無壓地下水 的英文怎麼說
中文拼音 [wúyādexiàshuǐ]
無壓地下水
英文
free ground-water-
The finite element analysis of 3d seepage field for surrounding rock mass of cavern groups of underground powerhouses was performed based on the nodal virtual flux method for solving the non - pressure seepage field and the improved drainage substructure technique for accurately simulating the complex seepage behaviors of densely distributed drainage holes, with emphasis placed on the seepage properties of the anti - seepage concrete curtain and drainage curtain in the anti - seepage and drainage system
摘要在求解無壓滲流場結點虛流量法的基礎上,結合可精細模擬密集排水孔復雜滲流水力行為的改進排水子結構技術,付某地下廠房廠區洞室群圍巖區三維滲流場進行了有限元求解分析,著重研究了防滲排水系統中的帷幕和排水幕的滲流特性。Depending on how the ground surface is denuded, the feature of the current crustal stress field and rock stress environment can be calculated analyzing the result in this paper : by analyzing the recovering feature of the elastic deformation of the rockmass in unload - stage under various pressures, it has been found there is close relationship between the recovering degree of the elastic deformation of the rockmass and the unloading degree of the pressure the direction of the major principal stress in the crustal stress field is not consistent with the direction of the crushing stress regional tectonics borne during the last tectonic movement. the evolving degree of the regional geomorphology evidently affects the current crustal stress field, which changes from the self - weight stress field to the horizontal stress field, with the changing of the eroding degree of the regional geomorphology ranging from valley area to hilly country to flat country. in valley area, where there is two stress belts, the bankslope s tress belt and the self - weight stress belt within the mountain. the direction of the major principal stress is nearly parallel to the ground surface and inclines towards the valley in the bankslope stress belt. it is nearly vertical in the self - weight stress belt
通過本文的研究成果,根據區域性地貌的演化特徵,我們可以大致地對現今地應力場進行判斷:在分級卸荷條件下,巖體中彈性變形的恢復具有明顯的規律性,這種規律對于研究地應力場的演變是有幫助的;地應力場中最大主應力方向與區域構造形跡在最近的構造運動中所受區域性擠壓應力的方向無明顯的對應性;區域性地貌形態的演化程度對現今地應力場的特徵具明顯的影響,隨著區域性地貌侵蝕程度由峽谷區、丘陵區、平原區的變化,現今地應力場特徵由自重應力場、水平應力場為主含少量自重應力場特徵向水平應力場的規律變化;在峽谷區,山體中具有兩個應力帶:自重應力帶和卸荷應力帶,最大主應力方向在卸荷應力帶中近平行於坡面並傾向于河谷、在自重應力帶中近於直立;根據原始地面遭剝蝕的程度,可以大致地估算最大主應力和中間主應力的量值和方向;在丘陵區和平原區,最大主應力的方向近於水平,並與附近區域性侵蝕盆地和河流的展布方向基本平行,根據原始地面遭剝蝕的程度,可以大致估算其最大主應力的量值;根據區域性地貌形態的特徵來分析工程區的現今地應力場特徵,並進而大致了解巖石的應力環境,這種分析方法得出的結論與許多實際的地應力測試成果基本一致,對于大型水電工程地下廠房和壓力隧洞的設計是有所幫助的。Plastics piping systems for renovation of underground non - pressure drainage and sewerage networks - part 2 : lining with continuous pipes
地下無壓排水和污水管線翻新用塑料管道系統.第2部分:連接管道用內襯To avoid the pollution of groundwater resource and adjacent environment caused by drainage pipe leakage, current criterion in our country stipulates that there must be a pressurization test before drainage pipes are used
為防止污水管道滲漏而導致污水外滲污染地下水資源和周邊的環境,我國現行的規范規定,無壓管道在竣工交付使用之前必須進行管道的嚴密性試驗。After a comprehensive review of our nation ' s debt level, the author hold a opinion that our deficit level is much lower than the critical proportion of our financial deficit to the gdp. and when compared with other countries, it is also at a low level, thus the pressure coming from fiscal deficit is within the financial capacity. besides, no matter taking government overall debts ( includes treasury bonds, overseas liabilities, non - performing assets of financial agencies, endowment insurance debts ) or just treasury bonds into account, we can reach such a conclusion : our debt level is lower than many countries, therefore, there are wide spaces to implement the active fiscal policy
