Dynamic design method of underground water-sealed cave depot water curtain system structure

Abstract

The invention relates to a dynamic design method of an underground water-sealed cave depot water curtain system structure. The dynamic design method comprises the steps that preliminary design parameters of the water curtain system structure are determined based on engineering geological investigation information; an omnidirectional hydrologic monitoring network is arranged to obtain hydrologic dynamic information in the field testing process; single-water-curtain-hole water injection-return detection is carried out so as to obtain water-curtain-hole rock body permeability coefficients; zonedmulti-water-curtain-hole hydraulic efficiency detection is carried out, water curtain holes are increased among low-efficiency water curtain holes on the basis, and zoned multi-water-curtain-hole hydraulic efficiency detection is carried out again to verify the hydraulic conduction efficiency; a comprehensive hydraulic efficiency test of a water curtain system is carried out, and the water curtainsystem structure is verified and optimized. The dynamic design method overcomes the shortcoming that a static design method of an underground water-sealed cave depot water curtain system cannot adaptto geological complexity, cannot verify water sealing effectiveness and cannot achieve economic cost saving and further overcomes the shortcomings of process unintelligibility and randomness of an underground water-sealed cave depot water curtain efficiency test.

Description

technical field [0001] The invention relates to the technical field of underground water-sealed caverns, in particular to a dynamic design method for a water curtain system structure of an underground water-sealed cavern. Background technique [0002] The biggest problem faced by underground water-sealed caverns is the leakage of the storage medium, causing serious economic losses, and may lead to environmental pollution such as groundwater, air, and soil, as well as safety issues such as fire and explosion. The dissolution and diffusion of petroleum or liquefied petroleum gas in saturated water medium are small, and the main way of leakage during storage is through the pores and fissures in the rock mass. Generally speaking, if the rock mass is unsaturated, the gas will flow out in laminar or turbulent flow under unfavorable conditions; if the rock mass is saturated, the gas will flow out in the form of bubbles or barrels under unfavorable conditions. In order to prevent b...

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Problems solved by technology

The current design method of water curtain system for underground water-sealed cavern ignores this geological uncertainty and adopts a one-step static design concept without any water curtain system efficiency test content, which cannot ensure the water sealing performance of the water curtain system and safety, it is not suitable for application in underground water-sealed cavern engineering

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