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期刊论文 8

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2024 1

2021 2

2015 1

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2009 1

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围岩增耦 1

土料设计 1

地下水水质 1

复合岩溶 1

宽级配碎石土 1

岩石-炸药匹配 1

工程特性 1

应力波 1

水下爆炸 1

水泥砂浆 1

波阻抗匹配 1

硗碛水电站 1

硫酸盐岩 1

碳酸盐岩 1

碾压试验 1

空腔解耦 1

粉碎区 1

钻孔爆破 1

防渗料 1

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Crushed rocks stabilized with organosilane and lignosulfonate in pavement unbound layers: Repeated load

Diego Maria BARBIERI, Inge HOFF, Chun-Hsing HO

《结构与土木工程前沿（英文）》 2021年第15卷第2期页码 412-424 doi: 10.1007/s11709-021-0700-5

摘要： The creation of the new “Ferry-Free Coastal Highway Route E39” in southwest Norway entails the production of a remarkable quantity of crushed rocks. These resources could be beneficially employed as aggregates in the unbound courses of the highway itself or other road pavements present nearby. Two innovative stabilizing agents, organosilane and lignosulfonate, can significantly enhance the key properties, namely, resilient modulus and resistance against permanent deformation, of the aggregates that are excessively weak in their natural state. The beneficial effect offered by the additives was thoroughly evaluated by performing repeated load triaxial tests. The study adopted the most common numerical models to describe these two key mechanical properties. The increase in the resilient modulus and reduction in the accumulated vertical permanent deformation show the beneficial impact of the additives. Furthermore, a finite element model was created to simulate the repeated load triaxial test by implementing nonlinear elastic and plastic constitutive relationships.

关键词： organosilane lignosulfonate crushed rocks pavement unbound layers repeated load triaxial test finite element analysis

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Fresh and hardened properties of high-strength concrete incorporating byproduct fine crushed aggregate

Dammika P. K. WELLALA, Ashish Kumer SAHA, Prabir Kumar SARKER, Vinod RAJAYOGAN

《结构与土木工程前沿（英文）》 2021年第15卷第1期页码 124-135 doi: 10.1007/s11709-020-0673-9

摘要： This paper presents the fresh and hardened properties of high-strength concrete comprising byproduct fine crushed aggregates (FCAs) sourced from the crushing of three different types of rocks, namely granophyre, basalt, and granite. The lowest void contents of the combined fine aggregates were observed when 40% to 60% of natural sand is replaced by the FCAs. By the replacement of 40% FCAs, the slump and bleeding of concrete with a water-to-cement ratio of 0.45 decreased by approximately 15% and 50%, respectively, owing to the relatively high fines content of the FCAs. The 28 d compressive strength of concrete was 50 MPa when 40% FCAs were used. The slight decrease in tensile strength from the FCAs is attributed to the flakiness of the particles. The correlations between the splitting tensile and compressive strengths of normal concrete provided in the AS 3600 and ACI 318 design standards are applicable for concrete using the FCAs as partial replacement of sand. The maximum 56 d drying shrinkage is 520 microstrains, which is significantly less than the recommended limit of 1000 microstrains by AS 3600 for concrete. Therefore, the use of these byproduct FCAs can be considered as a sustainable alternative option for the production of high-strength green concrete.

关键词： fine crushed aggregates quarry dust compressive strength splitting tensile strength drying shrinkage

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基于粉碎区控制的钻孔爆破岩石-炸药匹配方法

冷振东,卢文波,严鹏,陈明,胡英国

《中国工程科学》 2014年第16卷第11期页码 28-35

摘要：

合理的炸药-岩石匹配关系对于提高炸药能量的有效利用率和改善破碎效果有着重要意义。传统上强调的波阻抗匹配理论并不合理，文章从爆破破碎机理出发，提出了一种岩石-炸药匹配的新方法，在保证相邻炮孔间岩石充分破碎的前提下，通过对粉碎区的合理控制来确定钻孔爆破最优的炸药性能参数。该方法可以直观地反映爆破破碎效果及能量有效利用率，可操作性强。考虑相邻炮孔爆炸荷载的联合作用，修正了钻孔爆破破坏分区计算模型。在此基础上，针对具体工程目标给出了混装炸药耦合装药条件下不同等级岩石的炸药性能匹配参数。

关键词：钻孔爆破粉碎区岩石-炸药匹配波阻抗匹配

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硗碛水电站大坝碎石土防渗料工程特性及土料设计

王寿根

《中国工程科学》 2004年第6卷第7期页码 88-93

摘要：

硗碛水电站大坝高123 m，采用宽级配碎石土作为高土石坝心墙防渗料。对全料场进行了大量的室内工程特性试验研究以论证使用该材料的可行性，提出了设计及施工控制标准；选用代表性土料通过现场碾压试验验证该控制标准的合理性；对坝体、坝基进行了整体三维应力应变和渗流计算，分析了各种材料控制标准的合理性和共同作用下大坝的安全性；详实论述了防渗料工程特性研究方法、过程、成果，提出了心墙防渗料设计及施工控制标准。

