An intelligent early warning type earth pressure balance shield advance grouting device and construction method

Abstract

The invention discloses an intelligent early warning type earth pressure balance shield advance grouting device and a construction method. The grouting device comprises a shield machine cutter head, agrouting system, a sealing device, a monitoring system and a shield machine computer. The grouting system comprises a drilling and injecting dual-purpose pipe, a grouting hose, a double-pipe drillingrig and a grouting pump. The technical measures of drilling and injecting integration and the simultaneous injection of bentonite are taken, formation sediment is effectively prevented from clogginga grouting hole and reducing the formation disturbance, and grouting operation does not need to be performed after drilling operation, so that the construction efficiency is greatly improved and destruction of the surrounding environment is reduced; and according to the technical scheme, after a shield machine reads an earth pressure value and a water level value, grouting pressure and a groutingpressure value are given, a timely emergency plan for a water level abnormal value is given, the operating principle is clear, intelligence is high, and reliability is high. Short drill pipes and theintelligent technology are adopted, the problems of the space narrowness of a tunnel and the concealment of underground engineering are solved to a large extent, and the high efficiency and safety ofshield construction are ensured.

Description

technical field [0001] The invention relates to a construction device in the technical field of underground construction engineering, in particular to an intelligent early warning earth pressure balance shield advanced grouting device and a construction method. Background technique [0002] The shield tunneling method has the characteristics of high construction safety, less ground traffic interference, and small impact on the surrounding environment. It is the main construction method of tunnel engineering. When the shield tunneling method is carried out in soft strata such as muddy soil, due to reasons such as low soil strength, strong fluidity, and large thixotropy, it will adversely affect the construction process such as the axis control of the shield tunneling, and it is easy to cause stratum Deformation, destruction of the surrounding environment, etc. In view of the above adverse effects, the traditional method generally adopts the ground grouting reinforcement tech...

AI Technical Summary

Problems solved by technology

Although the grouting device described in the patent realizes a variety of grout mixing grouting processes, it cannot automatically switch the grouting process according to the site conditions; and the grouting device described in the patent must be grouted after the drilling operation is completed operation, construction efficiency is relatively low

The grouting device described in this patent determines the grouting pressure based on experience, so the grouting device described in this patent needs to set the grouting method and grouting pressure in advance. cumbersome

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