Study on Development Law of Mining‐Induced Slope Fracture in Gully Mining Area

Yang, Tao; Yang, Yiran; Zhang, Jie; Gao, Shoushi; Li, Tong

doi:10.1155/2021/9990465

Cited by 6 publications

(3 citation statements)

References 10 publications

(8 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides, previous studies have shown that different mining methods (Du and Gao, 2017;Zhou and Yu, 2022), mining parameters (Wang et al, 2020;Qi et al, 2022) and repeated mining of coal seams (Tian et al, 2019;Cheng et al, 2020) also affect the development height of water-conducting fracture zones. Based on a large number of engineering practices, different numerical analysis models (Zhang et al, 2017;Zeng et al, 2022), mechanical theoretical models (Ning et al, 2020;Zhu et al, 2020;Yang et al, 2021;Tan et al, 2022) and monitoring methods (Wang et al, 2016;Mondal et al, 2020) have been successively introduced into the prediction and exploration of the height of water-conducting fracture zones. In addition, some researchers have effectively observed the development of water-conducting fracture zones from the perspective of strain energy (Swift, 2013;Qi et al, 2019;Sainoki et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Study on prevention and control mechanism of runoff water hazard in thick coal seam mining in valley terrain

Zhang

Qian²,

Wang³

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

During the mining of thick coal seams under the gully slope, the mining-induced fractures are prone to connect with the gully runoff, which may induce potential water hazards and affect underground production. Based on the occurrence characteristics of coal seams and the landform in the gully-developed mining area, the coal seam mining under the slope of Na’er Coal Mine and Baoshan Coal Mine was taken as the engineering background, the seasonal runoff of gullies was considered as the influencing factors of the safe mining, and the spatial relationship between the working face and the gully slope was analyzed when the mining-induced fractures were connected with the gully surface and caused the gully runoff water disaster. The research results show that the occurrence structure of the gully slope has a greater impact on the strata movement of the slope. When the key layer is incomplete, the horizontal sliding and local block overturning of the slope rock strata are strong; when the key layer is complete, the horizontal sliding and local block overturning of the slope rock strata are weakened. According to the safety distance of the working face and the generalized model of safety coal pillar setting, the method of setting the safety coal pillar was used to prevent the connection of slipping cracks of the rock strata at the slope bottom and the gully surface during the slope mining, thus preventing the occurrence of runoff hazards during the thick coal seams mining in the valley terrain. The results can provide a theoretical basis and technical support for the prevention and control of seasonal runoff hazards, as well as a reference for the prevention and control of mining-induced landslides, water conservation mining, and ecological environment protection.

show abstract

Section: Introductionmentioning

confidence: 99%

Study on prevention and control mechanism of runoff water hazard in thick coal seam mining in valley terrain

Zhang

Qian²,

Wang³

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

show abstract

“…Compared with the pillar under peaceful terrain, when the ore bed is located in the valley terrain area, the study of pillar stability has its particularity [ 40 , 41 , 42 ]. Next, the influence of the spatial relationship of goaf and valley on the stability of the pillar is studied.…”

Section: Parameter Influence Analysismentioning

confidence: 99%

Study on Safety Coefficient of Sedimentary Bauxite Strip Pillar under Valley Terrain

Jiang

Jiao

Xie

et al. 2022

IJERPH

View full text Add to dashboard Cite

The underground sedimentary bauxite ore body in Shanxi province has a shallow burial depth; the valley terrain caused stress concentration on a pillar which affected the pillar’s safety and goaf stability. This paper proposed a pillar safety coefficient calculation method affected by the goaf structural parameters and the valley terrain, which was based on a pillar mechanics analysis under the valley terrain. The results show that the overlying valley terrain will cause stress concentration on the pillar, reducing the adequate bearing capacity and the pillar stability. The increase of the goaf span b and the height of the pillar h is extensively detrimental to pillar stability. Meanwhile, increasing the pillar burial depth would cause the pillar to weaken, but can effectively decrease the influence of the valley terrain. Furthermore, when the angle between the goaf strike and the valley strike β < 50°, β has a more significant impact on the stress concentration and safety coefficient. The stability of an underground sedimentary bauxite pillar is calculated by the method, the result complied with the actual situation.

show abstract

“…Zhang et al (2022b) divided fissures in a valley mining area into dynamic in-plane fissures and boundary fissures, revealing the contraction and closure characteristics of the dynamic in-plane fissures. Yang et al (2021) and Li J. W. et al (2022) analyzed the development characteristics of mining-induced fissures in a valley region and divided the overlying strata into three zones: the collapse fissure zone, the compacted fissure zone, and the vertical fissure zone. Li et al (2019) and Wang et al (2021) analyzed the mechanism of mine pressure manifestation and its mutual influence on surface geological hazards, revealing that the variation of stress in the gully area is among the necessary conditions for the occurrence of working face impact pressure.…”

Section: Introductionmentioning

confidence: 99%

Simulation study on surface deformation of shallow buried coal seam mining in a gully area

Wang,

Cai,

Zhang

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

Coal mining subsidence leads to frequent surface ecological and environmental problems. Due to the unique topographic conditions within gully areas, the deformation and damage characteristics, along with the evolution laws of the surface, have been difficult to analyze. To explore the surface movement and deformation law of shallow-buried coal seam mining in a gully area, this study designed a three-dimensional similar-material simulation test simulating the complete movement and deformation of the ground surface under real terrain conditions and proposed a complete data acquisition and processing scheme. Combined with the numerical simulation analysis, we utilized this scheme to analyze the dynamic influence law of coal seam mining in a gully area on the distribution of ground surface stress and displacement as well as on the dynamic characteristics of the ground surface damage. The results show that the existence of gully topography affects the stress distribution of the ground surface and the raw rock of the coal seams underneath and that there exists a stress concentration in the gully area of the ground surface. Furthermore, the mining activities of the coal seams lead to an increase in the degree of stress concentration in the gully area of the ground surface, and the slopes enter into the process of energy accumulation and sudden release, which makes the region prone to the occurrence of geological disasters such as landslides and collapses. In addition, the surface movement and deformation in the gully area are more intense, exceeding the plain area, and the surface movement is affected by the spatial location relationship between the mining area and the slope body, causing the center of the mining area to show obvious eccentricity characteristics. The results of this study provide a reference basis for the safe mining of coal mines in gully topography.

show abstract

Study on Development Law of Mining‐Induced Slope Fracture in Gully Mining Area

Cited by 6 publications

References 10 publications

Study on prevention and control mechanism of runoff water hazard in thick coal seam mining in valley terrain

Study on prevention and control mechanism of runoff water hazard in thick coal seam mining in valley terrain

Study on Safety Coefficient of Sedimentary Bauxite Strip Pillar under Valley Terrain

Simulation study on surface deformation of shallow buried coal seam mining in a gully area

Contact Info

Product

Resources

About