瑞利波测试技术在道路工程质量检测中的应用     

周启国  王龙国  朱建海  康建华  郭立瓴 《海洋学研究》2008,26(1):90-94

结合道路工程路基施工质量检测,介绍了瑞利波测试技术的方法和原理。实践表明,该方法在检测道路工程质量时具有无损性、简易性等特点,利用瑞利波传递函数的相干特性等简单参数可方便地评价路面与路基的接触性状,瑞利波测试技术在路基工程质量检测中有着广泛的应用前景。应用瑞利波法建立地基剪切波速与地基刚度系数、承载力的对应统计关系还需进一步探讨。  相似文献   

论大历十才子与宋诗     

邓建  张学松 《广东海洋大学学报》2008,28(2):56-60

宋诗是宋型文化在文学层面的折射与反映。大历时期,宋型文化的某些因素已经开始萌生,故而大历十才子诗歌已经开始具备宋诗的某些特征。在诗歌题材、审美理想、创作艺术等各个层面,大历十才子与宋诗之间都存在一定的渊源关系。大历十才子对宋诗的影响是正负兼具、交互迭加的,而不是停留于字句表相的单一作用与直线演进。  相似文献   

Zonal character of failure near the wells and openings in high depth conditions     

V.V. Makarov L.S. Ksendzenko V.M. Sapelkina A.A. Opanasyuk N.A. Opanasyuk E.N. Jashkova 《东北亚地学研究》2006,9(2):168-172

Rock mass failure on the high depth near the underground openings often has zonal character. The mechanism of this phenomenon consists in the periodical character of stresses in surrounding rock mass and developing of tensile macrocracks at the places （zones） of maximum tangentional stresses. Mathematical model of the high stressed rock mass is developed on the base of the defect media mechanics and nonequilibrium thermodynamics principals. The correspondence between the experimental research of faulted zonal structures near the high depths openings and mathematical model calculation is achieved. Relationships between the width of cracking zones and rock mass strength property have been determined.  相似文献   

贵州兴仁县落水洞金矿的发现及其研究意义   总被引：1，自引：0，他引：1  

舒家荣  王朝宗 《贵州地质》2008,25(3)

根据灰家堡背斜成矿规律分析研究,2006年11月在回龙镇落水洞布置ZK001钻孔,在其深部发现高品位矿体,这一发现为太平洞金矿提供了后备勘查基地,填补灰家堡背斜中部无工业矿体的空白。本文简要地论述其地质特征和研究意义。  相似文献   

贵州省遵义县鸭溪镇底水河可燃气体逸出点机理浅析     

李沛刚 《贵州地质》2008,25(4)

贵州省遵义县鸭溪镇底水河逸出可燃气体是一较为少见的自然地质现象。本文从当地特定地质、地貌特征入手,初步分析了这一现象形成条件和机理。  相似文献   

多宝山铜矿硫同位素空间分布特征   总被引：4，自引：0，他引：4  

冯健行 《地质与勘探》2008,44(1):46-49

多宝山铜矿是一大型斑岩铜矿床.矿床位于大兴安岭隆起带与松辽沉降带的接舍部位.矿区出露的地层主要是奥陶系中统多宝山组地层岩性主要为安山岩、凝灰岩、凝灰质砂岩、砂岩;侵入岩主要是华力西晚期花岗闪长斑岩和花岗闪长岩;围绕花岗闪长斑岩体具有蚀变分带现象,由内向外分为钾化带-绢云母化带-青磐岩化带,矿体多产于绢云母化带内;研究表明,多宝山铜矿形成于中低温条件下,矿体内金属硫化物具有分带性,由矿体中心向边缘依次是斑铜矿-黄铜矿-黄铁矿.文章对多宝山铜矿硫同位素空问分布特征以及与矿体富集部位的对应关系进行了分析,并解释了形成这一现象的原因.  相似文献   

