砂卵石,sandy gravel
1)sandy gravel砂卵石
1.Foubdation treatment of changing and filling withsandy gravel large area;大面积砂卵石换填处理地基
2.Fractional structure of granularity distribution of natural sedimentarysandy gravel;天然沉积砂卵石粒度分布的分形结构研究
3.On the basis of analyzing the geological feature ofsandy gravel,we research the problems of lacking fidelity on prospecting,non-defining properly the pile capacity on design and non-constructing according to standards on construction,use the major-diameter manual piles in this kind of layer and point out the measures we should use in prospecting,design and construction.在对砂卵石地层地质特点分析基础上,研究了此种地层中应用大直径人工挖孔桩时易出现的勘察失真、设计上未正确确定桩端阻力、施工中不按规范施工等问题,指出了应从勘察、设计、施工上采取的相应措施。
英文短句/例句
1.The Research for the Applied of the Grit and Pebble Acting as the Fill-stuff of High Embankment;高土石坝砂卵石作坝壳堆石料应用研究
2.Testing Study on Dynamic Properties of Sand Pebble Soil in Sichuan;四川地区砂卵石土动力特性试验研究
3.Numerical Analysis Study on the Soil-nailed Supporting System of Foundation Pit Excavation in the Sand-cobble Deposit;砂卵石基坑喷锚网支护数值模拟研究
4.Research and Application of Pebble Foundation Site Roller Compaction Testing砂卵石地基现场碾压试验研究与应用
5.Construction supervision of the vibroflotation method of filling gravel under water谈砂卵石水下填筑中振冲施工的监理
6.Application of sand and gravel cushion reinforced composites in the projects加筋复合砂卵石垫层在工程中的应用
7.Selection of shield cutterhead and tool for Chengdu sand-pebble layer成都砂卵石地层盾构刀盘与刀具选择
8.Design of a Shield Driving in Water-saturated Cobble and Sand Stratum with High Content of Large-grain Cobbles卵石含量高、粒径大的富水砂卵石地层中盾构机选型研究
9.Through laboratory tests on sandy pebble soil by using the dynamic triaxial test, researches of saturated sandy pebble soil have been done.通过对砂卵石土室内动三轴试验，对饱和砂卵石土的动力特性进行了较为深入地研究。
10.Application of Shield Method in Non - Water Sandy Cobble Bed盾构法施工技术在无水砂卵石地层中的应用
11.Research on EPB Machine Applicable for Excavating in Gravel with Sand适用于砂卵石地层的土压平衡盾构研究
12.Fractal Structurel of Granularity Distribution of Natural Sedimentary Sandy Gravel论天然沉积砂卵石粒度分布的分形结构
13.Study on the Dam Foundation Guards Against Infiltrates of the High-pressure Spray Grouting;水库坝基砂卵石层高压喷射灌浆防渗技术研究
14.The Study of Homemade Shield Cutting Tools for the Shield Construction on a Layer of Gravel and Scree;砂卵石层盾构刀具损坏原因分析及国产化技术
15.Research on Dynamic Balance Mechanism of the Excavation Face with Earth Pressure Shield in Sandy Cobble Ground砂卵石地层土压盾构开挖面动态平衡机理研究
16.TEST AND RESEARCH ON PORE-FORMING TECHNIQUES ON DUCTULE LARGE PARTICLE SANDY COBBLE STRATUM大粒径砂卵石地层小导管成孔技术试验研究
