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智能道钉技术在路面雪冰水状态测量中的应用研究
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作者 郭志勇 《华东公路》 2021年第6期103-105,共3页
介绍智能道钉系统,从获得路面多元化信息参数、构建状况基准值计算公式和提出雪冰水三态识别算法等方面,研究探讨了基于多感受器融合的路面雪冰水状况识别算法,并通过实例测量,验证了路面雪冰水测量技术的准确性。
关键词 智能道钉 路面测量 雪冰水 智慧设施 应用研究
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雪冰融水型洪水预报模型建立与应用 被引量:3
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作者 李智录 李抗彬 《西安理工大学学报》 CAS 2006年第3期253-256,共4页
运用多元线性回归分析法建立雪冰融水型洪水预报模型,并采用新疆下坂地水库上游伊尔列黑水文控制站和喀什探空站2001年的实测资料进行模型检验。若采用日平均流量相对误差不大于20%作为模型的评价标准,则模型的整体预报合格率为82%,属... 运用多元线性回归分析法建立雪冰融水型洪水预报模型,并采用新疆下坂地水库上游伊尔列黑水文控制站和喀什探空站2001年的实测资料进行模型检验。若采用日平均流量相对误差不大于20%作为模型的评价标准,则模型的整体预报合格率为82%,属于乙等预报水平,因此该模型可以用于实际的工程作业,解决施工期洪水预报难题。 展开更多
关键词 预报模型 多元线性回归
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Research on asphalt concrete pavement deicing technology 被引量:2
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作者 马辉 杨若冲 钱吮智 《Journal of Southeast University(English Edition)》 EI CAS 2014年第3期336-342,共7页
In order to reduce the cohesive force between pavement and ice, the approach of pavement surface coating with hydrophobic admixtures is investigated. The deicing effect of this approach is examined by the contact angl... In order to reduce the cohesive force between pavement and ice, the approach of pavement surface coating with hydrophobic admixtures is investigated. The deicing effect of this approach is examined by the contact angle test and the shear test. The durability of the approach is examined by the accelerated abrasion test, and the skid resistance of the pavement with surface coating is examined by the British pendulum test and the surface texture depth test. In the contact angle test, the contact angle between hydrophobic admixture and water is 100.2°. In the shear test, the maximum shear stress is 0.06 MPa for the specimen coated with hydrophobic admixture, which is much lower than that of the specimen without hydrophobic admixture coating, 3.5 MPa. Furth- ermore, the ice and asphalt surface are completely separated for the coated specimen while not for the uncoated specimen. Based on the accelerated abrasion test, the residual hydro- phobic admixture in the veins of the pavement after abrasion still has a deicing effect. From the skid resistance tests, the British pendulum number (BPN) and the texture depth (TD) of the specimen coated with hydrophobic admixtures are larger than those of the standard requirements. The overall experi-mental observation indicates that the approach can effectively reduce close contact between asphalt pavement and ice; therefore, it can be a promising solution to road icing problems in winter. 展开更多
关键词 DEICING hydrophobic admixture surfacecoating cohesive force DURABILITY
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Simulation of a Freezing Rain and Snow Storm Event over Southern China in January 2008 Using RIEMS 2.0 被引量:1
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作者 XIONG Zhe 《Atmospheric and Oceanic Science Letters》 CSCD 2013年第1期27-32,共6页
The Regional Integrated Environmental Model System (RIEMS 2.0) with NCEP Reanalysis II is utilized to simulate the severe freezing rain and snow storm event over southern China in January 2008, which caused severe d... The Regional Integrated Environmental Model System (RIEMS 2.0) with NCEP Reanalysis II is utilized to simulate the severe freezing rain and snow storm event over southern China in January 2008, which caused severe damage in the region. The relationships between the freezing rain process and the large-scale cir- culation, in terms of the westerly and low-level jets, water vapor transportation, and northerly wind area/intensity indices, were analyzed to tmderstand the mechanisms of the freezing rain occurrence. The results indicate the fol- lowing: (1) RIEMS 2.0 reproduced the pattern of precipi- tation in January 2008 well, especially for the temporal evolution of daily precipitation averaged over the Yangtze River valley and southern China; (2) RIEMS 2.0 repro- duced the persistent trough in the South Branch of the westerlies, of which the southwesterly currents trans- ported abundant moisture into southern China; (3) RIEMS 2.0 reasonably reproduced the pattern of frequencies of light and moderate rain, although it overestimated the frequency of rain in southern China. This study shows that RIEMS 2.0 can be feasibly applied to study extreme weather and climate events in East Asia. 展开更多
