回采区域隐蔽空巷探测-钻孔-注浆充填一体化工艺
本发明涉及煤矿残采区灾害防治与安全开采相关技术领域,尤其涉及回采区域隐蔽空巷探测‑钻孔‑注浆充填一体化工艺,包括采用物探初查与钻探验证相结合的方法确定空巷参数,在掘进工作面布置多组不同深度的超前预注浆钻孔并注入速凝浆液,在回风顺槽垂直于运输顺槽布置注浆钻孔并采用渐进式工艺进行埋管注浆,在相邻注浆孔中间补打检查孔进行效果检测与补充注浆。本发明可准确确定空巷参数,提高注浆充填接顶率,消除注浆盲区,保障回采工作面安全推进。
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