牡佳客专采空区注浆加固及效果评价技术研究

煤矿采空区上方跨越通车承荷能力不足的问题已日趋严峻.为解决牡佳客专跨越煤矿采空区这一问题，对采空区域进行了现场注浆方案设计和实施，最后借助多种注浆加固效果评价方法对其效果进行评价.研究表明：全充填压力注浆法能够有效改善牡佳客专采空区的破碎和孔洞等问题，同时通过现场取芯、室内力学性能试验、波速测定、区域孔位注浆效果检测以及CT检测技术，进一步验证了设计方案和现场实施的可行性和准确性，最后结合相关专业规范对注浆效果进行评价.得出的结论可作为此类工程项目在勘测、设计、实施与检测等方面的有效补充.

Research on Grouting Reinforcement and Effect Evaluation Technology in Goaf of Mujia Passenger Dedicated Line

The problem of insufficient load bearing capacity of crossing over the goaf has become increasingly serious. In order to solve the problem of the Mujia Passenger Dedicated Railway crossing the goaf of the coal mine, this paper designs and implements the on-site grouting scheme for the goaf, and finally evaluates its effect with a variety of grouting reinforcement effect evaluation methods. The research shows that the full filling pressure grouting method can effectively improve the broken and hole problems in the goaf of the Mujia Passenger Dedicated Railway. At the same time, the feasibility and accuracy of the design scheme and on-site implementation are further verified through on-site coring, indoor mechanical property test, wave velocity measurement, regional hole location grouting effect detection and CT detection technology. Finally, the grouting effect is evaluated in combination with relevant professional specifications. The conclusions can be used as an effective supplement to the survey, design, implementation and detection of such projects.