深井巷道涌水渗流场-应力场演化与注浆封堵  

Water seepage field and stress field evolution and grouting seal in deep tunnel

作　　者：付英浩 江海 惠冰[2] 段昊 王惠敏 刘燕 

机构地区：[1]山东省建设工程勘察质量监督站,济南250001 [2]山东正元建设工程有限责任公司,济南250101 [3]山东大学岩土与结构工程研究中心,济南250061

出　　处：《工程勘察》2015年第4期38-43 55,55,共7页Geotechnical Investigation & Surveying

基　　金：国家自然科学基金面上项目(41272385);国家自然科学基金青年科学基金项目(51209128);山东局青年科技基金资助项目

摘　　要：为探讨深井巷道涌水渗流场-应力场演化。依托具体工程,选取深井巷道涌水区域,建立区域内渗流场-应力场耦合的地质力学模型。基于COMSOL有限元分析,研究深井巷道涌水区域渗流场与应力场变化特点。结果表明:巷道涌水区域形成一定范围内的降落漏斗,靠近降落漏斗处动水压力变化梯度较大,远离降落漏斗处水压力保持不变。在动水压力和高地应力的综合作用下,巷道顶板围岩变形量最大,且应力集中在顶板、底板位置,极易引起底板底臌现象。现场采用先引流泄压后浅层加固措施确保了浅层加固效果,合理控制深部引排钻孔,最后进行深部帷幕注浆有效封堵涌水通道。结合巷道顶板围岩变形实时监测并及时反馈,实现信息化施工,有效保证注浆过程中围岩稳定。并在工程实践中进行了应用,取得显著效果。In order to study the evolution of water gushing seepage field and stress field in tunnel of deep underground mine,Based on a project,choosing water bursting area in a tunnel of deep underground mine,seepage field-stress field coupling geomechanical model of this area is built. The change characteristics of seepage field and stress field of water gushing area in deep mine is studied. The result shows that,a cone of depression within the specific area of the laneway is formed,the water pressure changes greatly near the cone of depression area and remained constant in the area that far from the cone of depression. Under the combined action of hydrodynamic pressure and high ground stress,the largest deformation of surrounding rock appears near the tunnel roof,and stress concentrated in area near the roof and floor of roadway which would lead to the floor swelling easily. Relieving the water pressure by discharging,then improving the surface soil,appropriately controlling the deep holes,the water gushing is sealed effectively by deep grout curtain. Informative construction is implemented by realtime monitoring the deformations of the tunnel roof and feedback in time which effectively ensured the stabilization during grouting. These measures are applied in practice and proved workable.

关 键 词：深井巷道 渗流场-应力场演化 引流泄压 信息化施工 

分 类 号：TD745[矿业工程—矿井通风与安全]