datum pressure 中文意思是什麼
datum pressure
解釋
基準壓力-
The in - situ testing includes surface deformations, sub - surface movements, earth pressures, pore water pressures, underground water levels, spt, stresses of pipes and pipe - soil contact stresses. in addition, the total jacking forces, deviations in line and level of the pipe line and earth pressures in the earth pressure balance machines ( epbm ) are also recorded. the results of field - testing are analyzed, and the variety of testing datum include earth pressures, pore water pressures and underground water levels during the course of the shield through it are studied
現場測試內容包括地面變形、深層土體變形、土壓力變化、孔隙水壓力變化、地下水位變化、土體標準貫入試驗、管道內力變化、管土接觸應力變化以及頂管施工現場記錄（包括頂力、土壓力、平面偏差、高程偏差等） 。 -
The mostly content in this paper include the law of the influence upon the effective stress coefficient worked by the holes configuration which comprise the holes rate and the hole distributing, and the law of the influence upon the effective stress coefficient worked by the cracks configuration in rock which comprise the amount of cracks and the cracks distributing. by numerical value experiment, the variety laws of the effective stress coefficient worked by the cracks distributing, by the fractal dimension and the initial value have been work out. by referring to the formerly physical experiment datum and conclusion, the thesis has studied the influence upon the effective stress coefficient worked by the outside pressure and the liquid press inside rock and sum - up the variety law of the effective stress coefficient with the outside pressure and the liquid press
本文的主要內容包括：巖體孔隙裂隙結構對有效應力系數的影響規律，即：一是孔隙率大小及分佈形態對有效應力系數的影響規律，二是裂隙的條數和分佈形態對有效應力系數的影響規律，並得出了裂隙的分形參數，即：分形維數和裂隙初值的變化對有效應力系數的影響的相關規律，同時也搞清了裂隙分佈形態對有效應力系數的影響規律；參照已有的物理試驗結果，分別研究了巖石所受的圍壓和孔隙流體壓力的變化對有效應力系數造成的影響，從細觀的角度揭示了有效應力系數隨二者的變化規律。 -
The pressure datum is an important means of researching the speciality of oil stratum, mastering its status and checking the process of oil extraction
它是研究油氣層特性、掌握油氣層動態、檢查地面採油工藝流程的重要手段。
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