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  group
    A group of CSS samples was also prepared with aw=15%,C=0.5 for comparison.
    作为对比,还做了aw=15%,C=0.5的1试样.
短句来源
    Computer protection disposition and project design of power generation and transformation group of Lianhua Hydropower Station
    莲花水电站微机发变保护配置及工程设计
短句来源
    With the use of this method, one group of the joint planes has been analyzed.
    利用这种方法对岩体中一结构面进行了具体分析。
短句来源
    The results of regression show that in the first group as tri—random (M, E and H) model, regression standard deviation is σ_M=0. 577, variation coefficient is V_M=0.111. It shows that tri—random model is very useful to predict the maximum magnitude of newbuilt reservoir which will induce earthquake of M≥4.5.
    第二的双随机量的σ_M=1.028,V=0.234,三随机量时σ_M=1.032,V=0.235。 说明用三随机量模型对可能发生M≥4.5级的新建水库最大诱震震级的预测是可用的。
短句来源
    According to the survey results of a vast amount of surface outline curves of joints drawn on-the-spot-by using the method of reviced straight side and simple and easy longitudinal section device and,based onthe comprehensive evaluation of roughness coefficients of strike direction and dip direction of 12 groupsjoints of 3 structural regions of slope rock mass,the pater estimates the shear strength parameters along strikeand dip of each group joint by using JRC-JCS model.
    根据简易纵剖面仪野外现场绘制的大量节理表面轮廓曲线的修正直边法测量结果,综合评价边坡岩体3个结构区12节理沿走向方向和沿倾向方向的粗糙度系数,并在此基础上,运用JRC—JCS模型估算了各节理沿走向和倾向的抗剪强度参数。
短句来源
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  formation
    The anastomosing river delta sedimentary characteristies of Shangganchaigou Formation of the Gaskule oilfield of Caidam Basin
    柴达木盆地尕斯库勒油田上干柴沟网状河三角洲沉积特征
短句来源
    Under the influence of original formation, tectonic reconstruction, superficial and epigene-action, network of structure planes was created in rock mass, accordingly complicated the rock mass structure.
    由于受原生建造、后期构造改造和浅表生作用的影响,岩体中常发育多裂隙,形成相互交切的结构面网络系统,使岩体结构复杂化。
短句来源
    The location of the dam mainly comes out the Xuzhuang Formation stratum of Cambrian system and the Relax Stack Formation stratum of Quaternary system, and partly comes out the Zhangxia Formation stratum.
    1、分析了山东临沂会宝岭水库土坝坝址区工程地质条件:坝址区主要出露寒武系徐庄地层以及第四系松散堆积层,局部出露张夏地层;
短句来源
    Below the terrace with an elevation of 2130m is a side slope with a height of 85 m,where the entrance of the tunnel was planed to be opened. After talus materials were removed,there were two grouped high density formation cracks in direction of NS and NE.
    高程2130m平台以下为85m高的洞脸边坡,该部分坡积物清除完后,意外地出现了NS向及NE向两密集度很高的构造裂隙。
短句来源
    The mechanical parameters of sandstone are measured using rock physical parameter automatic testing system, made by MTS Corporation. The sandstone samples, with current burying depth of 1400 1700m, are collected from Yanchang Formation, Triassic, southwest of Shaanganning Basin. The testing formation conditions simulated include confining pressure, temperature, saturated by water, and change of the direction of samples.
