围压

而且在气干状态下，不管是峰值强度还是残余强度的n值均随着围压的增加而增加。

In air-dried condition , the parameter n increased with the increase of confining pressure for both peak and residual strength .

Biot系数静态值大于其动态值，二者均与孔隙度有关，并随围压的增大而减小，建立了Biot系数的预测模型；

The static Biot coefficient is larger than the dynamic one . They are all related to porosity and decrease with the confining pressure .

裂隙花岗岩卸围压作用下损伤破坏机理CT检测

Real-time CT test of meso-damage evolution law of jointed granite on unloading confining pressure

实验结果表明，此显微X光CT方法可用来测试在各种围压和孔隙水压条件下一般方法很难测得、小或不规整试样的变形。

The method of micro X-ray CT is applicable for deformation measurements of small and irregular rock specimens under various confining and pore water pressures .

围压条件下PDC切削齿受力测量传感器的设计

Design of Load Sensor for PDC Cutting Elements in the Confined Circular Conditions

通过室内动三轴试验，研究了EPS（expandedpolystyrene）块体在不同围压以及应力水平下的动力特性。

Based on laboratory dynamic triaxial tests , the dynamic properties of EPS ( expanded polystyrene ) block under various confining pressures and stress levels are studied .

得到非常清晰的裂隙花岗岩在卸围压破坏全过程中从裂纹发展、贯通到破坏等各个阶段的CT图象。

Through CT scanning , the clear CT images are obtained to include the whole process of rock failure on unloading confining pressure from the crack development , penetration and fracture failure in the different stress states .

空心圆柱仪（HCA）模拟恒定围压下主应力轴循环旋转应力路径能力分析

Analysis on ability of HCA to imitate cyclic principal stress rotation under constant confining pressure

随着围压Pw的增加，有效靶距与喷嘴直径比Sv/d呈指数衰减。

With the increase of ambient pressure , the valid stand-off distance ( Sv ) is exponential attenuation .

得到大庆1号及2号井岩样纵波波速及Q与围压及温度之间的拟合公式。

The regression formula for P-wave velocity as well as quality factor Q as a function of temperature and confining pressure has been got for core samples of Daqing well No. 1 and No.

试样结构性损伤越大，在同一吸力与围压作用下，ME、SD值变化更为明显。

Under the same suction and net confining pressure , the more severely damaged the samples have , there are the more obvious change in the values of ME and SD .

尽管岩样轴向承载能力与围压成线性关系，但岩样在围压下轴向压缩破坏的断面，并不能由Coulomb准则准确预示。

The relation is linear between axial supporting capacity of specimen and confining pressure , but the crack angle of specimen can not be given by Coulomb criterion .

利用可同步进行CT扫描的三轴仪，进行了不同围压下路基填土的三轴压缩实验和蠕变实验。

The triaxial compression tests and creep tests of subgrade soil samples with different lateral pressures are conducted with a new set of modified triaxial compression apparatus which made the soil samples can be scanned with CT at the same time during compression process .

本文在先进的GDS应力路径三轴仪上对饱和砂土进行等围压不同周期的慢速往复荷载排水三轴试验。

Consolidated drained triaxial tests are conducted for the saturated sand under slow reciprocating loading by the advanced GDS stress path triaxial apparatus .

围压是影响D值大小的一种因素，在约35MPa以下，D值随围压增加而降低；

Confining pressure is one of factors affecting D value .

本文提供了两种标准岩石Jc~2和Tc~2在围压下的三轴应力试验，它对钻头设计及选型非常重要。

The test study of triaxial stress for two typic rocks , J_c and T_c , under confined pressures is presented in this paper . It is of great significance to the design of bits and the application of bit types .

分别采用改进了的SHPB被动围压试验方法及一级气炮，研究了水泥砂浆石在准一维应变及一维应变下的动态力学响应。

The dynamic mechanical behaviors of cement mortar under quasi one and one dimensional strain states are studied by using an improved passive confining SHPB method and one stage gas gun respectively .

岩石压缩系数的常规测量方法是以Terzaghi方程为理论基础的。该理论将外压与内压的差值作为净围压是不妥当的，主要原因是没有考虑孔隙度的影响。

Abstract The measurement of rock compacting is theoretically based on Terzaghi Equation , which takes incorrectly the difference of P o and P I as net confining pressure .

