中交码头项目施工案例：旋挖改装振宇 800 潜孔锤，硬岩成孔效率大幅提升

中交码头桩基工程地质坚硬、入岩难度大，项目设计孔径800mm，钻孔深度20 米。项目初期采用传统旋挖研磨施工，单桩成孔耗时长达20～48 小时，施工进度严重滞后、工期压力巨大。项目引入广东清远中科振宇机械有限公司旋挖改装振宇 800 潜孔锤工艺，现场实测效率提升极其显著，高效保障码头工程节点进度与项目经济效益。

码头桩基工程普遍存在岩层坚硬、连续嵌岩段长、施工难度大等特点。本中交码头施工项目桩基设计孔径800mm，单孔钻孔深度达20 米，下部整体硬质岩层致密坚硬，是制约现场施工进度的核心难点。
项目施工前期，现场仅采用传统旋挖钻机搭配常规钻具研磨式施工。硬岩破碎完全依靠设备自重加压研磨，钻进阻力极大、进尺极其缓慢。单根 20 米桩基完整成孔耗时需 20～48 小时，不仅成孔周期超长，钻齿损耗严重、设备台班损耗大、燃油成本居高不下，完全无法满足码头重点项目的工期节点要求。
为彻底破解硬岩施工效率低、工期拖滞的行业难题，项目部经过多方案比对、现场试钻测试，最终采用广东清远中科振宇机械有限公司旋挖改装振宇 800 潜孔锤成套入岩解决方案。
整套改装系统采用独立气动回路结构，无需改动旋挖钻机原有液压系统，设备适配性强、运行稳定，可有效避免硬岩施工中常见的漏气、卡锤、憋机、高压倒灌等故障，完全适配码头项目高强度、不间断连续施工需求。

现场同工况施工数据对比
表格
施工方式单根 20 米桩基成孔用时施工工况说明
传统旋挖研磨施工 20～48 小时 纯自重研磨破碎硬岩，进尺极慢，钻具损耗极大，频繁提钻清渣、更换钻齿，工期严重滞后
旋挖改装振宇 800 潜孔锤 2.5～3.5 小时 高频冲击破碎硬岩，连续稳定进尺，无需频繁提钻，

从现场实测数据可以清晰看出：搭载振宇 800 潜孔锤改装工艺后，硬岩成孔效率实现数十倍提升，彻底解决了传统旋挖在高硬度岩层施工效率低下、工期不可控的痛点。

高效稳定的入岩速度，大幅压缩单桩施工周期，极大降低设备台班、人工、燃油、钻具更换等综合施工成本，为总包单位抢工期、保节点、降成本提供了可靠的工艺设备支撑，获得了项目部的高度认可。
振宇潜孔锤产自广东清远中科振宇机械有限公司，企业专注旋挖钻机潜孔锤改装技术研发与工地落地应用。针对码头港口、跨海工程、桥梁桩基、高层建筑、高速路基等复杂硬岩桩基施工场景，可提供成熟、稳定、高效率的成套入岩解决方案，依托真实工地实测成效，持续助力全国各大重点基建工程提质增效。
企业将持续深耕硬岩桩基施工技术优化迭代，持续输出高适配、高稳定、高效率的旋挖潜孔锤改装工艺，为各类基建项目高质量、高效率施工保驾护航。
Construction Case of CCCC Wharf Project：Rotary Drilling Modified Zhenyu 800 DTH Hammer Greatly Improves Hard Rock Drilling Efficiency
Abstract
The CCCC wharf pile foundation project has extremely hard rock formations with a pile diameter of 800mm and a drilling depth of 20 meters. In the early stage, the traditional rotary grinding method required 20 to 48 hours for a single pile, resulting in serious schedule delays. After adopting the Zhenyu 800 DTH Hammer modification solution from Guangdong Qingyuan Zhongke Zhenyu Machinery Co., Ltd., the construction efficiency increased exponentially, effectively ensuring the project progress and economic benefits.
The wharf pile foundation project features dense and hard rock layers. With a pile diameter of 800mm and a drilling depth of 20 meters, traditional rotary drilling relies entirely on weight grinding to break rock. The construction speed is extremely slow, and a single pile takes 20 to 48 hours, causing huge pressure on the project schedule.
After multiple on-site tests and technical comparisons, the project adopted the professional rotary drilling DTH hammer modification system developed by Guangdong Qingyuan Zhongke Zhenyu Machinery Co., Ltd.
The modified system adopts an independent pneumatic circuit without changing the original hydraulic structure of the rotary drilling rig. It operates stably, effectively avoiding common problems such as air leakage, hammer jamming and air backflow, and fully meets the high-intensity continuous construction requirements of wharf projects.
On-site Construction Data Comparison
表格
Construction Method Time for 20m Pile Drilling Construction Performance
Traditional Rotary Grinding 20～48 hours Slow weight grinding, severe drill tooth loss, frequent slag cleaning and tool replacement, serious schedule delay
Rotary Drilling + Zhenyu 800 DTH Hammer 2.5～3.5 hours High-frequency percussion rock breaking, continuous stable drilling, low failure rate and low consumable loss
Field data shows that the Zhenyu 800 DTH Hammer has increased hard rock drilling efficiency by dozens of times, completely solving the long-standing problem of low efficiency in hard rock rotary drilling construction.
The greatly shortened construction cycle significantly reduces machine shift costs, fuel consumption, labor costs and consumable losses, effectively guarantees project nodes, and creates prominent economic benefits for the construction unit.
Zhenyu DTH Hammer is manufactured by Guangdong Qingyuan Zhongke Zhenyu Machinery Co., Ltd. The company specializes in rotary drilling rig DTH hammer retrofitting and hard rock pile foundation solutions. Its products and technologies are widely applied in wharves, ports, cross-sea projects, bridges, expressways and key infrastructure projects nationwide.
The company will continue to optimize hard rock drilling technology and provide more stable and efficient construction solutions for major infrastructure projects.