    利用MTS公司生产的地层条件下岩石物理参数综合测试系统对陕甘宁盆地西南部埋藏深度1400~1700m三叠系延长储层砂岩进行了模拟地层条件(包括地层围压、加温、饱水及改变样品方向等)的岩石力学性质测试,获得了该地区延长储层砂岩在不同围压条件下的弹性模量、泊松比和抗压强度。
短句来源
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  set
    Application of State Estimation Theory to Observation of Strain Meter Set
    状态估计理论在应变计观测中的应用
短句来源
    Some Technical Questions about 225MW Hydrogenerator Set Stopping by Electric Braking in Liujiaxia Water Power Station
    刘家峡225MW水轮发电机电气制动停机若干技术问题
短句来源
    Study on the Stable Region of Elastic Water Hammers in the Long Water Inlet Pipe of A Turbine Generator Set
    对长压力引水管道水轮发电机弹性水击稳定域的研究
短句来源
    Study on Thrust Bearing Support Optimization Design for Large Hydrogenerating Set
    大型水轮发电机推力轴承支架优化设计研究
短句来源
    Aiming at the plentiful data of fault monitoring of hydroelectric units,the rough set theory and genetic algorithms are introduced into the hydroelectric units fault diagnosis in order to improve the fault diagnosis efficiency.
    针对水轮发电机故障监测中的大量数据,为了提高故障诊断效率,考虑将粗糙集理论和遗传算法引入水轮发电机故障诊断中。
短句来源
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  series
    A series of indoor analog test are done simulating the site of building dam, including bilateral and single drainage with different thickness with 20cm, 30cm and 40cm.
    分别进行了两灰样的双向排水和单向排水模拟试验,双向排水模拟试验分别进行了冲填层厚度为20cm、30cm、40cm的情况。
短句来源
    Series model test with 3 diameters of cylinder and 3 kinds of muddy bed material are carried out.
    研究中采用了系列模型延伸法,进行了3不同尺度的大圆筒模型和3种不同重度的淤泥底质的系列试验。
短句来源
    To further provide sufficient test data for formulating the norm fracture of hydro-engineering concrete in China,as suggested by the committee on norm concrete fracture test,a series of fracture tests were performed on a total of 140 specimens via three-point bending and wedge-splitting,with the maximum dimensions being S×D×B=2200 mm×550 mm×240 mm and 2H×D×B=1200 mm×1200 mm×250 mm respectively.
    为配合水工混凝土断裂试验规程在我国的制定,提供更充足的基础数据,受规程编制委托,进行了最大尺寸为S×D×B=2200 mm×550 mm×240 mm的三点弯曲梁试件和最大尺寸为2H×D×B=1200 mm×1200 mm×250mm的楔入劈拉试件共140个试件的断裂试验。
短句来源
    A series problems, such as hydrogenerator vibration, rupture of upper stay column and speed ring, crack of runner vane, damage of the servomotor guide tube and the diversion cover plate & cavation of draft tube, have appeared on 200MW hydrogenerator in Ankang Hydropower station for the reasons of design, manufacture, setting and running.
    安康电厂200MW水轮发电机由于设计、制造、安装及运行等诸多方面的原因,出现了机振动、上机架连接销钉断裂、接力器导管拉伤、控制环开裂、转轮叶片裂纹、引水盖板破坏以及尾水管气蚀等一系列问题。
短句来源
    (3) Regional flood frequency analysis is a useful approach method that avoids the shortness of at-site sample series and estimates design flood for un-gauged area.
    (3)区域频率分析能充分利用相似流域的资料来扩充信息量,克服单站样本系列资料短缺的局限,解决无资料地区设计洪水的估算问题。
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  group
In all these cases we actually show that Γ=π1(M) has a finite index subgroup which is mapped onto a nonabelian free group.
      
