The specific characteristics of karst water in long and large tunnel , karat areas will be briefly introduced , and the roles of waterinflow and induced disasters will be summarized in this paper 文中简要介绍了岩溶地区长大隧道岩溶水的特殊性，分析了隧道涌水涌泥及地表塌陷等灾害发生的规律。
The conceptions of shear failure line and desiccation hole zone have been put forward definitely , then the construction technics causation have been confirmed to be the predominant factor which cause the failure of ground 明确提出剪切破坏线和失水空洞区的概念，确定出引发地表塌陷的主导因素为施工工艺原因。
In order to comprehensively and systematically study the mechanism of ground collapse , in this paper , from underground mining , dewatering , precipitation , moving groundwater and blasting vibration , the causes of ground collapse have been analyzed 为了全面系统地研究地表塌陷的形成机理，从地下开采、降水疏干、大气降水、地下动水和爆破震动等几个方面分析了引起地表塌陷的原因。
Face failure and ground subsidence caused by metro tunnel excavaton in weak watery stratum of shenzhen play an important role in metro construction because they influence the safety and time of construction and also lead to large loss of the whole project 摘要深圳富水软弱地层地铁隧道开挖中出现的工作面失稳及由此引起的地表塌陷是地铁安全施工中极其重要的方面，对施工安全、进度都有较大影响，同时也对整个工程造成巨大的经济损失。
Analysis result give some methods and technical measures of how to predict and prevent the failure of ground in scientific way to shenzhen metro phase and analogous underground engineering , and ensure the econmical benefit and construction safety of metro tunnel construction together 分析结果对深圳地铁期工程施工及类似地层条件地下工程施工提供科学预测、预防地表塌陷的方法和技术措施，达到地铁隧道施工中经济效益与安全施工的统一。
In view of local caving accidents happening easily in repeated mining process under special geological condition , on the basis of surface subsidence rule of steep coal seam mining and the occurrence of local caving accidents in the same coal seam in the coalmine of majiagou of kailuan , some important conclusions of determination of local caving rule in steep coal seam repeated mining and safe mining height are obtained through analysis 针对复采过程中，特殊的地质条件下，易发生抽冒事故的此问题，以开滦马家沟矿急倾斜煤层开采地表塌陷规律及井下同一煤层开采时发生的抽冒事故为现实依据，经过分析总结，得出了急倾斜煤层开采时复采抽冒规律及上部复采与下部正常开采的安全距离等重要结论。
The geological conditions are very complicated in hejiazhai tunnel which is located in guizhou shuibo railway , this tunnel is named " mashed tunnel " with the most difficult geological conditions such as the high dense gas and developed karst and gushing water assembled together , the geological hazards like the gushing water and sand , the collapse of tunnel , surface subsidence and slide , cracking of tunnel lining were often happened during construction period 摘要贵州水柏铁路何家寨隧道，工程地质条件极其复杂，集“高瓦斯、强岩溶、大涌水”为一体，施工期间曾发生多次涌水涌砂、洞内坍方、地表塌陷与滑坡、支护衬砌开裂变形等地质灾害，堪称水柏铁路施工难度最大的“烂洞子” 。
By face failure and ground subsidence investigation and in - suit monitoring analysis in some lots of shenzhen metro phase line , especially of lot 3a in which two large ground landlides have occurred in construction , the reasons of ground subsidence are expatiated respectively from three aspects , including the characters of the physical mechanical parameters of stratum above tunnel , the monitoring analysis of stratum deformation and contruction technics causation 通过对深圳地铁期工程土建施工中全线部分暗挖标段出现的工作面失稳、地表塌陷工程实践和现场监测结果分析，特别着重对连续2次出现地表塌陷的3a标暗挖隧道研究，从隧道上覆地层物理力学性质参数、地层变形监测分析及施工工艺原因3方面阐述了地表塌陷的原因。
Whether the geleshan tunnel ' s lots of water invasion during construction period brings about surround ground water or underground water drying , threatens sixty thousands persons and two hundreds enterprises " existence , and more leads vegetation to regress , or brings about ground ' s collapse , etc . is the necessary problem should be considered during the tunnel construction 因此，歌乐山隧道在施工期间是否会由于隧道大量涌水，导致周围地表水、地下水的疏干，威胁到山上6万多居民和200多家企事业单位的生产生活。进而可能造成地表植被退化，甚至引起地表塌陷等多方面的负面影响，是隧道施工中必须考虑的问题。
