Crushing and slag removing device for hard soil layer at open caisson cutting edge and construction method thereof

Abstract

The invention discloses a crushing and slag removing device for a hard soil layer at an open caisson cutting edge and a construction method of the device. The device comprises a rotating portion, a reamer frame, a hydraulic system, a control unit, various sensors, a detector and a controller. The reamer frame is fixed below the rotating portion, the bottom end of the reamer frame is detachably connected with a reamer head, the hydraulic system drives the rotating portion and the reamer frame to move, the control unit comprises an antenna arranged above the rotating portion, the various sensorsare respectively arranged on the reamer frame, the detector is arranged on the reamer frame, the controller is connected with the antenna, the sensors, the detector and the hydraulic system, and thecontroller analyzes data obtained by the antenna, the sensors and the detector and controls the hydraulic system to operate according to analysis results. The real-time working position of the reamerhead is obtained through the antenna and the various sensors, it is ensured that the real-time working position is always kept the same as a coordinate position preset in an automatic rock breaking construction program, and therefore digging construction operation in the whole open caisson cutting edge is accurately completed.

Description

technical field [0001] The invention relates to the technical field of caisson sinking construction, in particular to a device for crushing and removing slag at the edge of a caisson and a construction method thereof. Background technique [0002] As a structure for underground space structures or deep foundations of high-rise buildings or deep foundation pit support construction, caissons have their unique scope of engineering application conditions. The caisson sinks by cutting the soil with the blade feet. If the caisson does not have blade feet, it is impossible for the caisson to sink. During caisson sinking construction, blade foot is exactly kind of knife edge, cuts soil under the caisson self-weight effect of blade foot and top. When the blade foot is in the hard rock layer, when the blade foot and the weight of the caisson cannot cut the soil, it is necessary to use mechanical equipment or manually take soil from the inside of the caisson and below the blade foot t...

AI Technical Summary

Problems solved by technology

The grab method is to use the grab to grab the soil at the center of the bottom of the caisson, but it cannot handle the soil below the caisson blade foot and the partition wall, and can only rely on the blade foot and the soil below the partition wall to move on their own under the action of the caisson's own weight. Collapse, there are safety hazards and it is difficult to achieve the effect on hard soil layers, and the subsidence depth cannot be accurately controlled

Images