基于支架–围岩耦合原理的模拟试验液压支架及测控系统研制与应用

doi:10.13722/j.cnki.jrme.2017.1186

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Abstract At present，the support and surrounding rocks in the model test cannot meet the coupling relationships of stiffness，strength and stability，and the features of three-dimensional loads of support are also neglected. To ensure the accuracy of experimental results，a mechanical model of support under three-dimensional loadings was established，the effect of the squeezing force between the supports and the lateral force behind supports were considered. A two-prop shield hydraulic support was developed and the parameters of real-time performance were obtained with the high precision displacement/stress sensors. The properties of model support were tested. The results show that the model support has the resistance range of 0.046 to 0.528 kN，which can adjust the output pressure and the diameter of column to achieve the designated working resistance. The stiffness of model support in the resistance increasing phase is basically unchanged and is high enough to resist the dynamic impact. The critical slip angle of the support under triaxial forces is smaller than that of the uniaxial compression，but the squeezing force between supports and the lateral force behind supports are suppressed to a certain extent. Then the model supports was applied to the experiment of 3132 working face，Lvshuidong coal mine. The working resistance of model support is 22.42 MPa，the error is less than 5% compared to the measured values from the field. The drilling observation instrument was used to detect the goaf and the performance of model supports was found to be in line with the field shields in adjusting the surrounding rock structure and stress field.

Key words： mining engineering steeply dipping seam system of model support visualization of support force support parameters inspection

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	Articles by authors
	WU Yongping1
	2
	HU Bosheng1
	2
	XIE Panshi1
	2
	WANG Hongwei1
	2

Cite this article:

WU Yongping1,2,HU Bosheng1, et al. Development and application of support and control system for simulating test based on the coupling principle of support-surrounding rocks[J]. , 2018, 37(2): 374-382.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.1186 OR http://www.rockmech.org/EN/Y2018/V37/I2/374

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