DB64/T 1646-2019
岩土工程勘察标准
2019-07-23 发布
2020-10-23 实施
目次
前言
1.总则.....................................1
2規范性引用文件................................
3术语和符号......................................2
3.1术语......................................2
3.2符号......................................3
4基木规定.......................................4
4.1岩土工程勘察分级................................4
4.2前期工作....................................7
5各类工程勘察基本要求 ................................8
5.1工业与民用建筑 ................................8
5.2边坡工程.................................11
5.3 程....................................................12
5.4桩基础...................................................13
55市政工程................................15
5.6废弃物处理工程................................15
5.7地基处理...................................18
5.8既有建筑物的増觥和保护............................19
5.9新能源电场工程 ...............................21
6不良地质作用和地质灾害 ..............................23
6.1滑坡.........................................23
6.2危岩和崩塌 .....................................24
6.3泥石流........................................25
6.4采空区........................................26
6.5场地和地基的地震效应 ................................28
7特殊性岩土 ....................................... 32
7.1湿陷性黄土和湿陷性土 ............................... 32
7.2    软土 ...................................... 37
7.3    混合土 ..................................... 38
7.4    填土 ...................................... 38
75陆胀岩土 ...................................... 39
7.6盐渍岩土 ..................................... 40
7.7风化岩和残.............................................42
7.8 污染土 ............................................ 42
8地下水...........................................44
8.1    —般規定......................................44
8.2水文地质参数确定 ..................................45
8.3地下水作用的评价 ..................................46
8.4抗浮设防水位.....................................47
9工程地质测绘和调査.....................................47
9.1    一般规定......................................47
9.2工程地质调査.....................................47
9.3工程地质测绘 ....................................48
10勘探和取样........................................49
!0.1    一般規定.....................................49
!0.2勘探点的定位与测鼠 ................................49
10.3    钻探.......................................50
10.4井探、槽探和洞探 .................................51
10.5岩土试样的釆取 ..................................51
10.6    心物理勘探 ...................................52
II原位测试.........................................52
11.1    一般规定.....................................52
11.2载荷球.......................................52
11.3圆锥动力触探试戦 .................................54
!1.4标准贯入试验....................................54
11.5旁压试轮......................................55
11.6波速测试......................................56
12室内试弱.........................................56
12.1    一般規定.....................................56
12.2    土的物理性质试戦 ................................56
12.3    土的压缩-固结试戦 ...............................57
12.4    土的抗剪强度试输 ................................57
12.5    土的动力性质试验 ................................58
12.6岩石试執 .....................................58
13水和土腐蚀性的尚 ....................................58
13.1取样和测试 ....................................58
13.2腐蚀性评价 ....................................59
14现场检執和监测......................................62
14.1    一般规定.....................................62
14.2地基基础的检験和监测................................62
15岩土工程分折评价和成果报吿................................62
15.1    一般规定.....................................62
15.2岩土工程分析评价..................................62
15.3岩土參数的分析和选定 ...........................63
15.4成果报吿的要求...............................64
15.5图表及附件.................................65
附录A（規范性附录）地基承载力修正系数 .......................67
附录B（規范性附录）地基土承载力特征值 .......................68
附录C（规范性附录）银川平原地区粉细砂土压縮模量和地区沉降计算经我系数 .......69
附录D（资料性附录）宁夏湿陷性黄土工程地质分区图 ...................70
附录E（资料性附录）宁夏及临区大地构造图 ......................71
附录F（资料性附录）宁夏地貌分区图 .........................73