Early warning method for sudden gushing water danger of undersea tunnel

Abstract

The invention relates to an early warning method for a sudden gushing water danger of an undersea tunnel. The early warning method for the sudden gushing water danger of the undersea tunnel includes that step S1, using a geophysical exploration method and an advanced geological drilling method to extract rock and soil test samples, and performing indoor physical and mechanical tests and a penetration test; step S2, monitoring and measuring measured data, surrounding rock and vault sedimentation and side wall displacement in the field, and building a grey cusp catastrophe time forecasting model for the instability of a surrounding rock or surrounding rock-primary support system; step S3, obtaining surrounding rock support design parameters through a parabolic vertex numerical inverse analysis method; step S4, building a visco-elastic plastic model of the surrounding rock or surrounding rock-primary support system of the undersea tunnel under high pressure water based on an ABAQUS platform simulation software according to the step S1, step S2 and step S3 to early warn the danger. The early warning method for the sudden gushing water danger of the undersea tunnel is capable of improving the reasonable design, safe construction, comprehensive water bursting control and the like of the undersea tunnel of the soft cracked surrounding rock under high pressure water.

Description

technical field [0001] The invention relates to a method for early warning of dangerous situation, in particular to an early warning method for dangerous situation of water inrush in a subsea tunnel. Background technique [0002] Foreign countries have started research on water inrush forecasting during tunnel construction very early, and have achieved some results. Our country started late in the development of early warning and forecasting of tunnel high-pressure water inrush and its decision-making system, and the research foundation is relatively weak. However, in recent years, many scholars have begun to pay attention to the early warning and forecasting of high-pressure water inrush in tunnels, and have also achieved some gratifying research results. . However, most of these research results at home and abroad are still in the stage of theoretical model research, lack of systematic engineering methods and nonlinear scientific research, can only make qualitative predic...

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Problems solved by technology

However, most of these research results at home and abroad are still in the stage of theoretical model research, lack of systematic engineering methods and nonlinear scientific research, can only make qualitative predictions for actual engineering, and often cannot make accurate predictions for actual engineering water inrush. In addition, it is difficult to carry out early warning and forecast of tunnel high-pressure water inrush hazards and carry out economical, safe and reasonable comprehensive prevention and control, so it is also difficult to apply to the construction of subsea tunnels, and develop an economical, safe, An effective and reasonable early warning and decision-making system for high-pressure water inrush instability in subsea tunnels is particularly urgent

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