通過考察我國的債務水平,筆者認為,我國的赤字規模,遠低於臨界赤字率,與國際相比,也處在低水平上,財政赤字的壓力在財政承受能力之內;另外,無論是單純從內債還是從包括國債、外債、金融機構不良資產、養老保險欠賬的政府綜合債務來考慮,都可以做出如下判斷:我國的負債水平低於許多國家,實行積極財政政策還有較大的餘地。Moisture, the voids and the density of the pavement are expected for many operators in the road department. in order to promote the application of gpr to detect pavement quality as quickly as possible, in this paper some research works were zone. the mainly research results includes the following aspects : ( 1 ) since the dielectric constants of pavement medium have important influence on radar detection results, dielectric properties of pavement layers materials are analyzed for the design of practical gpr system and field application
目前探地雷達在公路上的應用還主要局限於路面結構層厚度的檢測,對路基路面物理力學指標的無損檢測被廣大公路工作者寄予厚望,這一技術的應用還有很多的工作要做,為了使其早日應用於實際,實現探地雷達對路面含水量、空隙率和壓實度的快速無損檢測,本文具體做了以下的一些工作: ( 1 )鑒于介電常數對探地雷達檢測的重要影響,對路面結構材料的介電特性進行深入分析,為路用探地雷達的實際應用測量提供理論依據。Plastics piping systems for renovation of underground non - pressure drainage and sewerage networks - lining with close fit pipes
地下無壓排水管網和污水管網翻新用塑料管道系統.緊密配合管加襯A process for preparing m - dichlorobenzene by atmospheric selective transfer reaction of p - dichlorobenzene in the presence of alcl3 and h2o is described. effect of selectivity of the reaction is discussed. the best technological conditions are determined
闡述了常壓下對二氯苯在催化劑無水三氯化鋁及助催化劑水的存在下發生轉位反應,高選擇地制取間二氯苯的工藝過程;討論了影響產物選擇性的有關因素,確定出適宜的工藝條件。Plastics piping systems for renovation of underground non - pressure drainage and sewerage networks - general
地下無壓排水管網和污水管網翻新用塑料管道系統.總則Plastics piping systems for renovation of underground non - pressure drainage and sewerage networks - lining with cured - in - place pipes
地下無壓排水管網和污水管網翻新用塑料管道系統.現場加工管襯里Zhangjiagang zhongtian precision molding co., ltd. a civilian enterprise, specializes in molds for plastic products, hardware, precision diecasting, injection molding, etc. it ' s located in zhangjiagang city, an industrial city near port in the lower reaches of china ' s “ gold waterway ” of yangtze river. zhangjiagang enjoys extremely convenient transportation both in water and land, with shanghai to the nearest, bounded with the yangtze river in the north with nantong port on the other bank, adjacent to suzhou and wuxi in the south
張家港中天精密模塑有限公司是一家以生產塑料製品、五金製品、精密壓鑄、注塑模具的民營企業,公司地處中國「黃金水道」長江下游的港口工業城市?張家港市,東臨上海,北依長江,與南通港相對,南與蘇州、無錫接壤,水陸交通十分便利。In order to study effects of various factors on gas well productivity, this paper takes changqing gas field as an example and uses gas reservoir engineering and numerical simulation methods to qualify effect of different factors on absolute open - flow capacity in different reservoirs in respect of formation coefficient, water production, non - darcy flow coefficient, formation pressure and skin factor
