【摘 要】
：
In order to understand the mechanism and regularity of the groundwater contamination from mine water of abandoned mines, experiments were conducted on an abandoned coal mine in Fuxin, a representative city with lots of mine water in northeast China. The g
【机 构】
：
College of Mechanics and Engineering, Liaoning Technical University, Fuxin 123000, China;College of
论文部分内容阅读
In order to understand the mechanism and regularity of the groundwater contamination from mine water of abandoned mines, experiments were conducted on an abandoned coal mine in Fuxin, a representative city with lots of mine water in northeast China. The groundwater pollution from different contaminants of coal-mining voids (total hardness, SO2-4, Cl and total Fe) and pollution factors transportation situation in the coal rock were simulated by soil column experiment under the conditions of mine water leaching and main water leaching (similar to rainwater leaching), and the water-rock interaction mechanism was discussed during mine water infiltration through saturated coal rock by application of principle of mass conservation, based on physical properties of coal rock, as well as monitored chemical composition. The results show that, compared with the clear water leaching process, trends of change in pollutant concentrations presented different characteristics in the mine water leaching process. Groundwater is contaminated by the water rock interactions such as migration & accumulation, adsorption & transformation,dissolution & desorption and ion exchange during the mine water permeation. The experiments also suggest that at first dissolution rate of some kinds of dissoluble salts is high,but it decreases with leaching time, even to zero during both the mine water leaching and main water leaching.
其他文献
Using visual experimental apparatus,one system(T40,1×10-3 mol/L,nonadded with coal)and another system(T40,2×10-3 mol/L,added with coal)were experimented with for three times and two times.respectively.Five groups of P-T experimental parameters were obtain
Based on the two temporal TM images of 1995 and 2001 of one coal mining area, analyzed the variety information of the coal mining area. Relative registration were done with the two images firstly, then cut out the study area for experimental data, classif
Hongtoushan copper mine was studied by analyzing the type of heat source,the calculation method about thermal releasing in stope, thermal transfer between rock and air, distribution of temperature in stope were formulated. With CFD (Computational Fluid Dy
The parameters are considered as normal random quantities in filtering and prediction, and the observation equations usually are nonlinear ones. The nonlinear equations should be deployed in Taylor\'s formula, adopting to first power of term, by linear
In the course of pushing forward the overall growth capacities of the mining industry and getting adapted to the tense competition after China\'s entry into WTO, it is quite necessary to speed up the process of fostering large state-owned coal group ent
According to the current working status of underground safety management and production scheduling, the importance and existed problem of underground mine radio communication were summarized, and the basic principle and classification of leaky feeder cabl
Distributed virtual coal-mine geography environment(CM-DVGE) researches the virtual reality simulation of coal-mine environment in cyberspace and the performance of coal production process. The goal is to deal with the practical safety problems of observa
Based on the complexity of mine stratum and coupling of the multi-frequency for the damage of mine stratum, using the method of on-site inspection and mathematical statistics, the regulation and nonlinear characteristics of strata collapse in mine stratum
The emergy theory was used to analyze the emergy structure of the ecosystem at reclamation area in order to find the problem existed in the reclamation ecosystem through compared with the modern agriculture. The research results show that the proportion o
By means of numerical simulation, the roadway deformation affected by joints was analyzed and the pre-tensioned bolts for reinforcing roadway roof in jointed rock mass was studied. The results show that the roadway roof deformation increases gradually wit