A construction method for slope cutting of multi-level high-strength rock slope

Abstract

The invention discloses a multistage high-strength rock slope cutting construction method. The multistage high-strength rock slope cutting construction method comprises the following steps that S1, protective bent frame construction is conducted, specifically, protective bent frames are erected at the bottoms of a first-stage slope, a second-stage slope and a third-stage slope before construction;S2, anchoring area construction is conducted, specifically, the third-stage slope is anchored through anchor cables, and the second-stage slope is supported through deep anchor rods; S3, static cutting area construction is conducted, specifically, slope toes of the first-stage slope and the second-stage slope are subjected to static cutting, cut stones are hoisted and transported out one by one,and an upper mechanical breaking construction space and a lower slag discharging transportation space are formed; S4, mechanical breaking area construction is conducted, specifically, the remaining slopes after static cutting are subjected to mechanical chiseling construction, and remaining rock bodies are broken; and S5, net hanging construction is conducted, specifically, broken rock bodies on the slopes are removed, and net hanging construction is conducted. According to the construction method, so that multistage high-strength rock slope cutting construction is economical, safe and efficient.

Description

Technical field[0001]The invention relates to the technical field of roadbed construction. More specifically, the present invention relates to a construction method for cutting a multi-level high-strength rock slope.Background technique[0002]The current early construction of expressways is showing a saturated traffic volume, traffic accidents are gradually increasing, and the reconstruction and expansion of old highways is imminent. When highway reconstruction and expansion encounters high-strength rock slope widening construction, traditional construction often uses blasting and mechanical chiseling to cut the slope of the entire slope, and the amount of work is large; the use of blasting construction is bound to interrupt traffic and exist. Safety hazards; using a single cutting or gas fracturing method is too costly and inefficient. The use of mechanical chiseling and the need to close the traffic is also inefficient.Summary of the invention[0003]An object of the present inventio...

AI Technical Summary

Problems solved by technology

When expressway reconstruction and expansion encounter high-strength rock slope widening construction, traditional construction often uses blasting and mechanical chisel removal to cut the entire slope, and the amount of work is large; blasting construction is bound to interrupt traffic, and there are Safety hazards; using a single cutting or gas-fracturing method is cost-prohibitive and inefficient

The use of mechanical chisel removal, which needs to be closed to traffic, is also inefficient

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