断面系数

This paper mainly introduces the practice of weak throwing room blast with uncoupl-ing strip cartridge in quarry and mine.

本文主要介绍不偶合条形药包弱抛掷峒室爆破在石矿场应用的实践，根据岩石性质、巷峒断面、所用炸药导出了最佳不偶合系数，取得了理想的爆破效果。

After 2～4 weeks, the amounts of the osteoblast and chondroblast in medullary callus in SMC group were more than group of CP, IN.

生物力学时间断面研究结合体外DEXA测量结果表明：术后2周SMC组和IN组刚度系数、面积比率、扭力刚度、最大扭力无显著性差异，CP组略差。

During the process of the fore mentioned analyses, some tentative works as follows were done.(1)On the basis of the fundamental of spatial analytic geometry, the basic method for displaceable block searching was put forward and the relevant program was written. With this program one can easily search out all the displaceable blocks and omitting of blocks, which is very common in searching blocks manually, can be avoided.(2)The coefficient of stability of blocks with failure mode II-2(that is, sliding on a single sliding surface, but confined by near intersecting line )was deduced.(3)The multi-cavern effect of Laxiwa underground caverns was studied on the assumption that all of the caverns were full face tunneled at the same time.(4)The stability classification scheme of rock mass surrounding large scale underground caverns was established. In addition to inherit the merits of the method of engineering geological

在完成上述工作的过程中，本论文主要在以下几个方面进行了一些探索：①基于空间解析几何原理，提出了块体搜索的基本思路并编制出相应的程序，基本实现了块体搜索的自动化，既大大缩短了块体搜索时间，又能防止因人工搜索引起的遗漏；②推导出Ⅱ-2型(单滑面滑动，但受侧限面约束)块体的稳定性系数计算公式；③以数值模拟方法论证了拉西瓦地下厂房洞室群全断面一次开挖时群洞效应的具体特点；④以岩体质量、开挖效应、群洞效应和次生灾害效应为评价指标，建立了&大型地下洞室群围岩稳定性分类&方案；该方案既继承了水电行业规范&围岩工程地质分类&法的优点，又综合考虑了大型地下洞室群的工程特点。

The aerostatic stability analysis of the gantries and main arch ribs under wind load is accomplished by ANSYS program. Firstly, the CFD module of ANSYS is used to compute the aerostatic force coefficients of arch ribs sections. And then, the static and stability analysis of gantries and main arch ribs under several construction statuses is completed.

门式膺架和主拱肋的静风稳定性分析利用ANSYS程序进行，首先通过ANSYS的CFD模块计算主拱肋断面的静力三分力系数，然后对门式膺架和主拱肋进行各种施工状态下的静力和稳定性分析。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。