中文摘要：

开山爆破后的散体碎石直径比较大且级配很差,强夯加固大粒径散体碎石地基的宏观力学特性与散体碎石的细观特性密切相关。针对开山爆破碎石回填地基的特点,在运用颗粒物质力学理论分析散体碎石回填地基强夯加固机理的基础上,采用高密度电阻率法、数值模拟和预埋土压力盒相结合的方法评价强夯加固效果,建立了电阻率-密实度-承载力三者之间的函数关系。研究结果表明：地基夯实后的电阻率高低形态能够有效判断地基夯实的均匀性和有效加固深度;利用强夯前后电阻率的变化幅值,确定强夯的影响范围,并建立电阻率-密实度-承载力三者之间的关系,利用其相关性建立强夯加固散体碎石地基的有效深度及适用的判定指标;由土压力盒数据分析结果,验证了高密度电阻率法探测强夯加固碎石地基的有效性;根据高密度电阻率图像的分布形态、预埋土压力盒的数据、夯沉量及其曲线确定最优强夯击数,从而为优化强夯设计提供参考。

英文摘要：

Diameter of granular rock is relatively large and the gradation is poor after mountain cut blasting.The macro mechanical properties of dynamic consolidation of large diameter granular rock foundation are highly related to properties of granular rock.Based on the characteristics of mountain cut blasting gravel backfill foundation and the analysis of granular rock backfill foundation consolidation mechanism by using granular material mechanics theory,this paper adopted comprehensive using high density resistivity method,numerical simulation and burying earth pressure cell method to evaluate the effect of dynamic consolidation,and established the function relation of resistivity,compactness and bearing capacity.The results show that the resistivity of foundation is effective in judging the uniformity of foundation.The variation of resistivity before and after dynamic consolidation is used to determine the influence range ofdynamic consolidation,and establish the relationship among resistivity,compactness and bearing capacity.Its correlation is used to establish the effective depth of gravel foundation and the applicable criterion of judgement.The analysis result of each pressure cell data is used to examine the effectiveness of gravel foundation with dynamic consolidation of high density resistivity.By using the distribution pattern of high density resistivity image,data of burying earth pressure cell,weight of the dynamic consolidation and its curve,the optimal dynamic consolidation parameter can be obtained, which provide references for optimization design of dynamic consolidation.