Comparative Study on Prediction Methods of Mine Inflow—A Case Study of Dazhuang Coal Mine in Gansu Province
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摘要: 矿井涌水量是矿井设计、生产和防排水系统设置及制定矿井防治水措施的主要依据；涌水量预测方式的选择十分重要。笔者采用大井法、廊道法和比拟法对大庄煤矿矿井涌水量进行了计算，并和矿井实际涌水量进行了误差分析，结果表明：①吉哈尔特和库萨金经验公式求出的影响半径一般偏小很多，造成矿井涌水量计算结果偏大，在实践中不适用。②矿井生产阶段比拟法比解析法要更加精确。③在解析法预测涌水量中，建议使用实测影响半径，若无法取得，建议用补给模数法公式计算引用影响半径。④在解析法中，若已有生产矿井的涌水量资料，可考虑利用大井法、集水廊道法公式反求影响半径，在此基础上计算矿井涌水量。若补给条件差，以消耗储存量为主的生产矿井，矿井涌水量计算建议首先采用适合边界条件的非稳定流泰斯公式预测涌水量。Abstract: Mine inflow is the main basis of mine design, production, drainage system and water prevention and control measures.It is very important to choose the prediction method of water inflow.This paper adopted the method, corridor method, analogy method in the coal mine water inflow of Dazhuang colliery was calculated, and the error analysis and the actual location of the mine, the results show that:①George Hal and library sargent empirical formula and the smaller the radius of influence of general many, cause water inflow slants big, calculation results is not applicable in practice.②Comparison method is more accurate than analytical method in mine production stage.③It is recommended to use the measured influence radius in the analytic method to predict the inflow of water. If it cannot be obtained, it is recommended to use the formula of runoff recharge module to calculate the reference influence radius.④In the analytical method, if the existing in the production of the mine water inflow data, can consider to use big well method, water corridor method formula reverse radius of influence, on the basis of the calculation of mine water inflow, if supply condition is poor, mainly consume storage production mine, the mine water inflow of unsteady flow calculation suggest suitable boundary conditions were first introduced in theis formula to predict water inflow.
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Keywords:
- Dazhuang colliery /
- mine inflow /
- error analysis
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