We define a map from an affine Weyl group to the set of conjugacy classes of an ordinary Weyl group.
      
Open subsets of projective spaces with a good quotient by an action of a reductive group
      
The aim of the paper is to describe all open subsets of a projective space with an action of a reductive group which admits a good quotient.
      
Reductive group actions on affine quadrics with 1-dimensional quotient: Linearization when a linear model exists
      
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  formation
In the present study, two of the probable an umor marine compounds, manzamine A and sarcophine, were screened using benzo[a]pyrene (BP)-derived DNA adduct formation in MCF-7 cells as intermediary biomarker.
      
Most of the compounds were found to be very potent inhibitors of malondialdehyde (MDA) formation at 10-3M.
      
However, no significant inhibitory effect was obtained on superoxide anion formation.
      
Results of clone formation and Flow cytometry analysis (FCAS) suggested that prodigiosin has the capability of restraining mitosis by regulating the cell cycle.
      
These corresponding chalcones were reacted with phenyl hydrazide in glacial acetic acid, which led to the formation of novel 4-[5-(substituted phenyl)-1-phenyl-4,5-dihydro-1H-3-pyrazolyl]-2-methylphenol derivatives.
      
更多          
  set
We define a map from an affine Weyl group to the set of conjugacy classes of an ordinary Weyl group.
      
The propertyC1 resp.C2 is equivalent withG having a compact set of generators, resp.
      
Xi defined a partition ofWf into canonical right cells and the right order ≤R on the set of cells.
      
Let ζ-1/2 be the inverse on the set of regular elements ofu of a square root of the discriminant of.
      
We do this by using an explicit set of coordinates on the Schubert cell.
      
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  series
Finally we show for more than half of the infinite series that a presentation for the fundamental group of the space of regular orbits ofW can be derived from our presentations.
      
We consider 3-parametric polynomialsPμ*(x; q, t, s) which replace theAn-series interpolation Macdonald polynomialsPμ*(x; q, t) for theBCn-type root system.
      
This is done using a descending series associated to the complex structure and the Borel spectral sequences for the corresponding set of holomorphic fibrations.
      
The list consists of many series defined by simple equations, and of several exceptional superalgebras, among themE(3, 6).
      
We motivate and prove a series of identities which form a generalization of the
      
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  其他


~~

关于脈动流速的观測問題,在气流里面,已經圓滿解决;在清水水流里面,用速續摄影的方式,也得到了解决;在挾沙水流(渾水)里面,还没有很好地解决。为了适应我院关于挟沙水流和其他某些科学研究的需要,我組于1958——1959年,在我院党委和院行政領导下,貫彻执行党的教育方針,采取教师、学生、工人相結合的方式,試制成功应变式脈动流速傳送器梢员容^滿意地观测清水水流及挾沙水流(渾水)的脈动流速。本文对这种傳送器的结构和性能分别作了討論。另外,由于測量的需要,我們还試制了电子測量仪器,本文对这种測量仪器也作了簡单的介紹。

The arch belly gravity dam is a new type of dam. Its upstream face is inclined and it has a belly arch within. The stress distribution of the dam section is comparatively uniform so that the strength of materials can be filly utilized; the vertical stress at the heel of the dam is comparative high so that the capability of the dam to sustain extraordinary overloading is high. .Comparing with ordinary gravity dam, its stress condition is greatly improved. In order to search for the best profile of new type...

The arch belly gravity dam is a new type of dam. Its upstream face is inclined and it has a belly arch within. The stress distribution of the dam section is comparatively uniform so that the strength of materials can be filly utilized; the vertical stress at the heel of the dam is comparative high so that the capability of the dam to sustain extraordinary overloading is high. .Comparing with ordinary gravity dam, its stress condition is greatly improved. In order to search for the best profile of new type of dam, stress experiments of more than twenty profiles of the dam section of different dimension have been performed by photoelastic frozen method. Through balance check of forces and repeated tests of recommened profiles, it has been proved that the results of the experimentals are believable. The stress condition of several profiles is also experimented with the net method of gelatin models. The stresses are also computed by structure theory with the profile assumed as a hingeless arch. The stresses obtained by the above three methods are approximate. Based upon the results of stress experiments, the effect of the change of dimension of the profile on the stress distribution has been studied. It is considered that the rule to determine the dimension is as follow: The slope of upstream face would be 1: 0. 2-1: 0. 4, and that of the downstream face 1:0. 75-1: 0. 9; the belly arch would be made elliptical with its major axis slightly inclined toward upstream; the arch would be -25--~35% as high as the dam; the upstream leg would be thicker than the downstream leg, so that the center of the gravity of the section would be slightly shifted to the upstream. If the arch belly are used as powerhouse of hydroelectric plant, the width of the draft tube would be equal to or less than 30% of the dam block. The results of stress experiments of the finally recommended profiles have shown that the stresses in the dam section are principal compressive, the stress distribution in the dam section is uniform, and the stress at the heel of the dam is higher. Take profile 1-Ⅷ as an example, compressive stresses occur in the whole section, except that at a few points tensile stresses of no more than 4 kr/cm2 are developed. The ratio of maxinum and mininum stresses in the section is less than 2. The vertical compressive stress at the heel of the dam is, greater than two times the head at the same point, so that the dam has greater capability to resist the overloading. It can be seen that the arch belly gravity dam is a noteworthy new type of dam

