scholarly journals Implementation of Paste Backfill Mining Technology in Chinese Coal Mines

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Qingliang Chang ◽  
Jianhang Chen ◽  
Huaqiang Zhou ◽  
Jianbiao Bai
Keyword(s):  
Coal Mining ◽  
Underground Mining ◽  
Coal Mines ◽  
Practical Implementation ◽  
Widespread Application ◽  
Mining Technology ◽  
Backfill Mining ◽  
Paste Backfill ◽  
Chinese Coal ◽  
Specific Implementation

Implementation of clean mining technology at coal mines is crucial to protect the environment and maintain balance among energy resources, consumption, and ecology. After reviewing present coal clean mining technology, we introduce the technology principles and technological process of paste backfill mining in coal mines and discuss the components and features of backfill materials, the constitution of the backfill system, and the backfill process. Specific implementation of this technology and its application are analyzed for paste backfill mining in Daizhuang Coal Mine; a practical implementation shows that paste backfill mining can improve the safety and excavation rate of coal mining, which can effectively resolve surface subsidence problems caused by underground mining activities, by utilizing solid waste such as coal gangues as a resource. Therefore, paste backfill mining is an effective clean coal mining technology, which has widespread application.

Current Situation and Prospect of Coal Backfill Mining Technology

2012 ◽  
Vol 524-527 ◽  
pp. 421-425 ◽  
Author(s):  
Wen Yu Lv ◽  
Zhi Hui Zhang
Keyword(s):  
Mining Method ◽  
Abscission Layer ◽  
Mining Technology ◽  
Backfill Mining ◽  
Paste Backfill ◽  
Rock Movement ◽  
Mining Capacity ◽  
Mining Design

This paper introduces the classification of the coal backfill mining method and analyzes current technology statuses of several coal backfill mining technologies: waste backfill mining technology, paste backfill mining technology and abscission layer grouting backfill mining technology. Based on the analysis of current backfill mining technology statuses, this paper puts forth that the backfill mining technology should focus on the problem of the lack of coal backfill mining capacity, research on the role of backfill mining rock movement needing to be strengthened, filling efficiency and economy needed to improved through reasonable optimization of backfill mining parameter, so it can provide the theoretical basis for backfill mining design.

scholarly journals Improvement of production control of coal mining enterprises with underground mining method

2021 ◽  
Vol 303 ◽  
pp. 01017
Author(s):  
Tatyana Tyuleneva
Keyword(s):  
Coal Mining ◽  
Production Control ◽  
Underground Mining ◽  
Coal Mines ◽  
Underground Coal Mining ◽  
Safety Requirements ◽  
Production Control System ◽  
Production Safety ◽  
Foreign Countries ◽  
Underground Coal Mines

Production safety is one of the problems of competitiveness of underground mining enterprises, one manifestation of which is the reduction and minimization of the number of accidents and incidents of personal injury or even death. To solve this problem, it is necessary to improve the system of production control of coal mines in order to eliminate these factors. Relative indicators of accidents and injuries at underground coal mines of Russia in comparison with the average indicators are considered, and also importance of the human factor in the occurrence of dangerous production situations and the evaluation of their causes and effects are revealed. In addition, the article considers the most common violations of safety requirements for underground coal mining, analyzes the experience of foreign countries in improving the production control system, assesses the possibility of its application for improving production control at Russian coal mines, and determines main areas for implementing a risk-based approach at coal mining enterprises.

Whole-Body Vibration Exposures in Undeground Coal Mining Operations

2016 ◽  
Vol 60 (1) ◽  
pp. 914-918
Author(s):  
D. Lynas ◽  
R. Burgess-Limerick
Keyword(s):  
Coal Mining ◽  
Underground Mining ◽  
Coal Mines ◽  
Whole Body Vibration ◽  
Electrical Equipment ◽  
Whole Body ◽  
Mining Equipment ◽  
Mining Operations ◽  
Body Vibration ◽  
Underground Coal Mines

