深圳前海中建大口径桩基项目实测：旋挖搭配中科振宇潜孔锤，每小时入岩 6-8 米

深圳前海中建在建桩基项目桩径 1 米，岩层硬度高，传统施工方式工期紧张。项目选用旋挖钻机搭配中科振宇潜孔锤成套改装方案，现场稳定入岩速度可达每小时 6~8 米，大幅压缩工期，为总包方创造了可观的时间效益与施工成本优势，保障项目平稳推进。

日前，由中建集团承建的深圳前海重点桩基工程进入全面施工阶段。本项目桩基孔径达 1 米，施工区域深部以高强度硬质花岗岩为主，地质硬度大，入岩难度高，是本工程施工的主要难点。
项目前期采用传统旋挖筒钻研磨工艺施工，针对高硬度岩层钻进速度慢、耗材损耗大、施工周期长，难以匹配项目紧凑的工期节点要求。经过现场工艺对比、设备稳定性测试及综合成本评估，项目部最终确定采用旋挖钻机改装中科振宇潜孔锤成套入岩方案开展施工。
设备进场投入作业以来，整套系统运行稳定、故障率低，适配前海高强度硬岩复杂地层。现场实测稳定入岩速度可达每小时 6 至 8 米，相比传统研磨式施工，整体成孔效率实现倍数级提升。
高效、稳定的施工进度，有效保障了项目整体施工节点，避免工期滞后风险。同时大幅减少设备台班投入、人工成本、燃油消耗及耗材更换频次，显著降低项目综合施工成本，为甲方及总包单位创造了良好的进度价值与经济效益。
中科振宇旋挖潜孔锤成套改装系统采用独立气动回路设计，不改动钻机液压结构，全面保护旋挖主机。全套高压管路、专用内出气钻杆、原厂冲击器成套匹配，针对大口径、高硬度岩层工况深度优化，连续作业稳定性强，适配重点基建工程高强度施工需求。
依托成熟的双平台改装技术与大量央企工程落地经验，中科振宇潜孔锤已广泛应用于机场、高速、跨海大桥、水电站、沿海桩基等国家级重点项目，以真实工地实测数据、稳定的设备性能、完善的配套服务，持续为各类硬岩桩基工程降本、提速、提质。
在未来的工程应用中，中科振宇将持续深耕硬岩入岩技术优化，持续输出成熟、高效、稳定的桩基施工成套解决方案，助力各大基建项目高效、高质量落地。

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Field Test of Large-Diameter Pile Project in Qianhai, Shenzhen: Rotary Drilling Rig Equipped with Zhongke Zhenyu DTH Hammer Achieves 6-8 Meters Rock Penetration per Hour
Abstract
The pile diameter of the China State Construction pile foundation project in Qianhai, Shenzhen is 1 meter with extremely hard rock formations. Facing tight construction schedules with conventional methods, the project adopted the complete modification solution of Zhongke Zhenyu DTH hammer matched with rotary drilling rigs. The stable rock penetration speed reaches 6~8 meters per hour, greatly shortening the construction period, reducing comprehensive costs, and delivering prominent schedule and economic benefits for the general contractor.
Recently, the key pile foundation project in Qianhai, Shenzhen undertaken by China State Construction Engineering Corporation (CSCEC) has entered full-scale construction. The project adopts a large pile diameter of 1 meter. The deep stratum of the construction site is dominated by high-strength hard granite, featuring high rock hardness and difficult rock penetration conditions.
In the early stage of construction, the traditional rotary barrel drilling method was applied. The conventional grinding drilling process shows low penetration efficiency, high wear of consumables and long construction cycle, which cannot meet the tight schedule requirements of the key project.
After on-site process comparison, equipment stability testing and comprehensive cost evaluation, the project team officially adopted the Zhongke Zhenyu DTH hammer complete rock penetration modification solution for rotary drilling rigs.
Since the equipment was put into operation, the complete system has operated stably with low failure rate, perfectly adapting to the high-hardness complex rock stratum in Qianhai. The actual measured rock penetration efficiency reaches 6 to 8 meters per hour. Compared with traditional grinding construction technology, the overall hole-forming efficiency has been greatly improved.
The efficient and stable construction progress effectively guarantees the overall project schedule and avoids the risk of construction delay. Meanwhile, it significantly reduces equipment shift costs, labor costs, fuel consumption and consumable replacement frequency, lowering the comprehensive construction cost and creating remarkable schedule advantages and economic benefits for the project owner and general contractor.
The complete Zhongke Zhenyu DTH hammer modification system adopts an independent pneumatic circuit without changing the rig’s original hydraulic system. Equipped with standard pressure stabilizing non-return valves, it effectively prevents high-pressure air backflow and fully protects the rotary drilling main unit. The complete set of high-pressure pipelines, special internal air drill rods and original factory DTH hammers are fully matched and optimized for large-diameter and high-hardness rock working conditions, ensuring outstanding stability for long-term continuous construction in key infrastructure projects.
Relying on mature dual-platform modification technology and abundant central state-owned enterprise project experience, Zhongke Zhenyu DTH hammers have been widely applied in national key infrastructure projects including airports, expressways, sea-crossing bridges, hydropower stations and coastal pile foundation projects. With real on-site construction data, stable equipment performance and complete supporting services, the company continuously helps hard rock pile foundation projects improve efficiency, reduce costs and ensure construction quality.
In future engineering applications, Zhongke Zhenyu will continue to optimize hard rock penetration technology and provide mature, efficient and reliable complete pile foundation construction solutions to support high-quality and high-efficiency construction of major infrastructure projects.