围岩

Both the relation between classification of Q and overbreak as well as underbreak and the relation classification of RMR and overbreak as well as underbreak are researched in this paper.

4正确评价岩体的质量，进行围岩分类，对研究岩体质量与洞室超欠挖之间的关系及分析和预测洞室超欠挖具有重要的意义。

The application of smoothwall blasting in crushed surrounding rock of No.2 tunnel with crushed surrounding rock has obtained more satisfactory results through selecting rational blasting parameters,adopting right supporting method and controlling the overbreak or underbreak of the tunnel effectively,etc.

文摘：在周家山2号隧道破碎围岩施工中，应用光面爆破技术，通过选择合理的爆破参数，正确的支护施工方法，有效地控制隧道的超欠挖，加快掘进速度，取得了较理想的效果。

Usually It is used for detecting the thickness of overlayer, the rise and fall of bedrock, concealed fault, distinguishing degree of cranny and estimating quality of rocks and the classification of wall rocks, etc.

它常用来探测覆盖层厚度、基岩起伏、隐伏断层以及判别裂隙程度、评价岩体质量和进行围岩分类等工程地质问题。

In terms of the location of mining areas in Xiang-Qian mercury deposit belt as well as regional geology and paleogeographic setting.the genesis of country rocks is discussed.

梁仁枝，许效松，贵州丹寨寒武系层控型汞——金矿床研究由矿区在湘黔汞矿带所处的位置，结合区域地质及古地理背景，讨论了含矿围岩的成因。

The deformation and stability mechanisms of pelitic soft rock drift under rich water condition are more complicated than those of the general ones.

富水条件下泥质软岩巷道破坏及稳定性机制比一般软岩巷道更复杂，不仅需要采用多种复合支护控制围岩非线性大变形，还必须进一步控制其泥化进程。

The deformation and stability mechanisms of pelitic soft rock drift under rich water condition are more complicated than those of the general ones.

摘要富水条件下泥质软岩巷道破坏及稳定性机制比一般软岩巷道更复杂，不仅需要采用多种复合支护控制围岩非线性大变形，还必须进一步控制其泥化进程。

All these characteristics suggest that the perlitic rocks might have originated from upper crust, and their pyroxene xenocrysts may be the results of assimilation and contamination of wall rocks during the migration and ascent of magma.

这些特征表明，珍珠岩原岩可能来自于上部地壳，其辉石等捕虏晶为岩浆上侵运移过程与围岩发生混染作用的结果。

A passage system means the total amount of passages w ithin a petroliferous system and its relative country rocks.

输导体系是泛指某一含油气系统中所有的运移通道及相关围岩的总和。

Based on the polygenetic compound theory, in combination with the study of regional geology, the geological characteristics of the ore field and mineral deposit geochemistry, this study discusses the constraint from geological structures and ore-bearing wall rocks on the mineralization and presents that the Dachang tin-polymetallic ore field genetically belongs to polygenetic compound type relevant to magmatic-hydrothermal superimposition and modification.

运用多因复成理论，通过对区域地质背景、矿田地质特征、矿床地球化学等方面的研究，探讨地质构造与容矿围岩对成矿的制约，认为大厂锡多金属矿田在成因上为岩浆叠加改造混合热液多因复成型

According to the research of strata element contents, REE, stable isotope and wall rock alterations, ore forming substances are from both mantle and crust, and the ore deposit has the characteristics of mutiple metallogenesis and polygenetics, belonging to mantle crust polygenetic compound deposit .

老厂银铅矿床主要受断裂构造控制。对矿区地层元素丰度、稀土元素、稳定同位素及围岩蚀变等进行研究，结果表明，成矿物质有幔、壳两大来源，矿床具多期多成因的特征，属幔－壳型多因复成矿

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。