外文翻譯--由隧道排水引起的地面反應(yīng)曲線(xiàn)-資料下載頁(yè)
2025-05-12 06:13本頁(yè)面
【導(dǎo)讀】Young-jinShin，Byoung-minKim，Shin-inHan，In-moLee，DaehyeonKim. 的穩(wěn)態(tài)地面反應(yīng)曲線(xiàn)力通過(guò)挖掘墻作用在隧道墻上。這種滲透壓力將大大?？v向變形曲線(xiàn)、地層反應(yīng)曲線(xiàn)和支撐特性曲線(xiàn)。當(dāng)隧道挖掘到地下水位以下時(shí)，地下水可能流入隧道。隧道的影響而影響到地面，隧道對(duì)地面的影響可以理解為符合收斂約束法理論的。這種方法是基于為控制隧道面位移而在隧道面設(shè)置支護(hù)結(jié)構(gòu)的原理。假設(shè)只產(chǎn)生縱向變形而沒(méi)有隧道橫斷面上垂直于隧道面的。位移，根據(jù)支護(hù)特性曲線(xiàn)描述，壓力隨著徑向位移的增大而增加。流壓力，以及滲流力可能會(huì)對(duì)地上反應(yīng)曲線(xiàn)有強(qiáng)烈的影響。Leeetal對(duì)地面反應(yīng)曲線(xiàn)做了簡(jiǎn)要分析。而，還沒(méi)有用數(shù)理解決的在滲流力影響下的反應(yīng)曲線(xiàn)。論研究方案誕生。須與彈性區(qū)域的徑向應(yīng)力相同。和塑性變形，并表示為Eqn。G為soil-mass的剪切模量;
【正文】 l displacement in the plastic region at the opening surface r =r0 is given by Eqn. (30). The ground reaction curve is estimated by using the theoretical solutions for the cases in which the cover depth of the tunnel, C , and water height, H , are 10 times the diameter of tunnel, D . As shown in Figure 5, the ground reaction curve with consideration of seepage force shows larger radial displacement than the ground reaction curve for the dry condition。 this result means that there is no ground water when the cover depth of the tunnel, C , is 10 times the diameter of the tunnel, D .This is due to the fact that even if the effective overburden pressure can be decreased by the arching effect during tunnel excavation, seepage forces still remain CONCLUSIONS The flow of groundwater has a significant effect on the radial displacement of a tunnel wall. While the effective overburden pressure is reduced slightly by the arching effect during tunnel excavation, seepage forces still remain. Therefore, the presence of groundwater induces larger radial displacements of the tunnel wall than those in the case of dry condition. ACKNOWLEDGMENTS This paper was supported by the Underground Space Construction Technology Center under the Ministry of Construction and Transportation in Korea (Grant C0401). REFERENCES Atkinson, . and Mair, . (1983). Loads on leaking and watertight tunnel lining, sewers and buried pipes due to groundwater. Geotechnique, Vol. 33(3): 341344. Brady, . and Brown, . (1993). “Rock mechanics for underground mining.”London。 Chapman and Hall. CarranzaTorres, C. (2020). Dimensionless Graphical Representation of the Exact Elastoplastic Solution of a Circular Tunnel in a MohrCoulomb Material Subject to Uniform Farfield Stresses. Rock Mechanics and Rock Engineering, Vol. 36(3):237253. Fernandez, G. and Alvarez, . (1994). Seepageinduced effective stresses and water pressures around pressure tunnels. J. Geotechnical Engineering, ( 1): 108128. Lee, ., Jung, ., Nam, . and Lee, . (2020). The influence of seepage forces on ground reaction curve of circular opening. Tunnelling and UndergroundSpace Technology, Vol. 21: 2838. Oreste, . (2020). Analysis of structural interaction in tunnels using the convergenceconfinement approach., Tunnelling and Underground Space Technology, Vol. 18: 347363. Schweiger, ., Pottler, . and Steiner H. (1991). Effect of seepage forces on the shotcrete lining of a large undersea cavern. Computer Method and Advances in Geomechanics, Beer, Booker amp。 Carter (eds), pp. 15031508. Sharan, . (2020). Elasticbrittleplastic analysis of circular openings in HoekBrown media. International J. of Rock Mechanics and Mining Sciences, Vol. 40:817824. Shin, ., Potts, . and Zdravkovic, L. (2020). The effect of porewater pressure on NATM tunnel lingings in deposed granite soil. Canadian Geotechnical J., Vol. 42: 15851599. Shin, ., Lee, . and Shin, . (2020). Seepaeinduced Stress due to Tunnelling under Drainage Condition., Canadian Geotechnical J., (Submitted). Stille, H., Holmberg, M. and Nord, G. (1989), Support of Weak Rock with Grouted Bolts and Shotcrete, International J. of Rock Mechanics and Mining Sciences amp。 Geomechanics Abstracts, Vol. 26, No. 1, pp. 99113
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