The Key Technology Of Slope Supporting From Zhengzhou To Xinzheng Fast Tract Reconstruction Engineering

Slope engineering is a complex problem, which relates to many subjects, such as geology,structure, environment, materials and equipment, with the experimental and numericalsimulation technology is increasingly perfect, slope stability theory has been developeddeeper. To maintain the stability of slope is the role is self-evident, its impact is enormous, onwhether property people safety and convenient traffic smoothly and has a great influence. Atthe same time, it maintains the integrity of the slope, the slope to prevent soil erosion,surrounding structures and the local ecological environment of stability and balance have biginfluence. The reinforcement and protection has gradually become important, scientific andreasonable supporting measures for slope stability provides a strong guarantee.This paper is based on the key project of Zhengzhou city traffic engineering ofZhengzhou to Xinzheng fast track reconstruction project as an example, the engineeringcutting dug deep to1.65~13.9m; the soil mainly for miscellaneous fill and silty sand,self-reliance is poor, foundation bearing capacity is low; slope excavation boundary distanceBeijing Guangzhou railway viaduct close. Therefore, how to combine the formationconditions of the road, to formulate the corresponding cutting support scheme to ensure theviaduct and the Beijing Guangzhou railway line and the normal operation of the roadconstruction safety, but also economically reasonable, time optimal completion ofconstruction, has an urgent demand, therefore we need special research for this project.Through field investigation, summarizes the methods and slope support scheme andapplication analysis of slope stability at home and abroad, the scope of application,engineering and economic effectiveness evaluation better micro pile composite soil nailingwall and prestressed anchor cable pile as the research object, expounds the supportingmechanism, according to the study of the engineering example, summarizes the constructiontechnology and quality control measures in detail, and briefly introduce the constructiontechnology of box culvert jacking. The main research contents of this paper are as follows:1. At first, classification, the slope factor and the failure mode is introduced.2. Survey of project engineering alterations to the Zhengzhou to Xinzheng fast track, engineering geological conditions, the surrounding environmental conditions are described,and formulate corresponding slope support scheme.3. The steel micro pile composite soil nailing wall and pile anchor supporting mechanism andfailure modes, a simple calculation method is introduced, and checking the stability.4. Combined with the practical engineering of the construction technology, introduced thesteel micro pile composite soil nailing wall, prestressed anchor cable pile, box culvertconstruction technology and technical requirements.