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O卜改‘N。O的。国。昌 卜仍。1 .8们。10卜。叫。署 幻6的.d‘的。的11。d日Z 11。9们OT。国f名 8!卜‘工卜。石>。国。叫 仍嘟9‘0 .601。口﹃国。工ln国 。N!工。Z卜。澎。叫 O仍01‘卜99。d。O的。国。国 卜旬61‘CO仍。一。笋。叫。属 的卜臼.d二卜.一。卜.国.叫 6哪哪。d‘S。哪N。国。O 哪的闪工。d‘工卜。一。>。署叫 8。二昌。98。闰卜么 闪工|祠工卜工卜。一。卜.国.碱 L86工‘8的.10卜。叫。澎 9861‘的的凶.d‘O的.澎.昌 9匀61‘卜仍。一。卜。司国 卜801‘的的.一。卜.司.澎 20。d .8曰J大.澎 9!的‘工卜。国。阅 凶… 相似文献
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尸、们+J6O。闪!卜.叫汾狡冲)经片军岔彩蛤 1。以.国目国‘日月 JO曰民昌国口以口O闰招国 目关。9卜d。国目卜。招。d内。山。目口关国工一︵一qN么﹀‘E涅“么|︵ 之尽扣似 d叹名|渭国留。。,侧卜闰。11 乞︵盼绷田︶酬髦职招目留。国‘x川以‘9︶侧昌留。泪目d。目目国川 乞棍砚肠留世 一丫目之|侧目留口目R刀月汉汽出 鑫荟寒李祝宜 丫吃么|倡国留。J月国﹄璐护留碱 骊祝获牟荡枷宜 ︸口!o国。山。。o留。目。以。钊口川 翻卜喊且瓣 ︸口!10匕。国。。o国口国卜d。山︸。口。国关汉口 瑞任吸宜姗 ︸︸口10留。口。。o口n汉。。。国?。… 相似文献
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《中国地质》1956,(6)
且。储虽的接取保数(K。。中巾H二。e”,。3。。。、e。。,3acan。。〕在柔衬尔蔗庆卜或耸牛付献1一鱿肠 上,攫得酌磺蓉数查卜与最彻确1旦.揖失保数(Ko。中巾H二。eHTnoTep、)在果社的阔床上或其果社白乍山部分上,定的信矜量的比。碾要主具失数量与原来确育化(pa3y6o、。sa。,e)在疆蓬果掘社程中,其有用翻份的含量比它们在该体七的含量有了减少。贫化保数(Ko3中巾、二、eHT pa3y6。、。Ba。。,)摘藩食化时,有用栩份含量减小的数植与在渡体中有用粗份含量的比例。系竖上(BoKp。。a〕作为抿露工作之对蒙的岩石。剁土保数(Ko。中巾H:。e… 相似文献
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景宁县地处浙南山区。全县国土面积1949．98平方公里。其中山区面积占全县总面积的84．48％。山高坡陡,残坡积物多。地形、地貌、地质条件复杂。属亚热带季风气候区。降雨量充沛。是浙江省南部的一个暴雨中心。是全省地质灾害多发县之一。现已发现需防治的灾害隐患点122个。涉及全县23个乡镇。威胁7431人的生命财产安全。其中“A”类隐患点为4个,“B”类隐患点10个, 相似文献
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—— ig 石 IArgutitel Ge Q。IA.M.69.3—4岩石矿物及测试 第4卷一 续表8————4 _。,。。、_In。_。_I,_、。;。。Ipt、、;。k。c.I*b.二h.S.幻2续表 旷物名称【英 文 名 称【化 学 成 分 式]参 写 贡 献 yMiat矾 ISturlnajotel Ca。(Fef+。AI。。Mn!+、),(SO。)。。[J3(OH)。3’。IC.M.ZI.705 11(OH)12.25HIOI 田 RB h11山e D *出口。D*b.劝.5.90 水硅结钠石【丁erskit,D Na在rsi6CI。·ZH。O【Zap.112.226 tPZM61 1’。lbachite Cu CI。 A.M.69 3*4 eKMpe铀矿 I”Lhstramite Ca(UO”.Fen+)[POO.Soo.CO。… 相似文献
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本文拟通过长江口沉积物粒度特征的研究。用以阐明在一定动力条件下沉积物的分布规律。文章主要分两大部分。第一部分阐述沉积物的分布特征。第二部分是河口动力沉积分区。沉积物的纵向分布特征。沿着物质搬运方向,存在着粒度沿程减小的趋势。沉积物的中值粒径,向着下游方向逐渐变细,分选性则由好变差。自江阴以下至口门附近,细砂粒级的含量逐渐减少。而粉砂粒级含量逐渐加。进入口外海滨区,则粘土粒级的含量明显增多。在横向分布上。沉积物的颗粒大小与一定的水动力条件相适应。一般在河槽主泓因水深流急。物质较粗。而两侧滩地。水浅流缓,物质偏细。在个别地段,出现了一些特殊情况,如在河 相似文献
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《地球科学》1987,(6)
A,1.L。。bh 人.N。拉姆宾(I):O3 口。。nK。n纠bn关康年(非:]37Da。Z卜n叮u 鲍征宇(打;加4 C。。0 DaJ。。郭宝罗(门。川Bi Xia,lin。i 牛介们(门;gO);518 Nan weitian 韩蔚田(4);349Cat Mqin 蔡克勤(4);349 Han Yuging 韩郁行(5)。451Cao X5ngnan M兴男(o:n1 nac Ya 郝 雅(一。32(CenBoxiong 岑博雄 一);157 Hejingyu 何镜宇(3);301Chen Beiyue 陈dEft(l):57 IItt Chang。lug 胡昌铭(l):1Clle。D。xing 陈德}1:(6):599II;;D。xia。g 胡德详(4):348(5);477Cll,n Hualltlf 陈华悲(Q。129 un ha扛e 胡家杰(5):551Chen Linzn… 相似文献
