Physical simulation experiment system and method of deep-tunnel high-resistance extensible anchor pole support

Abstract

The invention discloses a physical simulation experiment system and method of deep-tunnel high-resistance extensible anchor pole support. The physical simulation experiment system comprises a simulation experiment table, a pressure loading apparatus, high-resistance extensible anchor poles, a tunnel model, a surrounding rock displacement sensor, an anchor pole dynamometer, an anchor pole dynamometer, a pole tail sleeve displacement sensor, a digital display screen, a data emission apparatus, a data receiving apparatus, a display and a data processing apparatus. The pressure loading apparatus is arranged at equal intervals between the outer side of the tunnel model inside the simulation experiment table, the multiple high-resistance extensible anchor poles are arranged between the anchorage zone rock and the hole of a tunnel, output of the surrounding rock displacement sensor, the anchor pole dynamometer and the pole tail sleeve displacement sensor is sent to the data processing apparatus for processing and is displayed by the display. The system provided by the invention is reasonable in structural design and simple to operate, enables people to visually observe deformation and support working states of the anchor pole and realizes simulation of the support mechanics characteristics and the support process of the anchor poles.

Description

technical field [0001] The invention belongs to the field of surrounding rock stability control of deep mine roadway engineering, and in particular relates to a physical simulation experiment system and method for deep roadway high-resistance extendable bolt support. Background technique [0002] In recent years, with the rapid development of my country's national economy and mining industry, the mining depth of mines has been increasing, and a large number of deep wells with a kilometer level have appeared, such as Shenyang Caitun Mine, Kailuan Zhaogezhuang Mine, Xinfensun Mine, etc. Village Mine, Beipiao Guanshan Mine, Xuzhou Zhangxiaolou Mine, etc. In the next 10-20 years, more mines in my country will enter deep or ultra-deep mining. With the increase of mining depth and the increasingly complex mining conditions, most of the deep roadways generally show the characteristics of large deformation, high stress, severe mine pressure, and long-term continuous deformation, resu...

AI Technical Summary

Problems solved by technology

However, there are still obvious defects in the roadway bolt support simulation experiment platform established at present, which are as follows: first, the simulation effect of the mechanical properties of the high-resistance stretchable bolt is not ideal, and the support during the experimental loading and elongation process is not ideal. The resistance is small or even completely lost, and the elongation of the bolt is also very limited, which does not reflect the large deformation control effect of the surrounding rock; second, most of the bolt support simulation experiments are destructive experiments, and the time-consuming production of the bolt model and Similar filling materials in the surrounding rock cannot be reused after the experiment, resulting in a great waste; third, the action process of the bolt support and its working condition data are not clearly reflected, because the bolt is placed inside the surrounding rock, it cannot be directly observed to the working process and working status of its support; in addition, for the acquisition and processing of the working condition parameters such as the stress and deformation of the anchor bolt, methods such as embedding pressure cells, pressure gauges, and strain gauges are usually used, and the collected data will be collected after the experiment is completed. Obviously, this method cannot grasp the working state of the bolt and the deformation of the surrounding rock in real time, which is not conducive to the analysis of the surrounding rock-supporting mechanism

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