Construction method for deep pit excavation

Abstract

The invention relates to the technical field of underground engineering, in particular to a construction method for excavating deep foundation ditch, wherein the bottom of an excavating machine is provided with a walking device to realize and finish selection of excavating positions, a support beam along the vertical direction of the excavating machine is arranged into a perpendicular adjustable beam which can be vertically adjusted along the vertical direction to realize adjustment of working height of the excavating machine, and a support beam along the horizontal direction of the excavating machine is arranged into a level adjustable beam which can be horizontally adjusted along the horizontal direction to realize adjustment of working scope of an excavating bucket of the excavating machine. After the selection and regulation are finished, the excavating is finished. The invention has the advantages of high safety when in construction, high efficiency, energy-saving, and environmental protection, and can excavate in omnibearing and in multi-angles.

Description

technical field [0001] The invention relates to the technical field of underground engineering, in particular to a construction method for excavating deep foundation pits. Background technique [0002] With the continuous development of urban construction, there are more and more various types of underground projects and deep foundation projects. High-efficiency, economical, energy-saving, and environmentally friendly construction methods for deep foundation pits are particularly important. At present, the following problems exist in the excavation construction of deep foundation pits using conventional methods: [0003] (1) Auxiliary devices such as foundation pit support affect the function of conventional excavators, especially when the excavation depth is greater than 20 meters, it is necessary to dig and fetch soil under the foundation pit support. Conventional excavators are restricted by the height of the boom, and it is difficult to even ineffective; [0004] (2) ...

AI Technical Summary

Problems solved by technology

[0003] (1) Auxiliary devices such as foundation pit support affect the function of conventional excavators, especially when the excavation depth is greater than 20 meters, it is necessary to dig and fetch soil under the foundation pit support. Conventional excavators are restricted by the height of the boom, and it is difficult to even ineffective;

[0004] (2) Existing manually operated excavators have many safety hazards, and there are many uncertain factors in excavating soil under deep foundation pits, which affect personal safety;

[0005] (3) Conventional excavators have unavoidable problems such as poor economy, poor environmental protection, high fuel consumption, and serious sewage discharge;

[0006] (4) Existing excavators have a single function, and the construction of deep foundation pits requires a considerable amount of work for erecting supports in addition to digging and transporting soil

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