摘要影響氣井產能的因素多種多樣,為了具體描述各因素對產能的影響,以長慶氣田為例,利用氣藏工程和數值模擬方法,從地層系數、產水、非達西流系數、地層壓力、表皮系數等幾個方面定量分析了各因素對不同儲層條件下氣井絕對無阻流量的影響程度。The results show that ( 1 ) the unconsolidated confined aquifer plays a crucial role in load transfer because of its fluidity and replenishment in time, making the loads of overburden soil evenly transfer into the bedrock through the unconsolidated confined aquifer and the load keep constant during the excavation process ; ( 2 ) under the condition without unconsolidated confined aquifer, the load on the bedrock will be reduced sharply during the excavation
研究結果表明:鬆散承壓含水層條件下,由於承壓水的流動性和補給作用,上覆表土層的載荷通過鬆散承壓含水層均勻地作用於下部基巖上,開挖過程中基巖頂界面上的載荷基本保持恆定,鬆散承壓含水層起到均勻傳遞載荷的作用;無鬆散承壓含水層時,作用在基巖頂界面上的表土層載荷隨煤層開挖而顯著降低。In harsh climate region, mere exists obvious local stress concentration near the upstream and downstream of the exposed - in - winter horizontal surface of the rcc dam, and the surface of spillway bucket though heat insulation is applied on the surfaces, tensile stress still exceeds the allowable one of concrete. this paper puts forward to adopt preset crack to avoid occurring more cracks. the special crack model is applied to simulate the dam preset crack, and the joint model of fracture mechanics is induced into strain - soften model
在結構措施方面,針對嚴寒地區高碾壓混凝土重力壩壩體越冬層面的上、下游面附近及溢流壩堰面反弧段表面有明顯的局部應力集中象現,在已採取一定的表面保溫防護的條件下,拉應力仍然超過混凝土容許拉應力,開裂難以避免,進而提出設置碾壓混凝土壩表面預留縫結構措施並對該措施進行深入研究,包括預留縫的擴展穩定和壩體沿預留縫的穩定性,以避免大壩在無措施部位開裂,解決大壩越冬層面水平施工縫的開裂問題。The influence of retarder on the seaing time and ultimate strength of gypsum plaster was investigated in this paper. the experimental results indicate that the effect of single retarder, such as citric acid, is inferior to that of composite retarder which was made of blending citric acid with a few portland cement ( about 0. 5 ?, by weight ). the effect of different water - retention agents, such as polyvinyl alcohol ( pva ), carboxymethyl cellulose ( cmc ), and na - bentonite, etc., was also studied, and the results demonstrate that by means of adding organic and inorganic water - retention agent simultaneously the water - retention of plastering slurry can obviously be improved. the optimal mix proportion of gypsum plaster suitable to finish coat of walls and ceilings of buildings has been got by use of factorial experiment with orthogonal array accounting for interactions between factors each other
研究了分別以檸檬酸、檸檬酸與普通硅酸鹽水泥復合物作緩凝劑,調節粉刷石膏的凝結時間,並對比2種緩凝體系對石膏抗折、抗壓強度的影響.比較不同保水劑(聚乙烯醇、羧甲基纖維素)以及相同量的保水劑在不同工藝流程下保水效果上的區別.探索了有機保水劑和無機保水劑對粉刷石膏的保水性的影響.結果表明,檸檬酸與普通硅酸鹽水泥的復合緩凝劑比單純的檸檬酸更能有效地延緩建築石膏的凝結,同時建築石膏的抗折、抗壓強度降低幅度減小Pvc - u. 1 : plastics piping systems for non - pressure underground drainage and sewerage - unplasticized poly vinyl chloride, polypropylene and polyethylene - specifications for ancillary fittings including shallow inspection chambers
無壓力地下排水和排污用塑料管道系統.未增塑聚氯乙烯Pvc - u. 1 : plastics piping systems for non - pressure underground drainage and sewerage - unplasticized poly vinyl chloride, polypropylene and polyethylene - part 1 : specifications for ancillary fittings including shallow inspection chambers
無壓力地下排水和排污用塑料管道系統.未增塑聚氯乙烯5 ) the velocity of the compressive and shear wave for the samples saturated completely by brine increases with the increasing of confining pressure ( with the constant pore pressure ), but poisson ' s ratio decreases. 6 ) some interior factors, such as the composition of rock, porosity, density and so on
5 )在完全飽和水、溫度和孔隙壓力不變的條件下,無論是縱波、橫波1還是橫波2 ,珠江口盆地第三系砂巖、粉砂巖、碳酸鹽巖及其過渡性巖石類型的速度均隨圍壓的增大而增加;大多數情況下,泊松比隨圍壓的增加而降低。分享友人