In order to acquidity the liquidity index of clay soil,people usually measure its moisture ratios under natural status,liquidity limit and plastic limit,and then calculate the value of liquidity index by known formulas.
对于粘性土液性指数,传统做法是:通过测试天然含水率和液、塑限含水率,然后利用公式计算得到液性指数;本文依据液、塑限联合测定法基本理论,事先建立液性指数和锥沉深度关系曲线,在实际工作中,对符合要求的试样,通过测定锥沉深度,在关系曲线上查得相应的液性指数。
Inquiry on determination of soil standard value of ultimate bearing capacity of end of piles by liquid index in technical code for building pile foundations;
对现行规范以液性指数I_L确定极限端阻力标准值q_(pk)的质疑
Based on linear deformation theory under gravity force,the relationship between liquid index and effective gravity is proposed and analyzed after study of stree～strain relationship of soil under three different states.
以自重应力作用下土的线弹性变形计算理论为基础,对3种不同状态土所涉及的2种变化过程中的应力、应变间关系作比较,推导出液性指数与有效重度间的关系式,并对公式进行分析、说明。
The paper discusses the effect of the soil sample taken with a thin wall soil sampler upon the unconfined compression test(qu) when the sample is tested on different areas, the affect of different axial strain control and pressuring methods on the value (qu) as well as clasifying the clay soil states based on the liquidity factor(IL) and qu.
介绍薄壁取土器取得的软土土样其部位不同对无侧限抗压强度q_u试验结果的影响、在试验时轴向应变控制与加压方式的不同对q_u值的影响以及按液性指数I_L和q_u划分粘性土状态,并提出天津新港的q_u和I_L的关系式。
This paper discusses measures to improve retaining rate of injected water in reservoir in late stage of oilfield development through analyzing the relationships between retaining rate of injected water and the ratio of total oil produced to OOIP, pressure, and fluid productivity index.
通过分析存水率与采出程度、压力、采液指数的关系,探讨油田开发后期提高存水率的途径,得出了提高油田或区块的存水率,需针对油田不同开发时期的开采特点、油层物性,认真分析区分对待,采取增注、整体调剖、封堵高含水层、关停高含水低效井等措施,提高单元压力保持水平,改善油田开发效果。
This paper analyzed the variation of the fluid productivity index and oil productivity index in Wenmi oilfield and their affected factors in which include the effects of crude viscosity and starting pressure gradient on these two indexes with changes of water-cut.
对温米油田采液、采油指数变化规律及影响因素进行了分析、研究,分析了原油粘度和启动压力梯度对采液、采油指数随含水率变化规律的影响,对不同微相的采液指数随生产压差变化规律进行了研究后指出,随着生产压差的增大,河道砂的采液指数比边缘砂采液指数下降快一些;储集层渗透性越差,由压力下降引起的渗透率就越严重;采液、采油指数的变化受含水率变化影响较大;地层脱气可导致采液、采油指数下降。
The main parameters of optimized design to fracture are dimensionless fluid productivity index,dimensionless proppant number and dimensionless fracture conductivity,and it is the key that understands the relationship of these to optimum design of hydraulic fracturing.
压裂优化设计的主要参数是无因次采液指数、无因次支撑剂数、无因次裂缝导流能力,弄清它们之间的关系是水力压裂优化设计的关键。
Three hundred exploration drill-hole data in Panjin was collected;liquefaction index and liquefaction judgement were calculated;liquefaction index and liquefaction zoning for Panjin were carried out.
笔者收集了盘锦市区300多个勘探钻孔资料,并分别对其进行了液化判别以及液化指数的计算,并根据相应的液化指数对盘锦市区进行了液化分区。
New liquefaction index is presented on the basis of analyzing the liquefaction index of GBJ50011-2001.
在对规范液化指数分析基础上,重新定义了液化指数。
If a confining bed exists,the liquefaction index calculation should cover both inte- grated liquefaction index and the index for each be.
在工程实践中,在对饱和土进行液化判别时,笔者认为：在计算饱和土液化的标准贯入点深度时, 应从未整平改造前的原始地形的地面起算；不连续的多层可能液化地层其水位计算时应按各层的水位深度采分别计算；有隔水层相隔时,液化指数计算不仅要计算钻孔的综合液化指数,还应计算各层的液化指数。