支护

A fork waveguide model is proposed and the mode matching and multi-mode network technique are used to analyze the transmission characteristics of rectangular tunnel with metallic pit prop.

针对矩形巷道中由于金属支护立柱的存在而带来的分叉不连续问题，提出用分叉波导模型并用模式匹配法和多模传榆理论分析传榆特性。

The change of the reflection coefficient of dominant mode with working frequency, the row number of metallic pit prop, and pit prop diameter are obtained, respectively.

用模式匹配法求出不连续面的阻抗变换公式，利用多模传输理论求出整个不连续问题的散射参数，得出了均匀区域的基模电压反射系数与工作频率和支护立柱排数及立柱直径的关系。

Using finite-element method the effects of long objects, such as cage, train and metal pit prop, on electromagnetic wave cutoff frequency is researched systematically in regular tunnels, and it is shown that the long metal objects lower TE wave cutoff frequency and raise TM wave cutoff frequency.

利用有限元方法系统地研究了机车、罐笼、金属支护立柱等长列金属物体对井下规则隧道中电磁波截止频率的影响，可知长列金属物体的存在使TE波模截止频率降低，而使TM波模截止频率升高。

Selection of plan for prop pipelining with densely arranged large diameter pipes, working pit support , some problems and technical difficulties during prop pipelining were introduced, taking Laoshan water discharge project (Second modification for Chenglinzhuang Road) as an example.

以天津市程林庄路二期改造———崂山道排水工程为例，介绍了密排大口径管道顶管施工方案的选择及工作坑支护施工、顶管施工过程中遇到的一些问题和技术难点，并给出了相应的处理措施。

There are remarkably economy and social beneficial, have been widely used in railroad project, road slope engineering as well as water conservancy project.

已经广泛地应用于铁路工程，公路边坡工程以及水利工程等的滑坡治理、高边坡支护中。

Different kinds of well-sold springs, include tension spring, torsion spring, pull-out piece spring, special spring, spring of automobile fitting, exerciser spring, spring of coal mine-supporting products, electric tool spring, oil pump spring, stationery spring.

7A68 各种用途的弹簧，包括各种拉伸弹簧，扭转弹簧，压缩弹簧，异形簧，汽车配件弹簧，运动器械用弹簧，煤炭工业支护产品弹簧，电动工具弹簧，油泵弹簧，文具弹簧。

At the same time, the finite staff element method is used to analyze the influence of beam rigidity; and the two new methods proposed are used to analyze the influence of connect way between piles and beam; and the conclusion is obtained that the rigidity ratio between beam and piles being 0.48 is appropriate; the continuative increase of the rigidity ratio is not significant; the worst condition is that connecting way between piles and beam is hinged; the best condition is that connecting way between piles and beam is rigid. Whether is single-row pile or are double-row piles, when the front of single-row pile or the front of the front-row pile(in the double-row piles) needed excavation, it is supposed to that ought to be carefulness to excavate, because it is that the engineering cost increased greatly.

同时，用有限杆单元法，对双排桩的连梁刚度和用文中提出的方法以桩梁连接方式进行了试验和理论分析得出如下结论：在满足不相互影响排桩间距的情况下，桩顶连梁与桩的刚度比不小于0.48是合适的，此时再增加连梁刚度无意义；桩梁连接为铰结时双排桩受力变形性质最差，刚结时受力变形性质最好；不论是单排桩还是双排桩，桩前和前排桩桩前土体需要开挖时应慎重，因为这种开挖对支护结构影响很大，造价增加很多；双排桩省钱，而且抵抗变形的能力强，值得在工程中研究和广泛应用

Key words: special style foundation; diaphragm wall; bearing; retaining

关键 词：特殊形式的基础；地下连续墙；承重；支护

The main characteristic of shallow tunneling method is to fully utilize the bearing capability of wall rock itself; that is, provide support timely when it is constructed.

浅埋暗挖法的主要特点是要充分利用围岩的自承能力，即施工时适时施作支护。

As the "Hydraulic safety Closed Spring Loaded Low Lift Type-High Pressure Safety Valve valve," has two levels pressure relief function and pressure from low to high pressure limiting function; with limited pressure relief and anti-corrosion properties of good stability and reliability advantages of the patented product may greatly enhance and expand power systems and hydraulic equipment hydraulic mine support equipment, quality and performance.

由于&气动液压安全阀&具备二个级别卸压功能和从低到超高压力的限压功能；具备限压卸压稳定可靠和防腐性能好的优点，本专利产品可极大地提升和拓展液压动力系统和液压设备矿井支护设备的品质和性能。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。