| 摘要 |
The invention finds application in the field of soil improvement processes and particularly relates to a process known as "jet grouting" in which a mixture of cement and water is injected in the soil under high pressure (above 200 bar). The process of this invention includes: a first simple drilling step using a downwardly advanced tool for exploration of the soil to be stabilized; a second soil precutting step across an area of the same size as the intended stabilization area, such precutting step being performed using a downwardly advanced tool and high pressure water and air jetting; a third grouting step by high pressure jetting of a mixture of cement or grouting material, using a tool which is moved upwards and outwards from the bottom; such third step is carried out while monitoring the material flowing out of the hole formed in the first drilling step.
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