河北省滦县李家屿灰场2#副坝区灰水运动的水文地质评价

韩家哨村位于河北滦县李家屿灰场北部谷地，地势低于灰场，距离约800m。灰场运行期间，该区地下水出现水位升高及水质变差等问题。本文从水文地质条件角度，详细研究灰水的运移途径及其对该区地下水的影响。韩家哨村区域地下水系统分为上层滞水和孔隙一裂隙（溶隙）潜水含水层系统。潜水含水层系统水力传导系数为172．6～203．4m^2／d。地下水补给主要来源于韩家哨村以南坝后地形较高区域及灰水。灰水渗漏优势区韩家哨村南部宽约200m的带状区域。灰场堆灰形成新的地下水分水岭致使灰水在20副坝坝前垂直下渗进入风化带，沿白云岩裂隙（溶隙）补给潜水含水层，并向韩家哨村区域流动补给孔隙含水层，改变后的潜水部分通过民井向外排泄。

HYDROGEOLOGICAL ASSESSM ENT ON ASH-WATER MOVEMENT IN 2# SUB DAM OF LIJIAYU ASH FIELD AT LUANXIAN,HEBEI,PRC

Hanjiashao Village is located in the north valley of 2# sub dam of Lijiayu Ash Field where the distance is 800 m far away from the village at Luanxian, Hebei Province. The groundwater table near the village goes up and groundwater quality changes badly during the ash field running. Two groundwater systems, which are perched water system and unconfined aquifer system are classified in the village area. The hydraulic conductivity of the unconfined aquifer is 172.6-203.4 m^2/d. The infiltration area of the precipitation and ash water where is recharge area of the aquifer system is located in the south higher slope of the dam and ash field. The flow way of the ash water and its effects on groundwater are evaluated. The preferential flow zone with 200 m width occurs between the sub dam and the village. The new groundwater watershed appears after ash field running. The ash water infiltrates directly to weathered zone first at the ash field, and recharge to the unconfined fractured dolomite rock aquifer, in which water discharge to the porous aquifer where the wells are dug by residents of the village.