Effects of torpedo blasting on rockburst prevention during deep coal seam mining in the Upper Silesian Coal Basin

Wojtecki, Łukasz; Koníček, Petr; Schreiber, J.

doi:10.1016/j.jrmge.2017.03.014

Cited by 16 publications

(10 citation statements)

References 3 publications

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“…According to formulas (3) and (4), the relationship between the drilling cuttings and the elastic strain energy is obtained as follows…”

Section: The Relationship Between the Drilling Cuttings And Energymentioning

confidence: 99%

“…With the mining technology development, the mining depth continues to deepen, and the uncertainty and complexity of geological conditions are becoming more serious, resulting in the frequent occurrence of mine disasters [1][2][3][4]. Among them, rock burst is a violent rock failure process and often causes casualties and property damage [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Combined Early Warning Method for Rock Burst and Its Engineering Application

Qin

Chen

et al. 2019

Advances in Civil Engineering

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Rock burst is a common mine disaster often accompanied with casualties and property damage. In order to effectively predict and prevent the rock burst occurrence, an effective and accurate method for predicting rock burst is necessary. This paper first establishes the relationship between the drilling cuttings and the releasable elastic deformation energy. However, the traditional drilling cutting method has the defect that the drilling depth cannot reach the stress concentration area and the drilling cuttings cannot accurately reflect the internal stress variation in the deep part of coal body. So, an improved drill cutting method is presented to make up for these defects. Finally, the combined monitoring method based on the improved drilling cutting method and the microseismic monitoring method is established. It not only overcomes the limitations of a single prediction method but also effectively utilizes the advantages of improved drilling cutting method and the microseismic monitoring method. And this combined monitoring method is applied to the No. 3302 coalface of Xingcun Coal Mine. The obtained results indicate that the combined monitoring method can improve the prediction capabilities of the rock burst and provide novel insights for preventing the rock burst occurrence.

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“…According to formulas (3) and (4), the relationship between the drilling cuttings and the elastic strain energy is obtained as follows…”

Section: The Relationship Between the Drilling Cuttings And Energymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Combined Early Warning Method for Rock Burst and Its Engineering Application

Qin

Chen

et al. 2019

Advances in Civil Engineering

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“…Between 0-20 points were given to coal dust explosion hazard (8) and rock burst hazard (9). Fire hazard (10) and water hazard (11) were present not so frequently; they generated a lower risk for the functioning of the plant, thus were awarded with less points-between 0-10 points [79,80]. The detailed principles for awarding the points to the given criteria referring to natural hazard are presented in Table 2.…”

Section: Natural Hazards Areamentioning

confidence: 99%

Method for Assessing the Development of Underground Hard Coal Mines on a Regional Basis: The Concept of Measurement and Research Results

Jonek-Kowalska

2018

Energies

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The functioning and development of the extractive industry depends on many unusual conditions that are not found in other industries, such as the size of deposits, the level of natural and technical hazards, geographic location, or the method of mineral extraction (open pit or underground). Therefore, it is difficult to use universal development assessment methods for such specific production units. As a result, the research undertaken in this article aims to develop an indicator method for evaluating the development potential of underground hard coal mines. This method is based on a theoretical and practical analysis of the conditions of functioning of hard coal mines, expert research, and multiple case studies verifying the operation of the presented development indicator. The first part of the article is devoted to identifying and analyzing the criteria for assessing the functioning of underground hard coal mines. Next, the essence and methodology of creating and interpreting the proposed indicator was presented. The second part of the article is empirical, and contains the results of the assessment carried out using the developed indicators for five Polish hard coal mines for the years 2011-2015. The results of the research indicate that the most important factors in the development of hard coal mines relate to the geological and mining conditions, and those concerning natural hazard levels. However, during the functioning, the financial conditions and related production conditions, which ultimately determine the survival and development of underground mining plants, gain in significance.

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“…Among the main coal mining countries in the world, such as the United States, Australia, Germany, the United Kingdom, Poland, and Russia, other mining industries are relatively developed, while Germany and Russia enter deep mining earlier. There are 30 mines in Russia's Donbass mining area with mining depth of 1200-1350 m [1][2][3][4][5][6]. The average mining depth of a Polish coal mine is 690 m, and the deepest coal mine has reached 1300 m. The coal mining depth in Japan and Britain has reached 1125 m and 1100 m, respectively.…”

Section: Introductionmentioning

confidence: 99%

Research on the Evolution Characteristics of Floor Stress and Reasonable Layout of Roadways in Deep Coal Mining

Zhang

et al. 2021

Geofluids

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The safe and efficient mining of deep coal resources is severely restricted by the dynamic disasters caused by high gas and high ground stress. Taking a deep mine in China as the research background, a mechanical model of the front supporting stress with the working face was constructed through theoretical calculations. Based on the limit equilibrium theory, the stress distribution in the plastic zone and the elastic zone of the lateral working face was derived; based on semi-infinite plane mechanics model, the floor vertical and horizontal stress distribution was deduced. Then, the roadway surrounding rock stress and displacement field distribution evolution characteristics were revealed through numerical simulation. On this basis, the reasonable floor gas drainage roadway (FGDR) layout was determined: internal staggered layout was used with FGDR, the vertical distance to the working face is 20 m, and the horizontal distance to the working face end is 15 m; the open-off cut of FGDR was arranged in an external staggered layout, the vertical distance to the working face is 20 m, and the horizontal distance to the open-off cut of the working face is 15 m. It is an important practical significance for the layout of FGDR, the control of surrounding rocks, and the improvement of gas drainage effects under similar conditions through the research results.

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Effects of torpedo blasting on rockburst prevention during deep coal seam mining in the Upper Silesian Coal Basin

Cited by 16 publications

References 3 publications

Combined Early Warning Method for Rock Burst and Its Engineering Application

Combined Early Warning Method for Rock Burst and Its Engineering Application

Method for Assessing the Development of Underground Hard Coal Mines on a Regional Basis: The Concept of Measurement and Research Results

Research on the Evolution Characteristics of Floor Stress and Reasonable Layout of Roadways in Deep Coal Mining

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