Introduction to the Special Issue “Rock Mechanics Advances in China Coal Mining”

Zhang, Zhenyu; Barla, Giovanni Battista

doi:10.1007/s00603-019-01904-7

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…At present, the rock samples used in the tests cannot easily reflect the original occurrence environments and stress paths in deep mines; deep field engineering requires long periods of time, and there is a lack of large-scale in situ monitoring research; therefore, the stress paths used in the laboratory tests are not consistent with the field [2]. In deep mines, the thick and hard bottom layer will produce higher mining stress, which will cause coal and rock roadways to produce larger deformation and even rock burst [3].…”

Section: Introductionmentioning

confidence: 99%

The Effects of True Triaxial Loading and Unloading Rates on the Damage Mechanical Properties of Sandstone

Wang

et al. 2022

Sustainability

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Coal is the main energy source in China. In the process of coal resource mining, the surrounding rock of roadways is often in the complex stress environment of “three heights and one disturbance”. At the same time, rocks in the stratum are often in a three-way unequal pressure state under the action of geological structure, and conventional rock mechanics tests cannot study the mechanical properties of rocks under actual stress conditions; thus, this is based on the self-developed true triaxial multifunctional fluid–structure coupling test system to study the damage mechanical Properties of Sandstone. The results are shown as follows: With an increase in loading rate, the peak damage Dcr of sandstone decreases, but the initial damage Da increases in the elastic stage, and the brittleness of sandstone weakens. With the increase in the unloading rate, Dcr increases, but Da decreases in the elastic stage, and the sandstone brittleness increases first, then decreases. In addition, the peak maximum principal strain ε1maxfirst decreases rapidly and then slowly; the peak minimum principal strain ε3max increases first, then decreases slowly, and increases slowly; the peak intermediate principal strain ε2max decreases slowly; and the peak volume strain εvmax increases rapidly first and then slowly with increases in the loading rate. With an increase in the unloading rate, ε1max increases rapidly first, then decreases slowly, then increases rapidly and finally increases slowly; ε3max first decreases slowly, then increases slowly, and finally decreases slowly; and ε2max increases slowly then decreases slowly. εvmax decreases rapidly first and then increases slowly with increasing loading rate.

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Section: Introductionmentioning

confidence: 99%

The Effects of True Triaxial Loading and Unloading Rates on the Damage Mechanical Properties of Sandstone

Wang

et al. 2022

Sustainability

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“…With the continuous mining of coal resources, there are fewer and fewer coal seams that are easy to excavate. Currently, most coal mining activities in China have become deep mining activities (Zhang et al 2019;Xie et al 2018). The stress environment of deep surrounding rock is complex (Yu et al 2019), which greatly increases the difficulty of resource exploitation.…”

Section: Introductionmentioning

confidence: 99%

“…Compared with other roadways, the stress environment of support components in isolated working faces is more complex. 1 CONTACT Pengcheng HUANG, huangpengcheng@student.cumtb.edu.cn, School of Mechanics and Civil Engineering, China University of Mining and Technology (Beijing), Ding No. 11, Xueyuan road, Haidian District, Beijing, 100083 P. R.China.…”

Section: Introductionmentioning

confidence: 99%

Research on the full-section anchor cable and C-shaped tube support system of mining roadway in island coal faces

Shan

Huang

Yuan

et al. 2021

Journal of Asian Architecture and Building Engineering

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Study on characteristics of pressure relief by roof cutting under nonpillar-mining approach

Liu

Guo

et al. 2022

Bull Eng Geol Environ

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Introduction to the Special Issue “Rock Mechanics Advances in China Coal Mining”

Cited by 3 publications

References 13 publications

The Effects of True Triaxial Loading and Unloading Rates on the Damage Mechanical Properties of Sandstone

The Effects of True Triaxial Loading and Unloading Rates on the Damage Mechanical Properties of Sandstone

Research on the full-section anchor cable and C-shaped tube support system of mining roadway in island coal faces

Study on characteristics of pressure relief by roof cutting under nonpillar-mining approach

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