摘要:
为了建立废弃巷道蓄排水系统,通过实行“避峰就谷”的排水措施减少矿井排水费用。基于水力学公式和质量守恒定律,推导了倾斜管道形状蓄水区域的蓄排水公式,并从安全和经济两方面设计了排水设施。提出了井下蓄排水系统的有效库容和无效库容的概念,计算了重力自由出流时,不同涌水条件下的蓄排水特征值。分析了从满库至空库过程中水头、排水量和蓄水排放变化情况。结果表明,从满库排水至空库过程中,水头线性减小至最低水头。在前1/3时段内,近一半的库容量已经被排放;前2/3时段内排水量线性减少,库容总量的80%已经被排放;后1/3时段内,排水量快速减少至涌水量,仅排放了整个库容总量的20%。
Abstract:
The system of water storage-drainage in abandoned roadway was established in the paper,it takes measures of impounding at peak of electricity costs and draining at valley of electricity costs in order to reduce expense of mine drainage.Based on previous research,formulas of water storage-drainage for area with gradient conduit shape were derived from hydraulic formula and mass conservation equation,drainage facilities were designed from security and economy.The conceptions of useless storage and useful storage of system were elicited.Eigenvalue of water storage-drainage under the conditions of gravity and different inflow were calculated.The change of water head,discharge,discharge proportion of storage from reservoir full to empty were analyzed.The results showed that,water head decreases linearly from maximum to minimum while draining from full-reservoir to empty-reservoir.Meanwhile,about half of storage has been drained at the first 1/3 time;then,80% of storage has been drained at the 2/3 time and discharge decreases linearly;at the last 1/3 time,discharge decreases quickly to water inflow and only 20% of storage is drained.
百度学术
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