The Distribution Character of No.12 Coal Mine and Gas in Pingdingshan

Abstract

The extruding of coal and gas is related to the geologic structure, which controls the storage of gas and shows the damage extent of coal seam and width distribution, as well as the distribution of coal and gas extruding. Based on lots of information about gas area and gas parameters, starting from the essential character of Pingdingshan mine area, like the No.10 mine sycline, Guozhuang anticline, Likou sycline, this article analyses the main controlling role of structure on the No.12 coal mine and gas, finding the distribution regularities of the No.12 coal mine and gas, and made some speculation about potential danger in the virgin area. Keywords-the outburst of coal and gas; controlling role; distribution character; fold structure; the storage of gas China has the most serious coal and gas accidents in the world; the death rate of coal mine accidents remains the first place . According to the Statistics of 1:2.5 Million Coal Mine and Gas Structure, our outburst of mine field increased from 274 pairs of 1990 to 1146 pairs of 2011, averagely increasing by 43 pairs every year. Outburst of coal and gas happened almost 280 times every year , which makes it the first disaster of gas disaster. [2] Outburst of coal and gas is a kind of extremely complicated phenomenon of losing stability happens underground. Nowadays, there are still doubts about principle of outburst around the experts in the world, putting forward all kinds of assumption like the stress role theory, the gas role theory and the comprehensive role theory. Among these, the comprehensive role theory is acknowledged by most scholars. It talks that the gravity, gas and coal mine make the outburst. The stress is the leading factor causing the outburst. High pressured gas plays a decisive role in the development. The physical substance of coal is the factor that stops the outburst. [3-9] Pingdingshan mine area is one of the very complicated areas in China. Pingdingshan the No.12 mine is the most serious outburst coal areas. Many experts did research into Pingdingshan mine area; this article uses the gas ground theory and coal dynamics way to analyze and makes area prediction about the potential danger on the virgin area. I. PINGDINGSHAN MINE AREA SUMMARY Controlled by the area structure, Pingdingshan mine area’s main character is top in the middle and deep around. The mine area is formed into a series of “north west west—north west” folds (Lushan anticline, Likou syncline, Xiangjia anticline, Jing Jiawa syncline) ,arranged in parallel, with the “north west west—north west” breaks (Luye break, Xiangjia break, Shangshui breakage, Zhangde breakage) and “North north east—North east break” (Jiaxian break, Luogang break). The structure of NWW-NW is shown as the squeeze of north south direction and large scales of thrust nappe. The structure of NNE, NE is early shown as compression twist. In comparison, the constructure of NNW-NW lasts long and appears heavily and spreads the whole area. The distribution of mine area structure and mine field is shown in Figure 1.