This paper has got the initial stress field and boundary conditions. On this basis, the overall planar elastic-plastic finite element model of the underground caverns was established by ADINA ( a finite element program for automatic dynamic incremental nonlinear analysis).

1、

Based on center diagram method and center cross diagram method, Center drift excavation method is developed as a new construction method for the large-scale shallow tunnel engineering after side drift excavation method and PBA method.

北京地铁施工中所采用的中洞法是以CD、CRD法为基础，继侧洞法和柱洞法（PBA工法）之后发展起来的一种开挖大型浅埋暗挖地下洞室的新工法。

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2、

Based on the NURBS technique and the theory of partition for geologic body, the 3-D engineering geologic model for underground structures is established.

工程区域地质条件是影响地下洞室群布置最主要的因素。本文基于NURBS技术和地质结构单元实体分割理论，建立了工程地质三维整体模型。

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3、

FLAC Analysis of Interaction Between Foundation and Underground Cavern

地下洞室与其上部地基相互作用的FLAC分析

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4、

A series solution for surface motion amplification due to underground group cavities: incident SH waves

地下洞室群对地面运动影响问题的级数解答：SH波入射

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5、

Numerical analysis with flac~ ( 3d) on rock mass stability surrounding cavern group in the left bank slope of a hydropower station on lan-cang-jiang River

澜沧江某电站左岸地下洞室群围岩稳定性的FLAC~（3D）分析

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6、

Improvement of the generation of the initial stress field by using flac~ ( 3d) and application in a huge underground cavern group

FLAC~（3D）分析中的初始应力场生成及在大型地下洞室群计算中的应用

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7、

An analytical solution for dynamic stress concentration of underground cavities under incident plane P waves

平面P波入射下地下洞室群动应力集中问题解析解

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8、

Computer analysis model for natural ventilation network of underground cavity group

地下洞室群自然通风网络计算机分析模型

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9、

Application of CAD three-dimensional model to the stability analysis of underground cavity's wall

CAD真三维实体模型在地下洞室边墙稳定性评价中的应用

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10、

He was seen talking with a young girl.

有人看见他和一个年轻姑娘在讲话。

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11、

Cinderella Story about a young girl doing all the housework was outdated.

《灰姑娘》故事里描述的年轻姑娘做所有家务活已经过时了。

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12、

No man will bear unprotected exposure to a young girl's eyes.

没有人可以忍受赤裸裸地暴露在一个年轻姑娘的眼皮下。

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13、

In it, a young girl had been followed and murdered.

片中，一位年轻姑娘被跟踪并被杀害。

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14、

He has started keeping company with that young girl.

他跟那位年轻姑娘交上朋友了。

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15、

And that's no way for a young lady to behave!

这可不是一位年轻姑娘该做的事！

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16、

He's had so many beautiful, young women.

他身边有的是漂亮的年轻姑娘。

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17、

He used me to get close to young girls.

他利用我接近那些年轻姑娘。

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18、

' That's a lovely young woman,' said the gatekeeper.

那个年轻姑娘很漂亮，守卡人说。

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19、

I should remind you that there are plenty of young girls

我得提醒你有很多年轻姑娘

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20、

The young girls had difficulty in restraining themselves from laughter.

这些年轻姑娘们很难忍住不笑出声来。

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