通过室内多功能三轴试验，研究了EPS材料在不同围压，不同频率，不同循环次数的EPS材料的工程性状和循环荷载作用对EPS的静力学工程性状的影响。

Through multi - functional triaxial test , the static mechanical property of EPS ( expanded Polystyrene ) is studied with the change of EPS engineering character and cycle load action in different confining pressure , frequency , and cycle index .

（q/p′）（IL）随围压的增大而减小，即若将IL与临态线（CSL）之间的区域称为潜在不稳定区域，则不稳定区域随围压的增大而增大。

( q / p ' ) _ ( IL ) decreases with increasing confining pressure , i.e. the area of the zone of instability ( i.e. the area between IL and critical state line ) increases with confining pressure .

对AC-16、AM-10、AM-20三种型号的沥青混凝土分别进行了两个温度、三种应变率下的SHPB套筒围压实验。

The SHPB sleeve confining pressure experiment on the AC-16 , AM-10 AM-20 asphalt concrete is done under two temperature and three strain rate .

利用东北大学岩石破裂过程分析系统（RFPA2D），研究了围压卸荷对矿柱破坏模式的影响。

The influence of unloading confining-pressure on the failure Modes of Pillar was researched using Rock Failure Process Analysis ( RFPA2D ) developed by Northeastern University .

岩石动态强度更好地符合霍克-布朗强度准则，特别是在较高围压下（如大于100MPa）。

The dynamic compression strengths are more accorded with the Hoek-Brown criterion , especially under higher confining pressure ( higher than 100 MPa ) .

对京九线路基粉土用GDS三轴仪进行固结不排水剪试验，研究不同围压、含水量、压实度下压实粉土样的应力-应变关系。

Based on the CU triaxial tests on compacted silt from the Beijing to Kowloon railway subgrade , the stress-strain relationship analysis is made on the silt under different cell pressures , water contents and degrees of compaction .

用被动围压的SHPB实验方法，研究了粉末冶金摩擦材料准一维应变动态力学响应，分析了实验结果与围压套筒的关系，得到了该材料的动态泊松比，动态杨氏模量，动态压缩强度。

SHPB method with passive confined pressure was used to study the dynamic mechanical behavior of powder metallurgy friction material under quasi-one dimensional strain state , the dynamical poisson ratio , dynamical young 's modulus and dynamical compressive yield strength were obtained .

通过在MTS815.03型电液伺服控制试验机上进行试验，得到了大理岩在不同围压下的应力-应变全过程曲线。

Through the experiments on MTS 815.03 electric-hydraulic servo-controlled testing machine , the whole stress-strain curves of marble at confining pressures are drawn .

研究冲击载荷下铜基摩擦材料的微观形变，试验是在分离式Hopkinson压杆上完成的，载荷工况分没围压和有围压两种，应变率范围为（102～103）/s。

The micro deformation of Cu base frictional materials obtained with powder metallurgy under impact load was conducted on Hopkinson pressure bar with confined pressure and non confined pressure in the range of strain rate ( 10 2 ~ 10 3 ) / s.

运用岩石破裂过程分析系统RFPA2D模拟了岩石在变形破裂过程中围压对岩石变形、强度及声发射特性的影响。

Using rock failure process analysis ( RFPA ~ ( 2D )) code , the confining pressure effects of deformation , strength and AE of model rock specimens during failure process are studied .

在400MPa围压及20～850℃的温度范围内，研究了花岗岩的变形破坏及声发射时序特征。

Under the condition of 400 MPa confining pressure and different temperatures ( from room temperature to 850 ℃), features of failure and AE temporal sequences of granite have been studied .

在考虑了土的自重产生的围压对土极限承载力的影响后，利用Mohr-Coulomb屈服准则得到了土的极限承载力沿深度的变化关系，并采用双曲线函数来描述这一关系。

After considering the effects of confining pressure caused by soil gravity on the ultimate resistance , the relationship between the ultimate resistance and the depth of soil is obtained based on Mohr-Coulomb failure criterion , and a hyperbolic function is proposed to describe this relationship .