1) packsand
松散钙质细粒砂岩
2) soft fine sandstone
松散细砂岩
1.
Rational coal caving step distance setting for fully mechanized longwall top coal caving face under soft fine sandstone roof;
松散细砂岩顶板下综采合理放煤步距的确定
3) dead-unconsolidated thin sandstone
极松散细砂岩
1.
In order to optimize the parameters of running top coal under differentcoal and gangue fragmental size,on the basis of measuring and analyzing the distribution character of top-coal fragmental size,running top-coal was studied for the coal seam with dead-unconsolidated thin sandstone roof by loose medium model experiment.
为了优化不同煤矸块度条件下的放煤工艺参数,在实测分析顶煤破断块度分布特点的基础上,采用散体模型试验的方法对煤层顶板为极松散细砂岩条件下的放煤工艺进行了研究。
4) sandrock
[英]['sændrɔk] [美]['sænd,rɑk]
松散砂岩
5) calcareous sandstone
钙质砂岩
1.
Discussion on distribution characteristics of calcareous sandstone in Shihongtan uranium deposit and its genesis;
十红滩铀矿床钙质砂岩的分布特征及成因探讨
6) Fine-sandstone
细粒砂岩
1.
The deformation characteristics and the plastic-loop of the fine-sandstone is studied under the loading and(unloading) condition at the three different deformation-rates and the two different stress-levels,the results show: 1) There is really the plastic-loop in the deformation curve for the loading deformation curve is different form the unloading deformation curve.
通过对循环载荷条件下细粒砂岩在不同载荷水平、不同位移速率时的变形特性及其塑性滞回环演化规律的分析发现:1)循环载荷条件下岩石的加、卸载曲线不重合,将形成一封闭的塑性滞回环,该塑性滞回环从第2循环起将趋于稳定;2)不同载荷水平和不同位移速率下第1循环时的各拟合参数值与第2循环相比存在有较大变化,但从第2循环曲线起,各拟合参数均将逐渐趋于恒定;3)随着位移速率和载荷水平的变化,其拟合参数将随之而发生变化;4)在相同位移速率和相同载荷水平条件下,同一次循环时岩石变形曲线的加载段与卸载段的相应拟合参数值不同。
2.
The deformation characteristics of the fine-sandstone is studied under the loading and unloading conditions at the three different deformation-rates and the two different stress-levels.
通过对细粒砂岩在不同位移速率、不同载荷水平时循环加、卸载条件下变形的演化规律的实验研究发现,细粒砂岩在循环加、卸载条件下的卸载曲线与加载曲线不相重合,将形成一封闭的塑性滞回环,且该塑性滞回环从第2次循环起几乎不发生变化。
3.
Experimental Research on the Evolution of Hysteresis Curve of Fine-sandstone with Different Water Saturation;
通过周期性循环载荷作用下的烘干、自然干燥、饱水等3种不同水饱和度时细粒砂岩变形特性及其滞回曲线演化规律的实验研究,分析结果发现随着岩石含水量的不断增加,岩石的强度、变形及其弹性模量将随之减小,每次循环形成的滞回曲线的变化有越加明显的演化趋势,但是随着循环次数的增加各个应变相对残余变量均逐渐趋于稳定。
补充资料：燧石,火石,细粒砂岩
CAS：15723-40-7
分子式：SiO2
中文名称：亲有机物粘土；玛瑙；紫晶,水碧,紫水晶；玉髓；燧石,火石,细粒砂岩；大块纯石英晶体,大水晶；蔷薇水晶,蔷薇石英,鞭蓉石
英文名称：silica, crystalline - quartz；agate；alpha-quartz；amethyst；chalcedony；cherts；crystalline silica, quartz；crystallized silicon dioxide；flint；flintshot；free crystalline silica, quartz；gold bond r
分子式：SiO2
中文名称：亲有机物粘土；玛瑙；紫晶,水碧,紫水晶；玉髓；燧石,火石,细粒砂岩；大块纯石英晶体,大水晶；蔷薇水晶,蔷薇石英,鞭蓉石
英文名称：silica, crystalline - quartz；agate；alpha-quartz；amethyst；chalcedony；cherts；crystalline silica, quartz；crystallized silicon dioxide；flint；flintshot；free crystalline silica, quartz；gold bond r
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参考词条