土方支护及运土作业安全技术--章仁根的blog

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土方支护及运土作业安全技术 | 2011-8-16 8:15:00

1、开挖沟、坑、槽时，有下列情况之一时，应按支撑结构表进行支撑，应参照表4·2·4施工。

支撑结构型形表表4·2·4

土质情况	基坑、沟、槽深度	支撑方法
天然含水量的粘土	3m以内	不连续支撑
地下水很少	3—5m	连续支撑
松散和含水量较高的粘土	不论深度	连续支撑
松散和含水量较高的粘土地下水较多有带走土粒的危险	同上	用板桩支撑

2、固壁支撑所用木料不得腐坏，断裂，板材厚度不小于5cm，撑木直径不小于10cm，支撑方法按土质及施工方法具体而定。

3、安设固壁支撑时，支撑木板应严密靠紧于沟、槽、坑的两壁，并用支撑与支柱将其固定牢靠。

4、雨季施工时，应对原有排水系统进行检查或疏竣及加固，必要时应增加排水设备，保证水流畅通。

5、用手推车装运土时，应注意平稳，掌握手推车的重心，不得猛跑或撒把溜放，其两车距离不小于2m，下坡不小于10m。

6、手推车运土不得过满，单人运土不得超过50kg，两人抬土不得超过80kg，不准甩丢，起落要相互配合。

7、拆除固壁支撑应自下而上进行，填好一层，再拆一层，不得一次拆到顶。

8、用滑轮吊运时，吊运四周禁止行人通过，并设专人看守和挂警示牌。

By:章仁根 | 阅读全文 | 回复(15) | 引用通告 | 编辑

标签：土方支护运土作业安全

Re:土方支护及运土作业安全技术 | 2011-8-16 8:16:58

掌握技术，安全作业。

By:章仁根 | 个人主页 | 引用 | 返回 | 删除 | 回复

原创 | 2016-9-6 20:27:40

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原创 | 2016-9-28 20:05:14

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原创 | 2016-9-30 14:45:20

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