| China has been considered as the first superpower coal production in the whole world. In the mean time, coal resource consumption is roughly accounting for 66% of the primary energy consumption in China, which forms the concrete energy consumption structure and cannot be changed in a short period. Under such condition, rational coal mining and clean utilization of coal resources play a vital role in sustainable energy strategy of China. However, it is difficult and really a challenge to attain a healthy and proper scientific coal mining. There are many factors that can affect the development of scientific coal mining, such as the complex geological factor, safety factor, management factor, economic factor, and cultural factor. Nowadays, especially in recently years, coal industry of China have to address a sever situation. Because of the decreasing of China economic growth and industry restructuring, large competition of coal industry has been formed. There are mainly three reasons that caused the status of coal industry in China: 1) decreasing of the national economy growth, 2) roughly 1.0 billion tons overcapacity of coal production in coal industry, and 3) adjustment of industrial structure. Hence, traditional extensive coal mining of coal industry, as the main supply of resources support of China, cannot meet the requirements of modern and scientific coal mining. In other words, the coal mining industry has to face this important transition period and it is imperative to accelerate altering its mining mode. Therefore, concept of scientific coal mining should be spread in coal industry. In order to realize scientific coal mining and to achieve sustainable development of coal industry, it is necessary to develop a healthy mining model of economical conservation, ecological, green mining, and low-carbon in China’s coal industry.To obtain the purpose of high efficient mining in our new mining mode, safety mining, green mining, and sustainable development of coal mining are considered as the preconditions in our concept of scientific coal mining. At the same time, the scientific coal mining also redefines the role of coal industry, which will have a profound influence on the development of coal industry in China. Therefore, in order to offer a reference of quantitative standard to the mining industry, new evaluation indicators and evaluation standard are needed to be constructed.Scientific coal mining is a relatively broad, complex, and multidisciplinary system engineering, which including the subjects of philosophy, engineering, economics, econometrics, ecology, and management, etc. To give a definition of scientific coal mining, in this thesis, related issues of safety, ecological, and social caused by coal mining are identified and the concept of scientific coal mining and its connotation are analyzed comprehensively. In the mean time, definitions of green mining and responsible mining are compared in a manner of very details. The concept of scientific mining is then redefined as a new mining system, which include the following components: premise-mining safety, supportive-green mining technology, approach-mechanized automation and scientific management, measuring-enterprise benefits, target-increasing of resources recovery and decreasing of environment impact. To combine the scientific coal mining to the main coal mining systems, a new STEEM(Safety-Technology-Economy-Environment-Management) system is proposed and developed in this thesis, which is based on the definition and connotation of scientific coal mining. This is the first time that the scientific management system is merged into the coal mining system.Each subsystem are detailed analyzed and the interrelationship between each subsystem are also illustrated after establish the STEEM system of scientific coal mining. Totally, 40 indicators of each subsystem are analyzed and filtered by taking means of bulk points figure and correlation analysis for each subsystem. Only 13 indicators, that cannot be replaced and with unique features, are simplified and retained in our system after removing the high related indicators. These 13 indexes are illustrated by quantitative to describe the relationship between every two indexes, which provides a simplified reference and guild of index selection for the scientific coal mining system and makes the new STEEM system more simple and practical.The relationships between every two indexes are firstly analyzed in a sense of micro-perspective. The development value and coefficient of coordination degree between each subsystem are established based on relatively macroscopic coordination theory. Quantitative analysis of the whole system is conducted based on a mathematic model, which can reflect the coordination degree of the whole system. In this manner, the STEEM system of scientific mining can change a disorder process into a well ordered process and the whole system can reach a collaborative state. In this way, the STEEM system is include four distinct features: multiple levels, dynamic, complexity, and target. In the STEEM system, the developmental level value of coal enterprise is firstly obtained by dimensionless computation of the original data, and the coordination degree value of each enterprise is got by regression analysis. In this fashion, the STEEM system of scientific coal mining are evaluated and analyzed in both the micro-perspective and macro-perspective, which make the STEEM system in a stable and science manner and form a complete scientific evaluation system.Totally coal production of coal industry and coal production of each coal enterprise were approximately obtained according to the current scientific capacity and the numbers of coal mines, with certain level of scientific capacity, are calculated based on coal industry market concentration in China. It is shown that total coal production of the top 10 coal enterprise roughly reached or closed to the scientific capacity. Based on our new STEEM system, related index data from top 10 coal enterprise are extracted as the sample. The value of development level are firstly calculated based on membership degree weights of each subsystem, and five standard evaluation curves are then derived for single system at different times. Based on these curves, the weakness links are identified in the STEEM system of scientific coal mining in China. Afterwards, comprehensive development values of 2006-2013 are derived according to the different development level by using regression analysis, static and dynamic evaluation method. It is concluded that an increasing trend of harmonious development of scientific coal mining was found in China.In the last part of this thesis, a case study is performed to test our new STEEM system. China Pingshuo coal group was selected as the engineering background and the scientific coal mining in Pingshuo group are evaluated based on our new STEEM system. After comparing the value between the standard value and that from our new STEEM system, it is shown that the Pingshuo coal mine group belongs to the scientific coal mining criteria and even better than the standard value. Hence, the feasibility, practicality, simplicity, and scientific of our new STEEM system is validated and the new STEEM system can provide a quantitative criteria and the basis for the scientific coal mining.Finally, main contributions and innovations of this study can be summarized into three parts: 1) Enriching the definition and connotation of scientific coal mining, which is divided into the broad and narrow senses. A new STEEM(Safety-Technology-Economy-Environment-Management) system is developed for the scientific coal mining. The “scientific management” subsystem is firstly merged into the main system of coal mining, rather than a complementary system during our research. 2) Based on the current coal science capacity of China, the top 10 large coal enterprises are selected as our research body. The related indexes are selected and analyzed in a detail manner using the statistics and other related theory and all the indexes are analyzed quantitatively between each index. The new STEEM system has a lower onerous complex and has a higher reliability and more practical. 3) A scientific quantitative criteria is provided for scientific coal mining in China by using coordination theory. Based on the proposed quantitative criteria, the development level of coal mine can determined in a objective angle and thus reflect the current mining conditions. In other words, a simple but sound and robust evaluation basis can be provided for coal enterprise to inspect the level of its scientific coal mining. |
PDF Full Text Request