scholarly journals Differential Game and Simulation Study on Management Synergy of Regional Coal Mine Emergencies in China

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Yu Hao ◽  
Chaolun Sun ◽  
Jianping Wei ◽  
Sasa Gu ◽  
Fan Zhang
Keyword(s):  
Emergency Management ◽  
Differential Game ◽  
Coal Mine ◽  
Selection Process ◽  
Coal Mines ◽  
Optimal Method ◽  
Joint Force ◽  
The Government ◽  
The Cost ◽  
And Control

Emergency management of coal mines requires enhanced synergy among departments, institutions, and enterprises, which means overall efficiency in management. Their synergy can effectively lower the cost of emergency management, improve the effectiveness of it, and build a strong joint force for the prevention and control of emergencies. Accordingly, this study established a synergy system for regional coal mine emergency management and analyzed the interest relationship among key stakeholders in the system. Then, it established differential game models of the management synergy, explored the selection process of the behavior strategy of each stakeholder under different situations, and provided important tools for quantitative analysis on emergency management synergy practice. Furthermore, numerical simulation was carried out to analyze the influencing factors of their decision behaviors. The research results are of great significance for the comprehension of the evolution mechanism for the emergency management synergy of coal mines, the assistance for the government in determining the optimal method in emergency management synergy, the mobilization of the stakeholders, and the improvement of the current situation of emergency management synergy of coal mines in China.

scholarly journals Prevention and Control of Hydrogen Sulphide Accidents in Mining Extremely Thick Coal Seam: A Case Study in Wudong Coal Mine

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Xuchao Huang ◽  
Enmao Wang ◽  
Gang Wang ◽  
Jiuyuan Fan
Keyword(s):  
Molecular Weight ◽  
Coal Seam ◽  
Hydrogen Sulphide ◽  
Coal Mine ◽  
Prevention And Control ◽  
Coal Mines ◽  
Dynamics Simulation ◽  
Porous System ◽  
Coal Stratum ◽  
And Control

Hydrogen sulphide is a toxic gas often present in coal seams and seriously threatens the lives and health of underground workers in coal mines. In this study, we theoretically modelled hydrogen sulphide generation in extremely thick underground coal mines with the +575 level #45 coal seam of Wudong Coal Mine as an example and obtained the on-site hydrogen sulphide emission pattern and spatial distribution features by combining field measurements and computational fluid dynamics simulation. The results showed that hydrogen sulphide mainly exists in the coal porous system in an adsorbed state. Because hydrogen sulphide has a molecular weight greater than the average molecular weight of air molecules, its concentration decreases with the increase of altitude to the bottom plate. When mining the upper stratified coal stratum, it diffuses widely in the working space; while when mining the lower coal stratum, it mainly concentrates at the bottom of the working face. Based on these analyses, on-site treatments were carried out using mixtures with different concentrations of sodium carbonate and sodium bicarbonate. In addition, different combinations of catalysts as well as type A and type B wetting agents were also tested. Eventually, a neutral KXL-I absorbent was developed, and the process of preinjecting absorbent and spraying absorbent was designed. The results showed that the newly developed KXL-I absorbent has high hydrogen sulphide absorption ability and is suitable for use as an absorbent in Wudong Coal Mine; preinjecting and spraying the absorbent can effectively prevent hydrogen sulphide disasters in the +575 level #45 coal seam in Wudong Coal Mine with the optimal final concentration of 0.9% and the absorption rate of 87% at the shearer of 66.6% at the support. Overall, our study provides valuable information for the prevention and control of hydrogen sulphide disasters in coal mines.

scholarly journals Understanding China’s National Emergency Command System from the Perspective of Power and Responsibility Allocation

2020 ◽  
Vol 13 (1) ◽  
pp. 301
Author(s):  
Feng Kong
Keyword(s):  
Emergency Management ◽  
Leadership Style ◽  
Control Mechanism ◽  
Main Aspect ◽  
The Core ◽  
The Common ◽  
The Government ◽  
National Headquarters ◽  
National Emergency ◽  
And Control

