Drawing experimental device capable of testing performance of grouting anchor cable under water-containing condition

Abstract

The invention relates to a drawing experimental device capable of testing the performance of a grouting anchor cable under a water-containing condition. The device comprises an anchor cable drawing mechanism, wherein the anchor cable drawing mechanism comprises a steel cylinder component, and the steel cylinder component is used for grouting and fixing a anchor cable in the steel cylinder; a drawing instrument component is used for performing a drawing experiment on the anchor cable which is subjected to grouting and fixing in the steel cylinder; in addition, the drawing experimental device further comprises a clamping seat mechanism, an upper half heating cylinder and a lower half heating cylinder. When the device is used, the steel cylinder can be heated through the upper half heating cylinder and the lower half heating cylinder to simulate geothermal heat, and meanwhile, torsion and impact force can be applied to a filling cavity through the impact oil cylinder and the torque oil cylinder on the clamping seat mechanism respectively, so that rock burst is simulated. According to the method, the stress and deformation rules of the anchor cable and the function of the anchor cable structure parameters on improving the stability and the bearing capacity of a supporting structure under different load action forms and different water-containing conditions of the surrounding rock can be analyzed by researching the interaction process of the anchor cable and the grouting surrounding rock, so that the optimal anchor cable supporting parameters and grouting time under different surrounding rock conditions can be obtained.

Description

technical field [0001] The invention relates to experimental equipment, in particular to a pulling experimental device capable of testing the performance of grouting anchor cables under water-containing conditions. Background technique [0002] The resource conditions of "rich coal, little gas, and oil shortage" determine that my country's energy structure is dominated by coal. Although my country's new energy has developed rapidly in recent years, due to my country's long-term energy structure and increasing per capita consumption, coal still accounts for more than 60% of the total energy in my country, and it will not change for a long time. In order to meet the ever-increasing demand for energy, the task of coal mining in my country will be very arduous for a long time in the future, and after long-term large-scale development, the coal resources with better mining conditions are almost exhausted, so the way out to increase production lies in mining those coal resources. ...

AI Technical Summary

Problems solved by technology

However, in the high ground pressure broken roadway, a series of problems have appeared: the prestress of the anchor is too low, the strength is insufficient, and the impact resistance is poor, causing the anchor to break or fail as a whole, and even the tail of the anchor is ejected and other damage phenomena; The diameter of the cable is small, the strength is low, the elongation rate is low, and the matching with the drill hole is poor, and the anchor cable is often broken or the whole slides; the strength and rigidity of the steel belt are small, it is easy to tear and break, and the roof protection effect is poor; in particular, When there is crack water on the roof of the roadway and it is conducted by the anchor cable hole, the water will be more serious

However, there is no mechanical performance experimental device specially used to restore the actual application scenarios of grouted anchor cables. Therefore, it brings great inconvenience to actual research and design.

Images