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The main factors affecting the soil-structure interface behaviors were found experimentally and theoretically, including: 1 the thickness of the interface that is five to six times the average grain size of the soil; 2 the aeolotropy of interface, which is responsible for anisotropic response of the stress-strain response of the interface; 3 two physical states, including crashing and compression of the soil near the structure surface, which govern the stress-strain response of the interface strongly; 4 two shear deformation components due to sliding and constraint of the structure surface relative to the soil respectively, which forms the deformation of the interface; 5 the volumetric strain due to dilatancy, which is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. 4. A unified constitutive model of the interface, based on new elasto-plasticity damage theory, was developed. It was confirmed to be effective for the conditions considering monotonic and cyclic shearing, coupling effect of shear and volumetric strains, evolution of physical state, micro-structure aeolotropy of the soil and the resulting aeolotropy of the interface as well as the three normal boundary conditions stated above. 5. 2D and 3D finite element formulations of the present model were derived and incorporated into the FEM codes. They were applied to the evaluation of practical engineering problems with different typical interfaces between soil and structure. The new model was shown to be reasonable and effective.

确定了粗粒土与结构接触面厚度约为5~6倍的平均粒径,首次揭示了接触面的细观结构异向性以及由此所引起的宏观剪切异向性,发现了在单调和往返剪切荷载作用下土颗粒破碎和剪切压密两种物态变化机制共同支配着接触面力学性质的变化,通过细观分析证实了接触面的变形可分解为一般同时发生的土与结构交界面上的滑移变形以及结构面位移约束范围之内土体本身的剪切变形两部分,观测到接触面受剪时表现出明显的相对法向位移,并可分解为可逆性和不可逆性两个分量;(4)建立了第一个能够统一地描述单调与往返剪切特性、剪应变与体应变耦合特性、细观结构和宏观剪切异向性以及土颗粒破碎等物态变化特性的土与结构接触面弹塑性损伤本构数学模型,并采用多种法向边界条件复杂加载路径的试验成果验证了新模型的合理性和有效性;(5)提出了新模型的二、三维有限元格式并结合实际边值问题进行了应用计算分析,比较了不同接触面本构模型对计算结果的影响,证实了新模型及其有限元格式不仅能够合理地描述土与结构接触面的主要力学特性,还能够较好地反映土体与结构物在接触面处的滑移、脱开等不连续现象。

It is very difficult to eliminate these influence factors completely by conventional treatment. Surface properties and surface treatment of ultrafine red phosphorus and MMT and their interface properties with polymer matrices were studied in this thesis. The results were characterized by GC, FTIR, XRD, DTA, TG, XPS, UV, SEM, TEM and other physical and chemical methods. The main contents are as following: 1. The study of factors influencing ultrafine red phosphorus's invariability and phosphine liberation indicated red phosphorus undergone oxidation and dismutation reaction in air, and trace ion of iron, copper and nickel fastened water absorption and oxidation, in which the effect of copper ion was the most, while aluminium and zinc ion could slow down red phosphorus'oxidation, and silver ion had the best effect on red phosphorus moisture absorption. Inhibitors such as aluminium hydroxide, magnesium hydroxide, organic phenol and ferrous potassuim cyanide had a good effect on reducing red phosphorus moisture absorption and restraining phosphine liberation.

本文围绕纳微米材料的表面处理及其在高聚物基体中的应用这一主题,系统地研究了超细红磷和蒙脱土两种常见材料的表面特性、表面处理方法及其与高聚物基体的界面特性,通过气相色谱、红外光谱、X射线衍射、差热、热重、X射线光电子能谱仪、紫外光谱、扫描电镜、透射电镜等现代分析仪器以及其它物理、化学方法对实验结果进行了表征和分析,全文主要内容如下: 1、对影响超细红磷安定性的因素以及磷化氢的缓释研究表明:红磷在空气中发生缓慢氧化、歧化反应,微量的铜、铁、镍等金属离子增加了它的吸水和氧化速度,其中铜离子的作用最为明显,而铝、锌等离子减慢了红磷的氧化速度,银离子对减少红磷的吸湿性效果最好。

