In the construction of large-diameter pile foundation projects for wharves in deep water ports, some steel pipe piles driven into the geological overburden cannot meet the design requirements due to the thickness of the geological layer, especially when the pull-out ability of some inclined steel pipe piles is insufficient. The medium and slight weathered rock layer below the bottom of the steel pipe pile is drilled (anchor hole, generally Φ170mm), anchor rods (generally 3-6 bundles/pile) are installed, and cement slurry is injected; the upper part of the anchor rod is poured into the pile The concrete is tightly bound and combined to achieve an anchoring effect. The full name is "anchored rock-socketed pile" (anchored rock pile), which is often mixed with bored piles or rock-socketed piles in the pile foundation of the wharf. Therefore, in port engineering, "anchored rock piles" belong to the category of "port engineering rock-socketed piles". The construction of "anchored rock piles" has its particularities and many construction techniques and processes that are different from "bored piles" and "rock-socketed piles". Our company has long been engaged in the construction of pile foundations for large-scale port terminals in deep-water ports along the coasts of Jiangsu, Zhejiang and Shanghai and various islands, and undertaking the construction of "Yangshan Deepwater Port" and "Ningbo Port---Zhenhai Port Area, Beilun Port Area, Chuanshan Port Area" and "Ningbo --Part of the anchor rock pile construction tasks have been completed to varying degrees in the pile foundation construction of wharfs such as "multiple islands in Zhoushan Port Area". Among them, the completed anchor rock piles include: pile foundation diameter Φ 1200mm～Φ 1500mm～Φ 1800mm ～Φ Straight piles of 2000mm～Φ 2300mm～Φ2500mm and inclined piles with different torsion angles and different inclinations (most of which are inclined piles) anchored rock piles; designed anchor rods into the micro-chemical rock ranging from 4m to 10.5m; and single pile design settings 3, 4, 5, 6 3×Φ40mm anchor rods (anchor bundles). We have accumulated rich experience in the completion of various types of "anchored rock piles" with different diameters and technical requirements. In order to adapt to the design and application of anchored rock piles in hydraulic wharf pile foundation projects, our company has specially added 6 XU-1000 drilling rigs (see the upper left photo), and each drilling rig is equipped with 110m drill rods and various types Drilling tool.

     The main performance and technical indicators of XU-1000 drilling rig:

     Drilling diameter: 1200 (mm); Drilling depth: 100 (m);

     Drilling angle: 0~120o; Maximum torque: 3.7 (KN?m);

     Vertical shaft speed: 109, 155, 275, 375, 500, 610, 620 (r/min);

     Reversal of vertical shaft: 80 (r/min); Maximum lifting capacity of vertical shaft: 120 (KN);

     Vertical axis stroke: 500 (mm); Maximum vertical axis pressure: 80 (KN);

     Single rope lifting: 30 (KN); slag discharge method: gas lift reverse circulation;

     Rig quality: 2100 (Kg); Slag discharge method: gas lift reverse circulation;

     Note: The configuration of main auxiliary machinery for rock anchor pile construction

     1. 3PNL (4PN) mud pump (slurry circulation)

     2. QY-25-26-3A submersible pump (water or slurry circulation)

     3. BW160- BW250 grouting pump (infused cement paste) 4. Hole cleaning equipment (including air compressor, slag remover, air pipe, etc.)