柴达木盆地西南缘乌南油田新近系古地震纪录及储集性能研究   总被引：4，自引：1，他引：3  

杨剑萍  聂玲玲  张琳璞  杨君  张跃 《地质学报》2008,82(6):805-812

柴达木盆地为一新生代以来形成的叠合盆地,由于多期构造活动,盆内形成了多组断裂系统。受新近纪昆仑山北侧断裂活动的影响,盆地西南缘乌南地区地震活动强烈,发育一系列与地震有关的震积岩,形成多种类型的与地震活动有关的软沉积物变形构造。乌南油田新近系的软沉积物变形构造主要包括重荷模、火焰构造、震积砂枕、砂球构造、假结核、枕状层、液化砂泥岩脉、泄水构造、层内错断、地裂缝、串珠状构造、微褶皱纹理等。本区震积岩的岩石类型主要包括震褶岩、震裂岩、震塌岩、自碎屑角砾岩等。地震活动使岩层产生大量的微裂缝,裂缝沟通了原有的孔隙。尽管储集层孔隙度没有大幅度增加,但能够极大地改善储集层渗透性,使渗透率大幅度增加。震积岩特别是震裂岩和震碎角砾岩是一种潜在的油气储层,为油气勘探和开发提供了新的视角和领域。  相似文献   

GPS软件接收机信号特征分析   总被引：2，自引：0，他引：2  

李伟  胡丛玮 《测绘信息与工程》2008,33(5)

介绍了GPS信号的组成及特性,研究了信号的预处理过程,用Matlab实现了采样后的GPS信号的特征的绘制.  相似文献   

乙酸和碳酸对粘土土工性状影响的试验     

李涛  胡金生  肖红  任秀文 《煤田地质与勘探》2008,36(6)

对加入不同浓度乙酸和碳酸的土样做室内土工试验,并进行机理分析。试验结果表明:乙酸根、碳酸根通过改变粘土颗粒双电层的厚度、极性水分子的吸附量,使土的结构发生凝聚或分散,引起压实粘土的塑性、渗透性等变化。其中,乙酸根是通过溶解粘土矿物中的铝,提高了粘土的渗透系数和塑性指数;而碳酸根是以其与金属离子发生化学反应生成难溶性碳酸盐的方式,降低了粘土的渗透系数。这为判断垃圾堆放场粘土衬垫工程的稳定性提供了依据。  相似文献   

Exploring a combination of objective and subjective assessment in landscape classification: Side case from Turkey     

《Applied geography (Sevenoaks, England)》2017

Landscape is a product of interactions between human and nature that bring multiple characteristics to discrete geographic settings. Landscape character assessment (LCA) is a process of describing, mapping and evaluating distinct characters in the landscape. The aim of this study is to integrate objective and subjective assessment in landscape classification in the case of Side district in Antalya, Turkey. The methodology of the study is based on a holistic approach to combine map-based biophysical information and on-site visual landscape characteristics into the LCA process. Principal component and cluster analysis were used to understand relationships and spatial patterns between 29 landscape character areas and types which were previously defined by previous work. The main source of data was landscape characters, and 35 character attributes was processed as variables. Cluster analysis showed that landscape character areas and types in Side were gathered into two main cluster groups and five sub clusters. The majority of landscape character areas tended to constitute separate subclusters, while character types appeared to form large groups of clusters in which recognisable land-use patterns were the main activity. According to the cluster dendrogram, it was possible to interpret spatial linkages between the clusters of character areas and types and to delineate geographic classification of the main landscapes in Side. Scaling relations for LCA in a pattern-process-product framework provided an explicit understanding of the data layers in landscape classification and where the clustering can function. Biophysical characteristics comprised the pattern of the landscape, while visual characteristics demonstrated the condition of the landscape as a product. The process depends upon transformation between the objective and the subjective as a link between pattern and product. Further steps would be to conduct semistructured surveys to assess local perceptions and preferences about landscape characters for landscape quality objectives.  相似文献