rock-like mass

Fractal Dimension Classification Method of Rock Mass Structure of Dam Foundation Engineering

坝基工程岩体结构分类分数维研究

Rock fissure belongs to a lower tectonic level in the rock mass and controls the stability of the rock mass. Meanwhile, it is related to flow and transportation of underground fluid, storage of oil gas and so on.

岩石裂隙属于岩体中较低的构造层次，同样控制着岩体工程的稳定性，与地下流体的流动和运移、油气的储藏等也息息相关，因此对岩石裂隙的研究具有重大的意义。

The rock mass structure can be expressed by rock stratum effect thickness influence coefficient. It is more scientific then using roof rock and sand content in the study of coal seam gas preservation.

研究表明，煤层围岩岩体结构控制了煤层瓦斯的赋存，岩体结构可用岩层效应厚度影响系数来表示，应用这一参数研究煤层瓦斯赋存比用煤层顶板岩性及含砂率更科学。

Field bearing-slat test on compound rock mass simulated by computer

复合岩体现场承压板变形试验的计算机模拟

Numerical simulating test on joint rock mass properties in Three Gorges Project

三峡节理岩体力学性质的数值模拟试验

The compress strength of basaltic rock mass increases by 2~ 3 times from upper part, lower part of weakly weathered rock mass to fresh one, While tension strength increases with 1 magnitude.

从弱风化上段、弱风化下段到微新岩体，抗压强度以2～3倍的量级增大；而抗拉强度以一个数量级增大。

...a huge round mass of smooth rock protruding from the water...

一块光滑的巨型圆石露出水面

Standard for engineering classification of rock masses ( GB50218-94), the rock engineering geological classification of Code for water resources and hydropower engineering geological investigation ( GB50267-99), Rock Mass Rating system ( Bieniawski, 1973) and Q-system were used in the rock mass quality classification.

采用工程岩体分级标准（GB50218-94）、水利水电围岩工程地质分类（GB50267-99）、岩体地质力学RMR分类及岩体质量指标Q系统围岩分类，对左岸地下洞室区围岩按其基本指标作出定量化评分、分级。

In-situ test of fractured rock mass with high pressure seepage in dam foundation

坝基破碎岩体高压渗透变形原位试验

There is essential difference between the mechanical condition of unloading engineering rock mass and loading engineering rock mass.

卸荷状态工程岩体的力学条件与传统的加载岩体有本质的区别。