Overburden management in open pits: options and limits in large limestone quarries

Oggeri, Claudio; Fenoglio, Taddeo Maria; Godio, Alberto; Vinai, Raffaele

doi:10.1016/j.ijmst.2018.06.011

Cited by 42 publications

(35 citation statements)

References 17 publications

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“…-in the case of land reclamation, mining reclamation [17] and filling the mechanical performances are less challenging, while chemical issues become more relevant in the view of avoiding the production of new leachate and diffusion of minor contaminants ;…”

Section: Recycling Issues For Non-conventional Materialsmentioning

confidence: 99%

Characterisation of geomaterials and non-conventional waste streams for their reuse as engineered materials

Oggeri

Vinai

2020

E3S Web Conf.

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Reusing bulk volumes of waste material is a requirement often encountered in mining and construction activities involving excavations. Spoils produced from these activities typically show high variability in terms of properties and behaviour, due to the local geology, adopted excavation method and further spoil treatments. A procedure for classifying the spoil from tunnelling was proposed in order to correlate ground type, possible muck destination and treatment type. With a similar approach in industrial and related sectors, the reuse of non-conventional materials (i.e. wooden chips, fragments, granulates, micronized glass, residual out of shape from manufacturing processes or coming from selection of other waste) has a great relevance as it is accompanied by savings in disposal costs and in the sourcing of raw materials. Characterisation tests derived from geotechnical engineering can support the assessment of the physical and mechanical properties of non-conventional materials, creating a feedback loop encompassing raw material description, required treatments, and possible utilisations as engineered materials. This paper describes the possible screening tests and treatment options for material recycling in the framework of a modified spoil classification system.

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Section: Recycling Issues For Non-conventional Materialsmentioning

confidence: 99%

Characterisation of geomaterials and non-conventional waste streams for their reuse as engineered materials

Oggeri

Vinai

2020

E3S Web Conf.

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“…In addition, building similar physical models by using similar material ratios and simulating complex underground large-scale engineering problems indoors are also widely used in the field of geology [10,[14][15][16][17][18][19]. Guo et al [20] successfully simulated the evolution of water inrush fissures and the process of water inrush in a mining area by using a similar material physical model and put forward effective preventive measures for water inrush from the floor.…”

Section: Introductionmentioning

confidence: 99%

Self-Designed Hydrophilicity-Related Geomaterials and Their Testing Utility in Simulation of Overlying Strata Instability

Zha

Liu

2019

Advances in Materials Science and Engineering

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This paper mainly involved the testing of self-designed hydrophilicity-related geomaterials and application of overlying strata monitoring in a mining area in Northwest China. We employed the orthogonal testing technique to select the ingredient ratio of hydrophilicity-related geomaterials and optimized the mechanical properties of materials, such as density, elastic modulus, Poisson ratio, compressive strength, tensile strength, and water absorption rate on the basis of regression analysis. It can be seen that the proportion of the mixture clearly determines the mechanical properties of similar materials. Among them, the content of silicone oil and the cement-Vaseline ratio have the most obvious effects on the mechanical properties of the material. By using the hydrophilicity-related geomaterials with ingredient optimization, we built a physical model to simulate the failure progress of the workface in one of the coal mines in Northwest China. It was shown that three remarkable characteristic parts, including collapse zone, fissure zone, and layer-separating space, appear in the overlying strata. Furthermore, the fractured zone above the separating band is just located under the main aquifer. Finally, compared with in-field data, it was verified that the height of the collapse zone and water-guiding fissure zone measured at three boreholes are in good agreement with the experiment. Thus, the failure mode of overburden and the vertical stress and displacement changes are consistent with the actual engineering. Self-developed hydrophilicity-related geomaterials can be applied to laboratory physical simulation experiments of overlying strata. It provides the basis for future research on large-scale physical water-containing similar simulation experiments.

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“…For better economic benefits and lower cost, inpit dumping with end-wall slope partially covered has been proven to be effective [14], with the disadvantage of extra costs when materials transferred from the uncovered zone [15,16]. e overburden management [17], dumping scheduling [18][19][20], mining depth, bottom width and inpit dumping cover height [21,22] will be the main research focus for a long time. Also, biological reclamation was brought out to keep the long term stability of overburden dump slope, with the numerical modeling analyzed to be feasible [23,24].…”

Section: Introductionmentioning

confidence: 99%

Research on Inpit Dumping Height during Tracing Mining Period between Two Adjacent Surface Coal Mines

Hong-ge

Ding

2018

Advances in Civil Engineering

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When two adjacent surface mines are simultaneously mined in the same direction with a certain relationship of the time and space, the mining arrangement of the former mine will greatly affect the mining plan and economic benefit of subsequent surface mine. In this paper, the optimized mathematical model is established with the mining conditions and economic benefits taken into account. e minimum cost of objective function is analyzed in the condition of considering the different transportation distance with different dumping amount and secondary stripping amount. At the end of this paper a conclusion is drawn that the reasonable dumping level is determined as 1130 based on the annual planning project location and stripping amount, which will reduce the cost of production and smooth the coal mining. Moreover, it is verified by an example to be correct that the mathematical model can be used to solve similar problems of tracing mining or adjacent districts mined in surface mines.

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Overburden management in open pits: options and limits in large limestone quarries

Cited by 42 publications

References 17 publications

Characterisation of geomaterials and non-conventional waste streams for their reuse as engineered materials

Characterisation of geomaterials and non-conventional waste streams for their reuse as engineered materials

Self-Designed Hydrophilicity-Related Geomaterials and Their Testing Utility in Simulation of Overlying Strata Instability

Research on Inpit Dumping Height during Tracing Mining Period between Two Adjacent Surface Coal Mines

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