腹拱式重力坝是一种新坝型,坝上游面倾斜,坝内设有腹拱。坝体断面的应力分布比较均匀,坝体材料得到充分的利用,上游坝趾的垂直应力较高,坝体承受特殊超载的能力较大,比较一般砼重力坝的应力状态有了很大改善。为了寻找这种新坝型的最好轮廓剖面,利用偏光弹性力学的冻结应力方法,做了廿多不同轮廓尺寸的坝体剖面的应力试验,经过平衡校核,对于推荐的剖面还进行了重复试验,认为试验结果是可信的。试验中个别方案还采用了软胶纲格法试验;并简化成无铰拱,用结构力学的方法进行了近似的应力计算。三种不同方法所得的应力情形是接近的。根据不同轮廓尺寸剖面应力试验的结果,分析了各种轮廓尺寸的变化对坝体应力分布的影响。初步认为确定坝体轮廓尺寸的规则如下:坝体上游边坡宜为:1∶0.2-1∶0.4,下游边坡宜为1∶0.75-1∶0.9;腹拱宜做成略向上游倾斜的椭圆形;拱高宜为坝高的25-35%;上游腿应比下游腿略厚,以使重心偏向上游;设置坝内电厂时尾水管的宽度宜等于或小于坝段宽的30%。最后推荐方案的应力试验成果,坝体基本上全部为压应力,坝体断面的应力分布均匀,上游坝趾的压应力较高。以1-Ⅷ号方案为例,坝内只个别点出现了最大为4公斤/厘米2...

腹拱式重力坝是一种新坝型,坝上游面倾斜,坝内设有腹拱。坝体断面的应力分布比较均匀,坝体材料得到充分的利用,上游坝趾的垂直应力较高,坝体承受特殊超载的能力较大,比较一般砼重力坝的应力状态有了很大改善。为了寻找这种新坝型的最好轮廓剖面,利用偏光弹性力学的冻结应力方法,做了廿多不同轮廓尺寸的坝体剖面的应力试验,经过平衡校核,对于推荐的剖面还进行了重复试验,认为试验结果是可信的。试验中个别方案还采用了软胶纲格法试验;并简化成无铰拱,用结构力学的方法进行了近似的应力计算。三种不同方法所得的应力情形是接近的。根据不同轮廓尺寸剖面应力试验的结果,分析了各种轮廓尺寸的变化对坝体应力分布的影响。初步认为确定坝体轮廓尺寸的规则如下:坝体上游边坡宜为:1∶0.2-1∶0.4,下游边坡宜为1∶0.75-1∶0.9;腹拱宜做成略向上游倾斜的椭圆形;拱高宜为坝高的25-35%;上游腿应比下游腿略厚,以使重心偏向上游;设置坝内电厂时尾水管的宽度宜等于或小于坝段宽的30%。最后推荐方案的应力试验成果,坝体基本上全部为压应力,坝体断面的应力分布均匀,上游坝趾的压应力较高。以1-Ⅷ号方案为例,坝内只个别点出现了最大为4公斤/厘米2的拉应力,?

The arch type gravity dam has the advantage of , uniform distribution of stresses in it, and also, of higher compressive stresses near the heel at its base than that of ordinary gravity dam. It is anticipated that the arch type gravity dam will have greater factor of safety. Rupture tests have been made to study the overloading factors of the arch type gravity dam and to compare it with the ordinary gravity dam. In the paper, model similarity of rupture test is derived. The method of the tests is described....