The structure between the Party and the government is the core and soul of China’s emergency management, and the allocation of power and responsibility is the core of China’s national emergency command system (NECS). The allocation of power and responsibility between the Party and the government, as well as between departments, is the main aspect of the allocation of power and responsibility in China, and is also an important component of the NECS. This paper mainly introduces the characteristics of power and responsibility allocation between the Party and the government, as well as between departments in China’s NECS, and analyzes the above-mentioned power and responsibility allocation, based on the prevention and control of SARS (severe acute respiratory syndrome) and COVID-19 (coronavirus disease 2019), and analyzes their development, changes, and unchanged characteristics. Through the above analysis, we found that the Party’s leadership style in dealing with emergencies has changed from indirect leadership to direct leadership. The joint defense and control mechanism has replaced the national headquarters of emergency management as the common mode.

scholarly journals Government's Policy on Controlling the Covid-19 Virus Based on the Game Theory Approach: Closing Jobs or Purchasing Vaccines

2021 ◽  
Author(s):  
Ramin Sadeghian
Keyword(s):  
Theory Approach ◽  
Proposed Model ◽  
Number Of Patients ◽  
The Game Theory ◽  
Initial Control ◽  
Player Game ◽  
The Government ◽  
Reducing Costs ◽  
The Cost ◽  
And Control

Background: The tools to control COVID-19 virus and this epidemic have been tested in all countries and at different levels. At the community level, they include observing hygienic principles, such as observing social distance, wearing masks, washing hands, observing cleanliness, observing personal belongings, and etc. Also at the macro level, governments have taken measures to combat the virus, such as closing cities, purchasing vaccines hygiene training. Given the high costs of closing cities and purchasing vaccines for governments, they may be willing to select and use a combination of them to control the virus. Considering these 2 factors as 2 competitors in the effectiveness of COVID-19 control, this study sought to find an equilibrium point to control the virus. Methods: An infinite 2-player game was defined by considering the number of cities closed per person-day and the number of vaccine purchased per person, both of which have continuous and infinite space. On the other hand, a significant basic criterion for governments can be the cost and number of patients with the disease. Hence, the game was defined based on 2 criteria. A case study was also solved for the sake of clarity. Results: The government must close offices for at least 12 days and inject 2 doses of the vaccine to about 28 million people in order to achieve its goal of reducing costs and reducing the incidence of the disease. Conclusion: By solving the proposed model, it was found that for the initial control of the disease, the purchase and injection of vaccines can be more effective, but in order to further reduce and control the disease, it is better to close jobs. Analyses also showed that governments that are less willing to spend money on disease control could close jobs.

scholarly journals DESIGN OF IOT BASED COAL MINE MONITORING SYSTEM

2020 ◽  
Vol 9 (6) ◽  
pp. 87-94
Keyword(s):  
Monitoring System ◽  
Coal Mine ◽  
Temperature Sensor ◽  
Coal Mines ◽  
Wireless System ◽  
Toxic Gases ◽  
Cloud Server ◽  
Flame Detection ◽  
Unfavorable Condition ◽  
And Control

Safety of miners is a major challenge nowadays. So we are using IOT based wireless system for monitoring the coal mines and health of the workers. We use two modules which are directly connected to the CLOUD SERVER. In first module we use several SENSORS to monitor and control the various parameters in the coal mines such as temperature and humidity conditions, light detection, leakage of toxic gases and flame detection. Likewise, in next module we use heartbeat sensor and temperature sensor for monitoring the health of the miners. The data which are collected from these modules are stored in the cloud. The alarm warns during unfavorable condition in the coal mine.

scholarly journals Analysis on the Development Status of Coal Mine Dust Disaster Prevention Technology in China

2021 ◽  
Vol 2021 ◽  
pp. 1-9
Author(s):  
Hui Zhang ◽  
Weihai Han ◽  
Youlin Xu ◽  
Zhenfeng Wang
Keyword(s):  
Coal Mine ◽  
Prevention And Control ◽  
Occupational Diseases ◽  
Coal Mines ◽  
Control Measures ◽  
Dust Removal ◽  
Dust Collector ◽  
Mine Dust ◽  
Mining Face ◽  
And Control

