Open AccessMonitoring Deep Mining Similarity Material Model of Super-Thick and Weak Cementation Overburden by Digital Photography
Author(s) -
Guojian Zhang,
Yi’nan Lv,
Guangli Guo,
Chengxin Yu
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/782/2/022028
Subject(s) - overburden , photogrammetry , cementation (geology) , similarity (geometry) , computer science , process (computing) , geology , mining engineering , artificial intelligence , geography , image (mathematics) , archaeology , cement , operating system
In this paper, the similarity material model is conducted to investigate the movement law and failure pattern of the super-thick weak cementation overburden. In addition, the photographing scale transformation-time baseline parallax (PST-TBP) method and the Xi’an Jiaotong University Digital Close-range Industrial Photogrammetry System (XJTUDP) software were used to monitor similarity material model. The findings can be summarized as follows: (1) To some extent the PST-TBP method can make up for the deficiency of the XJTUDP software because its measurement accuracy is about 0.5mm; (2) The first breaking span of the immediate roof reached 240m, and the cyclic fracturing length was about 60m. It still shows the characteristics of the inadequate mining when the surface reaches fully mining. It needs more mining space to reach fully mining; (3) The (PST-TBP) method and the XJTUDP measurement system provide technical support to study the dynamic development process of regional deformation caused by deep mining.