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我已至耄耋之年。但是。几十几前军旅生涯的一幕一幕。总时不时浮现在我脑海中。让我感叹不已。我感叹着当时自己的激情澎湃。感叹着生死离别的战友情深。感叹着亲密无问的军民鱼水情。感叹着国家领导人对战士们的亲切关怀。感叹着文化大革命对革命意志的特殊考验……在儿女们的建议下，我开始回忆。并把它们记录下来。用我的亲身经历来诠释我对新中国、对中国共产党的理解。我想。就从解放战争的那一幕说起吧—— 相似文献
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THE LITHIC INDUSTRY OF THE SINANTHROPUS DEPOSITS IN CHOUKOUTIEN 总被引：1，自引：0，他引：1
CON了ENTS了NTRODUCTIONTHE CULTURAL LAYERS IN CHGUKOUTIENAD几SCRIPTION OF THE LITHIC INDUSTRY FROMZONEC 1。Fla缺d boulders 人.Squared成ocks B.Truncated boulde阳 C。Cl飞oPpe均 (a)Crude ehoPPers (b)ChoPPe胎with aP比Pa比db。。! (e)ChoPP。招with昌possibly PrePared edge !1 .Qu蕊rt:eores A。piseoidal亡ores B。Conical co拍, 111。SeraPe了s A.孙near,。r合Pers B。Coneave四eraPers C。Convex seraPe均 D。ComPlex seraPers E。Pointed im川emen份 F.ChipPed Or n… 相似文献
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Li Genxiao Wang Chang Wang Gang Xiao Zhiyong Wu Xianlong Jiang Feng 《Geotechnical and Geological Engineering》2021,39(2):1365-1380
The influence of the sealing degree of the lining structure and the permeability of surrounding rock on the stability of the tunnel has always been the main topic concerned by the relevant engineering researchers. Based on the research background of the tunnel project of Qingdao metro line 1 and the in-depth analysis of the existing research results, this paper makes a systematic analysis and research on the influence mechanism of the sealing degree of the lining structure and the permeability of surrounding rock on the stability of the tunnel by the numerical simulation. The results show that the safety coefficient of each part of lining structure decreases with the increasing degree of tunnel sealing, which is manifested by the increase of the settlement of the vault and the convergence of the arch foot. In addition, the stability of surrounding rock becomes worse with the increase of permeability coefficient of surrounding rock, which means the higher pore pressure and larger displacement of rock around the chamber. At the same time, the influence of the sealing degree of the lining structure on the stability of the tunnel will increase with the permeability of the surrounding rock. The works in this paper have guiding significance for the construction of submarine tunnel under different characteristics of surrounding rock and the selection of sealing degree of lining structure.
