一、技术原理及工艺特点导杆式开槽机构筑地下连续墙技术是山东省水利科学研究院开发的建造防渗墙的新工法,采用铣削法开槽,灌注不同的材料形成不同类型的防渗墙。开槽系统由动力头、导杆、成槽器、泥浆泵组成,动力头通过内置于导杆内的钻杆提供扭矩给成槽器,带动多轴回转钻头切削地层,导杆定位给进,循环浆液护壁及排除钻渣。技术特点是机械传动故障低,成槽器开槽高效,槽型规则,地层适应性强;可连续开槽或分期开槽。可用于混凝土、固化灰浆、自凝灰浆防渗施工。与传统混凝土防渗墙施工工法相比,不需要宽大的施工平台和导墙,工程造价可降低20%以上;对 First, the principle of technology and process characteristics Guide bar slotting machine Construction of underground diaphragm wall technology is Shandong Province Institute of Hydraulic Engineering to develop cut-off wall of the new method, the use of milling groove, perfusion of different materials to form different types of defense Infiltration wall. The slotting system is composed of a power head, a guide rod, a groove forming device and a mud pump. The power head provides torque to the groove forming device through a drill pipe built into the guide rod, drives the multi-axis rotary bit to cut the ground, Circulating slurry wall and remove drilling residue. Technical features are low mechanical transmission failure, slotted slotted efficient, regular groove, strata adaptability; continuous slotting or slotted. Can be used for concrete, curing mortar, mortar anti-seepage construction. Compared with the traditional concrete cutoff wall construction method, does not require a large construction platform and guide wall, the project cost can be reduced by 20% or more;