Research on Deep Joints and Lode Extension Based on Digital Borehole Camera Technology

Han, Zhengsheng; Wang, Chuanying; Zhu, Hengyin

doi:10.1515/pomr-2015-0025

Cited by 16 publications

(5 citation statements)

References 3 publications

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“…This method has many advantages in determining the breakage height and time of the overburden strata and visualizing the morphology and size of mining-induced fractures. Hence, the borehole television approach has been widely applied to identify lithology, determine coal seam thickness, and to observe the separation of roadway roofs and deformation of surrounding rocks [12][13][14][15][16]. Tan et al used a borehole camera technology to explore the zonal disintegration developing process in roof strata influenced by multiple mining activities [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Visual Exploration of the Spatiotemporal Evolution Law of Overburden Failure and Mining-Induced Fractures: A Case Study of the Wangjialing Coal Mine in China

et al. 2017

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Abstract:The borehole television approach is an effective way of detecting mining-induced fractures in overburden strata as it can visualize fractures to facilitate a quantitative analysis of size, quantity, length, and other features. In this article, the borehole television approach is applied on panel 20105 of the Wangjialing Coal Mine in China to investigate the overburden movement and spatiotemporal evolution law of mining-induced fractures from the coal seam to ground surface. The results revealed that the overburden strata experienced the phases of roof caving, generation of fracture, bed separation, dislocations, fracture propagation, surface subsidence, and closing of fractures. The process can be divided into the initiation stage, the active stage, and the degradation stage along the mining direction. For exploited working faces, the caved zone height is 2.9-4.11 times the mining height, and the height of the fractured zone is 19. 35-22.19 times the mining height. The height range of the three parts in the fractured zone is 24-26, 40-45, and 30-35 m. Significant fractures were observed in the bending zone.Step subsidence and cracks, which indicate severe damages, were observed on the ground surface above the goaf.

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Section: Introductionmentioning

confidence: 99%

Visual Exploration of the Spatiotemporal Evolution Law of Overburden Failure and Mining-Induced Fractures: A Case Study of the Wangjialing Coal Mine in China

et al. 2017

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“…The Digital Panoramic Borehole Camera System (DPBCS) as shown in Figure 1 is a combination of electronic, video and digital computer technology (Han et al 2015(Han et al , 2013Haq et al 2016;Wang et al 2009). It captures real image of borehole rock wall, which is postprocessed by analysis software to create virtual rock core model and 360° unfolded image as shown in Figure 2, as well as describe the structural plane dip, dip direction and other occurrence elements.…”

Section: Terdapat Sejumlah Besar Struktur Satah Utama Dalam Bijih Batmentioning

confidence: 99%

Connectivity Analysis of Magnetic Mineral Veins Based on Multi-boreholes Image

Han¹,

Wang²,

Hu³

2017

JSM

Self Cite

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“…Finally, the panoramic view of the borehole is obtained, which shows the borehole information intuitively, and can measure and count the information in the borehole manually or by computer to realize the quantitative analysis of the information in the borehole, such as the crack width. Now, it has been successfully used in some engineering examples [6] . This paper studies the images collected by the front view borehole camera.…”

Section: Introductionmentioning

confidence: 99%

Research on the processing algorithm of drilling image

Yuan

2023

Eighth International Conference on Electronic Technology and Information Science (ICETIS 2023)

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In geological exploration, the texture and context information generated by different rocks on the inner wall of the drilling hole is of great significance to understand the geological condition. Drilling camera technology can obtain digital drilling video and hole wall images. For a long time, the method of manual interpretation is the main method of studying hole wall images. This method has problems such as poor real-time performance and low work efficiency .In this paper, the processing algorithm is designed based on the imaging characteristics of hole wall image and the method of digital image processing, including image preprocessing, image expansion and image stitching. First, the radius of the area is determined according to the image features, and then the concentric circle expansion method is used to obtain the rectangular expansion image. Finally, the SIFT feature point is used to complete the accurate matching with the Ransac algorithm, and use weighted average method to complete image fusion. The entire algorithm can obtain a panoramic expansion image of the hole wall area, laying the foundation for the quantitative analysis of drilling data.

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Research on Deep Joints and Lode Extension Based on Digital Borehole Camera Technology

Abstract: ABSTRACT

Cited by 16 publications

References 3 publications

Visual Exploration of the Spatiotemporal Evolution Law of Overburden Failure and Mining-Induced Fractures: A Case Study of the Wangjialing Coal Mine in China

Visual Exploration of the Spatiotemporal Evolution Law of Overburden Failure and Mining-Induced Fractures: A Case Study of the Wangjialing Coal Mine in China

Connectivity Analysis of Magnetic Mineral Veins Based on Multi-boreholes Image

Research on the processing algorithm of drilling image

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