2. tazhong ancient uplift originated from normal fault in paleozoic, hydrocarbon formed in ordovician period, structure reverse made tazhong uplift form from the middle ordovician period to the late ordovician period, and it provided geologic background for the deposit of silurian - devonian stratum. tazhong uplift formed at the end devonian, ancient reservoir was destroyed and asphaltum sandstone formed, structure deformation more destroyed ancient reservoir in early permian, after then the major of structure deformation is regulation
塔中隆起源於早古生代拉張背景下的正斷層,寒武-奧陶紀為其烴源巖形成的重要時期;早奧陶世末-晚奧陶世末的構造反轉是塔中隆起的主要形成期,同時也為志留系形成
地層及復合圈閉提供了古
地理背景;志留?泥盆紀塔里木盆
地南北緣均轉為活動大陸邊緣,形成了大量的斷裂和不整合;泥盆紀末塔中鼻狀隆起基本定型,古油藏遭受破壞,形成了瀝青
砂巖;早二疊世晚期的構造變形使古油藏遭受進一步的破壞;二疊紀后構造變動主要以調節為主。
Touke sandstone and shale stratum. this stratum has a very soft, loose structure, and this is why the badlands terrain is especially well developed here
左鎮鄉的
地層主要為頭?山層之
砂巖與頁巖所構成,由於
地質特別松軟,惡
地形也特別發達。
It is believed that a dry sandy terrain would be particularly conductive to base surge formation.
據信在干
砂地帶上特別容易形成基浪。
The water mains had numerous breaks, with the great majority of the breaks occuring in sand, silt, or filled ground.
自來水干線有許多處破裂,但絕大多數的破裂發生在
砂地,淤泥
地或回填土中。
Technical methods to improve well completion quality in fine slit sand stratum
提高粉細
砂地層成井質量的技術措施
Based on the direction of sources and the ratios of sandstone to formation of sedimentary rocks, together with the sedimentary structures and textures, paleocurrent direction and the characteristics of paleontology, etc., the planimetric maps of sedimentary facies of each stages in the studied area are compiled in order to recognized the extension of dominant facies and the evlotionary history of sedimentary environment, hi the stage of benxi and taiyuan, lagoon - tidal flat sediments are widespread in the area, and the deposits of estuary, lagoon and small delta in the northwest margin of ordos
以物源方向和沉積巖
砂地比值為基礎,結合沉積結構構造、古水流方向及古生物特徵等,編制了研究區各期次的沉積相平面圖,以識別優勢相展布和沉積環境演化。本溪期和太原期研究區瀉湖?潮坪沉積分佈廣泛,西北緣發育河口灣、瀉湖及小型三角洲沉積。
The papers and technical reports about the oil tank foundation treatment shows that in our country abundant experiences have been built up in dealing with the soft clay foundation, while there were few cases for sand foundation. analyzing the geological condition, the author proposed that the foundation soils at shuguang pump station belong to high - permeability sand layers
根據曙光泵站
地區的
地質條件,論文認為該區主要是一套以高透水性的
砂類土為主的
地層,粘性土層較薄且富夾薄層粉細
砂,
地基土的水平向與垂直向排水條件良好。
Study on well completion techniques and capacity of screen like qiao type in silt strata
粉
砂地層橋式濾水管的成井工藝與出水量研究
Based on four project cases of vibro casing cast - in - place pile in silty sand foundation, the liquefaction of sand and its consequent pile breaking are analyzed, and suggestions on how to adopt values of the design parameters of a single pile are presented
摘要以4個在粉
砂地基中均採用振動沉管灌注樁的工程為例,分析了施工中
砂土的液化及由此引起的斷樁,並對單樁設計參數的取值提出了建議。
Automobiles - sand ground test method
汽車.
砂地行駛試驗方法
On the basis of areal geological background, the distribution pattern of sedimentary microfacies in the chang - 6 oil - bearing beds was distinguished and the palaeogeographic environment was reconstructed by the analysis of geology facies, logging facies, stratum thickness, sandstone thickness and sandstone percent and other sedimentary characteristic. the method of digital sedimentary microfacies was applied in part of the research area for the first time, and acquired the satisfying effect. the digital sedimentary microfacies realized the description of the sedimentary evolution from chang - 62 to chang - 61
在區域沉積背景的墓礎上,結合
地質相特徵與測井相分析,對
地層厚度、
砂體厚度以及
砂地比(
砂巖含量)等在平面上的分佈規律進行了綜合分析,並結合沉積序列與沉積特徵等,判別了沉積微相在平面上的分佈格局,恢復出長6油層組各沉積期的古
地理環境。
Abstract : based on analyzing the mechanism of fraction for anti - extraction soil by using the results of in - side model test about wind - borned sand deposit foundation, three stressing process of the ultimate bearing capacity in soil is given, and the basic formual for anti - extraction capacily calculation is established. compared with other methods at present, the accuracy of the calculation result is several times over that of others. because the scope of application isn ' t limited by width - to - depth ratio, it is very convenient for widely application
文摘:利用風積
砂地基抗拔室內模型試驗資料,通過對抗拔土體破壞機理的全面分析,提出了土體形成極限承載力的三個受力過程,建立了擴展基礎抗拔承載力計算的基本公式,與目前其它計算方法比較,成果精度提高很多倍,而且適用范圍不受深寬比限制,便於推廣應用。
A discussion of the well completion technology in the fine and silty sand of the eastern henan province
淺議豫東地區粉細砂地層成井工藝