Studies conducted on surface coal mining equipment have identified whole-body vibration as a significant hazard. Operators of underground mobile equipment, particularly shuttle cars and transport vehicles, are likely to be exposed to significant levels of whole-body vibration. To date, measuring whole-body vibration from underground mining mobile equipment has been difficult due to the strict guidelines governing the use of electrical equipment in underground mines. This paper presents data obtained from two low-methane coal mines using an iOS application installed on iPod Touch devices. The majority of measurements taken from a range of mobile plant and equipment in use at the underground coal mines exceeded the ISO2631.1 Health Guidance Caution Zone. Further investigations are being undertaken to develop a thorough understanding of whole-body vibration exposures to which operators of mobile equipment used in underground coal mines are exposed and the opportunities for application of this information to assist mine site safety, health and risk management processes.

scholarly journals Research on Non-Pillar Coal Mining for Thick and Hard Conglomerate Roof

Energies ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 299
Author(s):  
Xiaoyu Liu ◽  
Manchao He ◽  
Jiong Wang ◽  
Zimin Ma
Keyword(s):  
Coal Mining ◽  
Rock Mechanics ◽  
Field Experiments ◽  
Coal Mines ◽  
Mining Technology ◽  
Technology System ◽  
Hard Roof ◽  
Pillar Mining

This article introduces a new non-pillar coal mining technology (i.e., Gob-side Entry Retaining by Roof Cutting (GERRC)) under the condition of thick and hard roofs. First, we theoretically analyzed the solution to the large suspension span of the thick and hard roof in coal mining. Three-Zone pre-split blasting design in non-pillar coal mining for thick and hard roofs was proposed, based on the principles of rock mechanics. After field experiments, the technology was successfully applied to the non-pillar coal mining of a huge thick conglomerate roof. This research supplements the non-pillar mining technology system. The proposed technologies and methods have strong applicability and have certain guiding significance for the safe and efficient mining of related coal mines.

scholarly journals Combined Mining Technologies for Coal Deposits (Review)

2020 ◽  
Vol 4 (4) ◽  
pp. 230-250
Author(s):  
A. Yu. Ermakov ◽  
V. V. Senkus ◽  
Duc Thang Pham ◽  
Val. V. Sencus ◽  
N. I. Abramkin ◽  
...  
Keyword(s):  
Coal Mining ◽  
Net Present Value ◽  
Land Reclamation ◽  
Underground Mining ◽  
Opencast Mining ◽  
Coal Deposit ◽  
Mining Technology ◽  
Coal Deposits ◽  
Underwater Mining ◽  
Complex Solutions

The paper discusses the main disadvantages of strip and underground mining methods and possibilities of eliminating the disadvantages through introducing a combined technology of coal deposit mining. Combined coal mining technology is the method comprising elements of several geotechnologies, for example, underground and strip mining, as well as, possibly, underwater mining, borehole and other techniques of deposit mining. The combined coal mining technology provides for unified layout for opening, development, production and processing of reserves for the whole LoM on the basis of general technological solutions made in advance. Such complex solutions for opening and development of deposit reserves within the opencast and underground mining contour allows minimizing the volume of openings and reducing the time for commissioning, investment costs, as well as decreasing the costs for aerage, drainage, rock mass hauling and land reclamation. Substantiation of deposit opening options should comprehensively take into account technical, organizational, and economic factors [34–37]. Analysis of the options as exemplified by the Makar’evskoe coal deposit development in Kuzbass allows to conclude that the combined method is promising and promotes increasing optimal volumes of coal production, while reducing the deposit development time by about 15 %, and increase the net present value compared to underground and opencast mining options more than 5 times.

scholarly journals Development Status of Coal Mining in China

2021 ◽  
Author(s):  
liu xinjie ◽  
Li Lianghui ◽  
Yang yingming
Keyword(s):  
Coal Mining ◽  
Underground Mining ◽  
Coal Mines ◽  
Production Capacity ◽  
Coal Industry ◽  
Open Pit ◽  
Open Pit Mining ◽  
Development Status ◽  
Average Production ◽  
Speed Up

