新型便携式防渗堵漏灌浆设备及其工程应用

New Portable Water-Proof and Leak Stoppage Grouting Equipment and Its Engineering Application

引黄入洛工程隧洞部分衬砌段需要进行防渗堵漏灌浆处理,由于隧洞埋深大、灌浆部位与地面灌浆设备距离长、防渗堵漏需要的灌浆量不大,因此常规的灌浆设备体型大、操作复杂,在此使用效率低、灌浆浪费大。为解决现有灌浆设备用于小范围、间隙式、少浆量防渗堵漏等灌浆施工的技术局限性,研发了便携式灌浆设备。该设备由加压接口、储浆筒、进料口、密封机构及出浆接口构成,通过动力源将加压气体注入密封储浆筒中形成高压气体,通过高压气体将储浆筒中的浆体注入缝隙或空隙进行封堵防渗。利用隧洞内的空压机等动力源作为高压空气源,直接在灌浆部位附近拌制灌浆液,可以进行单液、双液或多液灌浆,结构简单、体积小、质量轻、制作经济、操作简单,使用和维修成本低,可随意移动,已成功应用于隧洞工程的防水堵漏灌浆施工。工程实践表明,该灌浆设备能有效地降低施工成本,效率高、效果好,工程适用性很强,具有推广应用价值。

The grouting construction in lining segment of transferring water from the Yellow River into Luoyang tunnel must be done, while owing to that the tunnel is deep buried, the grouting site is long distance from grouting equipment on the ground and the grouting quantity is not large. The conventional grouting equipment has defects of too big equipment, complex operation, huge waste and lower efficiency, so in order to solve the limitation of existing grouting equipment when was used in a small grouting construction for leak stoppage or water-proof, the portable grouting equipment was developed, which was consisting of pressure interface, storage pulp cylinder, feed inlet, sealed mechanism and given pulp interface. It could be formed after the pressure gas was injected into sealed storage pulp cylinder through power source, and the slurry in sealed storage pulp cylinder could be grouted into and plug the leakage gap or interspace through the high pressure gas. By the grouting equipment, the power source in tunnel, such as air compressor, could be used as high air source, and the grouting slmTy could be mixed near the grouting site, and the new equipment could be used in single liquid grouting or double liquid grouting. The new equipment had the advantages of simple structure, small size, light weight, simple operation, making economy with lower using and maintenance cost and it could be freely moved. In deep tunnels, it also had been successfully applied in other tunnel grouting construction for water-proof and leak stoppage. The practice shows that the new developed equipment has higher grouting efficiency, better grouting effect and strong practicability and extensive application value.