相似文献12.
G.N. Fomin 《Geoforum》1976,7(4):259-269
The paper describes the current stage of transformation of the residential distribution system in the USSR, the state policy in the field of urban development, the tasks facing Soviet architects and the way to their solution. The state policy in the field of residential distribution and urban development provides for: the systematic and scientifically substantiated distribution of production and human settlements on the basis of coordinated development and distribution of productive forces and the perfecting of the systems of residential distribution; the utilization, improvement and protection of landscape; the restriction of the growth of very large cities and development of the network of small and medium towns; the transformation of villages into modern well-organized settlements of the collective and state farms and the elimination of the existing distinctions between town and country; the regular development and distribution of towns and settlements in different geographical zones and most favourable natural-and-economic regions of the USSR; the overcoming of irregular population distribution in the European and Asiatic parts of the USSR; the formation of group-systems of human settlements on the basis of big urban agglomerations and territorial-industrial complexes; the development of new territories through land improvement. Basic attention in the report is paid to the consideration of the master scheme of residential distribution in the USSR, its scientific fundamentals, main purposes and tasks. The analysis of the decisive factors and of the main trends of the development of the systems of human settlements for a long-term perspective is given. The master scheme of residential distribution contemplates the systematic development on the USSR territory of different human settlements contributing, to a maximum degree, to the achievement of the objectives of socialist construction, to the creation of most favourable conditions for the people's work, life and rest, to the development and intensification of social production taking into account objective tendencies of urbanization and the effective use of forecasted urban development resources. The realization of the master scheme of residential distribution will allow to fully take into account the economic, ecological and demographic requirements in the elaboration and realization of the plans of development of production and residential distribution aimed at the rise of the living standard of the Soviet people. 相似文献
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采用实测资料分析和理论探讨的方法,研究了黄河口海岸造陆与水沙过程变异的关系.研究结果表明:黄河口陆域来水来沙是海岸造陆的基础,来水来沙越大,造陆面积越大,水沙过程变异后,由于水沙的急剧减少,黄河口海岸造陆速度减缓,典型岸段严重蚀退造陆面积也大幅减小;尾闾河道萎缩对海岸造陆影响较大,萎缩越严重,越不利于海岸的造陆发育.运用多元回归分析建立了黄河口海岸造陆水沙临界综合关系式,可供科学调控来水来沙实施黄河口海岸防护过程中参考. 相似文献
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《International Geology Review》2012,54(10):1142-1152
On the basis of a study of a large quantity of deep-seated xenoliths from the kimberlites of the Malo-Botuobuya, Daldyn-Alakit, Upper Muna, and Lower Olenek regions of Yakutia, we have discussed the distribution of the ultrabasic rocks and eclogites in the kimberlite pipes both on the basis of petrographic composition, and also on depth facies, and a comparison is presented of the mineral composition of the deep-seated inclusions and of the amounts of defined types of xenoliths with the diamond capacity of the kimberlites. The conclusion has been reached that: 1. the amounts of inclusions of deep-seated rocks vary significantly not only in kimberlites from the various diamond fields, but also in the pipes of a single diamond-bearing region; 2. the composition of the ultrabasic rocks and eclogites of the diamond-bearing pipes is distinguished from that of the inclusions of the non-diamond kimberlites in these rocks; and 3. the diamond capacity of the kimberlites has been determined by the depth of occurrence of the magmatic focus and the velocity of uprise (intrusion) of the melt during the formation of the kimberlitic diatremes —Authors. 相似文献
