湖北三峡疏港铁路建设取得关键进展|国产成人精品无码免费看夜聊软件
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中新网宜昌10月19日电 (张鹏波 温淑娟)由中铁三局承建的三峡疏港铁路杨木岭隧道于19日顺利贯通,这标志着三峡疏港铁路所有隧道全部实现贯通,工程建设取得关键进展。

三峡疏港铁路是湖北省重点交通建设工程,全长39.59公里,全线共有13座隧道、29座桥梁,桥隧比达89%。杨木岭隧道全长3648.3米,最大埋深约429米,隧道穿越3处断层破碎带、5处岩溶发育区等不良地质区段,且隧道上穿既有翻坝高速公路季家坡隧道,两座隧道垂直净距仅16米,施工中必须严格控制机械设备振动,减少对既有高速公路隧道的扰动。
为确保施工安全高效推进,项目部根据隧道围岩情况,运用TSP超前地质预报、地质雷达探测和超前水平钻钻孔等综合物探技术手段精确识别不良地质情况,并采用C20混凝土填充配合帷幕注浆加固施工工艺,对溶洞地质及断裂带进行整治施工。

中铁三局项目部总工程师郝世全介绍,项目团队在上跨翻坝高速施工时,对既有隧道内科学布设激光测距传感器,借助裂缝计、自动测量机器人、振动仪等先进监测设备,实时监测隧道收敛变形、道床沉降情况,科学指导悬臂式掘进机与弱振动破碎锤施工作业,安全实现全隧贯通。
三峡疏港铁路是国内首条具备翻坝转运功能的新型货运铁路。建成通车后,将通过汉宜铁路、雅宜铁路、焦柳铁路辐射鄂西南、江汉平原以及湘北等地区,完善三峡综合交通运输体系,实现水铁联运无缝衔接,大幅降低物流成本,对促进地方社会经济发展具有重大意义。(完)
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