Based upon analysis and calculation of steel headframe and foundation reinforcement scheme is proposed.

結(jié)合工程概況国产欧美日韩免费影片在线观看，針對原有鋼井架已不能滿足使用要求的問題色哟哟在线看，對煤礦提升系統(tǒng)進(jìn)行了技術(shù)改造视色在线，對鋼井架及基礎(chǔ)進(jìn)行了分析和計(jì)算一级黄色一级黄色一级黄色一级黄色a级毛片，并提出了加固方案黄色视频你们懂的，加固后效果良好亚洲熟妇AⅤ无码一区二区，可為類似工程提供參考。

The safety of a main well headframe would be reduced significantly,due to increased loading capacity and higher vibration frequency in a coalmine.

由于煤礦主井井架提升能力的增加亚洲强奸视频在线观看，引起井架桿件受力增大日本在线播放www，受迫振動(dòng)頻率增大，導(dǎo)致安全性能降低干中文字幕。

A finite element model using the structural analysis software,SAP2000,was created to study the headframe's natural vibration characteristics and the state of member forces.

應(yīng)用SAP2000有限元軟件性爱黄视频，建立三維有限元模型，對其自振特性和加固前后的桿件應(yīng)力進(jìn)行了對比分析色色色77，加固后桿件最大應(yīng)力大大降低纯黄三级片尤物；通過加固前后不同荷載下的動(dòng)力測試，對加固后井架的運(yùn)行狀況作出評估與分析黄片免费在线看吗，在原提升荷載和新提升荷載下国产自愉怕一区二区，井架工作時(shí)平均振動(dòng)頻率都有很大幅度的減小。

With the rise in steel derrick base is the top steel headframe supporting steel degree 7.5m, surrounded by four inclined support beams and radiation into space structure.

內(nèi)鋼圈即為隨升井架底座女人张开腿让男人桶到爽，上面配角鋼井架日韩一区二区图片在线观看，鋼度為7.5m ，四周用四根斜支撐與輻射梁聯(lián)結(jié)成空間結(jié)構(gòu)又黄又湿又免费的视频网站。

King-sized lifting sling is the high load component in the procedue of lifting weighing 2 395 kg.

特大型井架起吊索具是井架起吊過程中高負(fù)荷的構(gòu)件a一级a片网站，起吊索具單件重量2 395 kg，其加工質(zhì)量可直接影響到井架的豎立欧美日韩激情在线看片亚洲。

This article elaborated an experimental system for acquiring this coefficient. The dynamic amplificatory coefficient of derricks in use can be acquired through collecting and calculating the signal of this system, so that it can provide the critical data for inspecting the loading capacity of offshore derricks.

主要介紹了一種獲得海洋鉆機(jī)井架動(dòng)力放大系數(shù)的試驗(yàn)系統(tǒng)国产69a片免费看，利用該系統(tǒng)采集的信號，通過計(jì)算獲得在役井架的動(dòng)力放大系數(shù)a在线免费观看视频，從而為海洋鉆機(jī)井架的承載能力的計(jì)算提供了關(guān)鍵數(shù)據(jù)欧美视频97色伦影院。

One of the rig crew members who gets his name from the fact that he works on a platform attached to the derrick or mast, typically 85 ft [26 m] above the rig floor, during trips.

鉆井隊(duì)的成員之一，井架工名字的由來起源于起下鉆時(shí)他工作在與井架或桅式井架連接在一起的一般距離鉆機(jī)平臺(tái)有85英尺高的平臺(tái)上国产精品狼友网站视频。

On the basis of wide investigation and research on oil derricks, combined with the practical use of oil derricks on the spot, a comprehensive statement is made in this paper about the basic conditions, the structural features and its practical uses of oil derricks on the spot, a comprehensive statement is made in this paper about the basic conditions, the structural features of oil derricks and its practical use.

本文的主要內(nèi)容可以歸納為：(1)一级特黄破除免费视频大全、本文在對石油井架進(jìn)行廣泛調(diào)研的基礎(chǔ)上，結(jié)合石油井架在現(xiàn)場使用的實(shí)際真实国产激情在线观看网站免费视频，對石油井架的基本情況男人的天堂一级毛片、石油井架的結(jié)構(gòu)特點(diǎn)以及石油井架在油田生產(chǎn)中使用的實(shí)際進(jìn)行了綜合的論述。提出了有關(guān)石油井架承載能力評定的理論和實(shí)際的方法一级特黄AAAA爱片。

Within definite height limits, such headframes not only take the place of steel headframes with great saving in steel and builting cost, but also eliminates the detrimental effects incidental to foundation settlement, the common defect of other ty-pes of r.c.

這種類型井架在某種高度下不僅可以代替鋼井架工作国产jizzzxxxx，使鋼材得到大量節(jié)約免费看AA发在线观看，建筑投資少91精品国产入口，而且它也克服了其他類型鋼筋混凝土井架在軟地基上易于產(chǎn)生不均勻沉陷影響的缺點(diǎn)。

But this method tums out of to convincingly reliable due to the effects of local member state of the derrick, on the other hand, the ultimate strength of structures usually tend to remain beyond linear elastic stage according to the geometric and material non-linearity.

目前国产麻豆乱伦性爱视频，人們需要對大量處于服役狀態(tài)的井架結(jié)構(gòu)的安全性重新進(jìn)行評定黄色网站午夜看，最常見的方法是通過現(xiàn)場測試井架應(yīng)力午夜好爽好舒服免费视频，來線性外推出井架的承載能力。

headframe：井架

{們g}10井架(headframe)建在豎井或抖井井口上的高架礦山構(gòu)筑物. 用它安裝礦井提升天輪和導(dǎo)向輪,其斗或翻轉(zhuǎn)摧籠和雄道以及卸料彎道. 井架分開采井架av性爱在线观看国产、掘進(jìn)井架和開采掘進(jìn)兼用井架三種. 掘進(jìn)井架與開采井架的區(qū)別.在于它不僅用來提升容器,

steel headframe：鋼井架

steel head 鋼井架 | steel headframe 鋼井架 | steel lagging 鋼背板

headgear：井架

headframe 井架 | headgear 井架 | heading 追

jackknife rig：帶折疊井架的鉆機(jī)

jackknife mast 折疊式輕便井架 | jackknife rig 帶折疊井架的鉆機(jī) | jackknife 折刀;折疊式的;折疊式井架

jackknife mast：折疊式輕便井架

jackknife derrick 折疊式井架 | jackknife mast 折疊式輕便井架 | jackknife rig 帶折疊井架的鉆機(jī)

jackknife derrick：折疊式井架

jackknife cantilever mast 折疊懸臂式井架 | jackknife derrick 折疊式井架 | jackknife mast 折疊式輕便井架

pecker neck：井架安裝工;安裝井架扳手

pecked line 點(diǎn)線 | pecker neck 井架安裝工;安裝井架扳手 | pecker 吸木鳥;替續(xù)板;穿孔器

derrick retracting：縮回井架

起井架 derrick raising | 縮回井架 derrick retracting | 井架底梁 derrick sill

derrick or mast：井架或便攜式井架

take ...into consideration 考慮 | derrick or mast 井架或便攜式井架 | crown block 天車

derrick erecting truck：井架安裝車

井架安裝||derrick installation | 井架安裝車||derrick erecting truck | 井架繃?yán)K||"derrick guy, guy line"