Large-scale complex surrounding rock condition bolt-grouting integrated coupling effect test system and method

Abstract

The invention discloses a large-scale complex surrounding rock condition bolting-grouting integrated coupling effect test system and method, and the system mainly comprises a sealed box body, a plurality of side pressure units which independently provide side extrusion force are sequentially and uniformly arranged on the inner wall of the box body, and the box body is filled with a coal and rock mass or an analog simulation material; a plurality of transverse shearing units, and a twisting unit for twisting the grouting anchor rod and a stretching unit for controlling the twisting unit to stretch linearly are sequentially arranged in the linear direction of the embedded anchor rod or the grouting anchor rod of the test system. The free end of the grouting anchor rod embedded in the test system is detachably connected with the grouting device. Through the large-scale underground simulation test system, the mechanical properties of a common anchor rod and a grouting anchor rod under thesingle-factor or multi-factor coupling action of pulling, twisting, shearing, cutting and bending under complex geological conditions can be simulated; and deformation rules and mechanical propertiesof the underground rock mass and the grouting rock mass under complex conditions can be simulated, and seepage diffusion rules of different slurries and changes of rock mass strength are tested.

Description

technical field [0001] The invention relates to the field of mine support equipment and detection and test equipment thereof, in particular to a test system and method for an anchor-grouting integration coupling effect under large-scale complex surrounding rock conditions. Background technique [0002] Bolt support has become an efficient support method for coal mine roadways, tunnels and slopes, and has been widely promoted in my country. Taking coal mines as an example, bolts can not only increase the anchoring force of the anchored coal and rock mass, but also improve the mechanical properties of the coal and rock mass through grouting, preventing the displacement of the two sides of the roadway and the bottom of the roadway floor. [0003] After the bolt is driven into the surrounding rock of the roadway, the actual stress situation under the action of the surrounding rock is very complicated. A bolt is subjected to one or more combinations of forces under the conditions...

AI Technical Summary

Problems solved by technology

[0011] In order to solve the problems existing in the above-mentioned existing detection technologies for anchor bolts, the present invention provides a large-scale and complex surrounding rock condition anchor-grouting integrated coupling test system and method

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