大体积抗渗抗冻混凝土施工技术

以某电厂冷却水排水尾部建筑工程施工为实例，介绍应用大体积混凝土温度裂缝理论指导施工，以及施工质量控制措施。     

根据工程地质条件分析某水库大坝的渗流稳定性

对某水库大坝存在的渗流现象进行了分析,综合评价了水库大坝的渗流稳定性,对使用中的水库大坝进行了安全鉴定并提出了相应的处理措施。     

尾矿库工程中的若干问题探讨

通过分析研究鲁中冶金矿业集团的御驾泉尾矿库实例，对尾矿坝的破坏，尾矿库地下水渗漏和细粒尾矿库扬尘三个方面进行了研究。     

粘土固化浆液在强透水层中防渗试验

防渗用粘土浆液中加入少量粘土浆液固化剂,被注浆的透水地层,其结石强度和渗透系数值达到防渗要求。用粘土固化浆与水泥浆在坝基强透水地层做了高喷截渗时比试验。     

土壤固化剂在渠道防渗工程中的应用

土壤固化剂在渠道防渗工程中的应用在国内尚属首次,其主要工序为将土壤固化剂与土壤充分搅和形成固化土,采用专用砌块成型机将固化土制成砌块,用于渠道防渗,技术可靠、工程造价低,具有良好的性能价格比。     

石门灌区防渗渠道施工及抗冻害措施

石门灌区配套工程是我国延边州大型水利灌溉项目,结合石门灌区配套工程施工的实际情况,对渠道防渗施工技术、抗冻害等问题进行探讨,根据实践经验总结出我国东北地区大型灌区防渗渠道施工、抗冻害措施等建议,供大家参考。     

劈裂灌浆治理白龙潭水库渗漏

本文介绍了劈裂灌浆技术在白龙潭水库大坝防渗与加固中的应用。对劈裂灌浆机理、主要技术参数和灌浆过程中出现的问题和解决方法进行了探讨,为今后的险库病库处理提供了参考。     

Unconfined compressive strength prediction of soils stabilized using artificial neural networks and support vector machines

This study aims to improve the unconfined compressive strength of soils using additives as well as by predicting the strength behavior of stabilized soils using two artificial-intelligence-based models. The soils used in this study are stabilized using various combinations of cement, lime, and rice husk ash. To predict the results of unconfined compressive strength tests conducted on soils, a comprehensive laboratory dataset comprising 137 soil specimens treated with different combinations of cement, lime, and rice husk ash is used. Two artificial-intelligence-based models including artificial neural networks and support vector machines are used comparatively to predict the strength characteristics of soils treated with cement, lime, and rice husk ash under different conditions. The suggested models predicted the unconfined compressive strength of soils accurately and can be introduced as reliable predictive models in geotechnical engineering. This study demonstrates the better performance of support vector machines in predicting the strength of the investigated soils compared with artificial neural networks. The type of kernel function used in support vector machine models contributed positively to the performance of the proposed models. Moreover, based on sensitivity analysis results, it is discovered that cement and lime contents impose more prominent effects on the unconfined compressive strength values of the investigated soils compared with the other parameters.     

水工沥青技术指标讨论——十三陵上池面板沥青技术要求说明

沥青混凝土面板的低温开裂是北方地区亟待解决的问题,特别是抽水蓄能电站由于水位频繁骤降,进一步恶化了低温运行条件.根据十三陵工程上池的运行要求和大量室内试验成果,对沥青的针入度、软化点、延度和提高沥青的低温性能关系较明显的低温延度、含蜡量以及沥青的耐久性指标和其它项目分别进行了论证.     

碾压混凝土坝的渗流分析研究

针对碾压混凝土坝渗流特性，采用无厚度缝面单元模拟型进行渗流分析，在不增加网格节点的前提下，不但能高效地刻画出层面和缝面的特点，而且能对具有强透水能力的冷缝或裂缝进行细致的模拟，基本上解决了碾压混凝土坝的渗流建模问题。计算结果表明，采用无厚度缝面单元模型，更加符合坝体的渗流实际情况，提高了求解的精度。