Reaming equipment for anchoring system with multiple plates and construction method

Abstract

The invention relates to reaming equipment for an anchoring system with multiple plates and a construction method. The reaming equipment comprises a fixed plate used for being fixed at an anchor holeof the soil body, wherein a hollow pipe used for extending into the anchor hole is connected to the fixed plate, the rear side of the fixed plate is connected with a motor through a hydraulic cylinder, a main shaft of the motor is connected with a spiral soil cleaning rod penetrating through the hollow pipe, and the front end of the hollow pipe is provided with a hole expanding head which is driven by the spiral soil cleaning rod to rotate and controlled to expand and contract by the axial movement of the spiral soil cleaning rod. According to the reaming equipment for the anchoring system with the multiple plates, reaming is carried out by adopting a method of pressure-cutting-soil-transporting slag, the use is convenient and rapid, and the hole expanding effect is good; the reaming equipment can be used to ream the rock soil bodies with different conditions, whether the rock soil body is soft soil or high-compaction soil body, and the hole expanding effect is remarkable; and the structure design is compact and reasonable, the limited anchor hole space is not occupied, and the reaming efficiency is maximized.

Description

technical field [0001] The invention relates to hole reaming equipment and a construction method of a multi-branch anchorage system, belonging to the technical field of rock-soil anchorage engineering. Background technique [0002] In recent years, in the field of geotechnical engineering at home and abroad, there is a problem of the effective length of the anchorage section of the grouted anchor. By increasing the length of the anchorage section, the anchorage force cannot be effectively increased. Anchor, conical anchor, helical blade anchor and enlarged head anchor, etc. Therefore, it is an important measure to increase the bearing capacity of the anchor by enlarging the inner end of the anchor to increase the stress area. [0003] Reaming bolt support technology has been maturely used in soft soil foundation pit engineering, and has achieved good support effect. The reaming is to perform positioning and quantitative reaming according to the design requirements after th...

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Problems solved by technology

[0004] However, the anchor rod reaming equipment provided by the prior art is mainly aimed at soft soil areas, using the front hydraulic cylinder to push the telescopic arm to squeeze the soil to form a local enlarged body, but the reaming effect is not ideal for high-density soil layers, and cannot be formed. Multi-branch anchors, and the oil pipe of the front hydraulic cylinder is easy to occupy the limited anchor hole space

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