Slope anchor rod anchoring method based on stress compensation

Abstract

The invention discloses a side slope anchor rod anchoring method based on stress compensation. The side slope anchor rod anchoring method comprises the following steps: measuring the physical and mechanical parameters of a side slope body; monitoring the three-dimensional stress state of each point in a slope body through an instrument, then determining the arrangement position of an anchor rod and the anchoring force compensation direction in combination with the limit stress state of a monitoring point determined by the Mohr-Coulomb criterion; and according to the stress state of the slope under the given safety coefficient and the stress state obtained through actual monitoring, calculating to obtain an anchoring force compensation value required by the anchor rod and an anchor rod parameter value. According to the scheme, the arrangement range and direction of the anchor rods can be accurately determined, the anchoring force can be determined according to the slope stress distribution state when it is guaranteed that the slope reaches the target safety coefficient, the anchor rod arrangement scheme is designed more economically, reasonably and safely through the method, and higher practical and popularization value is achieved.

Description

technical field [0001] The invention belongs to the field of slope reinforcement and prevention, and in particular relates to a stress compensation-based anchoring method for slope bolts. Background technique [0002] With the development of engineering construction in mountainous areas and cities, how to ensure the stability of high and steep slopes formed by a large number of natural and artificial excavations and piled loads has become the primary problem that should be solved in major engineering construction. Bolt anchoring technology has become one of the very important support methods in slope engineering because of its good reinforcement effect, flexible layout system and low cost. According to the Moore-Coulomb principle, the failure of any soil unit in the rock-soil body is essentially that the shear stress on the most dangerous fracture surface exceeds the shear stress it can bear, and the core of the anchor bolt support method is to use the anchor bolt The ancho...

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Problems solved by technology

[0003] At present, the traditional anchorage design of slope bolts first needs to assume the position of the sliding surface, and calculate the remaining sliding force of the slope, and then design the anchor bolts. Under this design method, the layout of the anchor bolts often adopts full-section anchorage blindly. The layout of the anchor rod is unreasonable, resulting in an increase in the cost of the reinforcement project, an increase in the construction period, and a waste of manpower and material resources.

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