Crack tracking and pressure feedback physical simulation test system and use method

By designing a physical simulation test system for crack tracking and pressure feedback in gas fracturing technology, the problem of difficult crack tracking and pressure feedback in the existing technology is solved, precise control of the crack range and a comprehensive understanding of the cracking crack expansion mechanism are achieved, and the efficiency and safety of fracturing technology are improved.

CN119688477APending Publication Date: 2025-03-25ANSTEEL GROUP MINING CO LTD
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Patent Information

Application Number
CN202411821591.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-11
Publication Date
2025-03-25

AI Technical Summary

Technical Problem

The existing gas fracturing technology is difficult to achieve real-time monitoring and regulation of crack tracking and pressure feedback, it cannot accurately control the cracking range, and lacks a comprehensive understanding of the cracking crack expansion mechanism.

Method used

A physical simulation test system for crack tracking and pressure feedback was designed. By arranging fiber grating sensors and acoustic emission sensors in similar material models, crack crack crack expansion is monitored in real time, and fracturing technology is regulated through feedback system to achieve accurate control of cracking range.

Benefits of technology

Real-time monitoring and pressure feedback regulation of crack crack expansion are achieved, the cracking range can be accurately controlled, and a comprehensive understanding of the cracking crack expansion mechanism is provided, and the efficiency and safety of fracturing technology are improved.

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Abstract

The invention provides a crack tracking and pressure feedback physical simulation test system and a test use method. The test system comprises a similar material model used for simulating rock mass in a mining area; a grating and an optical fiber which are used for collecting stress-strain signals are arranged in the horizontal hole, and the grating and the optical fiber are connected with a static stress-strain collector; the test bed is used for placing a similar material model; the hydraulic device is used for applying stress to the similar material model; the hydraulic device comprises a top hydraulic device and a lateral hydraulic device, the top hydraulic device is arranged at the top of the similar material model, and the lateral hydraulic device is arranged on the side face of the similar material model. According to the method, the expansion condition of cracks in the ore body fracturing process can be truly reflected, optimization design is conducted on the range from the in-situ position to the cracks of the ore body, the rock body cracking mode and the fluid pressure according to the test result, disturbance to surrounding rock is reduced to the maximum extent while the stoping efficiency is guaranteed, and safe and stable construction of a project is guaranteed.
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