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Contribution of Mineral Impurities to Coalbed Methane Accumulation and Retention 矿物杂质对煤层气积聚和滞留的影响
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050010
V. N. Zakharov, E. V. Ul’yanova, O. N. Malinnikova

Abstract

The implemented research shows that coalbed gas content in face area is proportional to pyrite content of coal, calculated with respect to iron and sulfur contents determined on X-ray fluorescent spectrometer. These results confirm the hypothesis on methane formation in coal during recovery of carbon oxides in the presence of iron-bearing minerals, in particular, pyrite, and water, and explain different contents of methane in the same rank coals. The obtained inverse proportion between the coalbed gas content in the face area and the sorption surface of coal allows supposing that methane accumulations concentrate mainly in the "solid solution" and in the closed porosity, i.e. in the coal structure. For this reason, it is more difficult and longer to recover such methane from coal than methane accumulated in open pores and fractures, which quickly leaves coal in face area.

摘要 已实施的研究表明，工作面煤层气含量与煤中黄铁矿含量成正比，黄铁矿含量是根据 X 射线荧光光谱仪测定的铁和硫含量计算得出的。这些结果证实了在含铁矿物（尤其是黄铁矿）和水存在的情况下，煤炭中的碳氧化物在回收过程中形成甲烷的假设，并解释了同等级煤炭中甲烷含量不同的原因。根据工作面煤层气含量与煤的吸附面之间的反比，可以推测甲烷的积聚主要集中在 "固溶体 "和封闭孔隙中，即煤的结构中。因此，与积聚在开放孔隙和裂隙中的甲烷相比，从煤炭中回收这种甲烷的难度更大、时间更长，因为甲烷很快就会离开工作面区域的煤炭。
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引用次数: 0
Improvement of Local Rockburst Control Equipment in Mineral Mining 矿产开采中局部岩爆控制设备的改进
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050198
I. Yu. Rasskazov, P. A. Anikin, A. P. Grunin, D. S. Migunov, A. A. Tereshkin

Abstract

As a result of hardware updating of Prognoz-L based on the modern electronic engineering and the accumulated experience, rock mass express-evaluator Prognoz-L.2 has been designed. The test data of the evaluator are presented as a case-study of a rockburst-hazardous mineral deposit.

摘要 根据现代电子工程学和积累的经验对 Prognoz-L 进行硬件更新后，设计出了岩体快速评估仪 Prognoz-L.2。评价器的测试数据以岩爆危险矿床为例进行了介绍。
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引用次数: 0
Modeling Rock Fracture in Closely Spaced Perimeter Blasting 近距离周边爆破中的岩石断裂建模
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050083
E. N. Sher

Abstract

The article presents the design model and results for the main crack development in closely spaced blasting in brittle rocks. The 3D modeling is described as case-study of crack formation in granite in perimeter blasting of ammonite charges at different spacing and filling of blastholes. The shapes and sizes are determined for the main cracks generated by blasting of single charge and three close-spaced charges. From the modeling results obtained for a specific charge, the method is proposed to determine efficient spacing of blastholes in perimeter blasting to ensure the maximal area of the created crack.

摘要 本文介绍了脆性岩石近间距爆破中主裂缝发展的设计模型和结果。三维建模以花岗岩中不同间距氨石装药周向爆破和爆破孔填充时裂缝形成的案例研究为基础。确定了单个装药和三个间距较近的装药爆破产生的主要裂缝的形状和尺寸。根据特定装药的建模结果，提出了在周边爆破中确定有效爆破孔间距的方法，以确保产生的裂缝面积最大。
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引用次数: 0
Electromagnetic Emission Associated with Fracture of Rock Samples 与岩石样本断裂有关的电磁辐射
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050204
A. A. Bizyaev, A. G. Vostretsov, I. I. Smirnyagin, M. D. Sharapova

Abstract

The article presents the fracture test data of rock samples with the porphyroblastic, granoblastic lepidoblastic and laminated structure. The tests were carried out on lab-scale tester ASI-2. The test samples were subjected to uniaxial compression until discontinuity with synchronous recording of associated electromagnetic emission, load and displacements along the compression axis. The laminated rock samples in fracture show anisotropy of geophysical parameters and electromagnetic emission.

