山东电缆桥架避坑！贯穿孔成火灾“隐形通道”？3步防火实操筑牢防线

　　Shandong cable tray to avoid pitfalls! Penetrating holes into 'invisible channels' for fires? Three step fire prevention practice to build a solid safety defense line

　　在山东工业、建筑、市政等各类工程中，电缆桥架作为线缆敷设的核心载体，应用场景覆盖工厂车间、写字楼、住宅小区等，据山东建筑电气行业协会调研数据显示，2025年山东电缆桥架市场需求量同比增长29%，但同时有83%的工程因电缆桥架贯穿孔防火处理不到位，存在严重隐患。作为深耕网络运营及电气工程领域多年的从业者，发现多数山东企业、施工单位在电缆桥架安装中，往往忽视贯穿孔的防火防烟处理，殊不知这些未密封的贯穿孔，极易成为火灾发生时烟雾和火焰的高速通道，据消防部门统计，建筑火灾中，47%的火势蔓延源于电缆桥架贯穿孔未做规范防火处理，造成的财产损失和人员伤亡触目惊心。本文结合实操经验，拆解山东电缆桥架贯穿孔防火防烟的科学解决方案，用细节破解痛点，为山东工程施工、企业运维提供实用参考，助力筑牢消防防线。

　　In various industrial, construction, municipal and other projects in Shandong, cable trays serve as the core carrier for cable laying, with application scenarios covering factory workshops, office buildings, residential areas, etc. According to research data from the Shandong Building Electrical Industry Association, the demand for cable trays in the Shandong market will increase by 29% year-on-year in 2025. However, at the same time, 83% of projects have serious safety hazards due to inadequate fire prevention treatment for cable tray penetrations. As a practitioner who has been deeply involved in the fields of network operation and electrical engineering for many years, I have found that most Shandong enterprises and construction units often neglect the fire and smoke prevention treatment of through holes in cable tray installation. Little do they know that these unsealed through holes can easily become a high-speed passage for smoke and flames in the event of a fire. According to statistics from the fire department, 47% of building fires spread due to the lack of standardized fire prevention treatment for through holes in cable trays, resulting in shocking property losses and casualties. This article combines practical experience to dismantle the scientific solution for fire and smoke prevention in Shandong cable tray through holes, using professional details to solve safety pain points, providing practical reference for Shandong engineering construction and enterprise operation and maintenance, and helping to strengthen the fire safety defense line.

　　电缆桥架贯穿孔的防火防烟处理，是山东电缆桥架安装运维中的核心环节，也是容易被忽视的短板。很多施工单位为节省工期、降低成本，对贯穿孔仅做简单封堵，甚不做任何处理，一旦发生火灾，高温火焰和有毒烟雾会通过贯穿孔快速蔓延其他区域，加速火势扩大，同时烟雾会阻碍人员疏散，增加救援难度。根据《GB23864-2023防火封堵材料》规范要求，电缆桥架贯穿孔封堵材料的耐火性能需达到相应等级，其中建筑关键区域的封堵需满足少1h的耐火完整性和隔热性要求，而防火块搭配防火密封胶的组合方式，是目前山东市场上适配性强、防火效果靠谱的解决方案，能有效阻断火焰和烟雾蔓延，契合各类工程的防火标准。

　　The fire and smoke prevention treatment of cable tray through holes is the core link in the installation and operation of cable trays in Shandong, and it is also a safety shortcoming that is easily overlooked. Many construction units, in order to save time and reduce costs, only perform simple sealing on through holes, or even do not do any treatment. Once a fire occurs, high-temperature flames and toxic smoke will quickly spread to other areas through the through holes, accelerating the spread of the fire. At the same time, smoke will hinder personnel evacuation and increase the difficulty of rescue. According to the requirements of the "GB23864-2023 Fireproof Sealing Materials" specification, the fire resistance performance of the sealing materials for cable tray through holes needs to reach the corresponding level. The sealing of key areas in buildings needs to meet the requirements of fire integrity and insulation for at least 1 hour. The combination of fireproof blocks and fireproof sealant is currently a highly adaptable and reliable solution in the Shandong market, which can effectively block the spread of flames and smoke and meet the fire prevention standards of various projects.

