Multistage high-strength rock slope cutting construction method

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 invention relates to a construction method for slope cutting of multi-level high-strength rock slopes. Background technique [0002] At present, the expressways built in the early stage show a saturated traffic volume, traffic accidents are gradually increasing, and the reconstruction and expansion of old highways are imminent. 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 hazard; using a single cutting or gas cracking method is too costly and inefficient. Adopt mechanical chisel to remove, need to close traffic equally inefficient. Contents of the invention [0003] An object of the present inven...

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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