地下人防通道对周边建筑影响分析方法浅析

为了分析地下人防通道对周边建筑的影响,结合该场地工程地质情况,采用Peck法、Plaxis有限元分析法、ABAQUS有限元分析法三种理论分析方法,综合确定了人防通道沉降影响范围,表明数值计算与现场实际调查结果相符合。研究对分析类似场地条件下地下工程对周边建筑影响具有一定的借鉴意义。     

第一届全国计算岩土力学研讨会

第一届全国计算岩土力学研论会,于1987年11月23—27日在四川峨眉西南交通大学召开。会议由中国力学学会计算力学委员会召集,西南交通大学岩土工程研究所组办。应邀与会代表共百余人,主要来自全国各地有关高等院校和设计研究院(所)等60多个单位和部门。人防系统有两名代表,来自南京工程兵学院和四川省人防工程设计科研所。近代以来,随着电子计算机的广泛应用,在岩土工程中,数值分析受到了人们的极大重     

废弃地下人防洞处理分析

针对废弃人防洞及其对建筑物安全的危害,介绍了压力注浆处理人防洞的原理、方法、工艺、材料、检测方法、处理效果。针对具体实例,介绍了该方法的优点,说明了处理施工的整个过程和工序安排,对今后处理人防洞的实际施工具有一定的借鉴意义。     

电法勘查在寻找人防地道中的应用

文章介绍了几个电法勘查在寻找人防地道的应用实例.实践证明,中间梯度法在寻找人防地道方面是一种行之有效的方法.     

洛阳玻璃厂人防工程涌水原因分析及治理对策

洛阳玻璃厂人防工程属地道型,底面标高128．87—129．30m,所处地层为粉质粘土及粘土,底部埋藏有砂卵石层。洛河水面工程建设前,该地段地下水位高程低于126．8m,人防工程内未出现涌水现象。1999年,洛阳市在洛河建起四级水面工程,增大了地下水的补给能力,抬升了地下水位,使人防工程地段的地下水位上升2．3～2.5m,高出人防工程底面,由于人防工程表面没作专门的防渗处理,便出现了涌水现象。根据水位观测预测,水面工程连续运作9个月后,该地段地下水位将上升3．57以上,人防工程二分之一的部分将被淹没。治理的办法主要有四种：开采降水法,固边堵渗法（分地面、洞内两种）、排堵结合法,以第二种方法较优。     

人民防空地下室工程配电系统设计浅析

人民防空地下室工程的配电设计是建筑电气的一项重要技术,而其中的配电系统又是这一技术的关键。本文结合人防工程相关规范和图集,阐述了人防工程配电中的电源、供电等方面的一般做法与关键点;对人防工程配电中的常用系统,结合规范图集与实际施工图进行了总结。     

浅埋人防隧洞围岩加固处理技术及分析

根据埋深为6～13 m的某浅埋人防隧洞的前期稳定性分析,提出了对该人防隧洞选取灌浆加固处理方法。在工程的具体实施中,进行了两种浆液的配比实验,并分别确定了该人防隧洞在积水段和无积水段的加固材料及其配比。依据工程实际制定了灌浆施工工序,确立了浆液扩散半径以及3套灌浆终止条件。由灌浆扩散半径及岩芯强度测试的工程灌浆效果检验得知,此次加固措施完全达到了预期的效果和目的。     

人防坑道爆破掘进对施工中的电视塔的影响观测与分析

为检查人防工程主干道爆破施工对其上部正在进行主体混凝土浇灌的电视塔工程的影响,我们对人防坑道爆破瞬间的电视塔结构、电视塔附近基岩以及人防坑道底板的振动速度进行了现场测量。本文将电视塔作为一个正在连续浇灌施工的高耸建筑物,其顶部混凝土尚处于初凝期,对破坏判据的选取进行评价与分析。文中对现代城市经常出现的地面建筑物(或地下上层结构物)振动效应控制的分析,可对同类工程提供有意义的参考。     

南宁市新华街人防工程施工技术

介绍了南宁市新华街人防工程采用逆作法设计、施工情况，人防工程先施工钻孔排桩围护结构和中间工程桩柱，采用顶板作为支撑体系，恢复路面后，再一直开挖至基坑底，施工主体结构的施工方法。大大缩短了占用路面的时间，减少了对周边商铺营业的影响。     

复杂地层大口径金刚石钻进直孔施工经验

复杂地层大口径金刚石钻进直孔施工经验华南冶金地质勘查局８１１队万诚忠无锡市政府人防办公室规划用钻孔作为地下人防巷道与外界无线电通讯联系的专用通道。无锡市人防地下巷道指挥中心巷道面积１００００ｍ２，甲方要求钻孔直径１１０ｍｍ，钻入主水平巷道内，并下好直...     

