Xiluodu 15 # Dam Section Consolidation Grouting Construction Quality Evaluation Research

Large-scale construction of arch dam foundation consolidation,consolidation grouting technology gradually become one of the most widely used technology in engineering practice.Consolidation grouting through the current advanced construction technologies,such as chemical grout,such as high voltage equipment,realize a lot of bad geological condition of reinforcement and processing,and achieved good results.Meanwhile,with engineering construction increasing complexity,grouting is increasingly difficult to guarantee the quality and effect of grouting,through the study of arch dam dam foundation consolidation test,provide reliable parameters for the construction and quality evaluation standard,for the safety of the entity project construction,economy has an irreplaceable value.Complex geological conditions,the multitude hydropower station dam grouting construction difficulty is big,subsequent processing method is directly related to dam safety operation,this article with the aid of xiluodu hydropower station dam foundation 15# dam embankment with practical engineering cases,according to the result of consolidation grouting test are summarized,the certain understanding and conclusion:(1)Through the study of basic theory,this paper discusses the basic theory of consolidation grouting mechanics,and points out the quality inspection methods,including acoustic method,rock mass permeability test,borehole variable modulus test and intelligent drilling test panoramic images.(2)Quoted the xiluodu hydropower station dam 15 # dam project cases,analyzes the hole arrangement,hole depth,filling slurry parameters,construction technology and so on,at the same time through acoustic detection,panoramic imaging detection methods,such as the results of 15 # dam foundation consolidation grouting is analyzed,and through the comparison of grouting holes before filling,after filling and wave velocity of rock mass,the permeable rate of consolidation grouting effect is evaluated.(3)By acoustic detection,borehole panoramic image detection,water pressure test method,to draw a section of the permeable rate,distribution of rock mass,according to different geological conditions,put forward cloth hole position,grouting pressure,concentration of slurry,grouting method.(4)Through the consolidation grouting filling after the second and third inspection results are summarized,and according to the test results and engineering actual situation,summarized the quality evaluation result table.The innovation and development of arch dam foundation consolidation grouting construction technology inseparable from the engineering field test instruction,the use of modern equipment and technology of quality inspection,to achieve a full range of quality control target,provide technical support to promote the construction of water conservancy projects.