济三煤矿注水法预防井筒破坏工程参数

Engineering parameters of water injection to control mine shaft damage at Jisan coal mine

为将注水法应用到实践工程中,以济三矿主井、副井和风井为例,运用GMS软件和理论分析对注水减沉法防治井筒破坏进行了工程参数研究,分析了注水孔结构、注水孔与井筒的位置关系、注水孔的布置和注浆帷幕对注水效果的影响.研究结果表明：注水孔孔径大小对注水效果影响不大;注水孔距离井筒约20-30 m是较合适的;钻孔对称布置对井筒更有利,防治工程选择4个基本对称注水孔更有利于保证井筒附近整体地下水位的稳定和平衡.

n order to apply water injection method to engineering practice, this paper studied the engineering parameters for the water injection method used to precipitation reduction control of shaft damages by using the GMS software and theoretical analysis, and analyzed the water injection hole structure, the positional relationship between water injection holes and shaft, the layout of a water injection hole and grouting curtain on water flooding effect. The results show that the size of water injection hole has little influence on the effect of injection. The proper distance between water injection hole and shaft is about 20-30 m. Drilling symmetrical arrangement is more favorable to the wellbore, prevention and control engineering when layout 4 basic symmetrical injection hole is more advantageous to guarantee the overall level of underground water near the well bore stability and balance.