Effect Of Filling Material Of Rock Mass Structural Plane On Slope Stability

With the rapid development of China's economy,a large number of modern buildings,highways and railways,and the development of various excavation and filling projects,the blasting excavation of rock mass will inevitably increase,and the number of rock slopes will also increase.In this paper,the slip of bedding structure of rock mass with gravel interlayer is studied,and the shear strength of different gravel weak interlayer is studied.The main considerations are:(1)the response of rock particle size in the interlayer to slip;(2)The response of rock particles with different strength types in the interlayer to slip;(3)After being disturbed by dynamic load,the properties of shear strength and anti slip of different gravel weak interlayer change.Combined with the past engineering construction examples,this paper explores its law,and the research results can be used as a reference for similar engineering design in the future.The static load test and dynamic static load triaxial test of rock particles are carried out by triaxial test equipment,and the corresponding stress-strain relationship curve of each sample is obtained.Based on the geotechnical strength theory,the mechanical properties of soft gravel interlayer are analyzed.The influence of soft interlayer structure with gravel on slope stability is analyzed,and the following conclusions are summarized:With the same test method,the maximum deviatoric stress of rock particle samples is mostly obtained in the case of moderate particle size range.The change of confining pressure will change the performance type of stress-strain relationship curve of rock particle sample.When the confining pressure exceeds a certain value,the internal friction angle of the sample will decrease with the increase of rock particle size.The stress-strain curve of rock particle sample is mainly affected by confining pressure and rock particle size.The change of rock particle size has an impact on the slope stability coefficient.The sample will reduce the impact of rock particle size change on the slope stability coefficient after dynamic load interference.Under the same conditions,the safety factor F_s of slope stability of soft structural plane with fine gravel filled by quartz stone is greater than the slope stability safety factor F_s of soft structural plane with fine gravel filled by weathered stone?...