Shear strength and crushing characteristics of calcareous sand in South China Sea under the influence of three factors [PDF]
Calcareous sand, a type of marine soil found in the South China Sea, is characterized by its porous nature, irregular particle shape, and susceptibility to breakage. However, few studies have examined the mechanical properties of calcareous sand from the
Hao YANG +3 more
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Modification method of borehole shear mechanical parameter characterization and its experimental study [PDF]
The borehole shear test is an important method to quickly measure the shear strength of rock in the field, but its application is limited due to its large measurement error.
Bingyuan CUI +8 more
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Experimental Study on Static and Dynamic Characteristics of Residual Soil and Improved Soil in One Site in Zhangzhou Developing Zone [PDF]
, 2012 论文以残积土及其改良土的静、动力特性试验研究为主题，选取漳州开发区某工地残积土为试样，利用无侧限压缩仪、静三轴仪和动三轴仪为主要试验设备，测试试样的静力特性和动力反应，从而研究含水率、水泥掺入量等因素对残积土及其改良土的静、动力特性的影响。主要研究内容如下： （1）制备不同含水率和不同水泥掺入量的土样，进行无侧限抗压强度试验，测定其应力—应变曲线，通过试验结果分析，研究试样极限抗压强度随含水率、水泥掺入量变化关系。 （2）进行静三轴固结不排水试验，测定不同含水率和不同水泥掺入量的土样的应力—应变曲线 ...
朱梦芸
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Mechanism of steel slag powder stabilization and improvement of expansive clay [PDF]
Expansive clay is prone to geological disasters such as roadbed deformation, slope instability, and landslides under long-term hot and humid conditions.
Chuan YU +3 more
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MECHANISM OF PROGRESSIVE FAILURE OF A KIND OF FAULTED ROCK SLOPE DUE TO SLIP-WEAKENING [PDF]
, 2004 含裂隙的岩土材料在剪切作用下,随着剪应变的增加,裂纹端部一定区域内的强度会表现出滑动弱化的现象.岩土材料这种性质的变化不同于粘性土结构性破坏,也不同于剪胀.在一定的载荷作用下,坡体内裂隙端部的滑动弱化使坡体内的应力重新分配,从而使得应力集中加剧,裂隙尖端进一步扩展,造成岩体结构性的破坏,乃至整个滑面的贯通直至发生滑坡.因此 ...
丁桦, 孟祥跃, 张均锋, 徐永君
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Formation mechanism and stability analysis of a landslide in altered ophiolite in the upper reaches of Jinsha River: A case study of the Duirongtong landslide [PDF]
Objective The tectonic suture zone of the Qinghai-Tibet Plateau has a complex rock mass structure and special lithology combination and is thus prone for large landslides.
LI Jinqiu +3 more
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, 2014 汶川大地震后,根据最新标准,中小学教学用房需提高一类设防,故需对原结构按新规范进行全面检测和抗震鉴定。若鉴定结果表明该结构不符合要求,则需进行加固。本文结合工程实例分析,对砌体结构抗震鉴定和加固方法进行分析和论述 ...
连滨晔
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Layered gravel soil slope stability of a waste dump considering long-term hard rain [PDF]
, 2016 In order to examine the effect of long-term hard rain on the layered gravel soil slope stability of a waste dump, the for-mula derivation relating natural water content, natural unit weight and natural volumetric water content was conducted to help to ...
LUO Cheng-yan +3 more
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VARIATION of THE SHEAR STRENGTH of XIAMEN UNSATURATED RESIDUAL SOILS WITH WATER CONTENT [PDF]
, 2015 采用普通应变控制式直剪仪对非饱和残积砂质黏性土和黏土进行慢剪强度试验,试验结果表明,砂质黏性土的黏聚力和内摩擦角均对含水量变化敏感,黏聚力随含水量的变化呈二次抛物线关系,内摩擦角随含水量增大呈幂函数减小;含水量对黏土强度的影响主要是降低了黏聚力,对内摩擦角影响很小。黏聚力随含水量的增加呈指数减小。针对上述变化规律,分别建立实用的强度经验公式,避免了吸力量测和计算困难。对提出的强度公式进行试验验证,计算预测强度并与实测强度相比较,结果表明不同竖向应力条件下,高竖向应力下强度的预测精度更高 ...
陈东霞, 马亢, 龚晓南
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Study on Spatial Variation of Shear Mechanical Properties of Soil-rock Mixture [PDF]
, 2019 The soil-rock mixture (SRM) is a kind of special engineering geological material, which has been exposed to the field for a long time and is affected by rainwater seepage, geological force, slope sliding force and human activities, resulting in the ...
Huang, Yisheng +4 more
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