In recent years, with the increasing level of mechanization, automation, and intelligence in mine mining, dust pollution in the working environment of coal mines has become increasingly serious. Coal mine dust prevention is an important work related to the life, health, and production safety of miners, and it is also one of the technical problems of mine safety in production. With the continuous revision and improvement of China′s Occupational Disease Prevention and Control Law, coal mining enterprises have generally strengthened the publicity, prevention, and control of occupational diseases among employees, and the control of coal mine dust has been used as a means for enterprises to improve the production environment and strengthen the occupational health of employees. Key work-based studies have shown that China’s coal mines have formed a theoretical system and technology system of dust prevention and control. In the future, China’s coal mines will start from intelligent dust prevention, achieve high-precision dust sensing-transmission-assessment and early warning, and develop a combined dust collector that integrates the functions of atomization dust removal, miniaturization, dry and wet mixing, and large air suction capacity. The combined dust collector realizes the efficient ventilation control and dust removal of the fine dust in wide-area complex spaces such as fully mechanized mining face and fully mechanized mining face. At the same time, breakthroughs have been achieved in low-permeability coal seams, such as strong hydraulic permeability-enhancing technology, intelligent dust-proof robots, and chemical dust suppression. This article introduces the basic concepts, generation, distribution, and hazards of coal mine dust and analyzes the characteristics, applicable conditions, and use effects of various dust control measures such as ventilation dust removal and wet dust removal. Moreover, this article also proposes specific prevention and control measures for related occupational diseases and discusses the development trend of dust prevention and control technology in the hope of providing guidance and reference for coal mine dust prevention and control.

Discuss about the Sustainable Development Way for China Mining

2013 ◽  
Vol 869-870 ◽  
pp. 479-483 ◽  
Author(s):  
You Sheng Zhao ◽  
Xue Ling Du ◽  
Peng Fei Yang
Keyword(s):  
Sustainable Development ◽  
Coal Mine ◽  
Coal Mines ◽  
Low Carbon ◽  
Economy Model ◽  
The Sustainable Development ◽  
Low Carbon Economy ◽  
Enormous Amount ◽  
The Government ◽  
Carbon Economy

It is introduced the problems that coal mines in China are facing now, including the heavy taxes, the enormous amount of workers, the inefficient supervision and being easily effected by the policy. It is suggested that the government should make some policy which are good for the sustainable development of coal mine, and the government should encourage coal mine to adjust their industry in a scientific way, also it is good to reward the coal mine which are run in a low carbon economy model. During the process to build a sustainable coal mine, attention should be paid that it is a course of events which couldnt be accomplished immediately, time is needed to finish the goal of sustainable development of coal mine in China.

scholarly journals Research on the cooperative mechanism of government and enterprise for basin ecological compensation based on differential game

PLoS ONE ◽  
2021 ◽  
Vol 16 (7) ◽  
pp. e0254411
Author(s):  
Hao Sun ◽  
Guangkuo Gao ◽  
Zonghuo Li
Keyword(s):  
Differential Game ◽  
Ecological Compensation ◽  
Dominant Position ◽  
Advertising Effect ◽  
Social Reputation ◽  
Important Means ◽  
Government Enterprise ◽  
The Government ◽  
The Cost

Ecological compensation is an important means of basin pollution control, the existing researches mainly focus on the government level ignoring the important role of enterprises. Therefore, this paper introduces enterprises into the process of ecological compensation. Firstly, suppose the ecological compensation system composed of government and enterprises, the government is in the dominant position. The ecological compensation input of the government and enterprise will produce social reputation, and the ecological compensation of enterprise will also produce advertising effect. Consumer demand will be affected by social reputation and advertising effect. Then, the compensation strategies of the government and enterprise are analyzed by constructing the differential game model. The research shows that under certain conditions, the cost-sharing mechanism can realize the Pareto improvement of the benefits of government, enterprise and the whole system. Under the cooperative mechanism, the benefit of the government, enterprise and the whole system is optimal. Finally, the validity of the conclusion is verified by case analysis, and the sensitivity analysis of the relevant parameters is carried out. The conclusion can provide reference for government to establish sustainable watershed ecological compensation mechanism.

scholarly journals Probabilistic Membrane Computing-Based SLAM for Patrol UAVs in Coal Mines

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jiachang Xu ◽  
Yourui Huang ◽  
Ruijuan Zhao ◽  
Yu Liu ◽  
Hongjin Li
Keyword(s):  
Coal Mine ◽  
Membrane Computing ◽  
Coal Mines ◽  
Membrane System ◽  
Environmental Perception ◽  
Integrated Navigation ◽  
Depth Cameras ◽  
Navigation Algorithm ◽  
Localization And Mapping ◽  
And Control

