摘要
采用"大井法"预测门克庆煤矿首采工作面采后涌水量,反映预报区范围内含水层由承压转无压到疏干过程,预测中试验将形状复杂的群孔放水系统看成是一个"大井"在工作,把不规则的影响边界圈定的面积,等同于大井的面积,整个工作面开采后的涌水量,可以近似应用裘布依的稳定流基本方程求解。基于井下群孔放水试验,较为准确地预测了工作面涌水量,在工作面回采过程中得到了较好的验证。
Prediction of Mehnke first coalface of postharvest water inflow by ＂big well method＂, reflect the forecast range of aquifer by confined unconfined aquifer to the drainage process, prediction of test group hole drainage system with complex shape as a ＂big＂ in the work area, the influence of irregular boundary delineation well, equivalent to the area, water inflow of the working face after mining, can approximate application of Dupuit stable flow of basic equations. Based on the test of underground hole drainage test, the water inflow of working face is accurately predicted, and it has been well proved in the mining process of working face.
出处
《煤炭技术》
北大核心
2017年第11期162-163,共2页
Coal Technology
基金
国家自然科学基金资助项目(51574006
51474006
51374013)
关键词
群孔放水
影响边界
大井法
涌水量预测
water holes
boundary effect
big well method
water inflow prediction
