Through analyzing the impact of Huainan mining area ecological environment to subsidence pool waters and the species changes of plankton in excavating coal subsidence pools of different time order, the response of the plankton in it to the mining area ecological changes was inquired, from which it was found that in the initial stage of subsidence Bacillariophyta-Euglenophyta were the dominant; in the metaphase with the increase of nutrition level, Chlorophyta-Cyanophyta became the main algae in waters; after a long time of high eutrophication level, the circumferential environment of the subsidence pool was stabilized gradually, the influence factors also tended to be simplified, and Bacillariophyta-Euglenophyta became again dominant algae. The species of zooplankton showed an evident downtrend and the dominant species were also changed. This explained that the succession of the plankton in subsidence pools differed from general reservoirs and lakes.

Excavate coal subside seeper area is the spec ial component of the sur face water in Huainan. This paper analyzes the aquatic environment status for th e excavate coal subside seeper area and the function which was sustained by the actual waterbody in mining area in Huainan, and finds that the aquatic environme nt of it has been effected in different extent. It is imperative to strengthen su pervise of the aquatic environment for the excavate coal subside area in Huainan .

以2004年夏季(4～8月)对淮南矿区三个不同塌陷时序塌陷塘每月一次的现场调查为基础,分析了采煤塌陷塘水质、不同理化因子的状况及相关关系,研究表明塌陷塘水质金属指标普遍不超标,营养盐含量较高,主要为P限制,同时划分了其主要的影响因子,这为其以后发展水产业和持续利用渔业资源提供了一定的理论基础依据.

第四纪底砾层直接覆盖在谢桥煤矿煤系地层之上,其隔水性能影响到防水煤柱的合理留设.为论证底砾层的隔水性,分析研究其赋存特征、岩性组合,并对其进行抽提水、简易水文和水动态观测试验.结果表明:第四纪底砾层不含水,渗透性极弱而且具有良好的隔水性,是阻碍新生界中部含水层危害矿井安全开采的良好隔水层,为合理留设煤柱、确定回采上限提供可靠的依据.