全深冻结井筒冻结孔导水通道预注浆技术

发布时间：2018-04-18 16:13

本文选题：全深冻结凿井法 + 隐蔽致灾通道　；参考：《煤炭科学技术》2017年12期

【摘要】：为预防冻结孔导水通道诱发矿井水害,基于冻结孔致灾机理及涌水特征的深入研究,归纳总结了冻结孔诱发水害类型,即井壁渗(淋)水型、井筒辅助构筑物高压大流量涌水型及工作面涌水激增型。在此基础上,提出了冻结孔隐蔽致灾通道井筒内预注浆治理技术,包括最佳注浆治理区段确定、冻结孔探查及空间定位、注浆方案设计与动态调整、活动式工作平台设计与构筑、施工参数动态调整及注浆效果检验等关键步骤。依托营盘壕煤矿副井冻结孔环形空间预注浆治理工程,该技术获得成功应用并取得理想的注浆封堵效果,且在治理工期及成本控制上具有较大优势,对我国西部矿区类似工程具有一定的参考价值。
[Abstract]:In order to prevent mine water hazard caused by freezing hole diversion channel, based on the deep study of the mechanism and characteristics of freezing hole water inrush, the types of water hazard induced by freezing hole, I. e., well wall seepage (leaching) type, are summarized and summarized.Shaft auxiliary structure high pressure and large flow surge type and face surge type.On the basis of this, the pre-grouting treatment technology in the shaft of the hidden disaster caused passage of freezing hole is put forward, including the determination of the best grouting treatment section, the exploration and location of the frozen hole, the design and dynamic adjustment of the grouting scheme.The key steps are the design and construction of movable working platform, the dynamic adjustment of construction parameters and the testing of grouting effect.Relying on the pre-grouting treatment project of freeze-hole annular space in the auxiliary shaft of Yingpanou Coal Mine, the technology has been successfully applied and achieved ideal grouting sealing effect, and it has great advantages in the control period and cost control.It has certain reference value for similar projects in western mining area of our country.
【作者单位】：兖州煤业鄂尔多斯能化有限公司;兖州煤业鄂尔多斯能化有限公司石拉乌素煤矿;兖州煤业鄂尔多斯能化有限公司营盘壕煤矿;山东科技大学地球科学与工程学院;
【基金】：国家自然科学基金资助项目(51509148,41372290) 山东省中青年科学家科研奖励基金资助项目(BS2015NJ010)
【分类号】：TD745.2

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