2009年11月以来,我国出现长时间大范围雨雪天气,造成华北、两湖、西北和华东地区天然气使用量增长迅速,普遍超出供应计划,天然气供需矛盾突出。2009年冬天来得早,天然气需求量增加得快,又因为在相同热值情况下,天然气比汽油便宜,使得社会各界更愿意使用天然气。虽然西气东输一线工程年供气量达到170亿 Since November 2009, China has witnessed a long period of heavy rain and snowy weather, resulting in the rapid growth of natural gas use in North China, Hubei, Hubei, Northwest and East China, which is generally beyond the supply plan. The contradiction between supply and demand of natural gas is prominent. As early as the winter of 2009, demand for natural gas increased rapidly and because natural gas was cheaper than gasoline at the same calorific value, making all sectors of society more willing to use natural gas. Although the West-East Gas Pipeline project annual gas supply reached 17 billion