Laboratory experiment of multi-pile composite foundation of steel pipe column and sand column ;2. A set of apparatus of foundation physical model was developed and utilized to conduct model tests of sand column composite foundation.

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In the light of geological characteristics of Dongfang 1-1 Gas Field, mass indoor experiments are conducted and studied. Sand grain level are analyzed, the sand control parameters and screen pipe and blind pipe combination proportion is optimized. On this basis, the most suitable horizontal screen pipe sand control method for this gas field is found. Through the medium of DONGFANG 1—1 gas field field conduct proven, the sand control technology are completely run up to DONGFANG 1-1 gas field completion require.

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Resin sand renewable sets and mixer equipment; silicate sand equipment?

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In these regulations 'blasting process' means the cleaning, smoothing, roughening or removing of part of the surface of any substance or thing including granite, stone or brick by the use as an abrasive of a jet of sand, metal shot or grit or other material propelled by a blast of compressed air or steam or water or by a wheel.

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A set of apparatus of foundation physical model was developed and utilized to conduct model tests of sand column composite foundation. A number of features of sand column composite foundation were obtained, including the characteristics of load-settlement curve, stress of the column, stress between columns. column-soil stress ratio, and load-sharing ratio of column and soil.

通過(guò)自行研發(fā)的試驗(yàn)裝置操人免费网站，對(duì)砂樁群樁復(fù)合地基進(jìn)行室內(nèi)模型試驗(yàn)97爱爱，得出砂樁復(fù)合地基的一些工作性狀：砂樁復(fù)合地基的荷載沉降曲線特征、樁和土的應(yīng)力特點(diǎn)国产原创激情在线观看网站视频下载、樁土應(yīng)力比特點(diǎn)欧美高清不卡A片快爽、荷載分擔(dān)比曲線特征等。

Soil water characteristic curve was measured with a sand column for both drying and wetting processes, and the data were used to fit the van Genuchten model. The fitted curve is in good agreement with the actual measurements, residual water content and other factors used in the van Genuchten model were obtained. For the sand studied,. The results from this study may provide reference for research of water and solute movement in unsaturated soil.

利用Van Genuchten模型對(duì)用砂性漏斗測(cè)量中砂的吸濕過(guò)程和脫濕過(guò)程土壤水分特征曲線進(jìn)行擬合啪啪精品福利，結(jié)果表明實(shí)測(cè)曲線和擬合曲線吻合很好一级电影三级电影，并得出Van Genuchten模型中的殘余含水量、特性參數(shù)α和n超碰aⅴ人人做人人爽，模擬計(jì)算表明www.日韩.com，中砂有α=1.69α的關(guān)系，為研究水分和污染物在非飽和土壤中運(yùn)移問(wèn)題提供土壤水分運(yùn)動(dòng)鍵參數(shù)在线看高清无码免费www.。

The reservoirs in the eastern Kuqa depression are made up of three delta systems and coastal bar sand bodies, which are very thick and widely distributed.

庫(kù)車坳陷東部?jī)?chǔ)層主要由三種三角洲體系砂體和濱岸沙壩砂體構(gòu)成在线观看你懂的网站免费不卡，砂體厚度大亚洲男人综合天堂，分布廣，儲(chǔ)集條件好国产欧美日韩一区二区。

After abrasion of anti strapped bar pallet, drain plate, mud and sand are piled in Kelly bar and cause packing strapped bar, after drilling in thick mud sand, mud and sand have to be cleaned before storing Kelly bar (it is prohibited to drill in under this condition, but in fact, it always happened).

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Based on the deliberate analysis of microfacies, the authors set up the gentle-gradient braided river sedimentary model and the multi-channel and low-sinuosity meandering river sedimentary model, and think that the most favorable reservoir is overriding sand bodies of channel bar and point bar and channel bed sand bodies is sub-favorable reservoir.

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