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A simulation algorithm for material flow from open pit mine to power plant: A case study
Published in G. N. Panagiotou, T. N. Michalakopoulos, Mine Planning and Equipment Selection 2000, 2018
In mining, simulation models are mostly used for surface and underground production scheduling, truck haulage system, belt conveying and processing (Yingling, 1992, Ramani, 1990, Albert, 1989, Beckett, Haycocks and Lucas, 1979).
Study on CBM and tight sandstone gas co-mining feasibility- take the Linfen block on the eastern edge of the Ordos Basin as an example
Published in Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2023
Shuangxi Zhu, Dazhen Tang, Song Li, Hao Xu, Shu Tao, Yanfei Liu
Using Eclipse, the model for non-channeling and co-mining of the coal seam and sandstone is established (Figure 2). The model consists of two sets of reservoirs. The upper reservoir is composed of coal, the lower reservoir is composed of sandstone, and the middle layer is a non-permeable interlayer. Eclipse uses a dual pore model, with the upper three layers as matrix and the lower three layers as fractures (Lisandy et al. 2016; Meng, Li, and Lai 2015). During the co-mining simulation process, model strata are divided into regions. The first and third layers, which are divided into No.1, are defined as coal seam. The second and fifth layers are divided into No.2 and are defined as interlayer. The third and sixth layers are divided into No.3 and defined as sandstone layers. Sandstone and coal output can be obtained by dividing the output of the results. In order to discuss the feasibility of co-mining in the Linfen area, according to the geological conditions of coal and sandstone reservoirs in Linfen block, model parameters are designed with several sets of parameters changes in order to correspond with and summarize the real geological conditions in the study area. The feasibility of single well in the Linfen block is discussed on the basis of regional regularity change (Table 1).
Layout optimization of crushing station in open-pit mine based on two-stage fusion particle swarm algorithm
Published in Engineering Optimization, 2021
Qinghua Gu, Xuexian Li, Lu Chen, Caiwu Lu
In an open-pit mining boundary, the ore body is partitioned into discrete 3D mining blocks. According to the actual production situation, the size of the block is determined by considering the height of the workbench, the scale of the boundary and the accuracy of the model. For example, the bench height is generally 12 m in most metal open-pit mines. In this article, the block size is divided into 10 m in length, 10 m in width and 6 m in height at the boundary, and each block is the minimum mining unit after division. At the intersection of the boundary and ore body, the ore body is split into smaller sub-blocks to improve the precision of the mining simulation, the size of which is 5 m in length, 5 m in width and 3 m in height at the open-pit mine border. After partitioning, the ore body is divided into a 3D block production model containing n sub-blocks. The mining steps are simulated using the model according to the spatial and temporal sequence, i.e. forming a 3D production scheduling model (Figure 2).
Study on overburden failure characteristics in deep thick loose seam and thick coal seam mining
Published in Geomatics, Natural Hazards and Risk, 2020
Weitao Liu, Lifu Pang, Baichao Xu, Xi Sun
With advancement of the working face, the stress on the overlying primary rock layer is affected by the mining. The mining simulation of the working face is carried out according to the established numerical model for thick and loose thick coal seams. With reference to the measured rock mechanics parameters in the Zhaolou coal mine, the mechanical parameters of the top and bottom rock layers in the model coal seam are determined (Liu et al. 2019). The simulation data of the working surface propulsion distance at 50 m, 60 m, 70 m, 80 m, 90 m, and 100 m is extracted (Goryunov et al. 1993). By analyzing the shape of the plastic failure zone and the vertical stress pattern of the overlying strata in the vertical direction and the direction of the working face, the distribution of the overburden strata and the development height of the water-conducting fracture zone are obtained.