Method for water inrush prediction and seepage control for underwater-tunnel broken surrounding rocks

Abstract

The invention relates to a method for water inrush prediction and seepage control for underwater-tunnel broken surrounding rocks. The method includes the steps of S1), exploring by adopting a geophysical exploration and advanced-level geological drilling method and performing tests; S2), establishing a saltation prediction model of analytic hierarchy grey correlation of water inrush of the surrounding rocks by adopting an analytic hierarchy grey correlation method; S3), establishing a three-dimensional porous continuous medium fluid-structure coupled finite element model of the underwater-tunnel broken surrounding rocks by adopting an orthogonal back-analysis method; S4), performing dynamic prediction and seepage control on water inflow of the broken surrounding rocks and performing intelligent fuzzy logic control and instability early-warning forecast on high-pressure water inrush of the broken surrounding rocks; S5), adopting comprehensive prevention and control measures. Compared with the prior art, the method has the advantages that instability of water inrush of the underwater-tunnel broken surrounding rocks under high water pressure can be predicted and subjected to economical, reasonable, safe and reliable comprehensive seepage control.

Description

technical field [0001] The invention relates to a water inrush prediction and prevention method, in particular to a water inrush prediction and seepage control method for broken surrounding rock in an underwater 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 at the stage of theoretical model research, lack of research on system engineering methods and nonlinear science, and can only mak...

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Problems solved by technology

However, most of these research results at home and abroad are still at the stage of theoretical model research, lack of research on system engineering methods and nonlinear science, and can only make qualitative predictions for actual engineering, and often cannot make predictions for water inrush in actual engineering. Accurate forecasting makes it more difficult to carry out early warning and forecasting 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 underwater tunnels such as cross-river (river) tunnels and subsea tunnels However, it is particularly urgent to develop an economical, safe, effective and reasonable method for water inrush prediction and seepage control of broken surrounding rock in underwater tunnels.

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