【天津市聚強高壓泵有限公司向您推薦明星產(chǎn)品--高壓泵】
高壓柱塞泵包括高壓三柱塞泵:
此泵全部為臥式,它比立式更穩(wěn)、振動小、裝拆、維修方便。也叫三缸泵,具有均勻的流量,壓力脈動也相應(yīng)減小。
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軟基處理的方法:砂墊層法
設(shè)計 如采用機械施工,在確定砂墊層厚度時,應(yīng)考慮機械的重量,輪胎對地面接觸壓力,偏心程度及軟土地基表層強度等。表1為砂墊層標(biāo)準(zhǔn)厚度。
在極軟地基上,僅用砂墊層來確保大型施工機械的通行,往往需要較厚的砂墊層,是不經(jīng)濟的,所以常與表層排水或敷墊材料等法并用。
填土面積大且排水距離長,預(yù)計有多處地下水滲出時,若僅用山砂作砂墊層,不能獲得充分排水效果,應(yīng)采用設(shè)置盲溝,砂墊層內(nèi)的排水距離宜短不宜長。污泥處理
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液動沖擊器
學(xué)科:鉆探工程 詞目:液動沖擊器 英文:hydro-hammer,hydro-percussive hammer,down the-hole hammer(DTM) 釋文:又稱液動沖擊回轉(zhuǎn)鉆具、液動潛孔錘。以鉆探?jīng)_洗液為動力介質(zhì),利用高壓液流能量及動態(tài)水擊能量產(chǎn)生連續(xù)沖擊載荷的孔底動力機具。通常直接聯(lián)結(jié)在取心鉆具上部,在回轉(zhuǎn)鉆進的同時,將連續(xù)的沖擊載荷傳遞到取心鉆頭上,使鉆頭以回轉(zhuǎn)切削和沖擊兩種方式聯(lián)合破碎巖石。用于地質(zhì)巖心鉆探,特別適合在堅硬、破碎巖層以及中等硬度的粗粒不均質(zhì)巖層中應(yīng)用。液動沖擊回轉(zhuǎn)鉆進技術(shù)可以提高機械鉆速,延長回次進尺,減緩鉆孔彎曲。這是中國一項發(fā)明,國外也在研制大型的用于油井、地質(zhì)鉆探。
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