摘要
通过专门设计的物理模型,模拟了不同水文地质与工程地质性质的阻水岩层对其底板高压水侵入过程的阻抗能力,以及不同水压条件下高压水侵入导升过程中的水头损耗。得出了高压水在侵入导升带内的水头损耗分布特点及数量特征;研究了高压水在其上覆阻水岩层中的侵入高度及其最终驻点的残余水头压力;重新评价和改进了突水系数的计算方法。结果表明:隔水层的原始导高带对含水层水头具有较大的消减作用,作用于有效隔水层的实际水头压力远小于含水层的水头压力。
The resisting capacity of different rocks to high pressure water intrusion and the water head loss during its intrusion were modeled and studied by a physical model, The relationships between the water head loss and water resistant rock, water pressure of aquifer were established. The maximum height of water intrusion in different water resistant rock and the residual water pressure in terminal intrusion point were given. The calculation method of water inrush coefficient from coal seam floor was given according to the experiment information. The results show that aquiclude of coal seam floor has obvious elimination to water head, and the actual water pressure exerting to the effective water resistant layer is lower than that of aquifer.
出处
《煤田地质与勘探》
CAS
CSCD
北大核心
2008年第6期38-41,共4页
Coal Geology & Exploration
基金
国家重点基础研究发展计划(973计划)项目(2006CB20220005)
关键词
高压水
侵入导升
水头损耗
残余水压
high pressure water
intrusion
water head loss
residual water pressure
