山東電纜橋架避坑！貫穿孔成火災(zāi)“隱形通道”？3步防火實操筑牢安全防線

　　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

　　在山東工業(yè)、建筑、市政等各類工程中，電纜橋架作為線纜敷設(shè)的核心載體，應(yīng)用場景覆蓋工廠車間、寫字樓、住宅小區(qū)等，據(jù)山東建筑電氣行業(yè)協(xié)會調(diào)研數(shù)據(jù)顯示，2025年山東電纜橋架市場需求量同比增長29%，但同時有83%的工程因電纜橋架貫穿孔防火處理不到位，存在嚴重安全隱患。作為深耕網(wǎng)絡(luò)運營及電氣工程領(lǐng)域多年的從業(yè)者，發(fā)現(xiàn)多數(shù)山東企業(yè)、施工單位在電纜橋架安裝中，往往忽視貫穿孔的防火防煙處理，殊不知這些未密封的貫穿孔，出彩易成為火災(zāi)發(fā)生時煙霧和火焰的高速通道，據(jù)消防部門統(tǒng)計，建筑火災(zāi)中，47%的火勢蔓延源于電纜橋架貫穿孔未做規(guī)范防火處理，造成的財產(chǎn)損失和人員傷亡觸目驚心。本文結(jié)合實操經(jīng)驗，拆解山東電纜橋架貫穿孔防火防煙的科學(xué)解決方案，用專業(yè)細節(jié)破解安全痛點，為山東工程施工、企業(yè)運維提供實用參考，助力筑牢消防安全防線。

　　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.

　　電纜橋架貫穿孔的防火防煙處理，是山東電纜橋架安裝運維中的核心環(huán)節(jié)，也是容易被忽視的安全短板。很多施工單位為節(jié)省工期、降低成本，對貫穿孔僅做簡單封堵，甚至不做明顯處理，一旦發(fā)生火災(zāi)，高溫火焰和有毒煙霧會通過貫穿孔快速蔓延至其他區(qū)域，加速火勢擴大，同時煙霧會阻礙人員疏散，增加救援難度。根據(jù)《GB23864-2023防火封堵材料》規(guī)范要求，電纜橋架貫穿孔封堵材料的耐火性能需達到相應(yīng)等級，其中建筑關(guān)鍵區(qū)域的封堵需滿足至少1h的耐火完整性和隔熱性要求，而防火塊搭配防火密封膠的組合方式，是目前山東市場上適配性強、防火效果靠譜的解決方案，能有效阻斷火焰和煙霧蔓延，契合各類工程的防火標準。

　　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.

　　山東電纜橋架貫穿孔防火防煙實操，核心分為三步，流程清晰、落地性強，施工人員可直接參照執(zhí)行，無需復(fù)雜專業(yè)設(shè)備，既能保證防火效果，又能兼顧后期運維便捷性。第一步，有效清縫，這是防火封堵的基礎(chǔ)，也是避免后期漏縫的關(guān)鍵。施工前需將電纜橋架表面及貫穿孔內(nèi)壁的浮灰、碎渣、油污等有效清理干凈，確保封堵面干燥、平整，只有底子清理到位，才能讓防火材料與橋架、墻體緊密貼合，形成無縫封堵，杜絕火焰和煙霧從縫隙滲透，這一步也是很多施工單位容易敷衍，進而導(dǎo)致防火失效的核心環(huán)節(jié)。

　　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，合理安裝防火塊，筑牢防火核心防線。所選用的防火塊為雙組分高分子聚合物材質(zhì)，屬于急用型膨脹型防火發(fā)泡塊，具備良好的適配性和膨脹性，火災(zāi)發(fā)生時能快速膨脹，進一步填充縫隙，阻斷火勢蔓延。施工時需根據(jù)山東電纜橋架的寬度、貫穿孔的縫隙大小，用美工刀將防火塊裁剪成對應(yīng)形狀，裁剪后直接塞入貫穿孔，用手輕輕按壓，確保防火塊填滿貫穿孔的每個角落，憑借其自身的適配性能牢牢卡緊，無需額外固定，既節(jié)省施工時間，又能保證封堵的牢固性。

　　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，封膠收尾，查漏補缺杜絕安全隱患。防火塊安裝完成后，需用防火密封膠對縫隙進行二次封堵，核心填充防火塊與電纜橋架內(nèi)壁、線纜之間的細小縫隙，將密封膠均勻擠入縫隙，覆蓋縫隙表面，形成完整的防火密封層。值得注意的是，考慮到后期線纜維護和新增需求，該方案無需有效封堵貫穿孔，后續(xù)若需添加電纜，只需按照電纜尺寸在防火塊上鉆孔，放入電纜后，再用防火密封膠涂密實即可，兼顧安全性與運維便捷性，適配山東各類工程的長期使用需求。

　　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.

　　當前，山東地區(qū)對電纜橋架防火安全的要求日益嚴格，尤其是工業(yè)廠房、高層建筑等人員密集、設(shè)備集中的區(qū)域，貫穿孔防火處理已成為工程驗收的必查項目。據(jù)統(tǒng)計，采用防火塊+防火密封膠規(guī)范處理的電纜橋架貫穿孔，防火防煙合格率達99%，能有效延緩火勢蔓延時間，為人員疏散和救援爭取寶貴時間，相較于傳統(tǒng)封堵方式，防火效果提升60%以上，已成為山東電纜橋架防火處理的主流選擇。

　　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.

　　對山東施工單位、企業(yè)而言，電纜橋架的安全運維，不僅要注重橋架本身的質(zhì)量，更要重視貫穿孔這一“隱形安全隱患”。忽視貫穿孔防火處理，看似節(jié)省了短期成本，實則埋下重大安全隱患，一旦發(fā)生火災(zāi)，后果不堪設(shè)想。遵循“清縫—裝防火塊—封膠”的三步實操方法，選用符合規(guī)范的防火材料，既能滿足《GB23864-2023防火封堵材料》的相關(guān)要求，又能筑牢消防安全防線。

　　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.

　　山東電纜橋架的規(guī)范安裝與運維，是工程安全的重要保障，貫穿孔防火防煙處理看似是細節(jié)，卻直接決定著消防安全等級。作為資深從業(yè)者，提醒山東各施工單位、企業(yè)，摒棄僥幸心理，重視貫穿孔防火處理，嚴格按照實操步驟規(guī)范施工，才能從源頭杜絕火災(zāi)隱患。若對防火塊裁剪尺寸、密封膠涂抹厚度等細節(jié)有疑問，可留言咨詢，獲取專屬實操指導(dǎo)，助力山東工程領(lǐng)域筑牢電纜橋架防火安全防線。

　　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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