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直埋光缆敷设有哪些步骤？

直埋光缆敷设有哪些步骤？

浏览：42次 | 提问时间： 08-06 10:12

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烟花灭`泪断肠 08-06 10:13

直埋光缆敷设步骤1.复测 (1)核对光缆路由走向、敷设方式及接头位置。 (2)复测路由地面距离，为光缆配盘、分配及敷设提供必需的*。 2.光缆留长预留光缆尽量盘留在通信管道的人(手)孔内，基站留长按15米预留，冗余留长按15‰。预留，接头留长按10米／侧预留。为方便维护，放缆时应以接头井为1#，安顺序类推，逢5、10、15……5的倍数手孔，应安20m作预留。 3.光缆检验 (1)施工单位在开工前应对运到工地的光缆、器材的规格、程式进行数量清点和外观检查，如发现异常应重点检查。对光缆、连接器等还应进行光学特性、电特性的测试。 (2)核对单盘光缆规格、程式及*长度应符合订货合同规定的要求。 (3)光缆开头检验时，应核对光缆外端的端别，并在缆盘上做醒目标注。光缆端别的识别方法应符合下列规定：面对光缆截面，由领示色光纤按／顺时针排列时为A端，反之为B端。 (4)光缆现场检验光纤衰减常数、光纤长度。 (5)单盘光缆检验完毕后应恢复光缆端头密封包装及光缆盘包装。 (6)光纤连接器应具有良好的重复性和互换性。尾纤的长度应符合设计要求、外皮无损伤。尾纤各项参数应符合合同规定。连接器的损耗应符合合同规定。 4.光缆敷设 (1)新建管道内光缆均采用硬塑料管保护，塑料管一次布放的长度以方便光缆穿放为原则。 (2)光缆弯曲半径应不小于光缆外径的10倍，施工过程中不小于20倍。 (3)布放光缆的牵引力应不超过光缆允许的张力80％，瞬时最大牵引力不得超过光缆允许张力的100％，牵引力应加在光缆的加强件(芯)上。光缆布放过程中应无扭转，严禁打小圈、浪涌等现象发生。 (4)布放光缆必须严密组织并有专人指挥，牵引过程中应有良好联络手段。光缆布放完毕，应检查光纤是否良好。光缆端头应做密封防潮处理，不得浸水。 (5)光缆穿入管道或管道拐弯或有交*时，应采用导引装置或喇叭保护管，不得损伤光缆外护层，光缆一次牵引长度一般不应大于1000米，超长时应采用∞字分段牵引。 (6)光缆放置在规定的托架上，并应留适当余量，避免光缆绷的太紧。接头所在人(手)孔内的光缆预留后应符合设计要求。预留光缆应按规定的位置妥善放置。 (7)架空光缆的预留在接头杆处预留,其两侧电杆作适当预留，预留长度15--20m；过河架空光缆，河宽大于30m的河流*各余留15—20m，架空段每10个杆档光缆余留15-20m。过河光缆余留在河岸的第一根杆子的邻杆上：接头余留应在接头杆上，各个接头点余留10m。 5.光缆的保护 (1)人(手)孔内的光缆采用蛇型软管(或塑料软管)保护，并绑在电缆托架上。 (2)所选用的管孔必须清洁、干净。 6.站内光缆 (1)站内光缆应做标志，以便识别。光缆在站内应选择安全位置，当处于易受外界损伤位置时，应采用保护措施。 (2)光缆路由经走线架，拐弯点时应绑扎。上下走道或爬墙的绑扎部位，应垫以胶管，避免光缆受损伤。 (3)站内光缆成端后，必须在ODF箱前面板粘贴配纤示意图。 7.光缆的接续及安装 (1)光缆接续内容包括：光缆接续，护层和力口强芯的连接，接头损耗的测量，接头盒的封装以及接头保护的安装。 (2) 光缆接续前应核对光缆程式和接头位置并根据接头预留长度的要求留足光缆。 (3)按光缆端别核对光纤并编号作永久性标志。 (4) 光纤接续环境必须整洁，应在工作车内或有遮盖物的环境中*作，严禁露天作业。 (5) 光纤接续应连续作业，以确保接续质量。采取措施，不得让光缆受潮。

他渐渐忘了我 08-06 10:21

直埋光缆敷设步骤：(1)光缆沟的开挖及要求：光缆直埋敷设时，可能会受到诸多因素的影响，如耕地、排水沟和其他地面设施、鼠害、冻土层深度等。因此，直埋光缆一般要比管道光缆埋得深。只有达到足够的深度以后，才能防止各种外来的机械损伤。此外，在达到一定深度后地温较稳定，减少了温度变化对光缆性能和光纤传输特性的影响，减小了鼠害，从而保证了光缆线路的安全性和通信传输质量。(2)光缆沟的深度应符合设计要求。原邮电部规定：一般情况下光缆沟的深度为1.2m，上宽为60cm，底为30cm。当同沟敷设两条或两条以上的光缆时，每增加一条光缆，沟宽增加10cm。(3)光缆沟的沟底应平整、无坎。在石质、半石质沟底应垫10cm细土或砂土，以免伤害光缆。(4)光缆沟应平直，与中心线的偏移不得超过10cm，拐弯处的光缆沟，应符合光缆最小曲率半径的规定。

事如初枕你臂弯 08-06 10:29

你好，这些电缆可以直埋：挖出直埋电缆用的沟，一般深400-600mm，在沟底铺砂子，电缆敷设在砂子上，电缆上用砖覆盖，然后回填土复原。但是17根电缆太多，建议你采用混凝土排管。就想我们平时使用的混凝土楼面板，中间有很多孔，将混凝土板埋入地下，电缆传在孔中，混凝土板保护电缆

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