Figures (4)  Tables (4)

    • Figure 1. 

      Generate boundary map.

    • Figure 2. 

      Grid area diagram.

    • Figure 3. 

      Grid plot diagram.

    • Figure 4. 

      Fire risk diagram.

    • Target layer A Criterion layer B Indicator layer C
      Fire risk warning
      analysis      		 Value index B1 Number of cultural Antiques C11 Cultural Antiques value C12
      Probability of fire occurrence B2 Building materials C21 Fire resistance rating C22 Building age C23
      Wire distribution C24 Natural and coal gas C25 Temperature C26
      Fire spread speed B3 Building materials C31 Building layers C32 Flame retardant level C33
      Degree of building openness C34 Quantity of cotton and linen
      yarn C35      		 Plant density C36
      Wind C37
      Rescue speed index B4 Number of firefighters C41 Emergency equipment C42 Water system distance C43
      Fire accessibility C44 Road traffic density C45
      Fire perception ability B5 Number of fire detectors C51 Number of fire alarms C52
      Evacuation speed index B6 Building area C61 Tourist density C62 Road accessibility C63
      Number of staff C64 Building height C65 Number of road exits C66

      Table 1. 

      Hierarchy model.

    • A B1 B2 B3 B4 B5 B6
      B1 1 1/2 2 2 1/2 2
      B2 2 1 2 3 2 3
      B3 1/2 1/2 1 2 1/3 2
      B4 1/2 1/3 1/2 1 1/2 1/2
      B5 2 1/2 3 2 1 2
      B6 1/3 1/3 2 2 1/2 1

      Table 2. 

      Criterion layer's judgment matrix about A.

    • Target layer Criterion layer Indicator layer
      Fire risk warning analysis Value index 0.16 Number of cultural antiques 0.5 Cultural antiques value 0.5
      Probability of fire occurrence 0.30 Building materials 0.1164 Fire resistance rating 0.1352 Building age 0.0541
      Wwire distribution 0.2822 Natural and coal gas 0.3337 Temperature 0.0784
      Fire spread
      speed 0.12      		 Building materials 0.0581 Building layers 0.0441 Flame retardant level 0.1002
      Degree of building openness
      0.0923      		 Quantity of cotton and linen
      yarn 0.2843      		 Plant density 0.2843
      Wind 0.1367
      Rescue speed
      index 0.09      		 Number of firefighters 0.1831 Emergency equipment 0.0895 Water system distance 0.1594
      Fire accessibility 0.3264 Road traffic density 0.2416
      Fire perception ability 0.21 Number of fire detectors 0.5 Number of fire alarms 0.5
      Evacuation speed index 0.12 Building area 0.0851 Tourist density 0.2941 Road accessibility 0.1518
      Number of staff 0.1419 Building height 0.1125 Number of road exits 0.2146

      Table 3. 

      Weights of various indicators.

    • Hazard levels Low Medium Higher High
      Distribution (0, 40%] (40%, 60%] (60%, 80%] (80%, 100%]
      Colour Green Blue Pink Red

      Table 4. 

      Risk interval table.