大孔径直排孔的作用是加强矿井排水能力，保证煤矿安全生产。
The large diameter direct drainage borehole is used to strengthening mine drainage capacity, to ensure coalmine safety production.
本文在分析矿井排水系统一般生产规律的基础上，建立了矿井排水系统的随机模拟模型。
Based on analysis of the general regularity of mining drainage system, a random simulation model of mining drainage system is developed.
文中论述了建立矿井排水控制系统的重要性，并探讨了矿井排水控制系统的结构及其实现的功能。
This text discusses the importance of building up mine well draining and controling system, and primarily inquires into the structure and function of mine well draining and controling.
矿井排水设备消耗的电能占矿井总耗能量的比重很大，其运行经济性对矿井生产成本具有重要影响。
The electricity of coal mine main pumping equipment consuming constilute important statute, its economic operation has important effects to mine production costs.
本文讨论了大降深矿井排水预测中 ，利用迭代法求解数值模型时 ，地下水位计算误差的影响因素。
The influential factors of calculation error for groundwater table are discussed by using the iteration method to find solution of numerical model in the mine drainage forecast of deep drawdown.
根据矿井排水系统一般可以简化为串联复杂管路系统的特点，采用特征线法模拟其断电停泵的瞬变过程。
Since a mine pumping system can generally be simplified into a complicated pipe-line system in series, the transient process is simulated by a method of characteristic line.
对矿井排水系统的安全性进行了分析，提出了泵组排水系统技术方案，并对这种方案的安全性、技术性、经济性给予探讨。
The safety of pumping water system in the mine is analysed and technique scheme of pump group pumping water system is put forward.
对矿井排水系统的安全性进行了分析，提出了泵组排水系统技术方案，并对这种方案的安全性、技术性、经济性给予探讨。
The safety of pumping water system in the mine is analysed and technique scheme of pump group pumping water system is put forward. And safety, technicality, economy of this measure has been studied.
本文在认真分析矿井涌水规律的基础上，应用随机服务理论的观点和方法，建立了矿井排水的排队论模型和系统可靠性模型。
Based on analysis of the regularity of mine water, the concepts and methods of the stochastic serve theory being applied, the queueing and reliability models of mine drainage system are developed.
峰峰煤田矿井排水量大，大量矿井排水不仅造成水资源的严重浪费，而且污染环境，另一方面，该区工农业用水又十分紧缺。
There is a massive drainage in Fengfeng coal field, which not only causes the serious waste of water resources, but also environmental pollution.
根据涌水量预计结果，为矿井设计排水方案的最优化选择提供科学依据。
Finally, according to the result, it provides scientific basis for the optimization selection of mine design drain scheme.
目前国内各矿井的排水系统多采用传统的继电器控制方法，用人工进行监测。
At present, most drainage systems of all domestic coal mine well adopt conventional means of relay controlling, inspected artificially.
随着矿井的技术改造和生产能力的提高，原有中央水泵房的排水能力已不能满足生产需要。
Along with the technique reformation of the mine and the exaltation of the production abilities, the drainage ability of the original central pump house of water can't satisfy it.
介绍了一种矿井中央泵房主排水自动化控制系统的组成和控制原理。
In this paper, the composition and control principle of the automation control system of main drainage pump used in coal mine are introduced.
据某矿井下实际情况，本文首先进行了排水设备的选择设计，然后根据排水控制的要求，进行自动控制方面的设计。
According to actual conditions of some coal mine well, at first this text chose and designed drainage equipments, then designed autocontrol part based on drainage control request.
对气浮法处理煤矿井下排水进行了试验研究。
The experiments of mine wastewater of air floatation are presented.
井下水泵房排水系统担负着整个矿井积水排除的任务，其安全可靠性直接影响矿井生产的效率和安全。
Pumping collected water from mining area is the job of drainage system in pumping house under mine, which has closely relations to mining security and efficiency.
通过调整矿井主排水泵流量，使矿井主排水设备安全经济运行，节约投。
By adjusting main drain off water pump flow quantity, this paper makes main drain off water equip running safe, economy, saving investment.
实际应用表明，该系统提高了煤矿井下排水的安全性和可靠性。
The actual application showed that the system improves safety and reliability of underground drainage.
为保证矿区安全开采，采矿本身要求排出大量的矿井水，这不可避免地使附近的地下水水位下降，并可能影响到已有地下水水源地的供水安全，产生供、排水矛盾。
However, it is inevitable to decrease the groundwater level around the mining area and even to influence the water supply safety of the constructed groundwater source fields.
在煤矿井下的排水系统中，需要多台排水泵协调地工作。
Mechanics research on chief draining pump cavitation damage in coal mine;
在煤矿井下的排水系统中，需要多台排水泵协调地工作。
Mechanics research on chief draining pump cavitation damage in coal mine;
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