A Brief Analysis of Karst Survey Mode for Urban Rail Transit Projects in Mountainous City
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 9
Abstract
Objective In the geological survey for Guiyang urban rail transit projects, karst is a common unfavorable geological condition and also the top geological issue to be confronted. However, the current survey mode of karst problems does not match the demand of Guiyang urban rail transit construction. Therefore, it is necessary to explore a karst survey mode applicable for urban rail transit construction in karst mountainous city. Method Starting from the karst hazards, the technical means, normative constrains and the actual experience from Guiyang City about karst survey are summarized and analyzed. It is then clearly pointed out that the current karst survey mode with “engineering geological mapping first, engineering drilling as the main method, engineering geophysical prospecting as the secondary method” is formed in the course of history, the situation where the contradiction between high resolution requirements and low resolution levels of the karst survey method becomes the principal one in current mountain karst survey for rail transit is discussed. Result & Conclusion Starting from the main contradiction in the current karst survey, and based on the development of technical means in karst survey and specific case analysis, it is concluded through research that the above-mentioned karst survey mode will inevitably evolve into a new survey mode of “starting from engineering needs and guided by geological thinking, with geological mapping first, ground geophysical survey, drilling and borehole geophysical prospecting as supplement and verification, featuring multi-method integration”.
Authors and Affiliations
Fabin LI, Yun GUO, Xiang WANG, Bin LONG, Yao ZENG
Keywords
Related Articles
- EP ID EP744330
- DOI 10.16037/j.1007-869x.2024.09.022
- Views 21
- Downloads 0
Conversion Scheme Design of Power Supply Return Mode for Metro Connection Lines
Objective The metro lines connected by connection line may adopt different power supply current return modes. In order to improve the efficiency of train line transfer, it is necessary to set up the return mode conversio...
Comparative Analysis of Balanced Maintenance System and Scheduled Maintenance System for Urban Rail Transit Vehicle
[Objective] In order to reduce the purchase cost and operation and maintenance cost of urban rail transit vehicles as much as possible, balanced maintenance system is adopted in some cities in China. Therefore, it is nec...
Numerical Simulation of Small Unconnected Karst Caves Grouting and Crack Quantity Impact Based on Fluent Software
Objective Grouting treatment of karst caves is a challenge in metro tunnel engineering, as improper handling of karst caves during construction can easily lead to accidents. Therefore, it is necessary to study the relati...
Deformation Law Analysis of Metro Station Deep Foundation Pit Constructed by Cover-Excavation Reverse Method in Sandy Area
Objective Stress deformation characteristics of the main structure in the process of metro station construction by cover-excavation reverse method are relatively complex. The construction mechanics process of the subway...
Study on Delayed Lateral Displacement of Elastic Wheels in a Certain Type of Tram
Objective The delayed lateral displacement of elastic wheels occurs in a certain type of tram during servive, significantly affecting the safe operation and maintenance of the vehicle. Method Experimental research is con...