Preliminary study on construction of visual database for structural morphology and mechanical properties of coal and rock cracks

被引：0
|
作者：
Wang H. [1 ,2 ]
Zhang C. [1 ]
Song J. [1 ]
Wang Z. [1 ]
Pan Y. [1 ]
机构：
[1] School of Mechanics, Architecture and Civil Engineering, China University of Mining and Technology-, Beijing
[2] State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology-Beijing, Beijing
来源：
Meitan Kexue Jishu/Coal Science and Technology (Peking) | 2023年 / 51卷
关键词：
cracks morphology; database; intelligent identification; properties classification; visualization;
D O I：
10.13199/j.cnki.cst.2022-1328
中图分类号：
学科分类号：
摘要：
The occurrence status, structural morphology and mechanical properties of cracks in coal and rock have a significant impact on its material strength, deformability and impact resistance. Determining the spatial geometry, spreading form and mechanical properties of cracks are of great important both in theory and engineering application for studying the mechanical properties of coal and rock, and the construction of visual database of cracks morphology and mechanical properties of coal and rock mass can provide new idea and research direction for study the identification of crack morphology diversity. Starting from the concept of database and the basic method of establishing a database, the basic idea of the construction of visual database of cracks is designed, a one-to-many mapping relationship between coal-rock mass and crack entities is established, and the basic database framework including the intelligent acquisition of crack multisource data, intelligent classification and storage of crack properties and visual analysis and implementation of morphological structure is constructed. The features such as intelligent identification of cracks morphology in visual database, multi-angle discrimination based on classification properties of structural morphology and crack mechanics, visualization of the distribution form of geometric structures and intelligent transmission of crack properties based on bar code and QR-code is realized. The project background is Da’anshan coal mine of Beijing Haohua Energy Resource Co., Ltd. Coal rock samples in complex geological formations such as thrust faults and reversed folds were obtained. The 3D digital model of several cracks was extracted by CT scanning, image analysis processing and 3D reconstruction. Combined with different attribute classification standards, the morphological characteristics, distribution location and geometric characteristics of cracks are calculated and classified based on the intelligent recognition algorithm. In addition, the basic module of visualized database of coal and rock crack is established, the crack retrieval and data entry are carried out, and the binding morphology of the crack structure is demonstrated, laying a foundation for the establishment of visual database. © 2023 Coal Science and Technology. All rights reserved.
引用
收藏
页码：27 / 39
页数：12
相关论文
共 36 条
  • [1] WANG Hongwei, WANG Zeliang, JIANG Yaodong, Et al., New approach for the digital reconstruction of complex mine faults and its application in mining[J], International Journal of Coal Science and Technology, 9, 3, (2022)
  • [2] WANG Dengke, ZHANG Ping, WEI Jianping, Et al., Research on dynamic evolution of 3D fracture structure of loaded coal body based on CT visualization[J], Journal of China Coal Society, 44, S2, pp. 574-584, (2019)
  • [3] LIU Yulong, TANG Dazhen, XU Hao, Et al., Description of coal reservoir heterogeneity under different lithotypes based on X-CT technology[J], Coal Science and Technology, 45, 3, pp. 141-146, (2017)
  • [4] LIU Guofang, SONG Xuanmin, HUO Yuming, Micro-structure numerical reconstruction of fractured coal body based on CT technology[J], Mining Research and Development, 40, 8, pp. 155-159, (2020)
  • [5] ZHANG Ping, WANG Dengke, YU Chong, Et al., Digital coal core construction process and crack characterization based on industrial CT scanning[J], Journal of Henan Polytechnic University (Natural Science), 38, 6, pp. 10-16, (2019)
  • [6] CAI Yan, Dan LIU, MATHEWS J P，, Et al., Permeability evolution in fractured coal-Combining triaxial confinement with X-ray computed tomography, acoustic emission and ultrasonic techniques[J], International Journal of Coal Geology, 122, (2014)
  • [7] ZHAO Yanlin, LIU Qiang, LIU Huan, Et al., Triaxial compression and acoustic emission tests on single cracked limestone and compression-shear fracture model under hydraulic-mechanical coupling action[J], Journal of China Coal Society, 46, 12, pp. 3855-3868, (2021)
  • [8] QIN Nan, ZHANG Zuoliang, FENG Xuezhi, Et al., Study on uniaxial strength and crack propagation law of cracked similar rock after creep[J], Coal Science and Technology, 48, 12, pp. 244-249, (2020)
  • [9] WANG Li, Effect of initial flaw on tensile properties of rock[J], Coal Science and Technology, 48, S1, pp. 66-70, (2020)
  • [10] NIU Xingang, Impact analysis of the open type crack characteristics of coal and rock burst[J], IOP Conference Series:Earth and Environmental Science, 208, 1, pp. 1-7, (2018)
1234