深井工程降水原理与实践

Theory and Practice of Deep Well Dewatering

深井工程降水是利用非稳定流及群孔干扰原理,通过强抽强排,使深井所在的含水层中的地下水出现一个局部的负压区域,从而使降水孔所圈定的小范围内的水位在一定时间内降低,最终达到控制地下水,保证深井地下工程正常进行的目的。通过近年来在宁东各煤矿工程降水实践中降水时间、所需泵量等问题的推算过程中的应用,取得一定效果。

The precipitation in deep engineering is the use of non-steady flow and the base hole jamming by strong pumping intensity discharge, so deep aquifer where the groundwater occurs in a local area of negative pressure, so that the delineation of precipitation of small holes within the lower the water level in a certain period of time, and ultimately to control the groundwater deep underground to ensure the normal purposes. In recent years, all through the mine dewatering Ningdong precipitation time in practice, the required pump capacity and other issues during the application of the projection, and achieved certain results.