Abstract As a controllable active resource in China, coal mining is facing the transition from output to quality. Base d on the total mining production and average capacity, the current situation and level of coal mining at three scales of mine, city and province is analyzed , data support for the layout of sustainable mining development and the optimization of output is provided. The results show that China's coal is mainly mined by underground mining, accounting for 87%, with an average production capacity of 0.93 million tons. Open pit mining accounts for 13%, with an average production capacity of 5.73 million ton s. S o t he average production capacity of open pit and underground workers is 1.045 million tons, with 1,181 coal mines capacity lower than 0.3 million tons, accounting for 35% of the total coal mines, contributing only 4% to their output. They are distributed in about 48 cities in 6 provinces, seriously restricting the green coal mining. The coal industry should speed up the reduction of small coal mines in key provinces and cities, eliminate outdated product ion capacity in the central region, increase the speed and proportion of coal resources moving westward, and promote high quality development of coal mining.

Working conditions and occupational pathology of coal miners in the Arctic

2019 ◽  
pp. 452-457 ◽  
Author(s):  
S. A. Gorbanev ◽  
S. A. Syurin ◽  
N. M. Frolova
Keyword(s):  
Coal Mining ◽  
Working Conditions ◽  
Occupational Diseases ◽  
Climatic Factors ◽  
Coal Mines ◽  
The Arctic ◽  
Morbidity Rate ◽  
Coal Miners ◽  
Increased Risk ◽  
The Impact

Introduction. Due to the impact of adverse working conditions and climate, workers in coal-mining enterprises in the Arctic are at increased risk of occupational diseases (OD).The aim of the study was to study the working conditions, causes, structure and prevalence of occupational diseases in miners of coal mines in the Arctic.Materials and methods. Th e data of social and hygienic monitoring “Working conditions and occupational morbidity” of the population of Vorkuta and Chukotka Autonomous District in 2007–2017 are studied.Results. It was established that in 2007–2017 years, 2,296 ODs were diagnosed for the first time in 1851 coal mines, mainly in the drifters, clearing face miners, repairmen and machinists of mining excavating machines. Most often, the ODs occurred when exposed to the severity of labor, fibrogenic aerosols and hand-arm vibration. The development of professional pathology in 98% of cases was due to design flaws of machines and mechanisms, as well as imperfections of workplaces and technological processes. Diseases of the musculoskeletal system (36.2%), respiratory organs (28.9%) and nervous system (22.5%) prevailed in the structure of professional pathology of miners of coal mines. Among the three most common nosological forms of OD were radiculopathy (32.1%), chronic bronchitis (27.7%) and mono-polyneuropathy (15.4%). In 2017, coal miners in the Arctic had a professional morbidity rate of 2.82 times higher than the national rates for coal mining.Conclusions. To preserve the health of miners of coal mining enterprises, technical measures to improve working conditions and medical interventions aimed at increasing the body’s resistance to the effects of harmful production and climatic factors are necessary.

Study of Real-Time Monitoring System on the Underground Mining Activities Based on Explosion Source Location Technology

2012 ◽  
Vol 190-191 ◽  
pp. 1179-1182
Author(s):  
Xiu Zhi Meng ◽  
Zeng Zhi Zhang ◽  
Zong Sheng Wang
Keyword(s):  
Real Time ◽  
Monitoring System ◽  
Underground Mining ◽  
Coal Mines ◽  
Source Location ◽  
Environmental Damage ◽  
Mining Activities ◽  
Real Time Monitoring ◽  
P Waves ◽  
Vibration Sensors

The mining boundary ultra-layer & cross-border of some small coal mines in the profit-driven results in a many of safety accidents, waste of resources and environmental damage while the state can not achieve the full uninterrupted supervision because of the backward monitoring tools and equipment. In this situation the real-time monitoring system for underground mining activities is designed based on explosion source location technology. Small and medium-sized coal mines tunnel by blasting operations. The P waves are picked up by acceleration vibration sensors buried underground that are identified and dealt by using wavelet transform. The bursting point is located by the Geiger algorithm and displayed in the mine’s electronic map. The monitor system has good stability, small positioning error by field-proven.

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