| Mining area hydrogeology, engineering g Coal is the indispensable material base, social development and national economy is one of most important energy and raw materials, has a pivotal role in the construction of well-off society in the country. China coalfield hydrogeology, engineering geology, environmental geology condition is very complex, the mine water inrush accidents occur frequently, a serious threat to the mine safety in production, but also caused a great loss to national economy.After to Ba Yan Chai Da Mu mine on the detailed survey of coal exploration, mining field has identified exploration area within the scope of minable seam 4 layer, simple structure and is very stable. Exploration area, a total of 2188 billion tons of coal resources. The exploration area has abundant resources, coal quality is good, mining technical condition of medium, the obvious economic significance.This study USES field hydrogeology survey, pumping test, rock mechanics experiment, water quality analysis and indoor data analysis, the method of combining to Pakistan, analyzed the hydrogeological characteristics of qaidam field evaluation, and put forward the corresponding countermeasures. The exploration of the conclusion;(1) On the basis of the hydrogeological investigation and field experiment, found out the he aquifer and water-resisting layer of qaidam field space distribution pattern, analysis summarized the runoff discharge conditions of groundwater mining field.(2) On the basis of rock mechanics experiment, using the empirical formula to calculate the water flowing fractured zone height, on this basis to determine the main water filling of mine water gushing water.(3) The big well method is used to predict the mine water inflow of the exploration area, big well method to predict water inflow of 20914 m3 / d, reliable calculation results, in the future, as big well method to predict water inflow of 20914 m3 / d mine design basis for the future. |
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