摘要 本文介绍了具有斑岩、粒岩、鳞片岩和层状结构的岩石样本的断裂测试数据。测试在实验室规模的 ASI-2 型测试仪上进行。测试样本受到单轴压缩，直到不连续为止，同时同步记录相关的电磁辐射、载荷和沿压缩轴的位移。断裂中的层状岩石样本显示出地球物理参数和电磁发射的各向异性。
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引用次数: 0
Design of High Speed Rotors for Axial Mine Fans 轴流式矿用通风机高速转子的设计
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050113
A. M. Krasyuk, E. Yu. Russky, N. V. Panova, T. I. Irgibaev

Abstract

The article presents the optimization design results for impellers of axial fans for main ventilation in mines using the criteria of minimum mass and required stress level in fan assemblies. The design of a single disk impeller is justified. For high-duty fans having the blade tip speed of 200–220 m/s, the topology optimization is performed for the single-disk impeller. The dependence between the design parameters of the impeller components and the speed of the fan rotor is determined. The topology optimization is implemented with SIMP in ANSYS.

摘要 本文介绍了矿井主要通风设备轴流式风机叶轮的优化设计结果，设计采用的标准是风机组件的最小质量和所需的应力水平。单盘叶轮的设计是合理的。对于叶尖速度为 200-220 米/秒的高负荷风机，对单盘叶轮进行了拓扑优化。确定了叶轮部件设计参数与风机转子速度之间的关系。拓扑优化是通过 ANSYS 中的 SIMP 实现的。
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引用次数: 0
Bio-System Concept of Technological Innovation in Mining with Implementation of Ecological Imperative 采矿技术创新的生物系统概念与生态要求的落实
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050162
Yu. P. Galchenko, G. V. Kalabin

Abstract

The prospects for ecologization of technological paradigm of development in the sector of mineral resources are studied and substantiated with regard to the requirements and constraints, and based on the equal possibilities for the biosphere and technosphere. The notion of the nature-like technologies is structured subject to the coincidence of missions of the content-rich components in the natural and geotechnical systems. The methodology of the homeostatic transformation of the biological system functions into the structure of a cluster on the convergent mining technologies is presented.

摘要 根据要求和制约因素，并基于生物圈和技术圈的平等可能性，研究和论证了矿产资源部门技术发展模式生态化的前景。类自然技术的概念是根据自然和岩土技术系统中内容丰富的组成部分的任务的一致性而构建的。介绍了将生物系统功能转化为聚合采矿技术集群结构的同态转换方法。
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引用次数: 0
Temporary Structure Formation in Granular Media under Periodic Shear: Numerical Modeling and Experiment 周期性剪切作用下颗粒介质中的临时结构形成：数值建模与实验
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050046
V. P. Kosykh, O. A. Mikenina

Abstract

The authors implemented a series of lab-scale cyclic shear deformation tests of granular medium. The steady-state boundary conditions kept for the hundreds of thousands shear cycles result in the time-varying response of the test medium. The periods of stress fluctuations of the order of tens, hundreds and thousands cycles are observed in the medium. The time-varying response of the medium is connected with periodic formation and deformation of clusters and force chains in the medium. The DEM-based numerical modeling of cyclic shear of a granular medium with the same loading program as in the tests shows the adequacy of the discrete element method and the agreement of the numerical and experimental data.

摘要 作者实施了一系列实验室规模的颗粒介质循环剪切变形试验。在数十万次剪切循环中保持的稳态边界条件导致了试验介质的时变响应。在介质中观察到了数十、数百和数千周期的应力波动周期。介质的时变响应与介质中簇和力链的周期性形成和变形有关。用与试验相同的加载程序对颗粒介质的循环剪切进行基于 DEM 的数值建模，显示了离散元方法的适当性以及数值和试验数据的一致性。
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引用次数: 0
Physical and Mechanical Properties of Ore and Rocks after Flooding 洪水过后矿石和岩石的物理和机械特性
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050034
A. A. Eremenko, T. P. Darbinyan, Yu. N. Shaposhnik, O. M. Usol’tseva, P. A. Tsoi

