高压富水条件下破碎巷道钻孔施工及防治水技术

发布时间：2018-03-22 06:22

本文选题：高压富水　切入点：破碎底板　出处：《煤矿安全》2015年01期 　论文类型：期刊论文

【摘要】：基于义煤集团金鼎矿风井回风大巷高压富水及破碎底板等复杂地质条件,研究了复杂地质条件下钻孔施工技术,并在此基础上对高压富水巷道突水原因进行分析,采用高性能注浆材料对巷道底板进行注浆堵水,对巷道底板突水进行治理。结果表明:巷道底板距寒灰水仅为40 m,在前期钻孔施工影响下,寒灰水被导入底板浅部,在矿山压力和高承压水共同作用下,巷道出现破碎和底鼓导致巷道涌水量不断增加。复杂地质情况造成巷道钻孔施工困难,通过多种钻孔施工方法相结合的方案,成功施工了注浆钻孔。同时通过对巷道底板浅部离层区及寒灰含水层浅深部相结合的注浆加固方式,有效的降低了巷道涌水量,并对破碎巷道进行加固,有效的解决了巷道施工难题。
[Abstract]:Based on the complex geological conditions such as high pressure water enrichment and broken floor in the return air roadway of Jinding Mine of Yiwei Coal Group, the drilling construction technology under complex geological conditions is studied, and the causes of water inrush in high pressure water-rich roadway are analyzed. The high performance grouting material is used for grouting water plugging of roadway floor, and the water inrush from roadway floor is treated. The result shows that the distance between roadway floor and cold ash water is only 40 m. Under the influence of early drilling construction, cold ash water is introduced into the shallow part of the floor. Under the joint action of mine pressure and high pressure water, the breakage of roadway and the bottom bulging result in the increasing water quantity of roadway. The complicated geological conditions make the construction of roadway drilling difficult, and the method of combining various drilling methods is adopted. The grouting borehole is successfully constructed. At the same time, the grouting reinforcement method which combines the shallow separation area of the roadway floor and the shallow depth of the cold ash aquifer can effectively reduce the water inflow of the roadway and reinforce the broken roadway. Effectively solve the roadway construction problems.
【作者单位】：河南工业和信息化职业学院;
【分类号】：TD745

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