Maoping Tunnel Lining Defects Caused By The Disease Mechanism And Reinforcement Technology Research

In recent years, with a substantial increase in the size of the highway tunnelconstruction, there are different degrees of defects and disease problems liningconsiderable proportion of the tunnel operators, seriously affecting the safety andreliability of the lining structure. Analysis of virulence mechanisms and measures ofstructural defects in the lining Disease Treatment is especially important to use thescientific method. This article relies Maoping tunnel, integrated use of theoreticalanalysis, numerical simulation, field testing, data collection and post-reinforcementreinforcement means monitoring a variety of technical research, the impact on thegeneral rules of tunnel lining quality defects and diseases of the lining of the structuralsafety factor remediation measures for strengthening the law and the tunnel depth study,the main work and research results are summarized as follows:①Based on the load-the establishment of a lack of operational structure methodof tunnel lining thickness, voids and other defects behind the model, using numericalsimulation, analysis of voids behind the lining thickness and defect location, extent andcomplex defects occur when, structural changes in the lining of internal forces, andcalculate the coefficient of variation of structural safety lining highway tunnel based ondesign specifications.②According to the site Maoping tunnel test data for the object, respectively, of thetunnel lining structural defects and diseases are classified. Lining structural defects isusually caused by geological conditions and the quality of construction causes; whilelining structural deformation, cracks, damage and other diseases are usually caused byfactors geological conditions, lack of lining thickness and quality defects such as voidsbehind the lining caused.③Binding site detection of tunnel lining structure of the data, the use of theforegoing analysis, structural defects on the lining of the internal stress analysis andstructural safety assessment, presented in conjunction jet grouting and anchoringreinforcement measures, and the materials used to make the specific requirements oftechnical specifications; of lining structure and diseases were classified according totheir applicability to assess the severity of the disease made specific for the differentpossible remediation measures and construction process, which will be applied to thereinforcement of remediation measures Maoping tunnel project reinforced. ④The use of load-structure method, based Maoping tunnel reinforcement worksin the numerical simulation analysis of the physical parameters of the material used, andthe reinforcement of the tunnel crown settlement after remediation, the surroundingconvergence, structural load status of a long-term monitoring of the amount of testresults show that after Reinforcement lining structure can achieve the desired results,can provide reference for similar tunnel repair and reinforcement.