浅谈低山丘陵地区1/5万地质灾害调查工作——以江西省定南县为例

近年来,全国各省市陆续在开展1/5万地质灾害调查工作,不同地貌区地质灾害发育情况不同,调查方法与要求亦有区别。平原岗丘地区往往存在地质灾害点达不到观测点数量要求,需要增加地质环境点来满足精度;而西南高山区灾害点少但规模大,许多灾害点往往要通过大比例尺的测绘才能调查清楚。相比之下,低山丘陵地区地质灾害点具有点多面广的特点,规模多为小型,调查任务艰巨。本文以江西省定南县为例,阐述低山丘陵地区1/5万县(市)地质灾害调查的技术方法与认识,以期对类似地区的调查有所帮助。     

SPATIAL VARIATION OF HILLSLOPE PROFILES IN THE CUMBERLAND PLATEAU,KENTUCKY

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对目前我国高校非开挖技术教育的思考

非开挖技术是一项新兴技术,自非开挖技术引入我国以来,发展迅速。但我国高校的非开挖技术教育发展却显得相对缓慢。通过对我国高校非开挖技术教育现状的分析,初步探讨了我国高校非开挖技术教育水平提升的有关问题。     

基于3S技术的武汉城市湿地景观变迁

采用3S技术,以武汉城区为研究区,采用1991年、2003年Landsat-TM影像及2009年的CBERS02B-CCD影像为数据源,运用多尺度影像分割与目视解译相结合的方法提取3期湿地信息,并分析武汉城区近18年来湿地景观格局动态变迁。结果表明,近18年间城市湿地总面积减少,斑块的数目增加,破碎程度增加,平均斑块形...     

The social and political complexities of learning in carbon capture and storage demonstration projects

Demonstration of a fully integrated power plant with carbon capture and storage (CCS) at scale has not yet been achieved, despite growing international political interest in the potential of the technology to contribute to climate change mitigation and calls from multiple constituents for more demonstration projects. Acknowledging the scale of learning that still must occur for the technology to advance towards deployment, multiple CCS demonstration projects of various scales are emerging globally. Current plans for learning and knowledge sharing associated with demonstration projects, however, seem to be limited and narrowly conceived, raising questions about whether the projects will deliver on the expectations raised. Through a comparison of the structure, framing and socio-political context of three very different CCS demonstration projects in different places and contexts, this paper explores the complexity of social learning associated with demonstration projects. Variety in expectations of the demonstration projects’ objectives, learning processes, information sharing mechanisms, public engagement initiatives, financing and collaborative partnerships are highlighted. The comparison shows that multiple factors including the process of building support for the project, the governance context and the framing of the project matter for the learning in demonstration projects. This analysis supports a broader conceptualization of learning than that currently found in CCS demonstration plans - a result with implications for both future research and practice.     

西安市地震应急指挥技术系统设计与实现

本文从系统总体架构设计、系统功能设计与应用成果、系统特色4个方面简要介绍了西安市地震应急指挥技术系统设计与实现情况.本系统是首个应用于省会城市地震应急工作,并基于国产Server GIS软件平台研制开发出的地震应急指挥技术系统,可为大城市地震应急指挥技术系统的建设与发展提供可借鉴的经验.     

2010年中国非开挖行业调查

本文分析了中国地质学会非开挖技术专业委员会对2010年我国非开挖行业的调查和统计,主要是水平定向钻机的销售情况和非开挖管道修复与更换方法在管道工程施工中的应用情况,最后总结了2010年我国非开挖行业发展的几个特点。     

2010年非开挖工程的发展近况

在管道检测、探测、铺设、修复和更新等工程中,非开挖技术正在发挥着巨大的作用。通过笔者参加的2010年11月国际非开挖技术协会（ISTT）在新加坡召开的第28届年会和之前在新加坡南洋理工大学召开的第12届国际非开挖技术研讨会,从国际会议的论文中和研讨会上各国教授的介绍中提炼了非开挖工程方面的发展近况,从管道探测、检测、修复和新材料四个方面入手,简单扼要地阐述了非开挖工程的最新进展．希望对国内非开挖工程领域的研究有所帮助。     

长距离曲线顶管技术在电力管道工程中的应用

非开挖技术在市政管道铺设中的应用越来越广泛,从直径50mm通讯光缆-直径3000mm混凝土管道,采用非开挖安装各种管道都变得很普遍。同时,鉴于非开挖技术综合效益优越性、环境友好型施工特点,也逐渐被工程建设方、社会所接受和认可。泥水平衡顶管技术是非开挖最为成熟的技术之一,在城市市政设施建设中也起着举足轻重的作用。采用泥水平衡顶管技术进行城市雨污分流改造已经在国内大量城市取得应用,但是,采用泥水平衡顶管在岩层中铺设直径达2000mm埋深在5m电力管道,在国内为数不多,在福建厦门地区也是尚属首次。通过在工程施工中对设备、施工工艺的摸索和改进,最后采用泥水平衡顶管施工技术成功铺设建设方所要求的电力管道。本工程将为在福建地区采用预管技术铺设大口径长距离、曲线管道提供了指导和借鉴。     

沁水盆地煤层气提高钻井效率的技术措施

沁水盆地煤层气项目是全国已探明的大型整装煤层气田。由于煤层气低产出的特点,决定了煤层气施工将要围绕低成本、高效率运作方式进行钻井施工作业。对沁水盆地煤层气钻井的影响因素进行了分析,并结合工程实例论述了如何利用直螺杆与PDC钻头的复合钻进,钻铤与扶正器复合稳斜钻进等技术创新措施及煤层钻进时井内不垮塌和井斜不增加等技术手段,解决如何提高煤层气施工的钻井效率等问题,为今后在该地区的煤层气钻井施工提供有效的借鉴作用。