Construction treatment method of filling karst tunnel

Abstract

The invention discloses a construction treatment method of a filling karst tunnel. The construction treatment method comprises the following steps that (a), a karst development control factor and a development principle are sought; (b), karst detecting is conducted for advance geology forecast; (c), analysis of influence of filling karst on stability of tunnel surrounding rocks is conducted; and (d), filling karst treatment is conducted. According to the construction treatment method of the filling karst tunnel, filling karst advance geology forecast, pre-reinforcement measures and the normal construction technical process of the tunnel are organically combined, and the safety risks of filling karst section tunnel construction are reduced or avoided by sufficiently using the means and methods such as advance geology forecast and pre-reinforcement. The construction treatment method is applied to tunnel filling karst construction of highways and railways, and meanwhile, the construction treatment method has imitative and referential significances on construction of the railways, the highways, municipal administrations and hydraulic tunnels (caves) with similar geological conditions.

Description

technical field [0001] The invention relates to a tunnel construction treatment method, in particular to a filling karst tunnel construction treatment method. Background technique [0002] Karst collapses are widely distributed in my country, and many fields suffer from them. Among them, highways, railways and mines suffered the most, followed by farmland water conservancy, urban construction, road and pipeline facilities, etc. With the implementation of my country's western development strategy, expressways and railways continue to extend to mountainous areas. According to the "13th Five-Year Plan" adjusted by the Ministry of Communications in early 2016, at the end of the "13th Five-Year Plan", the mileage of my country's highways will reach 1.5 million km, of which the expressway mileage will reach 138,000 km. A large number of roads under construction or in planning inevitably need to pass through karst-developed areas, and a large number of various karst caves on the r...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method that can solve the problem of excessive concentration of stress in surrounding rock caused by filling karst during tunnel construction, increased deformation around the tunnel, and possible collapse of local surrounding rock during tunnel excavation. , falling blocks, affecting tunnel construction, and directly endangering the safety of construction personnel and mechanical equipment, a filling karst tunnel construction treatment method

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