Engaging precast pile cavity grouting construction technology

The invention provides an occluded precast pile cavity grouting construction process, which is used for grouting cavities formed by an occluded pile primary and secondary tenon structure to form a connected diaphragm wall, and comprises the following steps of: S1, driving precast piles, occluding to form an occluded precast pile wall, and forming inter-pile cavities by the primary and secondary tenon structure of the occluded precast pile wall; s2, debugging, preparing and testing grouting equipment, materials and parameters; s3, a crawler-type jet grouting anchor rod drilling machine is adopted for drilling, and the crawler-type jet grouting anchor rod drilling machine is matched with low-pressure cement slurry conveying of a high-pressure slurry S4, lifting the drill rod in a rotary spraying manner; and S5, grouting circulation of the next pile seam is conducted. The crawler-type jet grouting jumbolter is adopted for drilling and is matched with the high-pressure slurry pump for conveying cement slurry at l