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A platform for research: civil engineering, architecture and urbanism
Construction method for firstly temporarily supporting high and steep slope and then permanently supporting high and steep slope
The invention discloses a construction method for firstly temporarily supporting and then permanently supporting a high and steep slope. The construction method is specifically implemented according to the following steps: step 1, drilling a hole in the excavated high and steep slope; 2, a pre-stressed anchor cable penetrates into the drilled hole, and grouting is conducted on an anchoring section in the drilled hole; thirdly, a steel anchor head is arranged, and a jack is arranged on the steel anchor head to conduct primary tensioning on the anchor cable; 4, after the high and steep slope is basically stable, a reinforced concrete plate is permanently constructed, a hole is reserved in the reinforced concrete plate, and the anchor cable in the hole is protected; and 5, the reinforced concrete slab is subjected to 28-day-age equal strength, the steel anchor head anchor cable clamp is loosened through the jack, and then secondary tensioning is conducted through the jack on the basis of the reinforced concrete slab. The problem that the construction safety is affected due to the fact that the supporting operation period of the high and steep slope with poor geological conditions of existing hydroelectric and hydraulic engineering exceeds the self-stabilization time of the high and steep slope is solved.
本发明公开了高陡边坡的先临时支护再永久支护的施工方法，具体按以下步骤实施：步骤1，在完成开挖的高陡边坡进行钻孔；步骤2，在钻孔内穿入预应力锚索，进行钻孔内锚固段注浆；步骤3，安置钢锚头，并在钢锚头上安置千斤顶对锚索进行一次张拉；步骤4，在高陡边坡基本稳定后永久施工钢筋混凝土板，并在钢筋混凝土板上留孔、保护孔内锚索；步骤5，对钢筋混凝土板进行28天龄期等强，采用千斤顶松开钢锚头锚索卡具，然后以钢筋混凝土板为基础采用千斤顶进行二次张拉。本发明解决了现有水电水利工程地质条件较差的高陡边坡支护作业期超出其自身稳定时间影响施工安全的问题。
Construction method for firstly temporarily supporting high and steep slope and then permanently supporting high and steep slope
The invention discloses a construction method for firstly temporarily supporting and then permanently supporting a high and steep slope. The construction method is specifically implemented according to the following steps: step 1, drilling a hole in the excavated high and steep slope; 2, a pre-stressed anchor cable penetrates into the drilled hole, and grouting is conducted on an anchoring section in the drilled hole; thirdly, a steel anchor head is arranged, and a jack is arranged on the steel anchor head to conduct primary tensioning on the anchor cable; 4, after the high and steep slope is basically stable, a reinforced concrete plate is permanently constructed, a hole is reserved in the reinforced concrete plate, and the anchor cable in the hole is protected; and 5, the reinforced concrete slab is subjected to 28-day-age equal strength, the steel anchor head anchor cable clamp is loosened through the jack, and then secondary tensioning is conducted through the jack on the basis of the reinforced concrete slab. The problem that the construction safety is affected due to the fact that the supporting operation period of the high and steep slope with poor geological conditions of existing hydroelectric and hydraulic engineering exceeds the self-stabilization time of the high and steep slope is solved.
本发明公开了高陡边坡的先临时支护再永久支护的施工方法，具体按以下步骤实施：步骤1，在完成开挖的高陡边坡进行钻孔；步骤2，在钻孔内穿入预应力锚索，进行钻孔内锚固段注浆；步骤3，安置钢锚头，并在钢锚头上安置千斤顶对锚索进行一次张拉；步骤4，在高陡边坡基本稳定后永久施工钢筋混凝土板，并在钢筋混凝土板上留孔、保护孔内锚索；步骤5，对钢筋混凝土板进行28天龄期等强，采用千斤顶松开钢锚头锚索卡具，然后以钢筋混凝土板为基础采用千斤顶进行二次张拉。本发明解决了现有水电水利工程地质条件较差的高陡边坡支护作业期超出其自身稳定时间影响施工安全的问题。
Construction method for firstly temporarily supporting high and steep slope and then permanently supporting high and steep slope
高陡边坡的先临时支护再永久支护的施工方法
WANG YICUN (author) / WANG FENG'AN (author) / QUAN FENG (author) / SHAN QING (author) / YANG SHAOWEI (author)
2023-07-07
Patent
Electronic Resource
Chinese
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