Shallow depth excavation system suitable for soft soil stratum and construction method

Abstract

The invention discloses a shallow depth excavation system suitable for a soft soil stratum and a construction method. The shallow depth excavation system comprises a machine body, and a left arm, a right arm, a spraying unit and a conveying unit arranged on the machine body; the spraying unit is arranged at the middle part of the machine body; the conveying unit is arranged at the middle part of the machine body; an excavation lifting unit is arranged on the left arm; the right arm is provided with an anchor rod unit and a milling excavation unit; and each unit is modularly mounted on the left arm and the right arm of the machine body. The shallow depth excavation system further comprises an unearthing unit; a rail on the unearthing unit is arranged in a main line tunnel; a conveying belt is arranged in a transverse channel perpendicular to the main line tunnel; an electric transportation truck is arranged on the rail; and a grab is lifted in a port of a vertical shaft. The shallow depth excavation system and the construction method realize integrated mechanical environmental protection construction, improve the tunnel construction efficiency, reduce the labor intensity, improve the construction safety, and greatly improve the technological level of tunnel engineering mechanical construction.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a shallow buried excavation system and a construction method suitable for soft ground. Background technique [0002] The shallow buried underground excavation method is a method of underground excavation construction of various types of underground caverns close to the surface. In the weak surrounding rock formations of cities and towns, the construction of underground works under shallow burial conditions is based on the premise of improving geological conditions, focusing on controlling surface subsidence, and using grids and shotcrete anchors as the initial support means, which is called shallow burial and underground excavation. Law. Although the technology of shallow burial and underground excavation is constantly improving and developing, each construction link still mainly relies on manpower construction, and there are the following deficiencies in constructio...

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Problems solved by technology

[0003] (1) The construction efficiency is low, and the average daily construction production efficiency is only 8.3% of the shield method that realizes tunnel mechanization.

[0004] (2) Manual use of shovels, shovels, and picks to dig earthworks is labor-intensive;

[0005] (3) The working environment is poor, and the dust pollution in the cave is relatively serious, which affects the occupational health of construction workers

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