The fire prevention methods of the thermal insulation layer of the tunnel concrete structure mainly include spraying fire-proof coating and laying fire-proof board. Due to the deformation and leakage of tunnel structure and other factors, the fire-proof coating is easy to crack and the material performance is reduced, which not only affects the fire-proof effect, but also affects the service life; while the scheme of laying the fire-proof plate, although it adapts to certain deformation requirements, its joints and metal fasteners transfer part of the heat to the structure surface, causing damage to the surface layer structure, inconvenient construction and subsequent maintenance.

　　隧道復(fù)合防火設(shè)計是一種系統(tǒng)水下隧道混凝土結(jié)構(gòu)防火措施,有特殊吊掛金屬龍骨靈活的方式,有效吸收由于管道的擴張,結(jié)算、變形和其他有害因素,因此附加火結(jié)構(gòu)不會被破壞;同時，具有優(yōu)異的沖擊強度和抗斷裂能力的面板能有效吸收高速車輛進出時的正、負(fù)壓沖擊波。

　　Tunnel composite fire protection design is a fire protection measure for underwater tunnel concrete structure. It has a special flexible way of hanging metal keel, which can effectively absorb expansion, settlement, deformation and other harmful factors of the pipeline, so the additional fire structure will not be damaged; At the same time, the panel with excellent impact strength and fracture resistance can effectively absorb the positive and negative pressure shock wave when high-speed vehicles enter and leave.

　　防火材料有牛仔藍(lán)防火板做哈密瓜防火板多種類型，防火板，內(nèi)襯防火混凝土，添加防火纖維防火灰紙防火板尺寸結(jié)構(gòu)混凝土保護層，防火涂料等。

　　There are many types of fire-proof materials, such as cowboy blue fire-proof board, Hami melon fire-proof board, fire-proof board, lining fire-proof concrete, adding fire-proof fiber fire-proof ash paper fire-proof board size structure concrete protective layer, fire-proof coating, etc.

　　防火板硅酸鹽防火板的主要成分一般是特級水泥、硅酸鹽、珍珠鹽和石英砂。板材厚度與防火性能成正比，施工方便。例如，荷蘭Vlake隧道、寧波長虹隧道、上海外環(huán)隧道、南京玄武湖隧道采用比利時安防公司生產(chǎn)的Promat隧道防火板系列。

　　The main components of silicate fire-proof board are super grade cement, silicate, pearl salt and quartz sand. The thickness of the board is directly proportional to the fire performance, and the construction is convenient. For example, the Dutch vlake tunnel, Ningbo Changhong tunnel, Shanghai outer ring tunnel and Nanjing Xuanwu Lake Tunnel adopt the ProMat tunnel fire-proof board series produced by Belgium security company.

　　隧道復(fù)合防火系統(tǒng)的性能特點不同于傳統(tǒng)的防火措施。隧道復(fù)合防火系統(tǒng)具有以下特點。

　　The performance of the tunnel composite fire protection system is different from the traditional fire protection measures. The tunnel composite fire protection system has the following characteristics.

　　在防火性能方面，結(jié)構(gòu)背溫在200咖啡橡木防火板℃范圍內(nèi)，因此采用粉煤灰防火板可以有效地保護混凝土層，解決混凝土耐火石墨防火板爆破黑核桃防火板裂縫的問題。容易導(dǎo)熱的部分整個防火成員和管之間,掛片,只占總數(shù)的4.55%的管道區(qū)域塊(每個掛片之間的接觸面積和管道塊只是管部分,其余部分是巖棉與極低的導(dǎo)熱系數(shù);相對較少的延長螺釘?shù)氖褂?，這意味著有較低的可能性直接傳熱到鋼管鋼和相對改善的安全性。

　　In terms of fire performance, the back temperature of the structure is within the range of 200 ℃ of coffee oak fire-proof board, so the use of fly ash fire-proof board can effectively protect the concrete layer and solve the problem of cracks in the black walnut fire-proof board caused by the explosion of concrete fire-resistant graphite fire-proof board. The part easy to conduct heat is only 4.55% of the total pipe area block (the contact area between each hanging piece and the pipe block is only the pipe part, and the rest part is rock wool and extremely low thermal conductivity; relatively less use of extension screws means that there is a low possibility of direct heat transfer to the steel pipe and relatively improved safety).

　　在結(jié)構(gòu)方面,通過剛性和柔性材料,防火結(jié)構(gòu)并不容易被吊掛金屬龍骨的靈活的方式,可以有效地吸收由于管道的擴張和收縮,結(jié)算、變形和其他有害因素,所以附加火結(jié)構(gòu)不會被破壞;表面板具有優(yōu)異的沖擊強度和抗斷裂能力，能有效吸收高速車輛進出時的正負(fù)壓沖擊波。面板接縫處填充無機耐℃膠，使整個防火構(gòu)件無任何薄弱環(huán)節(jié)。在現(xiàn)有的基礎(chǔ)上，易于提高隧道的火災(zāi)等級。

　　In terms of structure, through rigid and flexible materials, the fire-proof structure is not easy to be hanged with metal keel in a flexible way, which can effectively absorb expansion and contraction of pipes, settlement, deformation and other harmful factors, so the additional fire structure will not be damaged; The surface plate has excellent impact strength and fracture resistance, and can effectively absorb the positive and negative pressure shock wave when high-speed vehicles enter and leave. The joints of the panel are filled with inorganic temperature resistant adhesive, so that the whole fire-proof component has no weak links. On the existing basis, it is easy to improve the fire level of the tunnel.

　　在其他用途上，只使用了2.5個鉗子，這意味著可以減少對隧道內(nèi)壁的破壞。表盤由無機材料組成，防水不會發(fā)霉，防火性能不會受潮或發(fā)霉的材料;易于裝配和后續(xù)維護;整個防火板的安裝高度可調(diào)的防火板黃金洞,和其他輔助網(wǎng)絡(luò)編織銀防火板設(shè)施等各種管道和伸縮縫在隧道的保護范圍應(yīng)當(dāng)包括隧道的防火保護系統(tǒng)與羊毛防火板,以便節(jié)省這部分的消防費用。此外，其懸掛能力強，可安裝在隧道內(nèi)的各種附屬設(shè)施的防火層上，不影響現(xiàn)有的消防效率。

　　In other applications, only 2.5 pliers are used, which means that the damage to the inner wall of the tunnel can be reduced. The dial is made of inorganic materials, which are waterproof and mildew free, and whose fireproof performance is not affected by damp or mildew; it is easy to assemble and maintain; the installation height of the whole fireproof board is adjustable, and the protection scope of various pipes and expansion joints in the tunnel, such as the golden hole of the fireproof board, and other auxiliary network woven silver fireproof board facilities, shall include the fire protection system and wool fireproof board of the tunnel, In order to save this part of the fire costs. In addition, it has strong hanging capacity and can be installed on the fireproof layer of various auxiliary facilities in the tunnel without affecting the existing fire efficiency.

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