关键词：硗碛水电站宽级配碎石土防渗料工程特性碾压试验土料设计

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水中爆炸对围岩增耦的实验研究

王占江,蔡宗义,郑学锋,朱玉荣

《中国工程科学》 2009年第11卷第4期页码 46-49

摘要：

为研究水中爆炸对围岩的增耦，在一个直径1.6 m的水泥砂浆半球体装置上，将其中心预留的直径0.3 m的腔室内注水和置入水泥砂浆芯体，对比性地进行了一系列的1.00 g TNT （2,4,6—三硝基甲苯）当量的填实和空腔爆炸实验。水泥砂浆球表运动测量数据表明，与水泥砂浆中的空腔解耦相比，水中空腔爆炸的解耦效果较差，尤其水腔中爆炸可大大增强爆炸能量的耦合。可以推断，水下爆炸会明显增强围岩中的爆炸应力波强度，近水域中的空中爆炸也可能会增强围岩中的爆炸能耦合，因而相对于围岩和堤坝中同距离、同药量的爆炸来讲，所引起

关键词：水下爆炸围岩增耦水泥砂浆应力波空腔解耦

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硫酸盐岩与碳酸盐岩复合岩溶发育机理与工程效应研究

卢耀如,张凤娥

《中国工程科学》 2008年第10卷第4期页码 4-10

摘要：

硫酸盐岩和碳酸盐岩常共同分布，以往多是分别研究其岩溶发育。文章主要从自然条件上研究两者复合岩溶发育的机理，探讨了化学岩溶作用过程和生物岩溶作用的机理。复合岩溶中，陷落柱是很重要的一个特征。文章也探索了复合岩溶作用中，有关岩溶地下水的水质情况。

关键词：硫酸盐岩碳酸盐岩复合岩溶陷落柱地下水水质

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堆石混凝土坝概述及下一代混凝土坝施工技术展望 Review

Feng Jin, Duruo Huang, Michel Lino, Hu Zhou

《工程（英文）》 2024年第32卷第1期页码 100-106 doi: 10.1016/j.eng.2023.09.020

摘要：

Over the past few decades, one of the most significant advances in dam construction has been the invention of the rock-filled concrete (RFC) dam, which is constructed by pouring high-performance selfcompacting concrete (HSCC) to fill the voids in preplaced large rocks. The innovative use of large rocks in dam construction provides engineers with a material that requires less cement consumption and hydration heat while enhancing construction efficiency and environmental friendliness. However, two fundamental scientific issues related to RFC need to be addressed: namely, the pouring compactness and the effect of large rocks on the mechanical and physical properties of RFC. This article provides a timely review of fundamental research and innovations in the design, construction, and quality control of RFC dams. Prospects for next-generation concrete dams are discussed from the perspectives of environmental
friendliness, intrinsic safety, and labor savings.

关键词： Rock-filled concrete dam Pouring compactness Effect of large rocks Intelligent quality control Unmanned dam construction

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内蒙古额济纳旗拐子湖地区花岗岩地球化学特征及其地质意义

闫海卿,陈元,范模春、任建梅、姜珊、吕金梁、赵世翔、范超峰

《中国工程科学》 2015年第17卷第2期页码 97-105

摘要：

内蒙拐子湖一带发现一批中小型Au、Cu矿床（点），空间上与小型花岗岩株（枝）相伴而生。本文利用岩石地球化学方法结合野外宏观岩石学研究，揭示岩浆源区性质与成矿的内在联系。研究表明，拐子湖花岗岩属高钾过铝质的钙碱性系列，轻、重稀土元素分馏明显，LREE相对富集（（La/Yb）N=3.78～20.13）。微量元素ORG标准化显示，富集Rb、Ba、Th、K等大离子亲石元素（LILE），亏损Nb、Ta、Sr、P等高场强元素（HFSE）。Sr（（35.82～364.45）×10-6，Yb（0.79～2.51）×10-6属于低Sr、低Yb型花岗岩，岩浆源区为下地壳火山岩（玄武岩），岩浆形成于碰撞造山-地壳增厚过程诱发的下地壳局部熔融。一系列证据表明，恩格尔乌苏蛇绿岩带所代表的中亚造山带东部古亚洲洋的消失闭合发生在早二叠世末。

关键词：额济纳旗；喜马拉雅型花岗岩；岩石地球化学；地壳增厚；中亚造山带

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标题作者时间类型操作

Crushed rocks stabilized with organosilane and lignosulfonate in pavement unbound layers: Repeated load

Diego Maria BARBIERI, Inge HOFF, Chun-Hsing HO

期刊论文

Fresh and hardened properties of high-strength concrete incorporating byproduct fine crushed aggregate

Dammika P. K. WELLALA, Ashish Kumer SAHA, Prabir Kumar SARKER, Vinod RAJAYOGAN

期刊论文

基于粉碎区控制的钻孔爆破岩石-炸药匹配方法

冷振东,卢文波,严鹏,陈明,胡英国

期刊论文