Test device and method suitable for reinforcement of advanced core soil of new-meaning tunnel method

Abstract

The invention discloses a novel method advanced core soil reinforcement test device suitable for tunnels, which comprises a side plate defining a square, a pressure bearing plate is vertically embedded in the lower end of the side plate, and a pressurizing plate is embedded in the upper end of the side plate; the side plates comprise a left baffle, a rear baffle, a right baffle and a front baffle which are fixedly connected in sequence; the inner wall ends of the lower ends of the front baffle, the rear baffle, the left baffle and the right baffle abut against the four edges of the bearing plate correspondingly. The inner walls of the upper ends of the front baffle, the rear baffle, the left baffle and the right baffle abut against the four edges of the pressurizing plate respectively. The left baffle is parallel to the right baffle, and the front baffle is parallel to the rear baffle; the left baffle is vertically and fixedly connected with the front baffle; the left baffle is slidably connected with a movable gate. The device is simple in structure, high in modularization degree and capable of being combined and expanded at will, the size requirements of different models are met, similar materials are adopted in a model test for simulating surrounding rock around a tunnel and pre-pressing and consolidating, and a theoretical basis is provided for research and corresponding reinforcement of advanced core soil in the longitudinal direction of the tunnel.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering construction, in particular to a test device and method suitable for advanced core soil reinforcement of tunnels. Background technique [0002] my country's infrastructure is advancing by leaps and bounds, and a large number of world-renowned projects cannot be realized without the rapid development of tunnel engineering technology, especially in heterogeneous weak surrounding rock, which is a key project. At present, the new Austrian method is mostly used in tunnel construction, but when this method is applied to weak surrounding rocks, it is difficult to stabilize the tunnel face, so the reserved core soil, CD construction method, CRD construction method, double side wall pilot pit method, etc. are often used. Complicated, high cost, low mechanization efficiency, uncontrollable construction period, and insufficient scientific concept of passive support often lead to irreparable conseq...

AI Technical Summary

Problems solved by technology

In tunnel construction, the smaller the excavation section and the more uniform the surrounding rock conditions, the more conducive to mechanical operation, while traditional construction often adopts methods such as excavating in sections and reserving core soil to assist technical means such as small conduits and pipe sheds in advance to maintain The stability of the tunnel face greatly limits the use of machinery, so it is urgent to carry out research work on tunnel mechanized and efficient excavation

Images