1、翻译部分英文原文The Research on Coal Mining Environmental Impact Post AssessmentMai Fangdai , WangSuiquan, Qin Hongaheng, ZhangWei(Sino-Coal International Engineering Design and Research Institute (Beijing Huayu Engineering Co;Ltd)Beijing 100120, ChinaABSTRACT：The environmental impact post assessment is a f
2、urther extension and improvement on the basis of environmental impact assessment. There is an important role to improve the effectiveness of environmental impact assessment and guidance to carry out environmental protection. In our country, coalmining environmental impact assessment study, still in
3、the exploratory stage. This paper systematically discusses the impact of coal mining on the environment, focusing on coal mining environmental impact assessment contents.Key word-coal mining; environmental impact post assessment environmental pollution; ecological damageI. THE INFLUENCE OF COAL MINI
4、NG ON ENVIRONMENTA. The influence of coal mining on water resources The influence of coal mining on water resources mainly shown in two aspects, one is to surface and underground water system, and the other is the destruction of the surface and groundwater pollution. Coal mining inevitably involve t
5、o groundwater drainage and excretion. Due to the continuous groundwater drainage and excretion, will inevitably lead to large underground water level drops drastically, mine supply mainly parched, vegetation and sere, natural landscape damage, agricultural production decline, even the surface soil d
6、esertification. Coal mine of wastewater discharge will pollute surface water and underground water in different degree. Coal gangue and Open-air pile of coal in rainy day flow into the surface water system or infiltration underground phreatic aquifer. Without handling large amounts of emissions in c
7、oal waste cause surface and underground water pollution. These make mining area surrounding rivers, swamps or cistern into black stagnant water. In our country, per freshwater resources capita is only the world average per 1/4. Especially the coal resources rich reserves of north, northwest area, wa
8、ter resources is particularly lacking In the coal-producing provinces Shanxi, 28 million of 18 counties drink water difficult, and 30 million paddy fields become dry land Pollution of surface water is often clear, relatively easy to control1. Contamination of groundwater has a hidden and difficult r
9、ecovery, of more far-reaching. Because groundwater flow is relatively slower, only by aquifer itself natural purification is required for decades or even a hundred years .Contaminated area is difficult to determine. And It easily causes accident pollution accidentB. The influence of coal mining on l
10、and resourcesCoal is layered sedimentary deposit, thickness relatively smaller, and unit area production capacity is low. During mining, a lot of rooms in the down hole form goafs. Roof risk falls and the strata move cause the ground subsidence, forming the low-lying areas on the surface. Due to the
11、 surface groundwater level is shallow,Some form swamp or product pools in low-lying place. Some perform both deep and wide cracks and form serious landslides hazard. Because of forming Swamps or product pool, landslides, Cultivated lands in the Mining area are reduced or sabotaged. At the same time,
12、 ecological environment also have been affected. According to estimation, the national subsidence area in 0.2 millionabove which average recovery 10,000 t coal. The country had been mining subsidence land 45 million2According to statistics, the number of gangue dumps in the national large and medium
13、-sized coal has more than 1500 at present (not including nearly 80,000 towns and individual small coal gangue piles of gangue piled mountain), the amount of gangue mountain up to 3 billion tons. The annual production of raw coal is 1.2 billion tons or so in our country, and the coal gangue emissions
14、 output accounts for8%一20% of raw coal production generally, an average of about 12%,the coal gangues annual emissions is about 1.5 billion tons, wide range of distribution and complex chemical composition3. There are great threats and harm for human survival environment.C. The influence of coal min
15、ing on atmosphere Air pollution of coal mine in our country is primarily Bituminous Coal. The serious pollution amount to the most serious pollution of developed countries at 5060s in 20th century. The atmospheric pollution of Bituminous Coal in the coal mine area mainly comes from various coal-fire
16、d boiler, industrial cellar stove and thousands of personal cooking stove buring coal. And the pollution from spontaneous combustion of the waste dumps. The gangue dumps could combust spontaneously, discharge dust, SO2, CO, H2S and other noxious gas. And it also pollutes atmospheric environment seriously, damage our health. During the process of carriage, handling and piling, when the air speed reaches to 4.8 m/s, gangue dust will be suspe
