岩土锚固与喷射混凝土支护工程技术规范GB-优质资料(可以直接使用，可编辑优质资料，欢迎下载）GBUDC中华人民共和国国家标准PGB50086-2021岩土锚固与喷射混凝土支护工程技术规范Technicalcodeforengineeringofgroundanchoringandshotcretesupport规范修编组2021-07TOC\o\h\zHYPERLINK\l"_Toc298510733"1总则PAGEREF_Toc298510733\h6HYPERLINK\l"_Toc298510734"2术语、符号PAGEREF_Toc298510734\h7HYPERLINK\l"_Toc298510735"2.1术语PAGEREF_Toc298510735\h7HYPERLINK\l"_Toc298510736"2.2符号PAGEREF_Toc298510736\h10HYPERLINK\l"_Toc298510737"3工程勘察与调查PAGEREF_Toc298510737\h14HYPERLINK\l"_Toc298510738"3.1一般规定PAGEREF_Toc298510738\h14HYPERLINK\l"_Toc298510739"3.2环境地质调查PAGEREF_Toc298510739\h14HYPERLINK\l"_Toc298510740"3.3工程勘察PAGEREF_Toc298510740\h15HYPERLINK\l"_Toc298510741"4预应力锚杆PAGEREF_Toc298510741\h17HYPERLINK\l"_Toc298510742"4.1一般规定PAGEREF_Toc298510742\h17HYPERLINK\l"_Toc298510743"4.2锚杆类型与构造PAGEREF_Toc298510743\h17HYPERLINK\l"_Toc298510744"（Ⅰ）拉力型与压力型预应力锚杆PAGEREF_Toc298510744\h17HYPERLINK\l"_Toc298510745"（Ⅱ）压力分散与拉力分散型锚杆PAGEREF_Toc298510745\h18HYPERLINK\l"_Toc298510746"（Ⅲ）可拆芯式锚杆PAGEREF_Toc298510746\h20HYPERLINK\l"_Toc298510747"（Ⅳ）树脂卷锚杆与快硬水泥卷锚杆PAGEREF_Toc298510747\h20HYPERLINK\l"_Toc298510748"（Ⅴ）涨壳中空注浆锚杆PAGEREF_Toc298510748\h20HYPERLINK\l"_Toc298510749"（Ⅵ）摩擦型锚杆PAGEREF_Toc298510749\h20HYPERLINK\l"_Toc298510750"4.3预应力锚杆类型的选择PAGEREF_Toc298510750\h20HYPERLINK\l"_Toc298510751"4.4材料PAGEREF_Toc298510751\h22HYPERLINK\l"_Toc298510752"4.5防腐保护PAGEREF_Toc298510752\h25HYPERLINK\l"_Toc298510753"4.6设计PAGEREF_Toc298510753\h27HYPERLINK\l"_Toc298510754"（Ⅰ）锚杆设置PAGEREF_Toc298510754\h27HYPERLINK\l"_Toc29851"（Ⅱ）锚杆的安全系数PAGEREF_Toc29851\h27HYPERLINK\l"_Toc298510756"（Ⅲ）锚杆杆体设计PAGEREF_Toc298510756\h28HYPERLINK\l"_Toc298510757"（Ⅳ）注浆体和传力结构PAGEREF_Toc298510757\h31HYPERLINK\l"_Toc298510758"（Ⅴ）初始预应力的确定PAGEREF_Toc298510758\h31HYPERLINK\l"_Toc298510759"4.7施工PAGEREF_Toc298510759\h32HYPERLINK\l"_Toc298510760"（Ⅰ）一般