Analysis of failure and optimization study of stoppage ring opening mechanism in sleeve valve casing material

In the context of deep -buried sleeve valve construction, two significant challenges in grouting operations involve the material infusion and subsequent failure of the casing material's opening loop. This study combines indoor experiments and field studies to investigate the optimization strategies for sleeve valve construction by introducing aggregate additives. The research begins with a theoretical analysis of the weak formation of the stoppage ring, scrutinizing its failure causes under deep -buried conditions. It further delves into mechanism study on optimizing the opening loop mechanism of the stoppage ring post the addition of crushed stone aggregates. Simultaneously, indoor experiments focus on assessing the fracture characteristics of aggregatecasing materials. These findings are then applied to on -site grouting loop tests. The experiments demonstrate that the inclusion of aggregates not only enhances the intact opening probability and operational efficiency of casing materials but also disperses the impact of casing material aggregates within the stratum. This dispersion significantly reinforces the crushed stonemud slurry framework within the stratum, ultimately contributing to improved stratum uniformity and stability. Through a comprehensive investigation into the casing material's opening loop mechanism, a clearer understanding of the causes of opening failure is achieved, leading to proposed optimization methodologies. These findings aim to provide both theoretical support and practical guidance for improving designs and optimizing fluid systems in diverse engineering contexts.