Theobserved strain is 10~2 times as local point strain at the same observed stress.This indicates that macroscopical symmetrical rock is quasi-brittle materialwith microcosmic heterogeneousness and its macroscopical mechanicalbehavior is the results of reciprocity and magnification between microcosmiccharacteristic, not simple sum.(4) The degree of irregularity of strain increases with the number of cycle.But degree of irregularity of transverse strain fluctuates larger at the samecycle. Moreover degree of irregularity of transverse strain is larger than that ofaxial strain. This shows that deformation and failure of rock is process ofevolvement of small crack. Small crack evolves from even and out-of-orderstatus to heterogeneous and ordinal status.(5) Ultrasonic speed decreases with the number of cycle. The decreasecourse is such: Firstly, ultrasonic speed fluctuates in a steady scope in somecycles; And then ultrasonic speed quickly decreases to a certain more smallvalue; Afterwards in succedent cycles, ultrasonic speed fluctuates about thevalue. That is to say, ultrasonic speed fluctuates and decreases at intervals ofcycles. In deformation process of rock, quantitative change and qualitativechange of its small crack evolvement carry through crosswise.(6) Strength and modulus of rock decrease with exponential function asscale of specimens increases.

同一表观应力下,局部点应变与表观应变相差可达2个数量级,表明宏观上均匀的岩石是具有细观特征的准脆性材料,其宏观力学行为是细观特征相互作用、放大的综合结果,而不是简单的叠加;(4)岩样轴向应变不均匀程度和横向应变不均匀程度随循环次数的增加渐进增大,但是在同一个循环内,横向应变离散系数随应力的变化波动较大,且同一循环级别下,横向应变不均匀程度大于轴向应变不均匀程度,表明岩石内部微裂纹的演化是岩石变形破坏的本质特征,这一演化表现为微裂纹从均匀无序分布逐渐向非均匀有序发展;(5)随循环次数的增加,所有岩样内部超声波速会出现衰减,衰减过程表现为在某几次循环内超声波速在某一相对范围内波动,然后急剧减小到某一较小值,在随后的循环内,超声波速又会保持在这一较小值附近波动,即超声波速表现为波动和急剧减小间隔形式衰减,表明从宏观看来平稳的岩石变形过程,内部结构演化过程(微裂纹发展及其相互作用)却表现为均匀量变和突发质变不断交叉进行的现象;(6)岩石强度和弹性模量随尺度增大呈指数函数规律减小。

The deep water deposition means the deposition in the area where the water depth is larger than 30 meters, in which the major sediments are coarse sand and gravel. This kind of deposition is the relic deposition formed by the Pleistocene alluvial-lacustine deposition reworked under modern channel currents actions, and ususally the Holocene acummulation lack in the deep waters. The transitional zone deposition is the deposition between the low tidal level line and the 30 meters isobath, where the sediment types is changeable and the grain sizes are gradually coarsening from the low tidal line to the deep water area. This kind of deposition is developed by the deep water eroded sediments sorting under the transitional zone current action. The different types distributed along the isobath. The tidal flat deposition is the fine sediment deposition on the tidal flat which is flo sedimentation of the silty clay under the tidal flat dynamic action and ususally developed fluid mud on the lower tidal flat. The channel mouth deposition is the deposition in the channel mouth area. According to the sediment types, it includes sand deposition where there are coarse sediments supply and silt deposition where there are only fine sediments surpport.

峡道深水区沉积是指水深大于30米的峡道底部沉积,它以粗颗粒砂砾石沉积为特色,是现代峡道水动力对第四纪海退时发育的冲洪积和坡积物进行改造形成的蚀余沉积,全新世沉积地层往往缺失;峡道过渡带沉积是指水深介于低潮位线至30米水深线之间发育的峡道边坡沉积,该带沉积以沉积物类型多样为特色,自低潮位线至30米水深线,沉积物粒级逐渐变粗,由粉砂质粘土逐渐递变为中粗砂,是峡道深水区沉积物经多次分选沉积而发育的,基本平行于等深线分布的条带状沉积,在岸坡较陡岸段,过渡带下部可发育重力沉积;峡道潮滩沉积是指在低潮线与海岸线之间发育的细颗粒沉积,它是粘性细颗粒泥沙在潮滩动力作用下,发生动水絮凝沉积而形成的粉砂质粘土沉积,在低潮滩可发育浮泥;峡道口门区沉积则是在峡道汇入大海或海湾时,在峡道出口水流影响所及范围的沉积,根据峡道口门区供给泥沙的特性,峡道口门区沉积有粉砂质淤泥沉积和砂质沉积两种类型。

