Tunnel inner micro-destabilization slip-casting control method in complex environmental condition

Abstract

The present invention relates to tunnel construction class which particularly relates to a tiny disturbance grouting control method in tunnel under a complex circumstance condition, which comprises position choice of grouting hole, style of grouting and choice of grouting chance, wherein, two rings are selected when choosing the grouting ring size, and coating grouting the reinforce point. The present invention injects a special serum around bottom layer by special tiny disturbance control technique in tunnel by a set of science hole matching method to act as not only reinforce function, but also least disturbance for soil in grouting process, controls the disturbance in grouting process and stratum displacement by tunnel construction at a little degree, protect efficiently adjacent underground and buildings sensitivity of ground settlement.

Description

Technical field [0001] The invention relates to tunnel construction, in particular to a micro-disturbance grouting control method in a tunnel under complex environmental conditions. Background technique [0002] At present, the commonly used grouting methods include compaction grouting, rotary jet grouting, cracking grouting, etc. Although their construction methods are different, they only specify the grouting amount and grouting pressure in the grouting parameters, and do not pay attention to The fine control of the grouting process may meet the requirements for better stratum or environmental conditions; and the selection of hole positions in the existing grouting technology is often to directly arrange holes for a single protected object position. Taking into account the surrounding complex environment, the hole layout is relatively simple, and generally only the final effect of grouting is considered, and the disturbance of the grouting process is not considered, so the resu...

AI Technical Summary

Problems solved by technology

[0002] Currently commonly used grouting methods include compaction grouting, rotary jet grouting, and cracking grouting. The fine control of the grouting process may meet the requirements for better strata or environmental conditions; and the selection of hole positions in the existing grouting technology is often to directly arrange holes for a single protected object position, which cannot Taking into account the complex surrounding environment, the hole layout is relatively simple, and generally only the final effect of grouting is considered, and the disturbance of the grouting process is not considered, so the result is often counterproductive; especially in the case of extremely high environmental protection requirements, especially when deformation When it needs to be controlled within a small range of millimeters, important parameters such as grouting flow rate, grouting times, and pipe pulling speed will produce relatively significant self-disturbances, so the degree of refinement is crucial to the realization of construction control goals

If the construction process is not properly controlled, the grouting method for the purpose of reinforcement often causes greater disturbance to the stratum, making the control index impossible to achieve

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