RJP工法钻机的液压系统设计与应用

根据RJP工法的施工工艺，设计了XLT[CD*2]230型高压旋喷钻机的液压系统，主要有：动力头回转回路，能够实现正反转连续切换，满足RJP工法摆喷施工要求；动力头提升下降回路，能够实现动力头快速提升下降和慢速提升下降，实现间歇步进提升功能；钻机行走回路，要求行走稳定，不跑偏；辅助动作回路，保证辅助动作稳定可靠。现场施工试验表明，该钻机液压系统设计合理，可靠性高，系统节能效果好，完全能够满足RJP工法的施工要求。

Design and application of the hydraulic system of RJP construction drilling rig

In light of the construction process of the RJP method, the hydraulic system of XLT[CD*2]230 high-pressure rotary jet rig is designed to include the following main hydraulic circuits: the power head rotation circuit, which can realize continuous switching between forward and reverse rotation for swing jetting of RJP method; the power head lifting and lowering circuit, which can realize fast/slow lifting and lowering of the power head, and intermittent step-lifting function as well; the drilling rig travel circuit, which can provide for travel stability without deviation; and the auxiliary action circuit to ensure the stability and reliability of auxiliary action. The field construction test showed that the hydraulic system of the drilling rig is properly designed with high reliability and good energy-saving, fully meeting the construction requirements of RJP method.