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格构锚固技术在治理滑坡中的应用 总被引:2,自引:0,他引:2
介绍了格构锚固的特点、结构机理及其在滑坡防治中的作用。格构锚固技术具有较好地适应地形变化、受力明确、加固效果可靠、施工速度快、后期维护方便和美化环境等优点。并以三峡库区兴山县复建公路黄树岭滑坡为例,说明格构锚固在滑坡防治应用中具有较好的效果。 相似文献
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重庆市西南制药一厂位于长江左岸寸滩,该厂在厂区开挖坑,将2万m~3弃土堆放在斜坡上。1990年产生滑坡,将原有为栏截弃土设置的重力式挡土墙(耗资180万元),以每天2—3cm的速度向外推移。南江水文队承接治理,采用锚固桩组合抗滑墙新方法,共施工Φ1.2m竖桩17根,灌注混凝土407.93m~3,总投资110万元。经检测,合符《工业与民用桩基础设计与施工规程》要求,达到省费效好之目的。 相似文献
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针对采用“边开挖、边加固”施工方法的高边坡工程对预锚施工速度提出的要求,本文在室内及现场试验的基础上,研究开发出快速锚固技术。研究内容包括:高早强、抗侵蚀锚根胶结材料及内锚固段压力灌浆工艺两个方面,其中部分成果-高早强、抗侵蚀锚根胶结材料已广泛用于李家峡水电站岩质高边加固施工中。解决了边坡开挖和加固的许多矛盾,大大加快了施工速度,取得了明显的经济效益和社会效益。 相似文献
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格构锚固是将护坡与支挡有机地结合在一起抗滑的一种新型支挡加固措施,它适合于疏松介质边坡的整治。其特点是施工时不需要大型机械,不必开挖扰动边坡,施工安全快速,与植被恢复相结合还可美化环境。以宕昌县民福村边坡为例,说明格构锚固在边坡防治应用中具有较好的效果。 相似文献
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传统治理技术在汛期会出现漏水问题,导致治理效果较差,无法满足经济不断发展的社会,为了改善该问题,提出了橡胶坝技术在水利治理中的应用方法研究。根据橡胶坝结构特点,探讨橡胶坝安装前期工作,待准备工序完成之后,对坝袋进行安装,使锚固线与坝袋中心线的对应线重合,并对坝袋进行锚固处理,保证锚固坝袋密封性,不会出现漏水问题。设计橡胶坝最适高度,使其平铺于中边墩墙上,不会产生褶皱。选择正确楔块尺寸,锚固槽和楔块断面进行施工设计,由此完成水利治理。通过实验对比结果可知,橡胶坝技术比传统技术治理效果好,最高治理效果可达到95%,给人们生活带来极大便利。 相似文献
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苏北玄武岩分布区滑坡研究与防治 总被引:2,自引:0,他引:2
在苏皖交界处的盱眙、六合新生代玄武岩分布区,滑坡灾害十分发育,给当地经济建设和人民生活带来了较大危害。通过分析滑坡类型、地质特征和活动规律,提出了防治灾害的具体措施。 相似文献
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镇江谏壁钼矿床钼的迁移成矿机理初探 总被引:2,自引:1,他引:2
通过对有关钼配合物的形成条件、物理化学性质的考察、碳酸盐、CO2与CO、碳氢化物的相关性以及有关矿床的矿物流体包裹体液相、气相化学成分等的研究,结合镇江谏壁钼矿床成矿的地质背景、矿床特征、钼矿物的共生、伴生矿物组合等的实际情况,认识到镇江谏壁钼矿中钼是呈易挥发的羰基配合物从地球深部迁移至地壳浅部,在有利部位被氧化、硫化沉淀富集成矿。 相似文献
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介绍了高压旋喷法在镇江市南徐路软土路基处理中的应用,提出了旋喷桩的施工工艺、质量控制要点,对应用效果作了简要评述。 相似文献
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This study focuses on the specifics of modern geological conditions and deformations of landslide-affected slopes within the historical center of the city of Odessa. Landslide protection was developed in the 19th century and during 1960s on adjacent coastal areas, according to urban planning and landslide protection plans. The historical center was formed around the Odessa port and includes several unique architectural monuments such as the 142-m-long Potemkin Stairs, Primorsky Boulevard, and the Odessa Opera Theater. Architectural and urban planning designs in the city include landslide protection and preventive measures. Results of landslide studies show that landslide development along the Odessa coast is influenced primarily by tectonic movements and the heterogeneity of the geological substrata. All historical and contemporary protective and preventive landslide measures maintain their engineering geological integrity and effectiveness despite the differences in time of their construction and design. 相似文献
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介绍了镇江市的矿产资源特征和条件,结合全市经济未来的发展目标,提出了相应的矿业发展战略和对策。 相似文献
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选取长江下游世业洲的第四纪钻孔资料,研究了重矿物的垂向分布特征,以此探讨长江镇江段第四纪以来的沉积类型以及物源演变。结果显示,该区自中更新世开始接受沉积,依次形成河床相、边滩相、漫滩相、河口三角洲相。重矿物自下而上分为2个组合段,分别对应更新世和全新世。更新世地层以角闪石、蓝晶石、石榴石等作为特征矿物,且不稳定矿物含量高于稳定矿物,表明沉积物以近源居多;全新世特征矿物为辉石和钛铁矿,稳定矿物含量高于不稳定矿物,重矿物种类与现代长江中上游类似,表明此阶段沉积物以远源物质为主。 相似文献
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Landslide Hazard Zonation using Remote Sensing and GIS: a case study of Dikrong river basin, Arunachal Pradesh, India 总被引:3,自引:0,他引:3
Landslides are among the most costly and damaging natural hazards in mountainous regions, triggered mainly under the influence
of earthquakes and/or rainfall. In the present study, Landslide Hazard Zonation (LHZ) of Dikrong river basin of Arunachal
Pradesh was carried out using Remote Sensing and Geographic Information System (GIS). Various thematic layers namely slope,
photo-lineament buffer, thrust buffer, relative relief map, geology and land use / land cover map were generated using remote
sensing data and GIS. The weighting-rating system based on the relative importance of various causative factors as derived
from remotely sensed data and other thematic maps were used for the LHZ. The different classes of thematic layers were assigned
the corresponding rating value as attribute information in the GIS and an “attribute map” was generated for each data layer.
Each class within a thematic layer was assigned an ordinal rating from 0 to 9. Summation of these attribute maps were then
multiplied by the corresponding weights to yield the Landslide Hazard Index (LHI) for each cell. Using trial and error method
the weight-rating values have been re-adjusted. The LHI threshold values used were: 142, 165, 189 and 216. A LHZ map was prepared
showing the five zones, namely “very low hazard”, “low hazard”, “moderate hazard”, “high hazard” and “very high hazard” by
using the “slicing” operation. 相似文献