A very clear memorie as a small girl, seeing on a walk troughthe park in my head some 3D picture of twisted wires, hair or woolgetting thin and getting thik again, getting big and getting small.this picture was accompagnied with feeling sick in a strange way inever would forget, it took just a few seconds technical abilitieswere i suppose not enough refind for 3D, this problem ten yearsafter did not anymore exist and 3d pictures apear in colourrealistic live experiences, dreams even while awake.

作为一个小女孩的非常清楚的记忆,我看到在我的脑海里,有些扭曲的像电线、羊毛或头发的三维图像变的越来越细,又变的愈来愈粗,变的越来越大,又变的越来越小。这幅画卷伴随着恶心的感觉,以一种我无法忘记的奇怪的方式。短短几秒钟的技术,我猜测还不足以让我细加区分三维,这个问题10年后不再存在,并且3D画面出现在彩色的现实生活的经历中,甚至在你醒来时依然在做梦。

In the case of granite, observation results indicate that the extending routes of active cracks are mainly intercrystalline, transcrystalline, inter-transcrystalline, and intracrystalline. When the strain rate is low, the long intercrystalline cracks are prevailing, and with increasing of the strain rate, the short transcrystalline and intracrystalline cracks gradually increase. The statistic results show that the active crack density increases with increasing of the strain rate, and the mean length of active cracks diminishes with increasing of the strain rate, that is, the induced damage in comminuted product increases with increasing of the strain rate. For the first time this dissertation integrates macroscopic results of comminution with active crack growth under impact loading. It elucidates why the dynamic comminution strength of mineral beds increases with increasing of the strain rate through the active crack extending, and analyzes the influence of structure and constitution of minerals on their damage under impact stress. It is authenticated that both the size distribution and the damage population of comminuted product can be characterized by the fractal.

为分析料层颗粒在冲击下的细观损伤效果,采用德国生产的ASM68K半自动图象分析仪对粉碎生成物中的损伤情形进行了观测,以花岗岩为例,观测结果表明花岗岩颗粒在冲击应力下的活化裂纹扩展路径主要表现为沿晶、穿晶、沿穿晶和晶内等形式,在低应变速率下,活化裂纹以沿晶裂纹较多,随着应变速率的提高,其它裂纹形式大量繁衍,统计结果表明活化裂纹密度随着应变速率的增大而增大,活化裂纹的平均长度随着应变速率的增大而减小,综合表现为颗粒的细观损伤程度随着应变速率的增大而增大;首次将应力作用下的活化裂纹演化特征与粉碎的宏观效果相联系,并就料层动态粉碎强度随应变速率增大而提高的现象从裂纹演化特征的角度进行了解释;分析了矿岩构造结构特性对损伤产生和分布的影响。

The company specialized production enrichment plant, provides the technical process, the dressing experiment, the installment instructs 13697077005www.lzkysb.cn gentle yu 0797-5745599Jiangxi shicheng county oasis mine selecting equipment plant is a machinery and industrial company, and is approved for registration by the relevant departments of enterprises. The company can provide the user with project design, process design, uniform and non-uniform design and production for the products. Main products of our company are crusher series, sand maker series, mine-selecting series and laboratory series: shaking table, jigger, spiral chute, flotation machine, spiral classifier, ball mill, mixing tank, feeding machine, feeder, vibrating screen, crusher, sand pump, magnetic separator, hydraulic grader, hydraulic cyclone, playing sand machine, laboratory sand pump, laboratory shaker, laboratory spiral chute, laboratory flotation machine, laboratory ball mill, laboratory crusher, laboratory magnetic separator, laboratory mixing barrels, grinding machines, vacuum filter, etc., and the other can be customized according to customer's requirements of various types of mineral dressing machinery and equipment.

