唐山万达广场注浆减沉技术研究与应用

Study and Application on Grouting and Sedimentation Project of Wanda Plaza in Tangshan City

目前,注浆减沉是一种控制覆岩破坏的新技术,是国内外广泛研究和有待于进一步完善的技术手段。掌握覆岩破坏情况和发展方向,科学控制注浆时机、注浆压力,确定浆液在离层空间的流动分布规律等,是注浆减沉技术体系的关键前提。基于上述理论,在唐山万达广场,采取了注浆减沉措施,有效控制了因前期地下煤矿开采活动造成的地表建筑物和设施下沉变形。

At present, grouting is a new technology to control overburden damage,is widely studied at home and abroad and to be further improved technical means. Grasp the destruction of the overburden and development direction, scientific control of grouting time, grouting pressure ,to determine the slurry in the separation of the spatial distribution of the law,is the key prerequisite for slurry reduction technology system. Based on the above theory,in the Tangshan Wanda plaza,taken a grouting reduction measures, effective control of the early underground coal mining activities caused by surface structures and facilities subsidence deformation.