华北型煤田奥陶系灰岩水的控制与管理

CONTROL OF GROUNDWATER FROM ORDOVICIAN LIMESTONE IN NORTH CHINA’S COAL FIELDS

本文以地下水水力模型为基础，应用系统工程的方法，建立起华北型煤田奥陶系灰岩水的控制与管理模型，并在河南省鹤壁一矿进行了实际应用，解决了奥陶系灰岩水的控制与管理模型，并在河南省鹤壁一矿进行了实际应用，解决了奥陶系灰岩水局部疏水降压时比较棘手的三个问题：（1）不同提前疏降时间，疏水孔最优布局；（2）已知疏水孔布局，各疏水孔最优水量分配与提前疏降时间的关系；（3）提前疏降时间一定时，各疏水孔水量如何分配、如何变化，其经济效益最大和疏水量最小，所取得之成果可作为鹤壁一矿宏观控制奥陶系灰岩水的依据。

A model for controlling groundwater from Ordovician Limestone in North China's coal fields was established by introducing system engineering method based on a groundwater hydraulic model. The model was applied to No. 1 Mine in Hebi, Henan Province. Three knotty problems in partial dewatering were solved. They were. (1) optimum dewatering borehole patterns in different durations prior to coal extraction;(2) the relation between optimum distribution of water quantity from all the boreholes in a given borehole pattern and dewatering time prior to extraction; (3) to dermine the optimum distribution of the amount of drained water among boreholes to minimize the total cost and the amount of water drainage, when dewatering time prior to extraction is given.The results of test are provided as criteria for macro-control of groundwater from Ordovician limestone in Hebi No.1 Mine.