关键词 RIEMS 2.0 climate extremes freezing rain snow storm
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The Variability of the Snow and Ice Melt in Alpine Rivers in Northwestern China 被引量:2
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作者 LI Chang-bin QI Jia-guo +3 位作者 YANG Lin-shan YANG Wen-jin ZHU Gao-feng WANG Shuai-bing 《Journal of Mountain Science》 SCIE CSCD 2014年第4期884-895,共12页
The study of snow and ice melt (SIM) is important in water-scarce arid regions for the assessment of water supply and quality. These studies involve unique difficulties, especially in the calibration of hydro-models... The study of snow and ice melt (SIM) is important in water-scarce arid regions for the assessment of water supply and quality. These studies involve unique difficulties, especially in the calibration of hydro-models because there is no direct way to continuously measure the SIM at hydrostations. The recursive digital filter (RDF) and the isotopic hydro-geochemical method (IHM) were coupled to separate the SIM from eight observed series of alpine streamflows in northwestern China. Validation of the calibrated methods suggested a good capture of the SIM characteristics with fair accuracy in both space and time. Applications of the coupled methods in the upper reaches of the Hei River Basin (HRB) suggested a double peak curve of the SIM fraction to streamflow for the multi-component recharged (MCR) rivers, while a single peak curve was suggested for the rainfall-dominant recharged (RDR) rivers. Given inter-annual statistics of the separation, both types of the alpine rivers have experienced an obvious decrease of SIM since 196os. In the past 10 years, the SIM in the two types of rivers has risen to the levels of the 1970s, but has remained lower than the level of the 1960s. The study provided a considerable evidence to quantify the alpine SIMbased on the separation of observed data series at gauge stations. Application of the coupled method could be helpful in the calibration and validation of SIM-related hydro-models in alpine regions. 展开更多
关键词 Recursive digital filter (RDF) Isotopichydro-geochemical method (IHM) Snow and ice melt Separation the Hei River Basin
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祁连山西段水文水资源及其特征 被引量:5
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作者 陈广庭 曾凡江 《干旱区研究》 CSCD 北大核心 2011年第5期744-749,共6页
祁连山西段河流水系包括疏勒河流域和苏干湖流域,有时归并为疏勒河流域。疏勒河靠近欧亚大陆"旱极",降雨稀少,平原地区降雨量仅50 mm,山区降雨量随高度增加,最大可达170 mm左右。虽然雪线较高,因山体高大,西段祁连山冰川发育... 祁连山西段河流水系包括疏勒河流域和苏干湖流域,有时归并为疏勒河流域。疏勒河靠近欧亚大陆"旱极",降雨稀少,平原地区降雨量仅50 mm,山区降雨量随高度增加,最大可达170 mm左右。虽然雪线较高,因山体高大,西段祁连山冰川发育,雪冰融水在河川径流中占比重最大。随着气候向暖湿转型,降雨有增加趋势,雪冰融化速度加快,河流出山流量随之增多。但对山前绿洲的过度开发,水资源供需矛盾日益突出,演化成严重的生态问题。只能从合理调配水资源和建设节水型社会逐步缓解矛盾。 展开更多
关键词 资源 海拔高度 祁连山
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SubTOPMODEL模块构建及其在清水河的应用 被引量:1
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作者 丁辉 陈亚宁 +1 位作者 李卫红 陈亚鹏 《干旱区研究》 CSCD 北大核心 2007年第4期453-459,共7页
在TOPMODEL模型原理及其特点的基础上,结合塔里木河流域的雪冰水文特点,构建subTOPMODEL子模块,并与TOPMODEL模型松散耦合,以完善TOPMODEL模型。并把模型应用于垂直地带性明显,雪冰融水为重要补给的清水河流域,对原模型、改进模型、实... 在TOPMODEL模型原理及其特点的基础上,结合塔里木河流域的雪冰水文特点,构建subTOPMODEL子模块,并与TOPMODEL模型松散耦合,以完善TOPMODEL模型。并把模型应用于垂直地带性明显,雪冰融水为重要补给的清水河流域,对原模型、改进模型、实测值的两两比较表明,模拟结果走型匹配较好,但由于在高强度降雨情况下,超渗地面径流对洪峰贡献很大,而TOPMODEL模型基于变源产流面积理论,没有充分考虑超渗地面径流,计算主洪峰流量明显小于实测流量;改进模型的模拟效率系数为0.738,效率系数结果提高度不是令人满意,仅提高了0.051,但其春冬季节细微表现证实改进模型的有效性。 展开更多
关键词 subTOPMODEL 模块构建 塔里木河流域
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哈密地区冰川变化趋势分析 被引量:3
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作者 谢伟 姜逢清 《干旱区研究》 CSCD 北大核心 2014年第1期27-31,共5页
雪冰融水是哈密地区地表径流的一种主要方式。受全球气候变暖的影响,哈密地区的冰川处于加速融化的阶段,水资源成为哈密地区发展的主要瓶颈。通过对哈密地区冰川物质平衡、面积、厚度、冰川区水文气象等参数的观测,预测冰川水文和水资... 雪冰融水是哈密地区地表径流的一种主要方式。受全球气候变暖的影响,哈密地区的冰川处于加速融化的阶段,水资源成为哈密地区发展的主要瓶颈。通过对哈密地区冰川物质平衡、面积、厚度、冰川区水文气象等参数的观测,预测冰川水文和水资源的变化,为更好地利用好哈密地区有限的水资源,为可持续发展,提出应对措施。 展开更多
关键词 物质平衡 末端变化 储量 哈密 新疆
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