DJM machine restructuring of high pressure jet grouting slurry formulation: water-cement ratio of water to determine the appropriate height and increase the amount of ash under the supervision of Engineer (1.2: 1 each addition of water-cement ratio 360kg, cement 300kg), and and marked on the mixer. The configuration process in strict accordance with the marked increase of gray water height and volume control, followed by sufficient mixing channel curtain seal program, formulated by a hydrometer to measure the density of the slurry pulp density control, so that each can stop a test small curtain water drilling rigs, by the person recording the water, ash and slurry density data before proceeding slurry feed to meet the requirements. Note: In between mortar mixer and set up a collection hopper filter, filter slurry. The prepared slurry can not isolated, the parking time: should be treated according to the waste slurry at the time when the temperature is above 10 ℃ over the following three hours or 10 ℃ more than five hours. DJM restructuring high pressure jet grouting machine shotcrete upgrade: When the curtain under the nozzle into the design depth Which is nice pile sealing should be done first place static spray shotcrete, cement slurry back out of the opening to be the case normal only after the start of the jet grouting upgrade