【作者】 商霖； 崔江余； 卢光照； 邵军尧； 郭朝辉； 马志涛； 李洋； 刘丽；

【Author】 SHANG Lin;CUI Jiangyu;LU Guangzhao;SHAO Junyao;GUO Chaohui;MA Zhitao;LI Yang;LIU Li;Hexing Railway Co.,Ltd.;Beijing Jiaotong University;Hebei Construction Investment Transportation Investment Co.,Ltd.;Xingtai Project Management Department of Beijing Bureau Group Co.,Ltd.;

【机构】 和邢铁路有限责任公司； 北京交通大学； 河北建投交通投资有限责任公司； 中国铁路北京局集团有限公司邢台工程项目管理部；

【摘要】 涌水突泥对隧道施工有较大的危害。依托天河山隧道项目,采用室内模型试验对隧洞穿越不同倾角富水破碎带时隧洞压力和变形进行研究。首先,在水压差在0.5m条件下,确定较小水压对隧洞压力和变形的影响特征规律;然后在相同的水压条件下,研究不同倾角富水破碎带对隧洞围岩压力和变形的影响特征,试验结果表明:①0.5m水压差对隧道顶部位置沉降变形影响不明显,但水头高的围岩竖向应力和水平向应力大;②倾角为破碎带的隧道顶部沉降量大于倾角为破碎带的拱顶沉降,隧道穿过倾角为破碎带的岩竖向应力和水平向应力大于倾角为破碎带;③隧道穿过倾角为富水断层破碎带时出现涌水突泥的时间比穿过倾角为富水断层破碎带的时间早,发生涌水突泥的风险系数更高。更多还原

【Abstract】 Water and mud gushings have greater harm to tunnel construction.T Relying on the Tianhe Mountain Tunnel Project,indoor model tests are used to study the tunnel pressure and deformation when the tunnel passes through the waterrich fracture zone with different inclination angles.First,under the condition that the water pressure difference is 0.5 m,determine the characteristic law of the influence of smaller water pressure on the pressure and deformation of the tunnel.Then,under the same water pressure,study the pressure and deformation of the tunnel surrounding rock by the water-rich fracture zone with different inclination angles impact characteristics.The test results show that:①The 0.5 m water pressure difference has no obvious effect on the settlement and deformation of the top of the tunnel,but the vertical and horizontal stresses of surrounding rock with high water head are large.②The vertical and horizontal stresses of the rock with the inclination angle of the fracture zone are greater than the inclination angle,which is the fracture zone.③When the tunnel passes through the water-rich fault fracture zone,the time for water gushing and mud bursting is more than The time of the water-rich fault fracture zone is early,and the risk coefficient of water inrush and mud inrush is higher.更多还原