A Study On Supporting Technology Of The Slop Across Loose Soil

Supporting technology research of the slope is the most important problem in slop engineering. It is based on the analysis of the stability of surrounding rock. Therefore, engaging in the research of the stability of surrounding rock and supporting technology, which have important engineering application value. This paper taking the Wei Qiang slope of Hen Shang as engineering background, taking supporting technology of slope across the loose soil and the problem of stability of surrounding rock in the excavation process as the main research object. Researching the deformation law of Wei Qiang slope in loose soil and deformation characteristics of surrounding rock in different supporting scheme by means of theoretical analysis, monitoring measurement and numerical simulation. Optimizing and designing the supporting scheme based on it, providing some references for support technology of the similar in furure:First, after reading the vast literature about underground engineering, summarizing the research methods of stability of surrounding rock and supporting structure theory of demoestic and foreign on loose soil. The main methods include classification of surrounding rock, monitoring measurement and numerical calculation. Summarizing supporting structure mode of.the slop engineering in the lose soil, researching effect mechanism of different supporting structure reinforce surrounding rock. According to the nature of lose soil layer, combined with the engineering practice, analysing and judging the type of slope. That is mainly IV and V two kinds of surrounding rock for slope. On the basis, summarizing and analysing supporting technology during the different period of construction of the slop.Second, analysing mainly the dates of vault sink and surrounding convergence from the aspects of limit displacement value, deformation rate and acceleration through the dynamic monitoring of the typical section. Researching and summarizing the deformation law of monitoring section of primary supporting structure. Discussing the primary support parameters on the effect on the stability of slop. Analysing the distribution rule of surrounding rock plastic zone, stress concentration zone, displacement field in the different supporting structure and the deformation law of surrounding rock in loose soli layer in the process of slop excavation by means of numerical simulation. Obtaining the most weak and sensitive in the construction of slop, researching the role that supporting structure play in these key sections.Finally, Studying comparatively numerical simulation with monitoring measurement, judging rationality and security of the slop in the existing supporting structure, then and optimizing designing supporting scheme, so as to provide theory and on-site guidance for supporting technology of the similar projects in future.