100 nm) suspended in them are called nanofluids that they have a great potential in heat transfer enhancement. In the present study, Nanofluids of aqueous Graphene oxide (GO) nanoparticles suspensions are prepared in various volume concentration of 0.05–0.20% and used in a TPCT as working media. Experimental results showed that for different input powers, the heat transfer coefficient of the TPCT increases up to 33.04% when GO/water nanofluid is used instead of pure water. A decrease of 24.83% is achived in thermal resistance at 0.20 vol.% for GO/water nanofluid.
:两相闭式热虹吸(TPCT)是一种传热装置。TPCT由三大部分组成:下部蒸发器、中部绝热区和顶部冷凝器。纳米颗粒(粒径小于100纳米)悬浮在流体中,具有增强传热的巨大潜力,因此被称为纳米流体。在本研究中,制备了体积浓度为0.05-0.20%的水相氧化石墨烯纳米颗粒悬浮液,并将其作为TPCT的工质。实验结果表明,在不同的输入功率下,使用氧化石墨烯/水纳米流体代替纯水时,TPCT的换热系数提高了33.04%。氧化石墨烯/水纳米流体的热阻在0.20 vol.%时降低了24.83%。
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引用次数: 0
Analysis and Assessment of Strength Development in Concrete Cubes Using Granulated Blast Furnace Slag as Marginal Material 高炉矿渣颗粒状边缘材料混凝土立方体强度发展分析与评价
Pub Date : 2017-04-26 DOI: 10.21276/IJEE.2017.10.0226
U. Mohan, K. Prasad, S. Bhaskar
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引用次数: 0
Groundwater Investigation by Resistivity Method In The Drought-Prone Kuchinda and Bamra Blocks, Sambalpur District, Odisha, India 印度奥里萨邦Sambalpur地区干旱易发地区Kuchinda和Bamra区块的电阻率法地下水调查
Pub Date : 2017-04-26 DOI: 10.21276/IJEE.2017.10.0215
N. Mahanta
: Hydrogeological studies in drought-prone Kuchinda and Bamra blocks of Kuchinda Subdivision in northern part of Sambalpur district has indicated predominance of consolidated formations lacking primary porosity. Groundwater occurs both under unconfined and semiconfined conditions in the weathered and fractured zones. Although, there is underdevelopment of groundwater resources in the subdivision as a whole, localized scarcity is found in many places as evidenced from dry wells in summer and increase in the depth of water table over the years. Resistivity survey in 26 locations of the area has indicated 3 to 5 layer cases in the disposition of subsurface rocks. The second and third layers are suitable for groundwater storage and movement and hence can be developed for groundwater. The potential fracture zones are restricted to a depth of 27 to 174.5 m below the ground level.
对Sambalpur地区北部Kuchinda分区的干旱易发区Kuchinda和Bamra地块的水文地质研究表明,主要为固结地层,缺乏原生孔隙。在风化带和裂隙带中,地下水可在无约束和半约束条件下发生。虽然整个分区的地下水资源开发不足,但从夏季井干和多年来地下水位深度的增加可以看出,许多地方存在局部性的短缺。在全区26个地点的电阻率测量中,发现了3 ~ 5层状地下岩石分布。第二层和第三层适合地下水的储存和移动,因此可以开发地下水。潜在的裂缝带被限制在地表以下27至174.5米的深度。
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引用次数: 1
Application of SWAT Model to Investigate Soil Loss in Kaneri Watershed SWAT模型在Kaneri流域土壤流失研究中的应用
Pub Date : 2017-04-26 DOI: 10.21276/IJEE.2017.10.0211
Swami Vidula, K. Sushma
: Watershed as an entry point acts as a beginning to address the issues of sustainable rainwater management for improving livelihoods. To deal with water management issues, one must analyse and quantify the different elements of hydrologic processes taking place within the area of interest. For this, in present study, SWAT (Soil and Water Assessment Tool) model is selected to model hydrological processes and compute runoff and sediment yield from the Kaneri watershed. Application of the SWAT model showed a relationship between watershed characteristics and their effects on runoff and sediment yield The distributed nature of the model output helped in identifying the sub basins and even HRUs within the watershed that were more prone to soil erosion and, hence, need to be given priority while implementing soil conservation measures. Its application proved that the model is a very flexible and robust tool that can be used to simulate a variety of watershed problems.
流域作为切入点,是解决可持续雨水管理问题以改善生计的开端。为了处理水管理问题,必须分析和量化在有关领域内发生的水文过程的不同要素。为此,本研究选择SWAT (Soil and Water Assessment Tool)模型来模拟水文过程,并计算Kaneri流域的径流和产沙量。SWAT模型的应用显示了流域特征及其对产流产沙的影响之间的关系,模型输出的分布特性有助于识别流域内更容易发生土壤侵蚀的子流域甚至hru,因此在实施土壤保持措施时需要优先考虑。应用表明,该模型是一种非常灵活、鲁棒的工具,可用于模拟各种流域问题。
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引用次数: 4
An Experimental Study to Check Compressive Strength of Concrete by Using Jute Fibers as Reinforcement 黄麻纤维加固混凝土抗压强度校核试验研究
Pub Date : 2017-04-26 DOI: 10.21276/IJEE.2017.10.0248
Vikas Sofat, A. Khadwal, Suminder Meerwal
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引用次数: 3
Diversion Tunnel of Hydropower Projects for Sediment Management 水电工程引水隧洞泥沙治理
Pub Date : 2017-04-26 DOI: 10.21276/IJEE.2017.10.0238
M. Verma, M. Qamar, N. Isaac, V. Bhosekar
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引用次数: 0
Use of Multivariate Analytical Methods in Assessment of River Water Quality 多元分析方法在河流水质评价中的应用
Pub Date : 2017-04-26 DOI: 10.21276/ijee.2017.10.0236
Siddhartha Sharma
: This study is focused on the assessment of water quality of river Satluj in North Indian state of Punjab and evaluation of 34 physico-chemical variables monitored during the period 2015–2016, at 3 different sampling locations. Multivariate analytical techniques, such as Principal Component Analysis (PCA)/ Factor Analysis (FA) were applied to the water quality data set to identify characteristics of water quality in the studied catchment. PCA/FA was applied for source identification to data sets pertaining to 3 spatial groups (upper catchment, middle catchment and lower catchment) responsible for the data structure. These factors are conditionally named soil structure and soil erosion; domestic, municipal and industrial effluents; agricultural activities (fertilizers, livestock waste etc.) and seasonal effect factors.In the current study usefulness of multivariate analysis for evaluation of river Satluj water quality assessment and identification of dominant factors and pollution sources for effective water quality management and determination of spatial and temporal variations in water quality illustrated.
本研究的重点是对印度北部旁遮普邦Satluj河的水质进行评估,并对2015-2016年期间在3个不同采样点监测的34个理化变量进行评估。采用主成分分析(PCA)/因子分析(FA)等多变量分析技术对水质数据集进行分析,以确定研究流域的水质特征。采用PCA/FA对数据结构的3个空间组(上、中、下三个空间组)数据集进行源识别。这些因素有条件地称为土壤结构和土壤侵蚀;家庭、城市和工业污水;农业活动(化肥、畜禽废弃物等)和季节性影响因素。在目前的研究中,说明了多变量分析对Satluj河水质评价的有效性,以及对有效水质管理和确定水质时空变化的主导因素和污染源的识别。
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引用次数: 0
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International journal of Earth Sciences and Engineering
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