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In the period of impounding and running of the Three Gorges Reservoir, the sensitive degrees of change of groundwater table and displacement to the fluctuation of water level are different in different parts of landslides induced by the fluctuation of water level (as the case of Xietan Landslide). According to the relationship between different sensitive degrees of monitoring variables (underground water level and displacement) and quantity of monitoring information, the sensitive zones of groundwater table and displacement to the fluctuation of reservoir water level are divided into different degrees by the approach of fuzzy pattern recognition. The result of numerical subarea of sensitive zone of groundwater table and displacement indicates that the middle and front part of the landslide are the main places with groundwater table affected by the fluctuation of water level of reservoir; the variation of horizontal displacement of surficial part of the middle and front part of the landslide is more sensitive to water impounding and sudden fall of water level; and with the increase of elevation and depth of the landslide, the horizontal displacement changes less and less; the change of vertical displacement of surficial parts of the landslide is most sensitive to the fluctuation of water level of Three Gorges Reservoir; and with the increase of depth, the change of vertical displacement become smaller and smaller. By the means of the numerical subarea regulation of Xietan Landslide, the suggestions to the point layout for monitoring the groundwater table and displacement in the landside of Three Gorges Reservoir are put forward. 相似文献
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针对长春某地下车站深基坑工程,深入研究了基坑开挖过程中近铁路侧通风井段险情的发生过程及其致险机制。通过分析通风井附近桩身水平位移、桩顶水平位移、支撑轴力以及铁路道轨两侧路肩沉降差,探讨了通风井段基坑变形过大的原因;采用ABAQUS有限元软件对该基坑的施工过程进行数值模拟,分析了通风井段基坑施工险情的发生机制。研究结果表明,通风井段基坑变形过大是由岩土体过度应力释放和基坑变形空间效应共同作用导致。由于通风井处阳角的存在,且施工过程中通风井段基坑未架设斜撑,致使该处基坑变形的空间效应显著,坑壁产生指向通风井的扭转变形;开挖速度过快、支撑安装不及时和岩土体中过度应力释放导致围护桩变形过大,使基坑的稳定性变差。 相似文献
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Gurgen P. Tamrasjan 《International Journal of Earth Sciences》1970,59(2):623-636
The paper deals with the distribution of main earthquakes of the world by local solar time counted out from the moment of the lower culmination of the sun, and by local lunar time counted out from the moment of the upper culmination of the moon relative to the meridian of the focus of earthquake. The uniplanetary seismic (and thereby in a definite sense also the modern tectonic) activity is in a close and distinct connection with the conditions of cosmic life of the earth, separate regions of which are in a close reciprocal coordination defining the seismic energy yield now in one, now in another time. The distribution of the strongest earthquakes (the number of them and especially their energies), which depict the basic seismic picture of the earth, is entirely distinctly coordinated by the mechanism of cosmic interactions. And here very strict regularities are revealed. Each main seismic region of the earth corresponds on the map of time to definite and typical zones of intensification of seismic activity and to the zones of sharp attenuation of this activity (seismic depressive zones). The map of time is as if divided by different seismic regions into spheres of influence. The sphere of influence of one region is often almost prohibited for the other one. This firstly relates to the upper structurehypsometric storey of the planet, to the earth's crust and to its underlying mantle, which contributes 4/5 of the whole seismic energy of the planet. The localization of the high seismic activity of the separate regions only at definite, strictly outlined plots of the map of time indicates the strict uniplanetary coordination of the planet's seismic energy yield. 相似文献
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螺旋群桩基础承载性状试验研究 总被引：3，自引：1，他引：2
根据螺旋群桩现场静载试验结果,分析了螺旋群桩基础承载性状的影响因素,讨论了极限荷载下群桩几何参数对螺旋群桩的桩端阻力和桩侧摩阻力的影响。结果表明,螺旋群桩承载性状受到相邻桩的叶片距离以及首层叶片到承台底面间的桩长度影响明显。在叶片桩距比（桩间距比叶片直径）小于2时,螺旋群桩静载试验的荷载-位移曲线呈缓变形,无明显的拐点,群桩破坏属于整体破坏。同时,螺旋桩的叶片有助于减小承台下桩间土变形活动区的高度,增强了桩-土-承台的相互作用,减小了群桩基础沉降量。 相似文献