　　山东电缆桥架贯穿孔防火防烟实操，核心分为三步，流程清晰、落地性强，施工人员可直接参照执行，无需复杂设备，既能保证防火效果，又能兼顾后期运维便捷性。步，彻底清缝，这是防火封堵的基础，也是避免后期漏缝的关键。施工前需将电缆桥架表面及贯穿孔内壁的浮灰、碎渣、油污等彻底清理干净，确保封堵面干燥、平整，只有底子清理到位，才能让防火材料与桥架、墙体紧密贴合，形成无缝封堵，杜绝火焰和烟雾从缝隙渗透，这一步也是很多施工单位容易敷衍，进而导致防火失效的核心环节。

　　The practical operation of fire and smoke prevention through Shandong cable tray penetrations is divided into three steps, with clear processes and strong practicality. Construction personnel can directly refer to and execute it without the need for complex professional equipment, which can ensure the fire prevention effect and also take into account the convenience of later operation and maintenance. The first step is to thoroughly clean the seams, which is the foundation of fireproof sealing and the key to avoiding later leaks. Before construction, it is necessary to thoroughly clean the floating ash, debris, oil stains, etc. on the surface of the cable tray and the inner wall of the through hole to ensure that the sealing surface is dry and flat. Only when the bottom is cleaned properly can the fireproof material be tightly adhered to the tray and wall, forming a seamless sealing and preventing flames and smoke from penetrating through the gaps. This step is also the core link that many construction units are prone to perfunctory, leading to fire failure.

　　第二步，精准安装防火块，筑牢防火核心防线。所选用的防火块为双组分高分子聚合物材质，属于急用型膨胀型防火发泡块，具备良好的适配性和膨胀性，火灾发生时能快速膨胀，进一步填充缝隙，阻断火势蔓延。施工时需根据山东电缆桥架的宽度、贯穿孔的缝隙大小，用美工刀将防火块裁剪成对应形状，裁剪后直接塞入贯穿孔，用手轻轻按压，确保防火块填满贯穿孔的每个角落，凭借其自身的适配性能牢牢卡紧，无需额外固定，既节省施工时间，又能保证封堵的牢固性。

　　The second step is to accurately install fireproof blocks and build a solid fire core defense line. The selected fireproof block is made of two-component polymer material, which belongs to the urgent expansion type fireproof foam block. It has good adaptability and expansibility, and can quickly expand when a fire occurs, further filling gaps and blocking the spread of fire. During construction, it is necessary to use a craft knife to cut the fireproof blocks into corresponding shapes according to the width of the Shandong cable tray and the size of the gaps in the through holes. After cutting, they should be directly inserted into the through holes and gently pressed by hand to ensure that the fireproof blocks fill every corner of the through holes. With their own adaptability, they can be firmly clamped without additional fixation, saving construction time and ensuring the firmness of the sealing.

　　第三步，封胶收尾，查漏补缺杜绝隐患。防火块安装完成后，需用防火密封胶对缝隙进行二次封堵，填充防火块与电缆桥架内壁、线缆之间的细小缝隙，将密封胶均匀挤入缝隙，覆盖缝隙表面，形成完整的防火密封层。值得注意的是，考虑到后期线缆维护和新增需求，该方案无需彻底封堵贯穿孔，后续若需添加电缆，只需按照电缆尺寸在防火块上钻孔，放入电缆后，再用防火密封胶涂密实即可，兼顾性与运维便捷性，适配山东各类工程的长期使用需求。

　　The third step is to seal the adhesive and eliminate safety hazards by identifying and filling any gaps. After the installation of the fireproof block is completed, it is necessary to use fireproof sealant to seal the gaps for the second time, focusing on filling the small gaps between the fireproof block and the inner wall of the cable tray and the cables. The sealant should be evenly squeezed into the gaps to cover the surface of the gaps and form a complete fireproof sealing layer. It is worth noting that, considering the later cable maintenance and new requirements, this solution does not need to completely seal the through holes. If cables need to be added in the future, they only need to be drilled on the fireproof block according to the cable size, placed in the cable, and then coated tightly with fireproof sealant. It balances safety and maintenance convenience, and is suitable for the long-term use needs of various projects in Shandong.

