大奔流沟料场高边坡支护型式和施工质量控制

Supporting type of high slope at Dabenliugou quarry and construction quality control

锦屏大奔流沟料场开挖边坡高、面积大,地形地质条件复杂,前所罕见。通过前期地质条件分析和地质补充勘测,完善了边坡支护型式。采用深、浅层支护相结合为中心,临时支护为基础的支护方式。介绍了各种支护工程,包括预应力锚索、预应力锚杆、锚喷支护、锚杆束的施工要点。通过严格的施工质量控制,边坡支护顺利完成。监测数据表明,料场边坡稳定性较好,满足永久边坡治理要求。

The excavated slope at Dabenliugou Quarry is high with large area and complicated geological condition,which is rarely seen before.The supporting type of the slope is perfected through geological condition analysis in previous stage and supplementary geological survey.The supporting solution,centering on combination of deep and shallow supporting,and taking temporary support as foundation,is adopted.The construction key points of supporting projects,including prestressed anchor cable,prestressed anchor,shotcrete-bolt support,anchor beam,are introduced.The slope support is completed successfully through strict construction quality control.The monitoring data show that the slope is in a stable state and meet the demand of permanent slope governance.