Novel double-layer pipe shed reinforcing device and implementation method

Abstract

According to the novel double-layer pipe shed reinforcing device and the implementation method, a pipe shed is divided into an upper layer and a lower layer and is arranged in a quincunx shape, a movable sleeve is arranged in the pipe shed, a plurality of steel nails capable of penetrating through the pipe shed are fixed to the sleeve, the steel nails are inserted into a soil body under the action of grouting pressure, the pipe shed reinforcing range is effectively expanded, the self-bearing capacity of surrounding rock is enhanced, and the pipe shed reinforcing effect is improved. The reinforcing effect is obvious. In addition, the invention further discloses an implementation method applying the double-layer pipe shed reinforcing device, and the implementation method comprises the steps that 1, construction preparation is conducted; step 2, surveying and setting out; 3, a measuring water pipe or a sensor is installed, and an impact drilling tool is installed on the pipe shed steel pipe; 4, a first section of steel pipe is installed, and a drilling machine is started for drilling; 5, after the footage is 0.5 m, construction parameters are rechecked, and drilling is continuously conducted after adjustment is completed; 6, pipe shed construction parameters are rechecked, and formed holes are checked; seventhly, grouting pipes are embedded in the ends, and the pipe shed steel pipes are filled with cement grout for grouting; and step 8, hole sealing.

Description

technical field [0001] The invention relates to the technical field of shield tunnel underpass engineering, in particular to a new double-layer pipe shed reinforcement device and an implementation method. Background technique [0002] In recent years, effective control of stratum settlement during underpassing of shield tunnels has become an important issue. When tunnels pass through existing lines and underpass existing buildings and structures, the existing lines, buildings and structures will suffer damage due to tunnel excavation. If it is damaged, landslides may occur during construction, and the reinforcement of the pipe shed can effectively control the surface settlement. [0003] The reinforcement of the tube shed is mainly to strengthen the integrity of the surrounding rock in the upper part of the shield tunnel, so that it forms a "rigid arch" effect, which can greatly resist the deformation of the surrounding rock outside the rigid arch area, thereby effectively c...

AI Technical Summary

Problems solved by technology

Even if the pipe shed loses its stability, its failure is relatively slow

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