钻锚注一体分段自钻式中空注浆锚索系统及其施工方法
The segmented self-drilling hollow grouting anchor cable system with a rigid-flexible composite structure solves the problem that flexible anchor cables cannot transmit drilling force, realizes integrated drilling, anchoring and grouting construction, and improves the stability and reliability of surrounding rock support.
CN122407256APending Publication Date: 2026-07-17CHINA UNIV OF MINING & TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHINA UNIV OF MINING & TECH
- Filing Date
- 2026-06-17
- Publication Date
- 2026-07-17
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Figure CN122407256A_ABST
Abstract
一种钻锚注一体分段自钻式中空注浆锚索系统及其施工方法，属于煤矿巷道支护技术领域，系统：末端、中部和首端刚柔复合单元依次连接；末端、中部和首端刚柔复合单元均包括由内到外依次固接的注浆管、柔性锚索段和刚性套管；中部注浆管的首末两端分别与首端注浆管的末端和末端注浆管的首端固定连接；中部刚性套管的首末两端分别与首端刚性套管的末端和末端刚性套管的首端固定连接，中部刚性套管的首端开设至少一个出浆口；扩孔钻头同轴固定安装在首端刚性套管的首端。方法：采用分段钻进、逐段连接的作业方式，在钻进过程中，使刚性套管随钻头跟进并实时支护孔壁，钻进结束后进行注浆作业并施加预紧力。本发明能提升围岩支护的稳定性和可靠性。
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