顶板覆岩离层水体分布规律勘查研究

为研究顶板覆岩中离层水体的分布规律,运用注水井中测流、钻孔电视录像技术手段进行探查。通过对淮北某矿现场实测资料进行分析,受单层采动影响,顶煤层未采区段覆岩中形成真空离层带;受重复采动叠加影响,在顶煤层覆岩中产生离层带,并形成积水离层带,其分布面积是有限的。离层水体在垂向和水平方向上是不连轩的,是相对封闭的有限水体。对离层带的分布规律及其水文地质特征取得了基本的认识。

Survey study on Distrbution laws of Separated Stratum Water in roof Overlying Strata

Infusion flow measurement in well and borehole tele-recording were used for survey in order to study the distribution laws of separated strata water in roof overlying strata. Through the analysis of on-the-spot measuring data, the vacuum separated strata zone was formed in the upper virgin roof overlying strata under the condition of single mining; the separated strata zone and waterlog separated strata zone was formed in the upper roof overlying strata under the condition of superimposed mining, but their distributing areas are limited. Separated strata water is discontinuous along the vertical and the horizontal direction and is a comparatively obturated and limited water. The knowledge about distribution laws of separated strata zone and hydro-geological feature are basically acquired.