Dynamic deformation and fracture characteristics of a deep roadway surrounding rock based on the machine vision monitoring method,Energy Science & Engineering

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Dynamic deformation and fracture characteristics of a deep roadway surrounding rock based on the machine vision monitoring method
Energy Science & Engineering ( IF 3.5 ) Pub Date : 2020-10-22 , DOI: 10.1002/ese3.823
Rui Zhou _{1,

2} , Jiankun Xu ₃ , Chao Wang ₄ , Xuelong Li _{5,

6}

Affiliation

The deformation and fracture of surrounding rock in deep underground engineering have the characteristics of time mutation and space continuity. In order to monitor and provide early warning of the dynamic deformation and fracture characteristics of deep surrounding rock, a real‐time digital displacement measuring instrument was developed in this paper. The proposed device represented a kind of surrounding rock deformation and fracture monitoring method, which had the continuous and real‐time advantages. Based upon the simulation experiments, the dynamic deformation and fracture of deep roadway surrounding rock were measured synchronously using the digital displacement measuring instrument testing system (DDMITS) and the V‐STARS measurement system. Comparative measurement results indicated that the DDMITS had a higher reliability. The deformation of roadway surrounding rock gradually increased with the increase of loading. The roof deformation and caving changing patterns in coal seam mining were studied using similar simulation experiments based on the DDMITS. The vertical displacement response of rock strata was more obvious than the horizontal displacement. There was a sharp increase in the vertical displacement during the collapse of the rock strata. Additionally, the vertical displacement velocity showed fluctuations. Meanwhile, the fluctuations in the vertical displacement acceleration increased significantly. The DDMITS could achieve full‐field measurement and the noncontact measurement of three‐dimensional deformation.

中文翻译：

基于机器视觉监测方法的深部巷道围岩动态变形与断裂特征

深层地下工程中围岩的变形和破裂具有时间突变和空间连续性的特点。为了监测深部围岩的动态变形和断裂特征并提供预警，本文开发了一种实时数字位移测量仪。所提出的装置代表了一种围岩变形和裂缝监测方法，具有连续性和实时性的优点。在模拟实验的基础上，使用数字位移测量仪测试系统（DDMITS）和V-STARS测量系统同步测量深巷道围岩的动态变形和断裂。对比测量结果表明，DDMITS具有较高的可靠性。随着荷载的增加，巷道围岩的变形逐渐增加。利用基于DDMITS的相似模拟实验研究了煤层开采中的顶板变形和崩落变化模式。岩层的竖向位移响应比水平位移更明显。在岩层塌陷期间，垂直位移急剧增加。另外，垂直位移速度显示出波动。同时，垂直位移加速度的波动显着增加。DDMITS可以实现三维变形的全场测量和非接触式测量。利用基于DDMITS的相似模拟实验研究了煤层开采中的顶板变形和崩落变化模式。岩层的竖向位移响应比水平位移更明显。在岩层塌陷期间，垂直位移急剧增加。另外，垂直位移速度显示出波动。同时，垂直位移加速度的波动显着增加。DDMITS可以实现三维变形的全场测量和非接触式测量。利用基于DDMITS的相似模拟实验研究了煤层开采中的顶板变形和崩落变化模式。岩层的竖向位移响应比水平位移更明显。在岩层塌陷期间，垂直位移急剧增加。另外，垂直位移速度显示出波动。同时，垂直位移加速度的波动显着增加。DDMITS可以实现三维变形的全场测量和非接触式测量。在岩层塌陷期间，垂直位移急剧增加。另外，垂直位移速度显示出波动。同时，垂直位移加速度的波动显着增加。DDMITS可以实现三维变形的全场测量和非接触式测量。在岩层塌陷期间，垂直位移急剧增加。另外，垂直位移速度显示出波动。同时，垂直位移加速度的波动显着增加。DDMITS可以实现三维变形的全场测量和非接触式测量。

更新日期：2020-10-22

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