The arch type gravity dam has the advantage of , uniform distribution of stresses in it, and also, of higher compressive stresses near the heel at its base than that of ordinary gravity dam. It is anticipated that the arch type gravity dam will have greater factor of safety. Rupture tests have been made to study the overloading factors of the arch type gravity dam and to compare it with the ordinary gravity dam. In the paper, model similarity of rupture test is derived. The method of the tests is described. Altogether twelve models have been tested: 2 of the ordinary gravity dam, 1 of the ordinary gravity dam with vertical construction joint, 9 of the arch type gravity dam divided into three groups. From the results of these tests, the following conclusion may be drawn: 1) The Overloading factor under rupture of the arch type gravity dam is 8%-19% higher than that of ordinary gravity dam. And the overloading factor, under rupture, of the ordinary gravity dam with vertical construction joint is 25%-30% lower than that of the ordinary gravity dam without vertical construction joint. Vertical construction joint, however, are always used in the ordinary gravity dams, but could be avoided in the arch type gravity dam. Therefore, the arch type gravity dam will have greater factor of safety than the ordinary gravity dam. 2) During the tests of rupturing the models, cracks occured at the upstream face of the ordinary gravity dam. As for the arch type gravity dam, cracks occured near the inner face of the arch. The cracks at the upstream face of the dam will greatly in crease the uplift pressure, thereby endangering the dam. Therefore, the way of cracking of the dam near rupture is also in favor of arch type gravity dam,

(一)重力坝超载破坏的原因是多方面的,而且比较复杂。本文讨论新型的腹拱式重力坝由于改善了结构特点和应力状态,对提高超载破坏能力的影响,并与相应的宽缝重力坝进行比较。(二)本文阐述了结构破坏的模型试验原理,并附带地提到地基连接条件及纵缝灌 浆条件的模拟。(三)对实验方法,模型制作,加载方法,量测方法,以及实验步骤进行了阐述。(四)根据上述原理和方法进行了十二模型超载破坏试验,模型材料均采用砼, 比例尺为1:200,根据实验结果初步分析如下: 1)腹拱坝和同体积宽缝坝的超载能力,在其他条件相同时,腹拱坝较宽缝坝大 8%-19%,初步证明了腹拱坝具有较好的承载能力。 2)就腹拱坝而言,其坝体剖面形状对超载能力亦有颇大影响。实验结果,初步认 为腹拱高约占坝高1/3左右,倾角与合力线大致吻合(一般为60°-66°),拱顶曲率 适当减少,前后腿厚度比在1.2-1.4之间比较适宜。 3)坝体破坏的原因均由于主拉应力破坏,宽缝坝裂缝由外而内,腹拱坝则由内拱 向外裂开,因而在抵抗渗透的危险上腹拱坝亦有利。 4)对带有纵缝灌浆的宽缝坝进行的破坏试验说明,从缝对超载能力有一定影响,超载系数与同样的整体宽缝坝要低25-...

(一)重力坝超载破坏的原因是多方面的,而且比较复杂。本文讨论新型的腹拱式重力坝由于改善了结构特点和应力状态,对提高超载破坏能力的影响,并与相应的宽缝重力坝进行比较。(二)本文阐述了结构破坏的模型试验原理,并附带地提到地基连接条件及纵缝灌 浆条件的模拟。(三)对实验方法,模型制作,加载方法,量测方法,以及实验步骤进行了阐述。(四)根据上述原理和方法进行了十二模型超载破坏试验,模型材料均采用砼, 比例尺为1:200,根据实验结果初步分析如下: 1)腹拱坝和同体积宽缝坝的超载能力,在其他条件相同时,腹拱坝较宽缝坝大 8%-19%,初步证明了腹拱坝具有较好的承载能力。 2)就腹拱坝而言,其坝体剖面形状对超载能力亦有颇大影响。实验结果,初步认 为腹拱高约占坝高1/3左右,倾角与合力线大致吻合(一般为60°-66°),拱顶曲率 适当减少,前后腿厚度比在1.2-1.4之间比较适宜。 3)坝体破坏的原因均由于主拉应力破坏,宽缝坝裂缝由外而内,腹拱坝则由内拱 向外裂开,因而在抵抗渗透的危险上腹拱坝亦有利。 4)对带有纵缝灌浆的宽缝坝进行的破坏试验说明,从缝对超载能力有一定影响,超载系数与同样的整体宽缝坝要低25-30%左右,破坏规律?

 
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