17.PREDICTION AND CONTROL ON GROUND SURFACE SETTLEMENT DURING SHIELD CONSTRUCTION ON SANDY COBBLE STRATUM砂卵石地层盾构施工地表沉降预测与控制
18.Construction Measures of the Shield through Shallow Covering Section under Sandy Gravel Formation砂卵石地层下盾构过浅覆土路段施工技术
相关短句/例句
sandy pebble砂卵石
1.The application of thesandy pebble fillings in highway roadbed;砂卵石填料在公路路基中的应用
2.Analysis was made onsandy pebble replacing foundation in the character of vibrating compression,bearing capacity ofsandy pebble ground and its function.从粗粒土振动压实特性、砂卵石地基承载力特征及作用三方面对砂卵石换填地基进行了分析总结,通过工程实例证明人工换填的砂卵石地基承载力较高,沉降量小且均匀,能够满足高层建筑基础设计要求,适宜在洛(阳)南新区高层建筑地基处理中推广。
3)grit and pebble material砂卵石
1.All in all, thegrit and pebble material is a .结合正在施工的,采用砂卵石作坝壳料某水电站这一项目,通过系统的土工试验,对该砂卵石填筑料的级配、压实、渗透和强度等物理力学性质进行了研究;并通过理论分析和工程类比,对砂卵石作坝壳堆石料时的工程特性作出了评价。
4)sand and cobble砂卵石
1.Application of filling and building withsand and cobble in the dock project;砂卵石填筑在码头工程中的应用
5)sand gravel砂卵石
1.At the edge of mountain or river alluvial, accumulate or sediment many thick or huge thicksand gravels.在山区和河流边缘、岸坡、阶地上冲积、堆积或沉积有大片厚层或巨厚层的砂卵石层。
6)sandy pebble soil砂卵石土
1.Influence of confined pressure and consolidation stress ration on the dynamic characteristics ofsandy pebble soil;围压和固结应力比对砂卵石土动力特性的影响
2.Dynamic triaxial tests and analysis ofsandy pebble soil in Sichuan;四川地区砂卵石土动强度试验分析
3.Laboratory experimental study on dynamic elastic modulus ofsandy pebble soil subjected to dynamic loading;砂卵石土在动荷载作用下的动弹性模量研究
延伸阅读
油井防砂和清砂对疏松油层进行层内胶固，在井筒内下筛管防止油层砂进入井内，以保证油井、注水井的正常生产，称防砂。防砂胶结疏松的砂岩颗粒随油、水进入井筒或携带至地面，会冲蚀、磨损、堵塞深井泵和管线以及地面设备,或沉积于井底,堵塞油层，使油井减产或停产；甚至油层坍塌，挤毁套管，导致油井大修或报废。采油时应根据生产动态、砂样分析及声波测井等资料，及时了解出砂原因、层位及性质，采取有效的防砂措施。防砂措施有筛管滤网和化学胶固两类，前者适用于各种完井方式，应用较广，后者主要用在套管射孔完成的井。通过试油、试采已证实出砂的油层，应考虑防砂完井。筛管滤网防砂也称机械防砂，将多缝筛管固定在带孔的钢管上，下至出砂层段并用携砂液将一定粒径的砂粒循环填充于筛管外，靠管外砂粒所形成的桥拱，滤阻油层出砂。对油层单一、无水、气夹层的井，可采用先期防砂。即油层部分用扩眼钻头扩眼后，再下入筛管填砂（见图）。对多层合采或有水、气夹层的井，用射孔完井。清洗套管和炮眼后，再在套管内下筛管填砂。筛管的结构，从割缝到外包金属网或预填砾石，发展到用有机或无机材料预制滤管。目前多用梯形截面的不锈钢丝点焊成强度高、渗滤面大、耐腐蚀的金属绕丝滤管。此法要求根据砂样粒度分析资料，选定筛管缝宽及填入砂粒的直径。化学防砂向出砂油层注入一定量的化学胶结剂，将油层砂子胶固在一起。常用的胶结剂有树脂类（如酚醛树脂、环氧树脂等），有时也用水泥类材料。要求胶结剂在固结时体积收缩，或加入增孔剂，造成一定的渗透性，以尽量减少对产量的影响。对已经大量出砂的油层，用下列方法形成有渗透性的人工井壁：①将砂与胶结剂按比例混合后,挤入地层；②预先向出砂层填砂,再将原料如甲醛和苯酚以及固化剂按序挤入地层，在地层条件下合成树脂；③石英砂外包一层树脂，在未完全固化前挤入地层，在油层温度条件下固化；④用N2作载体把SiCl4蒸气引入油层，使之分解,析出的Si对疏松砂子起胶结作用。化学防砂的优点是可用于同井多油层防砂，不缩小井眼；缺点是成本较高，易降低出砂层的生产能力，对于油井先期防砂或注水井防砂，效果较好。清砂清除井底沉砂，一般下入油管，用洗井液循环冲洗，带出地面。炮眼内积砂，用专门的洗井封隔器分段冲洗。井下深井泵等设备内的积砂，须将设备起出地面，检查清理。参考书目T. O. Allen & A.P.Roberts, Production Opera- tions,Vol.2,2nd ed.,Oil & Gas Consultants Inter-national,Tulsa,1982.
