内容简介
DB50/T 989-2020地质灾害治理工程施工技术规范
Technical specification for construction of geological disaster control project
2020-06-01实施
2020-04-10发布
目 次
前 言...........................................................................................................................................................1
1范围................................................................................................................................................................. 1
2规范性引用文件.............................................................................................................................................1
3术语和定义.....................................................................................................................................................1
4施工准备.........................................................................................................................................................2
4.1一般规定.................................................................................................................................................3
4.2临时设施.................................................................................................................................................3
4.3施工资源配置.........................................................................................................................................3
4.4测量工作.................................................................................................................................................4
5土石方工程.....................................................................................................................................................4
5.1一般规定.................................................................................................................................................4
5.2削方减载.................................................................................................................................................4
5.3回填反压.................................................................................................................................................6
5.4基槽开挖.................................................................................................................................................8
5.5坑槽填土.................................................................................................................................................9
5.6危岩清除...............................................................................................................................................10
6排水工程.......................................................................................................................................................11
6.1一般规定...............................................................................................................................................11
6.2截排水系统...........................................................................................................................................12
6.3排水孔...................................................................................................................................................13
6.4排水廊道...............................................................................................................................................13
7挡土墙工程...................................................................................................................................................15
7.1一般规定...............................................................................................................................................16
7.2基础.......................................................................................................................................................16
7.3墙体.......................................................................................................................................................17
7.4墙背回填...............................................................................................................................................19
8抗滑桩工程...................................................................................................................................................19
8.1一般规定...............................................................................................................................................19
8.2人工挖孔灌注桩...................................................................................................................................20
8.3机械钻孔灌注桩...................................................................................................................................23
9危岩工程.......................................................................................................................................................25
9.1一般规定...............................................................................................................................................25
9.2砂浆锚杆...............................................................................................................................................25
9.3预应力锚索...........................................................................................................................................28
9.4格构.......................................................................................................................................................29
9.5嵌补支撑...............................................................................................................................................30
9.6防护网...................................................................................................................................................30
10护岸(坡)工程.............................................................................................................................................34
10.1一般规定.............................................................................................................................................35
10.2水下抛石.............................................................................................................................................35
10.3护坡面板.............................................................................................................................................36
10.4生态植物.............................................................................................................................................36
11泥石流工程.................................................................................................................................................37
11.1一般规定.............................................................................................................................................37
11.2拦挡坝.................................................................................................................................................37
11.3排导槽.................................................................................................................................................38
11.4渡槽.....................................................................................................................................................38
12注浆加固工程.............................................................................................................................................38
12.1一般规定.............................................................................................................................................38
12.2地裂缝充填灌浆.................................................................................................................................39
12.3软弱带地层固结注浆.........................................................................................................................39
附录 A（规范性附录）地质灾害治理工程危险性较大的分部分项工程................................................. 40
本标准按 GB/T 1.1-2009 给出的规则进行起草。
本标准由重庆市规划和自然资源局提出并归口。