1、翻译部分英文原文Research on Safety Coal Quantity and its application to Coal and Gas Outburst MineWang Haifeng1, Cheng Yuanping1, Yu Qixiang1, Zhou Zongyong2, Zhou Hongxing1, Liu Hongyong1（1. School of Energy and Safety Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, 221008, China;
2、2. Qinan mine, Huaibei Coal Co.Ltd, Suzhou, Anhui, 234115, China）Abstract：In view of excavate tension in coal and gas outburst mine and the demand for supervision of coal mine safety, the paper puts forward the concept of safety coal quantity. Safety coal quantity is a part of preparatory coal quant
3、ity and means non-outburst danger coal quantity in preparatory coal quantity . Safety coal quantity consists of four parts, preparatory coal quantity in non-outburst danger coal seam, preparatory coal quantity in non-outburst danger region, preparatory coal quantity of non-outburst danger by verific
4、ation prognosis in outburst threaten region and preparatory coal quantity of non-outburst danger with regional gas control in outburst danger region. For mining safety, mining coal quantity must be safety coal quantity and is a part of its. After analysis of “three coal reserves” and safety coal qua
5、ntity of Qinan mine in Huaibei Coal Mine Area，it is concluded that safety coal quantity covers about four-fifths of preparatory coal quantity and 2.3 times of mining coal quantity. The mineable periods of preparatory coal quantity, safety coal quantity and mining coal quantity is 16.6 months, 13.3 m
6、onths and 5.9 months, respectively. According to practical situation of Qinan mine, safety coal quantity of Qinan mine meets the requirement of normal relay and mining safety. Keyword: coal and gas outburst coal mine; safety coal quantity; “three coal reserves”; regional gas control; the engineering
7、 methodOur coal mine after decades of underground mining, mining level gradually extended to deep. In 2004, the average large and medium-sized coal mine mining depth of 456 m, 800 m of mining depth more than 15 place, more than 1000 m of coal mine has eight place, the national coal mining every year
8、 about 10 to 20 m (fastest nearly 50 m) speed to the deep extending depth 1. Along with the increase of mining depth mine, coal seam gas pressure and gas content increases year by year, some from low gas mine mine mine for a gradual shift gas or coal and gas outburst mines, China has become the worl
9、d and coal and gas outburst of the countries most affected by the disaster. According to a 2005 45 families to key state-owned coal mining enterprises to carry out surveillance of the safety consultation, 45 door key monitoring state-owned coal mining enterprises in the 415 mines gas and coal and ga
10、s outburst mines, 56.4% to 234, including coal and gas outburst mines, 34.2% of 142 2.In order to avoid coal mining to replace nervous, maintain the normal take mine, in 1961, the coal industry released on mine and open coal mine exploit quantity, amount to coal mining and back to the provisions of
11、the amount to differentiate limits (hereinafter referred to as the regulations) 3. As from the mine outburst mines coal and gas outburst mines to upgrade, the country in the formulation of the mine to ensure smooth take three quantity regulation has gradually can not adapt to the coal and gas outbur
12、st mines to replace the need. Many coal and gas outburst mines, in actual three quantity and three quantity recoverable period far outweigh the rating occur excavates taking over nervous phenomenon, the main reason is the three quantity of coal and coal to amount to a portion of the coal quantity sh
13、ould have outstanding danger, need to pass regional gas control will eliminate outstanding dangerous mining operations. Gas treatment need time and space, if not mine reserve enough gas treatment time and space will lead to replace nervous. Many of the coal mine enterprises also began to ItalySecuri
14、ty is refers to the coal and coal and gas outburst coal mine is to has no prominent risk within the scope of the part of the coal quantity, belongs to the quantity of coal to part. Recovery must ensure safety mining face, back to the coal mining quantity belong to safety quantity of coal part. To do
15、 mine smoke, digging, adopt balance, ensure the smooth and safe to replace mine mining, the extraction in the design and engineering arrangement, want to do well with the coal production organization coordination, make the safety of coal mine and three quantity in coordination. Ready to coal to be b
16、uilt on the formation and perfection of the gas extraction system or have protective layer on the basis of mining condition, ensure the safety of coal mining normal take over. Safety of coal to build in coal seam gas after a full extraction, and on the basis of reached the coal gas extraction basic indicators requirements, meet the safety mining conditions based on 4.1 safety put forward quantity of coal In view of Chinas coal and gas outbu
