Safety evaluation method for rock cavern gas storage with inner liner based on physical model test

By establishing a physical model and installing sensors to monitor the stress state of the gas storage tank with inner rock lining, and calculating the overload factor, the problem that existing technologies cannot evaluate the overall stress state of the composite structure of sealing layer-lining-surrounding rock is solved, and more accurate safety evaluation and engineering safety are achieved.

CN116840062BActive Publication Date: 2026-06-12CHINA THREE GORGES CORPORATION
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA THREE GORGES CORPORATION
Filing Date
2023-07-27
Publication Date
2026-06-12

AI Technical Summary

Technical Problem

Existing technologies cannot accurately reflect the overall stress state of each material in the composite structure of the sealing layer-lining-surrounding rock of the gas storage tank with inner rock lining, which makes it impossible to effectively evaluate its safety.

Method used

By establishing a physical model based on the principle of similarity, installing pressure sensors and state sensors, gradually increasing the internal pressure, monitoring the loading internal pressure when the lining cracks, sealing layer defects, sealing layer failure, and the overall large deformation of the composite structure are observed, calculating the overload factor, and using the overload factor to evaluate the overall safety.

Benefits of technology

It provides a more accurate overall safety assessment of the gas storage facility with an inner rock cavern, enabling the identification of key issues in complex environments and improving the safety of engineering operations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN116840062B_ABST
    Figure CN116840062B_ABST
Patent Text Reader

Abstract

The application provides a kind of based on physical model test's inner lining rock cave gas storage safety evaluation method, method includes: based on the principle of similarity establishes the composite structure of inner lining rock cave gas storage and the physical model of geological environment of occurrence;Pressure sensor and state sensor are installed on the composite structure of physical model;The internal pressure of composite structure is gradually increased, and the loading internal pressure under different overload states is judged according to the detection result of state sensor;According to the loading internal pressure and the preset maximum loading internal pressure, the overload multiple of composite structure under different overload states is calculated respectively;The overall safety of inner lining rock cave gas storage is evaluated by using overload multiple.Through the establishment of physical model, the loading internal pressure under different overload states of inner lining rock cave gas storage is detected by using sensor equipment, and the main parameters are strictly controlled, which is beneficial to highlight the main contradiction and find the internal relationship in complex environment, and more accurately and comprehensively evaluate the overall safety of inner lining rock cave gas storage.
Need to check novelty before this filing date? Find Prior Art