R/S Analysis and its Application in the Forecast of Mine Inflows

In this paper, the status quo and modeling principles of R/S analysis of non-linear theory are introduced and reviewed. Given the hydro-geological conditions of the Wutongzhuang coal mine, Hurst exponents of mine inflow for the main shaft, venti- lating shaft and auxiliary shaft were obtained using R/S analysis, which are 0.772 0, 0.824 7 and 0.905 1 respectively. Since all of the three Hurst exponents are larger than 0.5, it can be concluded that the trend of mine inflow are a long-term as well as persistent problem. Based on the level of duration, the shafts can be listed in decreasing order as the auxiliary shaft, the ventilation shaft and the main shaft, which appears identical with the actual situation of the mine inflow. With R/S analysis, a new method for long-term forecasting of mine inflows is provided.

矿井废水回灌工程试验研究

本文首先论述了梧桐庄矿矿井水回灌的必要性和回灌工程的意义,介绍了地下水回灌的技术方法,然后论证该矿回灌所具备的水文地质条件。在此基础上,进行了将矿井水回灌于奥灰含水层的技术研究,确定了连续回灌与定时回扬回灌试验工程方案,以回灌水位降幅削减值和水量降幅削减值作为回灌效果的评价标准,回灌前后水位降幅削减值3.36 m,量水位降幅削减值0.224×10-3m/m3。最后从回灌后水文地质条件、回灌处理水质对含水层的影响和回灌工程方案三个方面进行了矿井水回灌的可行性评价。

综合防治水技术在梧桐庄矿的研究与应用

通过对梧桐庄矿水文地质条件及出水形式的分析,介绍了梧桐庄矿综合防治水工作程序。详述了采区准备巷道掘进及异常地段的超前探水、工作面防治水设计、工作面巷道掘进及异常地段的超前探水、工作面底板综合探测、工作面底板预注浆加固改造、工作面开采安全性评价及突水抢险预案和工作面回采期间的水文地质观测等防治水方法及取得的效果。