频率测探正演滤波算法及算例

通过对频率测深理论的研究，提出了水平电偶极场视电阻率改进滤波算法，并编制了正演计算的实用程序。理论模型计算表明，改进滤波算法 效果好，计算速度快。     

频率测深波区视电阻率响应和正演计算

本文对频率测深电偶源发射时的波区视电阻率响应进行了较系统的讨论,指出了国内现有理论中的一些错误。研究发现,在进行波区视电阻率响应的理论推导时,当基底电阻率有限时进行零级近似是正确的,但当基底电阻率为无限大时,进行零级近似是不完善的,必须进行修改。利用正确的公式进行了视电阻率响应的正演计算,结果表明,利用零级近似得出的公式与利用一级近似得出的公式计算的视电阻率响应曲线首支部分符合较好,但对于有高阻基底存在的地电断面,响应曲线尾支差异很大。     

James M. Harrison Awards

The James M. Harrison Award for Outstanding Achievement was established by the IUGS Executive Committee in 2004 to honor individuals who have served the Union in an extraordinary fashion for a long period of time, and who have no recognized position as an officer of the Union. The award is named for the late James M. Harrison, an internationally known and universally respected Canadian geologist (Geological Survey of Canada) who was one of the founding fathers of the IUGS and its first President (1961-1964).     

G. Schweinfurth an M. Blanckenhorn

Ohne Zusammenfassung

---

G. Schweinfurth an M. Blanckenhorn

     

In memory of M. A. Rateev

Chronicle

In memory of M. A. Rateev     

Comments on Rebuttal of M. Sagir

This rebuttal was written in response to the rebuttal of the paper “choosing a municipal landfill site by analytic network process” published in 2007 by M. Sagir. This study was conducted as an application for the landfill site selection in the environmental engineering discipline. Since ANP was only the “instrument” used in our study, the details of this existing methodology were referenced, and not presented, due to page limitations and to match the content of the journal. Responses to M. Sagir’s comments are discussed within the body of this rebuttal.     

The 80th Birthday of B.M. Mikhailov

Chronicles

The 80th Birthday of B.M. Mikhailov     

Spectroscopy of Diamonds from the M.V. Lomonosov Deposit

Geology of Ore Deposits - Abstract—Diamond crystals from the M.V. Lomonosov deposit (Archangelsk oblast, Russia) were studied by luminescence and infrared spectroscopy. Three groups of...     

V.M. Shestakov and the development of modern hydrogeodynamic ideas

The scientific and pedagogical career of Professor V.M. Shestakov is analyzed in connection with his developing and forming the modern shape of hydrogeodynamics as an applied field of hydrogeology. This paper discusses Shestakov’s main achievements and publications, which have aided the development of hydrogeodynamics. The areas of the field of hydrogeology, to which Shestakov made a considerable contribution, are enumerated.     

M1 site splitting due to Next Nearest Neighbor effects and ferric iron in tetrahedral site in clinopyroxene megacrysts

It is well known that in pyroxene structure,there are two metal sites,M1 and M2.Generally speaking,Ferrous iron in each of these sites would normally be expected to give rise to a doublet,However,anomalies have been found in the relative areas of the peaks in the room temperature spectra of some clinopyroxene(CPX)when the above assignment is followed.According to the calculation of Next Nearest Neighbor configurations of divalent cations in M1,we found that the four configurations of M1 can be divided into two groups.One group is 3Ca configuration that increases with the content of Ca(p.f.u);the other group is made up of three No-3Ca configurations that decrease with the content of Ca.The two groups contribute to the spectrum structure of M1.so in this study we fit two doublets for ferrous iron in M1.Though there were several reports on Fe^3 in tetrahedral site previously,it was not sure that Fe^3 occupies the T site is a universal fact in CPX,despite of the content of Al.We found that the Fe^3 in the T site fitted by Moessbauer spectroscopy is negatively correlated to the Si content in the T site and positively correlated to the Fe^3 in the T site estimated on the supposition that Fe^3 and Al occupy the T site randomly.If it is true.it is important in the modeling of ion exchange geobarometries and geothermomeries.