Composite hydrogeological investigation and characterisation methods applied at a nuclear power plant site in Taiwan

Drawing from the lessons learnt from the Fukushima nuclear disaster in Japan, the assessment of subsurface environmental hazard around nuclear power plants has emerged as a critical task. Consequently, aiming to better understand the possible environmental impact of radiation leaks into the groundwater, a prescreening programme was initiated in 2011 by the Taiwanese government. As part of this programme, this study conducted various borehole prospecting techniques to identify in situ hydrogeological characteristics at Chin‐Shan Nuclear Power Plant. Borehole electrical log, sonic log and temperature/conductivity log were conducted to explain the regional lithologic conditions and permeability of the formation. In conjunction with this, the interwell tracer and pumping test was carried out to simultaneously determine the hydraulic parameters. In our opinion, the implementation of such in situ end‐to‐end investigations is essential in interpreting in situ fluid and solute transport dynamics prior to programming any numerical scheme for early warning, vulnerability assessment and regular monitoring of a nuclear power plant site.     

公路隧道局部塌方处理技术

结合具体工程实例,分析了公路隧道塌方的原因,提出了塌方段处理方案和具体的处理措施,实践证明:采用该方案处理塌方,操作方便,施工难度小,开挖支护完成后塌方体段围岩稳定,为后续施工节约了时间,值得推广应用。     

盐卤水平井对接连通技术在长宁盐矿的应用

随着水平钻井技术的发展和完善,对接连通法开采方式已成为目前国内外盐矿开发最有效的技术手段。长宁盐矿盐卤水平井对接连通的成功实施不仅为盐卤、石油开采,而且为其他流体矿藏的开采提供了一条新的途径。     

岩溶地面塌陷区地质灾害治理及桩基设计探究

对徐州岩溶地区高层建筑的地面塌陷情况进行了分析,并对软土地区桩基设计计算方法、地基模型及桩基沉降变化模型作了详细探究,从而使桩基设计技术更加完善。     

浅谈灌注桩成孔质量检测中存在的问题

根据对灌注桩试成孔的检测,从而评价场地地层情况与勘察结果是否吻合,所选择设备、机具及施工工艺和参数是否合理;以及对试成孔检测本身存在的问题提出笔者的分析,从而更好地控制灌注桩质量,为工程服务。     

Analysis of a bridge collapsed by an accidental blast loads

Analysis of the structural failure of a bridge caused by an accidental fireworks explosion is presented in this paper. The equivalent mass of TNT due to the fireworks explosion and the structural response of the bridge due to the dynamic load imposed by the explosion are modeled by engineering algorithms and numerical simulations. Analysis confirmed that bridge failure occurred due to the blast load and there was no inherent design defect. The results of this investigation are relevant towards understanding future events wherein a dynamic load might be accidentally applied to fixed structures.     

非均质煤层瓦斯分布特征及钻孔抽采瓦斯运移规律研究

为了提高煤矿瓦斯抽采率，节约瓦斯抽采时间，分析了非均质煤层瓦斯分布特征及钻孔抽采瓦斯运移规律，采用透气性系数研究了非均质煤层瓦斯压力分布特点；分析了非均质煤层单钻孔瓦斯压力分布、原始瓦斯压力、原始透气性系数对有效抽采半径的影响。研究对指导现场瓦斯抽采以及促进煤矿安全生产具有重要意义。     

某水电站高喷防渗墙检测方法综合分析

该文通过在一次检测过程中运用多种检测手段对某水电站防渗墙进行检测,并就检测结果进行综合分析,从而得出防渗墙工程中的一些值得借鉴的工程经验.     

钢筋混凝土拆除爆破炮孔装药量的确定

本文从分析钢筋混凝土爆破破坏形态出发,对钢筋混凝土的配筋情况,如强度、配筋网规格、钢筋层数等对拆除爆破的影响作了量化处理,在前人的基础上大胆提出了钢筋混凝土加强抛掷爆破的炮孔装药量计算公式,并在实际工程中得到了验证。     

谈过陷落柱施工技术及措施

以国内某煤矿过陷落柱施工为例,根据地质资料,介绍了其施工方案及工艺流程,着重对巷道断面规格的支护形式及支护参数进行了分析,总结了施工质量控制要求,为其他矿山井下施工提供参考。