Churning Pile Churning three-tube method, in order to prevent Churning Pile Because when two adjacent pile too close or too short interval of time, resulting in high orifices adjacent construction string syrup, taken in batches jump hole Shi for anchoring jet grouting rig, drilling piles spaced every two holes for Oxfam, the envelope inside the pile in sequence and construction, Fengtai jet grouting rig, concrete construction sequence is determined based on the actual situation. Churning three-tube method, should be sent to the high-pressure water, sending mud and water, compressed air; the first injection should reach a predetermined pressure injection amount after spraying, and then gradually increase the grouting pipe, grouting tube segments to enhance ride then the length of not less than 100mm; when it reaches design pile height or ground underflow slurry phenomenon, should immediately stop the work of the current Jet piles, jet grouting rig track and pull rotating nozzle and clean lines. Triple tube method is to slurry injection with compressed air at the same time, except to extend the spray distance, increase cutting ability, but also to promote the exclusion of Wasteland, plus solid weight per unit volume. Multi-function multi-function rig drilling rig for a variety of formations (soil, clay, sand layers, rock layers, aquifers) directly or circulation drilling. Rig loaded hydraulic impact hammer or DTH impact can be broken rock into the hole operations, meet the liquid discharge, underground micro pile, bolt and cable, geological exploration, geothermal into the hole, foundation reinforcement, slope and other supporting infrastructure construction requirements. After spraying device can be realized with Jet construction method of construction, the tunnel can also explore the pre-construction lead Forepoling and geology. Currently, multi-rig construction projects in our citizens excavation, slope, and other mine tunnel anchor bolt supporting the most widely used.