Energy Science & Engineering, 2023 AbstractTo study the fracture law of different overlying strata during mining of the lower protective seam under a close distance coal seam at a depth of 1000 m, roof bed‐separation and fissure imaging monitoring were carried out in the inlet roadway ahead of the working face of the JI15‐31040 lower protective seam in the Pingdingshan XII coal mine ...
Yingwei Wang +4 more
openaire +2 more sources
Advances in Civil Engineering, 2021 In Northwest China, rainfall is low, water resources are scarce, and the ecological environment is fragile. For shallow-buried and close-spaced coal seams with a thickness of upper coal bed >60∼70 m, the water-conducting fissures of the overlying rock ...
Zhiyuan Jin, Tao Peng
doaj +1 more source
Study on sub-regional control of fully mechanized top-coal caving roadway under close irregular goa
Meikuang Anquan, 2023 In order to solve the control problems of large deformation of roadway surrounding rock in close coal seams, taking the fully mechanized top-coal caving roadway in close thick coal seams under irregular goaf of Xiaoyu Coal Mine as the engineering ...
LIU Huabo +3 more
doaj +1 more source
Energies, 2022 Aiming at the problem that it is difficult to achieve accurate laying of model and precise excavation of roadways in special surrounding rock structure roadway according to conventional physical similarity simulation, which reduces the reliability of ...
Pengze Liu +9 more
doaj +1 more source
Study on Stability of Stope Surrounding Rock under Repeated Mining in Close-Distance Coal Seams [PDF]
Geofluids, 2022 In order to study the influence of roof stress and fracture distribution characteristics on the stability of stope surrounding rock under repeated mining in close-distance coal seams, the research background of this paper is the close-distance coal seam mining of a mine in Guizhou province, China.
Qiang Li, Guiyi Wu, Dezhong Kong
openaire +2 more sources
Prevention and control technology and goaf spontaneous combustion index in distance coal seams
Meikuang Anquan, 2022 In order to study the spontaneous combustion law of close distance easy spontaneous combustion coal seams, taking the mining face of Bulianta Mine No.22 coal seam 3# panel as an example, collected No.22 coal seam samples of Bulianta Mine, three particle ...
GUO Haixiang
doaj +1 more source
Floor failure depth of upper coal seam during close coal seams mining and its novel detection method
Energy Exploration & Exploitation, 2018 The primary problem needed to be solved in mining close coal seams is to understand quantitatively the floor failure depth of the upper coal seam. In this study, according to the mining and geological conditions of close coal seams (#10 and #11 coal ...
Wei Zhang +5 more
doaj +1 more source
Support Control Design of Mining Roadway under Goaf of Close-Distance Coal Seam
Sustainability, 2023 Coal resources have always been the focus of attention in the field of sustainable development. Based on the problem of surrounding rock control in close-distance coal seams, first, a mechanical model of floor failure was established based on the 29204 working face in Dongqu Mine; the failure mechanism of the floor was revealed by the zero displacement
Lu, Guozhi, Ni, Ping
openaire +1 more source
Radiometric Constraints on the Timing, Tempo, and Effects of Large Igneous Province Emplacement
Geophysical Monograph Series, Page 27-82., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Jennifer Kasbohm +2 more
wiley +2 more sources
Shock and Vibration, 2020 Numerical simulations have often been used in close-distance coal seam studies. However, numerical simulations can contain certain subjective and objective limitations, such as high randomness and excessively simplified models.
Zhuoyue Sun +5 more
doaj +1 more source