Seepage prevention of mining-disturbed riverbed

Jin-an, Wang; Tang, Jun; Shen-hua, Jiao

doi:10.1016/j.ijrmms.2014.10.010

Cited by 6 publications

(2 citation statements)

References 22 publications

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“…e second method is the use of a physical model [5,[11][12][13][14] in the laboratory. is method has difficulty realizing the conditions of complex jointed rock mass, and it usually assumes that the rock mass is intact or simple (such as a coal seam).…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis for the Caving Characteristics of Rock Mass with Inclined Joints in Caving Mining

Sui

Ren

Cao

et al. 2021

Advances in Civil Engineering

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In caving mining, the successful initiation and propagation of caving require one low-dip joint set. However, not every mine has a low-dip joint set. The Hemushan Iron Mine in China was taken as the engineering background, and the caving characteristics of rock mass with inclined joints were analyzed based on the synthetic rock mass (SRM) model. First, the inclined joints were investigated in the Hemushan Iron Mine. Second, model parameters were determined based on the geological conditions of the mine, and seven models were established. Third, the caving process was simulated, and caving characteristics were monitored. For rock mass with inclined joints after undercutting, the research showed that the crack zone was significant, and the crack zone existed not only around the undercut area but also further away in the model. The stress concentration areas dispersed in the model except for the top of the undercut area. The caving line was not a standard arch, and the highest point of the caving line was biased towards the direction of the undercut. Under the same undercut width, with the decrease of joint length in the joint system, the number of cracks decreased, the degree of stress concentration became weaker, and the height of the caving line decreased.

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Section: Introductionmentioning

confidence: 99%

Numerical Analysis for the Caving Characteristics of Rock Mass with Inclined Joints in Caving Mining

Sui

Ren

Cao

et al. 2021

Advances in Civil Engineering

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“…Xia et al [20] used borehole monitoring technology to analyze the caving process of the goaf-roof and pointed out that the caving evolution was affected by the structural character of the rock mass. Wang et al [21] used a combination of on-site monitoring and numerical simulation to analyze the fracture development of the rock mass and surface subsidence characteristics near the riverbed and proposed the Four-Element Structure of antiseepage for the riverbed. Zhao et al [22] used microseismic technology to analyze the stability of goafs and slope during the transition from open-pit to underground mining and to study the rock failure mechanism.…”

Section: Introductionmentioning

confidence: 99%

Study on the Rock Mass Caving and Surface Subsidence Mechanism Based on an In Situ Geological Investigation and Numerical Analysis

Ren

Zhang

Cao

et al. 2018

Mathematical Problems in Engineering

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To deeply understand the mechanism of the rock mass caving and associated surface subsidence during sublevel caving mining, the Xiaowanggou iron mine was selected as an engineering project case study. The study area was analyzed by means of an in situ geological investigation and numerical simulation. First, a borehole television (BHTV) system and a GPS monitoring system were used to monitor the caving process of the roof rock mass and the development of the surface subsidence; the monitoring time was thirteen months. Then, a numerical simulation was used to analyze the damage evolution of the rock mass. Research shows the following: (1) in situ geological monitoring results indicate that the caving process of the roof rock mass presents intermittent characteristics, where slow caving and sudden caving are conducted alternatively and the arched-caving trend is more pronounced with continuous mining. The surface subsidence, horizontal displacement, and horizontal deformation of the hanging wall are higher than that of the footwall, and the subsidence center gradually deflects to the hanging wall in the late stage of the +45m sublevel mining. (2) Numerical simulation results indicate that the extension and penetration of the shear and tensile cracks along the joints and intact rock bridges are the main factors causing the rock mass caving and the existence of the stress arch and its evolution process is the fundamental reason for the intermittent caving of the rock mass. The rapid development of damage to the hanging wall (the damage angle reduced) is the main cause of the deflection of the subsidence center affected by joints and the mining size. (3) In the future of mining, large-scale subsidence will occur on the surface of the hanging wall.

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Failure Mechanism and Movement Characteristics of Overlying Strata in Longwall Mining Face with Thick Aquifer

Wang,

Kong,

et al. 2024

Rock Mech Rock Eng

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Seepage prevention of mining-disturbed riverbed

Cited by 6 publications

References 22 publications

Numerical Analysis for the Caving Characteristics of Rock Mass with Inclined Joints in Caving Mining

Numerical Analysis for the Caving Characteristics of Rock Mass with Inclined Joints in Caving Mining

Study on the Rock Mass Caving and Surface Subsidence Mechanism Based on an In Situ Geological Investigation and Numerical Analysis

Failure Mechanism and Movement Characteristics of Overlying Strata in Longwall Mining Face with Thick Aquifer

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