Patrol unmanned aerial vehicles (UAVs) in coal mines have high requirements for environmental perception. Because there are no GPS signals in a mine, it is necessary to use simultaneous localization and mapping (SLAM) to realize environmental perception for UAVs. Combined with complex coal mine environments, an integrated navigation algorithm for unmanned helicopter inertial measurement units (IMUs), light detection and ranging (LiDAR) systems, and depth cameras based on probabilistic membrane computing-based SLAM (PMC-SLAM) is proposed. First, based on an analysis of the working principle of each sensor, the mathematical models for the corresponding sensors are given. Second, an algorithm is designed for the membrane, and a probabilistic membrane system is constructed. The probabilistic SLAM map is constructed by sparse filtering. The experimental results show that PMC can further improve the accuracy of map construction. While adapting to the trend of intelligent precision mining in coal mines, this approach provides theoretical support and application practice for coal mine disaster prevention and control.

scholarly journals Differential Game Model for Disaster Relief Cooperation between Host Government and Private Sector

2021 ◽  
Vol 1 (4) ◽  
Author(s):  
MAN YANG
Keyword(s):  
Social Responsibility ◽  
Private Sector ◽  
Differential Game ◽  
Host Country ◽  
Disaster Relief ◽  
Optimal Level ◽  
Game Model ◽  
Marginal Revenue ◽  
The Government ◽  
The Cost

The decision of the private sector to fulfil corporate social responsibility (CSR) has become an issue of common concern for the host country government and the private sector in collaborative disaster relief. From the perspective of social responsibility, this paper describes the different cooperation strategies of non-cooperation, cost subsidy, and collaborative cooperation, and constructs a differential game model of disaster relief cooperation between the government and the private sector. The rate of reputational decay has a significant effect on system benefits. The optimal CSR cost subsidy rate is related to marginal revenue and has nothing to do with other factors. Compared with the non-cooperative case, in the situation of the cost of subsidies, as the host country government and marginal revenue is greater than the private sector of the marginal revenue through government subsidies for the private sector in CSR and the government's optimal level of CSR efforts remained unchanged, the optimal level of CSR efforts to improve the private sector, the government, and the private sector's earnings are improving; Compared with the cost subsidy, the optimal CSR effort level of the government and the private sector increases in the case of collaborative cooperation, and so does the system benefit.

scholarly journals Typical Cases of Groundwater Pollution and Control Strategies for Closed Coal Mine in China

2020 ◽  
Author(s):  
Qiyan Feng ◽  
Lai Zhou ◽  
Yongping Liang ◽  
Jianwei Zhou ◽  
Hujun Ren ◽  
...  
Keyword(s):  
Coal Mine ◽  
Mine Water ◽  
Groundwater Pollution ◽  
Prevention And Control ◽  
Coal Mines ◽  
Pollution Prevention ◽  
Mining Area ◽  
Water Infiltration ◽  
Geological Conditions ◽  
And Control

Abstract Due to the coal resource depletion, complicated geological conditions, and policy adjustment of China coal mine industry, a large number of coal mines have been closed and abandoned. The rebound of groundwater level will cause flooding of goaf and roadways after mine closure. The hydrogeological conditions change significantly as well. The pollutants will leach out, transform and transport which lead to pollution and increase risk to the groundwater system in the mining area. This research investigated closed coal mining area in Xuzhou, Zibo, Fengfeng, Kaili, Yangquan, Doulishan, Huaibei, Jiaozuo, Jingxing, Mile, etc., to present typical cases for analyzing the featured pollutants in mine water. Eight groundwater pollution pathways were summarized in closed coal mines, including pollution infiltration from surface mining fissures; submerged water infiltration pollution; leaching pollution of surface solid waste; cross strata pollution from the diversion fissure zone in the mining roof; cross strata pollution through the mining fissures in the mining floor; cross strata pollution through the water-conducting wells; cross strata pollution of faults or collapse columns; water overflow from goaf. Three typical cases on cross strata pollution in the closed/abandoned coal mine were analyzed emphatically. Aiming at the prevention and control of groundwater pollution risk in coal mine, the technical ideas of reducing quantity and pollutant of mine water, channel blocking, extraction control, purification and utilization are put forward. Based on this idea, the main pollution prevention and control technologies are recommended, and the countermeasures for the environmental protection of groundwater in closed mine are proposed.

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