Horizontal Directional Drilling Rig at a Construction Site
Engineering Service
Horizontal Directional Drilling
水平定向钻施工
Horizontal directional drilling services for trenchless pipeline installation using pilot drilling, reaming and pullback, reducing continuous open-cut excavation for road, built-up-area and infrastructure crossings.
采用水平定向钻工法开展地下管线非开挖铺设施工，通过导向钻进、扩孔和管线回拖等工序降低连续开挖需求，适用于道路、建成区及既有设施穿越。
Supplied by Henan Zhongding Bohua Construction Engineering Co., Ltd.
Overview
Service overview
Henan Zhongding Bohua provides horizontal directional drilling (HDD) services for trenchless pipeline installation. The method typically establishes the designed bore path through pilot drilling, enlarges the bore by staged reaming and then installs the pipeline by pullback, enabling underground crossings and pipeline installation with little or no continuous surface excavation.
The company operates HDD rigs of different capacities. Equipment and construction planning can be selected based on pipe diameter, crossing length, ground conditions, entry and exit space, existing underground utilities and traffic constraints. Construction control focuses on bore-path guidance, reaming sequence, bore stability and pullback conditions to support pipeline installation and protection of existing infrastructure.
HDD is applicable to urban roads, existing facilities and other areas where continuous excavation is undesirable. It can support district heating, municipal and other underground pipeline projects while reducing surface disturbance and road excavation.
河南中鼎博华提供水平定向钻（HDD）非开挖施工服务。该工法通常通过导向孔钻进建立设计轨迹，经扩孔形成满足管线回拖要求的孔道，随后完成管线回拖安装，可在不开挖或减少开挖地表的条件下实现地下管线穿越和铺设。
公司配置不同规格水平定向钻设备，可结合管径、穿越长度、地层条件、入土与出土空间、既有地下设施以及现场交通条件进行设备选型和施工组织。施工过程中重点控制钻进轨迹、扩孔级配、孔道稳定及回拖条件，以满足管线安装和既有设施保护要求。
水平定向钻适用于城市道路、既有设施及其他不宜连续开挖区域，可用于供热、市政及其他地下管线建设，并可减少连续地表开挖及其对道路交通和周边场地使用的影响。
Scope
Service scope
Key components that may be provided for relevant engineering scenarios.
- Integrated pilot drilling, staged reaming and pipeline pullback sequence
- Rig selection according to diameter, crossing length and ground conditions
- Bore-path control to meet alignment and existing-infrastructure protection requirements
- Reduced continuous surface excavation and associated traffic/environmental impacts
- Applicable to built-up urban areas and complex crossing conditions
- 导向钻进、分级扩孔与管线回拖形成完整非开挖施工流程
- 不同规格钻机可根据管径、距离及地层条件进行匹配
- 通过轨迹控制满足穿越线路和既有设施保护要求
- 减少连续地表开挖，对道路交通和周边环境影响相对较小
- 适用于城市建成区及复杂穿越环境
Scenarios
Applicable project scenarios
Typical project conditions where this offering may be relevant.
- Trenchless district heating and municipal pipelines
- Crossings beneath urban roads and transport infrastructure
- Construction in built-up or excavation-restricted areas
- Medium- and long-distance underground pipeline installation
- Pipeline works requiring reduced road excavation and surface disturbance
- 供热及市政地下管线非开挖铺设
- 城市道路及既有交通设施穿越
- 建成区或场地开挖受限区域施工
- 中长距离地下管线穿越与铺设
- 需要降低道路开挖和地表扰动的管线工程
Offering Details
Technical Details & Applications
Construction Technology & Equipment
The company operates small, medium and large HDD rigs that can be matched to project scale and crossing conditions.
- HDD equipment includes XZ320D/D10x15, XZ680/DE0x90 and XZ1000+/DDW-3000.
- A typical HDD sequence includes pilot drilling, bore-path guidance, staged reaming and pipeline pullback.
- Equipment selection and construction planning consider diameter, crossing length, ground conditions, workspace and existing underground utilities.
Application Case | Xinxiang District Heating Upgrade Project, Pingyuan Road (Heping Road-Xinfei Avenue)
For the Xinxiang District Heating Upgrade Project along Pingyuan Road (Heping Road-Xinfei Avenue), the company used HDD to install a district heating pipeline. The pipeline diameter is 450 mm and the construction length is approximately 600 m, with the pipeline installed trenchlessly along the urban road corridor.
技术说明与应用案例
施工技术与设备能力
公司配置小型、中型及大型水平定向钻设备，可根据项目规模和穿越条件进行设备匹配。
- 设备型号包括XZ320D/D10x15、XZ680/DE0x90、XZ1000+/DDW-3000等。
- 典型施工流程包括导向孔钻进、轨迹控制、分级扩孔及管线回拖。
- 设备选择和施工组织需结合管径、穿越长度、地层条件、作业空间及既有地下设施等约束条件。
应用案例｜新乡热力技改项目平原路（和平路-新飞大道）
在新乡热力技改项目平原路（和平路-新飞大道）段，公司采用水平定向钻方式实施热力管线施工。管径为450 mm，施工长度约600 m，通过非开挖方式完成城市道路沿线热力管线铺设。
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