Dangerous rock body anchor net supporting method

Abstract

The invention relates to a dangerous rock body anchor net supporting method. The method comprises the following steps that (1), hole setting out and hole drilling are performed on a slope dangerous rock body according to a design drawing, wherein drilling holes comprise anchor rope drilling holes and anchor rod drilling holes; (2), anchor ropes are arranged and anchored in the anchor rope drillingholes, and anchor rods are arranged and anchored in the anchor rod drilling holes; and (3), a protection net is stretched on the dangerous rock body, wherein the protection net comprises supporting ropes and a net body connected to the supporting ropes, and the supporting ropes are fixed to the dangerous rock body through the anchor rods and the anchor ropes. According to the dangerous rock bodyanchor net supporting method, the anchor ropes, the anchor rods and an active net are combined, and the flexible anchor ropes and the rigid anchor rods are combined for supporting, so that the methodis applicable to supporting of large-scale dangerous rock bodies.

Description

technical field [0001] The invention relates to the field of rock slope engineering, in particular to an anchor net support method, which is suitable for the reinforcement and treatment of open-pit mining slopes or water conservancy and hydropower slopes. Background technique [0002] With the construction of open-pit mining projects and water conservancy and hydropower projects, a large number of high and steep rock slopes have appeared. The excavation and unloading of the slope made the original structural surface further penetrated and extended, and multiple groups of structural surfaces cut the rock mass, forming a dangerous rock mass with poor stability. Under the action of external forces, the dangerous rock mass is easily separated from the parent body and collapses. The higher the slope, the greater the threat of the dangerous rock mass. Therefore, it is very necessary to strengthen and control the dangerous rock mass of the slope. [0003] Excavation and cleaning o...

AI Technical Summary

Problems solved by technology

The rockfill concrete and passive protective net structure described in Patent No. CN106498903A solves the adverse effects of slope dangerous rock mass on engineering safety, but for high and steep slopes, the potential energy of dangerous rock mass is too high, and the destructive force of collapse is too great. The ability of passive protection is limited, and it is not an effective method; the internal crack tie method and the external crack tie method described in Patent Nos. The scope of reinforcement is limited, and it is difficult to apply to large-scale dangerous rock masses; the anchor-protection combined treatment structure described in Patent No. CN204676569U can only be applied to the reinforcement of larger dangerous rock masses, and the GPS-type double-layer protective net used is welded and fixed on the anchor On the pole, the construction process is complicated and the construction cost is high

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