Characteristics, detection, and prevention of karst sinkholes: a case study in Laiwu iron ore mine areas, Shandong Province, China

Yin, Huiyong; Shi, Yongli; Niu, Huigong; Chi, Ma; Liu, Guolu; Zhai, Peihe; Zhang, Jie

doi:10.1007/s12665-018-7310-0

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…Since China is the world's largest mineral resources producer, 95% of its mineral resources come from wells. In-depth study of mine utilization methods in order to obtain more mineral resources to support national construction and many mines in China have been developed at depths of more than 900-1300 meters, so high temperature heat loss in mines is an urgent need to solve the problem [7,8].…”

Section: Inductionsmentioning

confidence: 99%

Application of Nanoporous Super Thermal Insulation Material in the Prevention and Control of Thermal Hazards in Deep Mining of Metal Mines

Xiao

Deng

Xie

et al. 2022

Journal of Nanomaterials

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As an important energy material, mineral resources have an important role in the rapid growth of the national economy. In recent years, with the enhancement of mining strength and the improvement of mechanized production level, the depth of mining has also increased year by year. Therefore, the number of heat hazards in deep mine mining has increased year by year, and the problem of heat loss in deep mines has become increasingly prominent, which has seriously affected the safe and efficient production of mines. In this paper, the application of nanoporous super insulation materials in the prevention of thermal damage in deep mining of metal mines is studied, and the related theories of nanoporous super insulation materials and the prevention of thermal damage in deep mining of metal mines are understood on the basis of literature data. Nanoporous thermal insulation materials refer to thermal insulation materials with pore diameters in the nanometer range. This material can effectively prevent the collision of gas molecules and prevent the heat conduction of the gas. Then, the application experiment of nanoporous super thermal insulation materials in the prevention and control of heat damage in deep mining of metal mines is carried out. Through experiments, it is concluded that the room temperature thermal conductivity of the experimental material decreases with the increase of the addition of SiO2 aerogel, and the downward trend is linear, and when the heat source temperature is 200°C, the coating surface temperature of the thermal insulation material (excluding aerogel) is 100°C, and the thermal insulation temperature difference is 100°C, while when the coating surface temperature of the aerogel thermal insulation coating is only 60°C, the thermal insulation temperature difference is 140°C. From these data, it can be seen that the thermal insulation performance of nanoporous super thermal insulation materials is better, which verifies the feasibility of its application in the prevention of heat damage in metal mine mining.

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Section: Inductionsmentioning

confidence: 99%

Application of Nanoporous Super Thermal Insulation Material in the Prevention and Control of Thermal Hazards in Deep Mining of Metal Mines

Xiao

Deng

Xie

et al. 2022

Journal of Nanomaterials

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“…Their morphologies, structures, hydrology and development have been investigated based on field observations (Zhu and Chen 2006;Palmer and Palmer 2006;Kaufmann and Romanov 2016), modelling approach (Gabrovšek and Stepišnik 2011;Parise and Lollino 2011;Hiller et al 2014;Al-Halbouni et al 2018; and geophysical mapping (Kaufmann 2014;Kaufmann and Romanov 2016). They have been documented in China (Zhu and Chen 2006;White and White 2006;Yin et al 2018); Italy (Waltham 2006;Caramanna et al 2008); Obruk Plateau, Turkey (Waltham 2015); and, in the Dinaric Karst, Bosnia and Herzegovina (Kranjic 2006;Stepišnik and Grlj 2018). Waltham (2006) documented 26 giant collapse dolines 'Tiankengs' in different places, such as Nakanai, New Britain, southeast Asia Islands, Brazil, and Mexico.…”

Section: Introductionmentioning

confidence: 99%

Development of collapse dolines in Al Jabal Al Akhdar, NE Libya: geomorphic analysis and numerical modeling-based approach

Elshaafi

Bilal

Awami³

et al. 2021

Carbonates Evaporites

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Al Jabal Al Akhdar anticlinorium, NE Libya, has the most extensive and diversified karstic features. Collapse dolines are among the most prominent karst phenomena with many of them developed during the Holocene. This research uses field observations and numerical modelling to understand the geometry and formation mechanisms of these dolines. Detailed measurements of 66 collapse dolines including locations, elevations and dimensions (diameters and depths) are documented herein. The dolines have diameters ranging from several meters to tens of meters, while their depths vary from few meters to over a hundred meters. Some giant dolines can be classified as "Tiankengs". The dolines have average diameter of 55 m and height/depth of 60 m. There is a strong linear correlation between dolines areas and volumes with a determination coefficient (R 2 ) of 0.88. When 65 collapse dolines in China are added to the dataset for comparison, the correlation becomes R 2 = 0.83. This geometric similarity may suggest an analogous mechanism of their development. This research reveals that these dolines developed from the enlargement of fractures and bedding planes, forming various sizes of cavities in the sub-surface through chemical weathering. The subsequent collapse of the roof of these enlarged voids was most likely influenced by local stress fields around them, leading to extensive extension and shear fractures. Numerical models suggest that the local stress field favoured rupture and fracture propagation, once tensile and shear stresses exceed the tensile and shear strengths of the host rocks, thus causing the breakdown and the formation of collapsed dolines.

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Air pressure law of a reservoir constructed in karst sinkholes

Yu,

Tai,

Zheng

et al. 2024

J. Mt. Sci.

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Characteristics, detection, and prevention of karst sinkholes: a case study in Laiwu iron ore mine areas, Shandong Province, China

Cited by 5 publications

References 33 publications

Application of Nanoporous Super Thermal Insulation Material in the Prevention and Control of Thermal Hazards in Deep Mining of Metal Mines

Application of Nanoporous Super Thermal Insulation Material in the Prevention and Control of Thermal Hazards in Deep Mining of Metal Mines

Development of collapse dolines in Al Jabal Al Akhdar, NE Libya: geomorphic analysis and numerical modeling-based approach

Air pressure law of a reservoir constructed in karst sinkholes

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