公司专业生产选矿设备,提供工艺流程,选矿实验,安装指导13697077005www.lzkysb.cn温良禹0797-5745599溜槽,螺旋溜槽,玻璃钢螺旋溜槽,玻璃钢溜槽,选矿溜槽,选矿螺旋溜槽,萤石浮选设备,旋转螺旋溜槽,玻璃钢旋转螺旋溜槽,旋转溜槽,江西螺旋溜槽,江西溜槽,石城螺旋溜槽,石城溜槽, BLL溜槽, BLL型玻璃钢螺旋溜槽, 5LL螺旋溜槽,公司生产的螺旋溜槽,玻璃钢螺旋溜槽,玻璃钢旋转溜槽,玻璃钢旋转螺旋溜槽有BL,LL,CBX等系列BL的特点是新型复合断面,超短螺距,大直径,宽断面,特别适于原矿的拖泥及非金属,金属矿物细粒级(-0.2毫米)的分选,不需冲水,具有结构简单,无需动力,重量轻,占地面积小,处理量大,分选效率高,LL的用于选别粒度0.3-0.02毫米的铁锡,钨,钽,铌,煤矿,金矿,独居石,金红石,锆英石及具有足够比重差的其它矿物CBX对于选别钽,铌,锡,钨,金,钛,铁和其它比重差大于1的矿物锯齿波跳汰机,隔膜跳汰机,旁动式跳汰机,侧动式跳汰机,下动式跳汰机,双室隔膜跳汰机,选矿跳汰机,动筛跳汰机,锯齿波大颗粒跳汰机,JT跳汰机,选金跳汰机,选金机,选锡跳汰机,重选跳汰机,公司生产的跳汰机,单斗跳汰机,隔膜跳汰机,双斗跳汰机,锯齿波矩形跳汰机,锯齿波梯形跳汰机,左式和右式跳汰机有JT,LTS等各种系列,该机是固定筛子式,适用于选别金属矿石,如钨,含金的砂矿,精选锡矿等,也可用于选细粒物料和粗粒物料,最大给矿粒度为30毫米。

A series combined test method tests were performed to determine the liquid-plastic limits of different samples of fine grained soil and silty sand. The result showed that the loglog relationship between the depth of penetration of fall cone and the water content of some samples were clearly not linear, and the liquid-plastic limit could not be obtained according to the linear relation. Effective test data could not be measured within the three arranges of water contents proposed by the present standards. The dependability was necessary to discuss about the liquid-plastic limit test results obtained from three arranges.

采用液、塑限联合测定法针对部分细粒土和粉砂进行液、塑限测定时,发现对于部分细粒土在双对数坐标上圆锥下沉深度与含水率之间的关系并非线性关系,无法依据线性关系确定液、塑限:采用规程建议的三个含水率范围有时根本无法获得有效试验数据;采用规程建议的三个含水率范围确定得到土的液、塑限试验结果的可靠性有待商榷;采用直线段试验数据确定的液、塑限进行分类可能出现相互矛盾甚至错误的结果。

However,it is the dissipa-tive mechanism,i.e.the mechanism of energy localization that attracts one′sattention for the problem of shock initiation.Since the test result of shock initia-tion about fine-grain explosive charge does not support hot spot ignition model,the author of this dissertation advances that the mechanism of energy localiza-tion is coincident with phonon-fracton crossover of fractal network for ultra-fine-grained charge and,moreover,analyzes the relation between shock sensi-tivity and porosity,which is consistent with shock Hugoniot curve for porousmaterials.

由于超细颗粒压装炸药的冲击起爆实验不支持热点点火模型,为此、本文提出对于单晶颗粒半径为微米以下量级的药床,冲击起爆的能量局域化机制与分形网络中弱局域化声子向强局域化分形子的渡越对应,并且根据这一机制分析了超细颗粒药床的冲击感度和孔隙度的关系,结果与多孔物质冲击压缩的P-V图吻合。

However, it is very difficult for BaTiO_3-based dielectrics to satisfy the R characteristic (ΔC/C=± 15% or less) when the temperature is higher than 130℃, since the Curie point of pure BaTiO_3 is about 125℃.

另一方面,采用亚微米级的超细原料已成为大容量MLCC的工艺基础,而亚微米级的超细原料的使用又对改性掺杂剂的粒径、纯度及掺杂的均匀性提出了更高的要求。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。