　　当前，山东地区对电缆桥架防火的要求日益严格，尤其是工业厂房、高层建筑等人员密集、设备集中的区域，贯穿孔防火处理已成为工程验收的必查项目。据统计，采用防火块+防火密封胶规范处理的电缆桥架贯穿孔，防火防烟合格率达99%，能有效延缓火势蔓延时间，为人员疏散和救援争取宝贵时间，相较于传统封堵方式，防火效果提升60%以上，已成为山东电缆桥架防火处理的主流选择。

　　At present, the requirements for fire safety of cable trays in Shandong region are becoming increasingly strict, especially in densely populated areas such as industrial plants and high-rise buildings where equipment is concentrated. Through hole fire prevention treatment has become a necessary inspection item for engineering acceptance. According to statistics, the cable tray through holes treated with fireproof blocks and fireproof sealant specifications have a fire and smoke prevention qualification rate of 99%, which can effectively delay the spread of fire and save valuable time for personnel evacuation and rescue. Compared with traditional sealing methods, the fire prevention effect is improved by more than 60%, and it has become the mainstream choice for fire prevention treatment of cable trays in Shandong.

　　对山东施工单位、企业而言，电缆桥架的运维，不仅要注重桥架本身的质量，更要重视贯穿孔这一“隐形隐患”。忽视贯穿孔防火处理，看似节省了短期成本，实则埋下重大隐患，一旦发生火灾，后果不堪设想。遵循“清缝—装防火块—封胶”的三步实操方法，选用符合规范的防火材料，既能满足《GB23864-2023防火封堵材料》的相关要求，又能筑牢消防防线。

　　For construction units and enterprises in Shandong, the safe operation and maintenance of cable trays should not only focus on the quality of the trays themselves, but also pay attention to the hidden safety hazard of through holes. Neglecting the fire prevention treatment of through holes may seem to save short-term costs, but in reality, it poses significant safety hazards. Once a fire occurs, the consequences are unimaginable. Following the three-step practical method of "cleaning seams, installing fireproof blocks, and sealing glue", selecting fireproof materials that meet the specifications can not only meet the relevant requirements of GB23864-2023 Fireproof Sealing Materials, but also build a strong fire safety defense line.

　　山东电缆桥架的规范安装与运维，是工程的重要保障，贯穿孔防火防烟处理看似是细节，却直接决定着消防等级。作为资深从业者，提醒山东各施工单位、企业，摒弃侥幸心理，重视贯穿孔防火处理，严格按照实操步骤规范施工，才能从源头杜绝火灾隐患。若对防火块裁剪尺寸、密封胶涂抹厚度等细节有疑问，可留言咨询，获取专属实操指导，助力山东工程领域筑牢电缆桥架防火防线。

　　The standardized installation and operation of cable trays in Shandong are important guarantees for engineering safety. The fire and smoke prevention treatment of through holes may seem like details, but it directly determines the fire safety level. As a senior practitioner, I remind all construction units and enterprises in Shandong to abandon the mentality of luck, attach importance to fire prevention treatment of through holes, and strictly follow the practical steps to standardize construction, in order to eliminate fire hazards from the source. If you have any questions about the cutting size of fireproof blocks, the thickness of sealant application, and other details, please leave a message for consultation to obtain exclusive practical guidance and help Shandong's engineering field build a solid fire safety defense line for cable trays.

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