Abstract

The authors investigate the physical and mechanical properties of hornstone, gabbro-dolerite and rich chalcopyrite–pyrrhotine ore subjected to flooding at the Oktyabrsky deposit in the Talnakh ore province. The analysis of the petrography, chemistry and mineralogy of the test samples showed no substantial differences in their properties after flooding. The comparison of the strength and deformation characteristics of rocks from the uniaxial compression and tension testing results demonstrate the decrease of both in water-saturated rocks and the increase in the room-temperature dried samples. The limit strength, elasticity modulus and internal friction angles have smaller values in rocks after drying than in the initial samples.

摘要 作者在塔尔纳克矿区的 Oktyabrsky 矿床研究了角闪岩、辉长岩-辉绿岩和富黄铜矿-黄铁矿的物理和机械特性。对试验样品的岩相学、化学和矿物学分析表明，它们在浸水后的性质没有实质性差异。根据单轴压缩和拉伸试验结果对岩石的强度和变形特征进行比较后发现，水饱和岩石的强度和变形特征都有所下降，而室温干燥样品的强度和变形特征则有所上升。干燥后岩石的极限强度、弹性模量和内摩擦角值均小于初始样本。
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引用次数: 0
Single-Criterion Optimization of Limestone Supply under the Conditions of Variable Thermal Power Complex Structure and the Differences between Solutions 可变火力发电复杂结构条件下石灰石供应的单一标准优化及解决方案之间的差异
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050186
Ž. Praštalo, S. Vujić, M. Kuzmanović, P. Stjepanović, R. Šarac

Abstract

The paper presents the single-criterion modeling of limestone supply under the conditions of the variable structure of the thermal power complex of Serbia. In the end, the paper provides an analysis of the differences between multi-attribute and single-criterion solutions.

摘要 本文介绍了在塞尔维亚火电综合体结构可变的条件下石灰石供应的单一标准模型。最后，本文分析了多属性解决方案和单一标准解决方案之间的差异。
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引用次数: 0
Study on Beneficiation Technology for Rational Utilization of Low-Grade Copper Nickel Symbiotic Ore 合理利用低品位铜镍共生矿的选矿技术研究
IF 0.8 4区 工程技术 Q3 Earth and Planetary Sciences
Journal of Mining Science
Pub Date : 2024-02-26 DOI: 10.1134/s1062739123050150
F. Gan, L. Gao, H. Dai, B. Rao, J. Bai

Abstract

In order to realize the rational utilization of low-grade polymetallic symbiotic mineral resources with low input, typical copper–nickel symbiotic low-grade ores were used as the test object. After careful process mineralogy research on the ore, it was learned that the main valuable elements of the ore were Cu and Ni, and the content of these two elements was 0.16 wt.% and 0.39 wt.%, respectively. The main copper-bearing mineral in the ore was chalcopyrite, and the main nickel-bearing mineral was pentlandite Useful minerals were finely distributed in ores. Based on the properties of ore, a beneficiation process of one stage grinding (to) copper/nickel mixed flotation (to) copper/nickel separation was proposed. A copper concentrate with a Cu grade of 17.08 wt.% and a nickel concentrate with a Ni grade of 4.63 wt.% were obtained by separation. This study provides a lowinvestment technical solution for the rational utilization of polymetallic paragenetic mineral resources.

摘要 为实现低品位多金属共生矿产资源的低投入合理利用，以典型的铜镍共生低品位矿石为试验对象。经过对该矿石进行细致的工艺矿物学研究，得知该矿石的主要有价元素为铜和镍，两种元素的含量分别为 0.16 重量%和 0.39 重量%。矿石中主要的含铜矿物是黄铜矿，主要的含镍矿物是辉铜矿，有用矿物在矿石中呈精细分布。根据矿石的性质，提出了一段磨矿、铜/镍混合浮选、铜/镍分离的选矿工艺。通过分离获得了铜品位为 17.08 wt.%的铜精矿和镍品位为 4.63 wt.%的镍精矿。这项研究为合理利用多金属副成因矿产资源提供了一种低投资的技术解决方案。
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