Estimating the long-term pillar safety for room-and-pillar ore mining

Nazarov, L. A.; Nazarova, Larisa; Freidin, A. M.; Алимсеитова, Жулдыз

doi:10.1007/s10913-006-0096-6

Cited by 14 publications

(3 citation statements)

References 5 publications

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“…At the present time, numerical modeling based on rock mass criterion have clear advantages in room and pillar designing however, empirical formulas are still commonly in use [4]. Besides, many researchers estimate the formula of calculating bearing capacity upon geometrical dimensions, outcropped area and compressive strength of the rocks and depth of mining [7,8]. These preferred empirical formulas are generally in two forms:…”

Section: Methods For Designing Pillars Under Compressionmentioning

confidence: 99%

Evaluation and applications of empirical approaches and numerical modeling of an underground limestone quarry with room and pillar design

Kun

2014

J Min Sci

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The deepening of marble quarries with rich CaCO 3 based marble reserves in Turkey brings along multiple problems. The steep and high slopes due to deep open pit geometry, the transportation distance within the pit, problems in transportation, narrowing down the active working area while going deeper and complexity in organization are just a few of the mentioned problems. The room and pillar method -an underground mining method-with ease of production and transportation is set in motion in marble quarries to resolve the problems encountered in deep open pit mining and the difficulties of selective production due to the pit geometry. A limestone quarry in Antalya-Finike vicinity in southern Turkey applying both open pit and room and pillar methods is investigated by numerical modeling and empirical formulas. The realized situation is interpreted and compared to the data gathered by empirical formulas and the results of numerical analysis. The necessity to resize the pillars is revealed as a result of field works, laboratory and modeling studies in the light of the geometry and observed deformations in room ceilings and pillars.

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Section: Methods For Designing Pillars Under Compressionmentioning

confidence: 99%

Evaluation and applications of empirical approaches and numerical modeling of an underground limestone quarry with room and pillar design

Kun

2014

J Min Sci

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“…При отработке пластовых месторождений камерно-столбовой системой необходима информация о свойствах оставленных целиков для прогноза их устойчивости. Получить ее путем лабораторных испытаний образцов сложно из-за наличия природной или техногенной нарушености пластов [11,12], что приводит к поиску искомых параметров в натурных условиях [13]. Меняющаяся при отработке месторождения конфигурация подземного пространства обусловливает изменение полей смещений и деформаций не только вблизи участков ведения горных работ, но и во всем породном массиве, включая дневную поверхность [14].…”

Section: том 6 № 2 2019unclassified

Determination of the Deformation Characteristics of Room-and-Pillar System's Carrying Elements and Horizontal Components of the Natural Stress Field According to the Underground Geodesia Based on the Solution of Inverse Problems

2019

FPVGN

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Рассмотрен метод, позволяющий оценить деформационные характеристики несущих элементов камерно-столбовой системы подземной разработки, а также определять горизонтальные компоненты природного поля напряжений. Метод основан на решении обратных задач смешанного типа в рамках двумерной упругой модели среды. Численными расчетами, выполненными для типичной конфигурации выработанного пространства, с использованием синтетических входных данных (относительных смещений точек контура выработанного пространства, зарегистрированных методами подземной геодезии) установлен объем данных, необходимый для обеспечения однозначной разрешимости обратной задачи.

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“…Kushwaha and Banerjee conducted different working face advance numerical modeling studies using FLAC to assess the caving behavior of the overlying upper strata, and estimated the optimal obliquity of the face for faster and safe exploitation of the developed pillars by short‐wall mining to improve the productivity. Nazarov et al proposed a method to determine the rheological parameters of rocks based on the inverse problem solution with the use of data for the convergence in the room‐and‐pillar ore mining. Ghasemi et al presented a multi‐input/multi‐output Mamdani fuzzy model by which to predict the pillar sizing in room and pillar coal mines.…”

Section: Introductionmentioning

confidence: 99%

A study of the dynamic movement rule of overlying strata combinations using a short‐wall continuous mining and full‐caving method

Wen

Cheng

Chen

et al. 2019

Energy Science & Engineering

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At present in China, short-wall working face coal-mining methods are among the main methods used for the high-efficiency recoveries of boundary coal pillars and residual pillars. In traditional short-wall mining methods, overlying roofs are supported by coal pillars. However, issues such as the excessive number of coal pillars, low coal recovery efficiency, large areas of hanging roof arches, etc, have been encountered. In view of the aforementioned issues of the current short-wall mining technology, this study took the short-wall mining of the Yujialiang Mine in the Shendong mining area as the project background. The study then proposed a judgment method for the key stratum on the working face of the mine using a short-wall continuous mining and full-caving method. The proposed method was based on the theory of elastic plates and was verified using the theoretical analysis results of similar material simulation experiments. FLAC 3D software was adopted to analyze the stress and displacement evolution processes of the overlying rock strata during the advancement of the working face using a short-wall continuous mining and full-caving method. The results showed that the short-wall continuous mining and full-caving method not only had the ability to improve the recovery rate, but was also able to realize the effective control of the roof areas, thereby avoiding any large areas of hanging arches. The short-wall continuous mining and full-caving method is potentially of important significance for the improvement of coal recovery rates, as well as for the safe and highly efficient mining of boundary coal pillars and residual pillars in mines under special conditions. K E Y W O R D Scaving span, composite key stratum, numerical simulation, short-wall continuous mining and full caving, similar material simulation experiment | 2985 WEN Et al.

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Estimating the long-term pillar safety for room-and-pillar ore mining

Cited by 14 publications

References 5 publications

Evaluation and applications of empirical approaches and numerical modeling of an underground limestone quarry with room and pillar design

Evaluation and applications of empirical approaches and numerical modeling of an underground limestone quarry with room and pillar design

Determination of the Deformation Characteristics of Room-and-Pillar System's Carrying Elements and Horizontal Components of the Natural Stress Field According to the Underground Geodesia Based on the Solution of Inverse Problems

A study of the dynamic movement rule of overlying strata combinations using a short‐wall continuous mining and full‐caving method

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