六安市2003年洪水调查分析

对沿淮行蓄洪区、部分洼地、圩区以及淠河水系圩口溃破情况进行了洪水调查,并进行分析、论证及部分还原计算.     

定向造斜及水平钻进连续取心技术

高精度定向钻进技术在石油钻井、可溶性矿产资源的利用开发等方面已经有了很高的水平,绳索取心技术在我国也已有了几十年的使用历史,都属于相对成熟的应用技术。将二者有机结合起来,可以解决不规则沉积矿床、隐伏矿床等矿床勘探和特殊工程地质勘察难题。探讨了该技术的应用领域、关键技术及创新点,简要介绍了实现该技术目前正在研制的相关钻具结构及其技术参数。     

激光共聚焦原位观察水泥早期水化(英文)

采用激光共聚焦显微镜对水泥早期水化过程进行原位观察,样品尺寸为35mm×25mm×5mm的水泥压实体,通过滴加水使压实体中的水泥水化。结果表明:压实体的水化对于正常水泥浆体的水化有着很好的参考作用;压实体样品与水接触8h,表面生成大量的水化产物,水化16h,大部分孔洞被水化产物填充,水化1d,水泥水化到达稳定期,微结构逐渐变密实。     

化工仪表及自动化教学中的溯源学习和调研实践

化工仪表及自动化课程涉及的知识面广,内容繁杂,技术的新老交替,更新较快,应该了解和认识检测仪表和自动化技术发展的历史,把握其内在的发展规律;同时针对该课程的实际应用性较强的特点,安排设置调研实践活动,以充分实现理论联系实际的教学目标。     

考虑渗透率和流体黏度的致密油藏探测半径

探测半径是评价油藏控制程度和井控储量的重要参数。为了解决低渗透致密油藏探测半径计算方面存在的问题,建立了考虑渗透率和黏度的模型,推出了新的导压系数,得到了考虑流体和地层因素的微分方程。在此基础上,应用稳态依次替换法和质量守恒法推导出相应的探测半径方程,并用数值方法求解。研究结果表明:低渗透致密油藏地层中新的导压系数比经典理论中的导压系数小;探测半径与井的产量有关,同时也与渗透率和黏度的变形系数有关,渗透率的变形效应会减小探测半径,黏度的变形效应会增大探测半径。     

一起火灾复核案件的分析探讨

对一起火灾案件进行复核分析,针对当事人提出的大队原认定部位和原因存在争议的问题进行重新认定。支队火灾调查执法办案中心经深入调查后,采取现场还原、视频分析和现场重建等技术,指出大队原认定结论中的不足,并对原认定结论予以撤销。通过该起火灾案件的复核分析,指出日常火灾原因认定中容易被鉴定结论所误导的情形,提出了火灾调查中应该注意的细节和解决火灾原因争议的方式和方法。     

Investigation and consideration on landslide zoning of multiple slope failures and debris flows of 2014 disaster in Hiroshima,Japan

This study was intended to examine the mechanism of multiple slope failures and debris flows that occurred in the outskirts of Hiroshima on 20th August 2014. A field survey of the mountain stream where large-scale damage was incurred was carried out and the characteristics of debris flows which made serious damages were investigated. There were five findings of this study. (1) The initiation of debris flows was not limited to thin and planar shallow failures, but also showed V or U shapes, where the eroded sediments seemed to be pushed out by artesian water, and the eroded depth exceeded several meters at many locations. (2) There were areas with high permeability, such as faults, fracture zones, and joints in Mt. Abusan. It is inferred that the constantly present groundwater in these areas became artesian water because of a large amount of rainfall in upstream locations. This quickly destabilized the slopes on a large scale. (3) There were at least three estimated debris flows at the mountain stream above Midorigaoka prefectural apartments in Yagi 3-Chome, where the worst damage occurred. The mountain stream near Abu-no-Sato housing complex also had multiple debris flows. Here, the secondary debris flow changed its flow path because of the presence of sediments from an earlier debris flow. (4) The actual volumes of flowed mass were much larger than that predicted at 11 of the 18 mountain streams in Midori-i and Yagi districts. The volume of the mass of five of these mountain streams was more than twice the estimated volume. It is necessary to modify the method of calculating the volume of unstable sediments in the mountain stream. (5) It was found that the devastating damage of buildings and human lives took place in the areas well beyond the special restricted zones. The present method to designate the special restricted zone must be revised considering such problems as the underestimation of the volume of unstable sediments, the assumptions of a single debris flow and on the direction of debris flow, and the effect of the difference on rock and soil types.     

挥发性有机污染场地原位评价的膜界面探测器MIP研究综述

膜界面探测器(Menmberane Interface Probe, MIP)是应用与土壤和地下水挥发性有机污染场地原位勘测的技术设备。近年来被广泛应用于VOCs污染场地勘测中。对MIP的结构、测试原理以及与其相匹配的气相色谱检测器进行了介绍,综述了MIP在国内外污染场地勘测的应用案例,总结了国外学者针对MIP测试精度进行的研究结果。分析表明,MIP原位测试能全面地、真实地反应污染场地挥发性有机物分布状况,减少污染场地勘查成本,提高污染场地勘查效率。通过与其它原位测试探头的结合,可同时对污染场地岩土工程特性进行评价,进而为后续污染场地治理方案的制定提供依据。     

GIS在城市公共停车资源调查与规划中的应用

随着城市的蓬勃发展,停车难问题已经严重制约百姓的出行,通过公共停车资源的调查与规划来缓解城市停车难成为市政府一项基础工作。传统的调查与规划是采用纸质地图现场人工量取的方式进行,对于成果的统计分析以及应用非常繁琐,而本文以太原市公共停车资源调查与规划为例,从数据管理、数据质检、查询统计、输出打印等方面阐述了GIS在该项目中的应用。为GIS在公共停车资调查与规划工作的应用提供了有效参考。     

基于铁路客站商业开发视角的现场调查及设计探索

铁路客站的商业开发已是必然趋势。本文基于对多个建成铁路客站的现状和存在问题的现场调研,结合铁路商业项目的需求,根据铁路的管理特点,提出若干铁路客站设计方面的可行性建议。