3.4 Types and Arrangement of Anchors
3.4.1 Cylindrical anchors，end plates and hexmesh shall be used as the anchor assembly for double layer heat-insulating and abrasion-resistant lining with hexmesh，and shall comply with the following requirements:
1 The specification of cylindrical anchor shall conform to Figure 3.4.1-1；
2 The specification of end plate shall conform to Figure 3.4.1-2；
3 The arrangement of cylindrical anchors shall conform to Figure 3.4.1-3；
4 The size of hexmesh should be 1200mm×3000mm，the thickness of steel strip should be 1.75mm or 2mm，and the width of steel strip should be 20mm or 25mm；
Figure 3.4.1-1 Cylindrical Anchor
δ2—Thickness of Heat-insulating Layer（mm）
Figure 3.4.1-2 End Plate
5 The typical structural form of hexmesh shall conform to Figure 3.4.1-4.If other structural form is used，it shall be specified in the design documents.
Figure 3.4.1-3 Arrangement of Cylindrical Anchors
Figure 3.4.1-4 Hexmesh
3.4.2 Ω-anchor（Figure 3.4.2）should be used as the anchor for single-layer heat-insulating and abrasion-resistant lining without hexmesh，and dual-layer ring anchor（Figure 3.4.4）may also be used.The arrangement of Ω-anchors shall conform to Figure 3.4.2（b），and the arrangement of dual-layer ring anchors shall conform to Figure 3.4.3-2（b）.
Figure 3.4.2 Ω-Anchor
1—Soft rubber cap；2—Ω-anchor；δ—Thickness of lining（mm）
3.4.3 One or more combinations of anchors shall be selected for single layer abrasion-resistant lining or highly abrasion-resistant lining without hexmesh based on the shape of location where anchors are used，and the specifications and arrangements of anchors shall comply with the following requirements:
1 The specifications and arrangement of Y-anchors shall conform to Figure 3.4.3-1.
2 The specifications and arrangement of ring anchors shall conform to Figure 3.4.3-2.
3 The specifications and arrangement of S-anchors shall conform to Figure 3.4.3-3.
Figure 3.4.3-1 Y-Anchor
Figure 3.4.3-2 Ring Anchor
Figure 3.4.3-3 S-Anchor
4 The specifications and arrangement of V-anchors shall conform to Figure 3.4.3-4.
Figure 3.4.3-4 V-Anchor
3.4.4 Dual-layer ring anchor（Figure 3.4.4）shall be used as anchor for double layer heat-insulating and abrasion-resistant lining without hexmesh and the arrangement of dual-layer ring anchors shall conform to Figure 3.4.3-2（b）.
Figure 3.4.4 Dual-layer Ring Anchor
1—Stud bolt；2—Ring anchor；δ—Total thickness of heat-insulating and abrasion-resistant lining；δ2—Thickness of heat-insulating layer（mm）
3.4.5 Number of anchors required per square meter of lining shall conform to Table 3.4.5.
Table 3.4.5 Number of Anchors Required
Note:The spacing between dual-layer ring anchors is the top center-to-center spacing，and the number of dual-layer ring anchors required is also calculated per the top surface area.