Olive-shaped anti-skid key grouting anchor support blasting bolt

Abstract

The invention relates to an olive-shaped anti-slip key grouted anchoring supporting blasting anchor rod which comprises an anchor rod body, a pad seat, an inserted plate and a nut. The pad seat and the inserted plate are respectively provided with an anchor rod hole; the top of the anchor rod body sequentially penetrates through the anchor rod hole in the pad seat and the anchor rod hole in the inserted plate and is connected with the nut; the positions, corresponding to a rock and earth mass slope weak slip structure face, of the anchor rod body and the range 0.5 m-1.5 m away from the top and the bottom of the anchor rod body are provided with cylindrical protective sleeves; cylindrical explosives with detonators are arranged outside the cylindrical protective sleeves; the detonators are connected with detonator wires. The anchor rod is simple in structure, convenient to construct and low in cost, a novel composite olive-shaped reinforced anti-slip key-surrounding rock fracture grouting-anchoring slope strengthening and supporting system is built, comprehensive three-dimensional landslide prevention with the slip face as an anti-slip focus and involving rock and earth mass strengthening by means of anchor groups composed of multiple anchor rods is achieved, and slope stability and safety are improved.

Description

technical field [0001] The invention relates to a rock-soil slope reinforcement and support technology with a clear sliding structural plane, in particular to an olive-shaped anti-sliding key grouting anchoring support blasting bolt. Background technique [0002] At present, no matter the slope formed by natural or artificial excavation, the rock-soil structural plane is one of the main controlling factors of its stability. The existence and characteristics of the weak structural plane have great influence on the deformation and failure mode and scale of the slope. Decisive control, especially for weak structural planes with gentle inclinations, which play an absolute control role on the stability of the slope. Due to the low strength of the weak structural planes, the large deformation and instability of the slope are caused. Therefore, the landslide along the structural plane is the The main disease types and control objects of similar slopes. [0003] Slope landslides wi...

AI Technical Summary

Problems solved by technology

However, the existing prevention and control methods and technologies all have problems such as large disturbance to the rock and soil mass of the slope, large amount of engineering, long time consumption, high cost, limited anti-sliding force that can be provided, and unsatisfactory reinforcement effect, etc.

Among them, anchoring is one of the main technical measures commonly used in landslide prevention and control engineering on slopes with clear and weak sliding structures. It tightly interlocks the strata through anchor rods buried in the stratum; The root of the anchoring method is to provide anchoring force, which indirectly provides anti-sliding force to the slope through the anchoring force of the anchor rod, and the anchoring force that can be provided is limited, so the reinforcement effect on the slope is not ideal.

At the same time, the rock and soil side slope landslide prevention project is also affected by stratum lithology, rock and soil structure, geological structure, hydrogeology, etc., and may be affected by strong earthquakes, which poses a threat to project safety

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