【作者】 方怀霞；

【导师】 欧湘萍；

【作者基本信息】 武汉理工大学 ， 道路与铁道工程， 2005， 硕士

【摘要】 隧道是交通线上重要的组成部分。隧道涌水量是评价隧道充水条件复杂程度的主要标志,是制定隧道疏干排水设计的主要依据。做好隧道涌水量的预测工作,对隧道正确设计十分重要。常用计算隧道涌水量的方法,一般说来有理论公式法、数值计算法和经验公式法三大类。随着国民经济的飞速发展,海底隧道的建设也越来越多,隧道修建及运营过程中涌水地质灾害已成为勘测设计阶段需重点考虑的问题之一。而隧道可能涌水区段及涌水量大小的预测计算为这一问题关键之所在。同时这一问题也是国内外学者、专家长期致力的一项重大研究课题。 隧道涌水严重影响着围岩的稳定,威胁隧道安全。因此,防患于未然,在隧道施工前必须掌握和了解隧道沿线地段的地下水分布、水位、水量、补给、排泄等情况,对特殊地质地段的地下涌水作好预测,并作好技术处理应对措施。隧道涌水预测计算要贯穿于从勘测设计到施工这一整个过程,在施工阶段对设计阶段的计算成果,不断地进行反演修正,以完善隧道涌水预测的准确率,提高掌子面施工前方的涌水预报效果,更好的服务于施工。 拟建厦门东通道海底隧道工程位于厦门岛东北端的湖里区五通村与对岸同安区西滨村之间,方向北东NE50°,隧道全长约5.9km,其中海域段长约4.2km。东通道工程是厦门市公路骨干网规划中的重要组成部分,它的建成对厦门市经济发展、尤其是厦门市东部地区的经济发展将起到重要作用。同时,厦门东通道海底隧道工程是我国计划建设的第一条海底隧道。由于工程建设位于海底,透水岩体的补给水源为无限量,因此,查明隧道工程区的水文地质条件并研究隧道开挖涌水量是该工程建设中必须解决的重大工程地质问题。 根据现有水文地质资料和现场试验成果,进行裂隙介质岩体渗透系数等效化研究,查明工程岩体、裂隙(结构面)、深厚风化(槽)带的渗透性,利用公式法和数值法计算隧道开挖涌水量,作出隧道渗透破坏评价,为隧道施工提供理论依据。更多还原

【Abstract】 Tunnel is an important part of communication lines. Surge water amount of tunnel is the main mark of evaluating the complex degree of tunnel water filling condition, and the major basis of drainage design. Pre-estimating tunnel surge water amount is very important to the correct design of tunnel. Usual methods of computing tunnel surge water amount include: theoretical formula method, numerical method and empirical equation method. With the rapid development of national economy and massive construction of submarine tunnel, the geology disaster of surge water during construction and operation of tunnel has become an important problem considered during the reconnaissance design phase. And the pre-estimating of surge water zone and surge water amount is the key to this problem. At the same time, this problem is a grave research topic of domestic and foreign scholar and expert.The surge water seriously affects the stability of adjacent rock and the safety of tunnel. So we must grasp and understand the tunnel line condition of groundwater distribution, water height, water amount, supply and drainage, and pre-estimate the underground surge water of particular geology zone, and make technical measures. The pre-estimation of surge water must penetrate the whole process from reconnaissance design to construction. During the construction phase, continuously inverse correct the computation result of design phase, to perfect the accuracy rate of tunnel pre-estimation increase the surge water prediction effect of front palm plane, and serve the construction.Quasi-constructed Xiamen East Passage Submarine Tunnel Construction, NE50°in direction and about 5.9 kilometers in the whole length with about 4.2 kilometers’ sea area include, locates between the Wutong Village in Huli Region of northeast end of Xiamen Island and Xibin Village in Tong’an Region. East Passage Construction is the important element of Xiamen highway diaphysis networks planning, its built will play an important role in the economic development of Xiamen, especially the east part of Xiamen. Meanwhile, Xiamen Xiamen East Passage Submarine Tunnel is the first submarine tunnel of Chinaplanned to construct. For this construction is in the seabed, the supply water of pervious rock is infinite. So to check out the hydrogeologic condition of tunnel engineering area and to research the excavation surge water amount, is the grave engineering geological problem to be solved during the construction.According to the existing hydrogeologic data and field test result, study the equivalence of permeability coefficient of fracture dielectric rock, then check out the permeability of engineering rock, fracture(structural plane),and deep and thick weathering(groove) belt,computer the excavation surge water amount by formula method and numerical method, and then evaluate the seepage damage, to provide theoretical basis for tunnel construction.更多还原