澳门大口径嵌岩桩，正循环、反循环、整体、极速、跟管潜孔锤怎么选

中文摘要：澳门花岗岩嵌岩桩口径大、上软下硬且多孤石。中科振宇是深耕粤港澳大湾区的研发型潜孔锤厂家，φ300至3000mm全系列，含正循环、反循环、整体式、极速式、跟管、集束、环切，主机可配多功能或长螺旋钻机，可租可售、一站式。

English Summary: Macau granite rock-socketed piles are large in diameter, soft above and hard below, often with boulders. Zhongke Zhenyu is an R&D-focused GBA manufacturer offering a full φ300–3000mm range: direct, reverse, integral, high-speed, casing, cluster and ring-coring DTH hammers, on multi-purpose or long-auger rigs, for sale or rent with one-stop service.

1. 上部软土、回填、破碎易塌：用跟管潜孔锤，套管同步跟进护孔。
2. 普通花岗岩、凝灰岩硬岩：用整体式或极速式（正循环）潜孔锤，常规入岩。
3. 溶洞、裂隙、漏失地层：用反循环潜孔锤，气渣走中心、不碰孔壁。
4. 大口径硬岩桩：用集束式潜孔锤，多子锤同步冲击、全断面破碎。
5. 完整硬岩想省气、省空压机：用环切（取芯）潜孔锤，只破外圈、取出岩芯。

1. 多功能钻机，旋挖钻机：一台主机兼顾多种工况，适应澳门复杂地层。
2. 长螺旋钻机：加装潜孔锤凿岩系统后也能入硬岩。

   
   

   钻机原机不用大改，软硬地层都能应对，不必另购专用钻机。

1. 前期：看地勘、看桩径，选工艺、选型号。
2. 设备：全系列潜孔锤销售，多功能及长螺旋钻机改装，也可租赁。
3. 售后：冲击器拆卸维修、钻头合金齿镶补、钻杆校直修补，配件及时供应。

   
   

   从前期选型到设备用旧后的维修，能在一家做完全流程的厂家并不多见。

1. 1998年成立，二十多年专注大直径潜孔锤研发、生产与凿岩应用，拥有国家专利。
2. 早在2018年、2020年连续在上海国际工程机械宝马展（bauma CHINA）展示国产正循环、反循环、极速式潜孔锤。
3. 深耕粤港澳大湾区、持续服务深圳市场，从广州经港珠澳大桥到澳门运输便捷。
4. 项目案例覆盖海南、长白山、新疆、西藏等不同地质地区。

1. How to choose by ground condition?

1. Soft soil, backfill or collapsible broken ground above: use a casing DTH hammer with simultaneous casing to support the borehole.
2. Ordinary granite or tuff hard rock: use an integral or high-speed (direct-circulation) hammer for standard rock socketing.
3. Karst cavities, fissures or fluid-loss ground: use a reverse-circulation hammer—air and cuttings return through the centre without contacting the wall.
4. Large-diameter hard-rock piles: use a cluster hammer, with multiple hammers striking simultaneously to break the full face.
5. Intact hard rock where air and compressor capacity should be saved: use a ring-coring (core) hammer that breaks only the outer ring and retrieves the core.

1. Flexible host rig options

1. Multi-purpose rig: one host machine handles multiple conditions, suiting Macau's complex ground.
2. Long-auger rig: once fitted with a DTH rock-drilling system it can also penetrate hard rock.

   
   

   The original rig does not need major modification; it can handle both soft and hard ground without buying a dedicated rig.

1. One-stop service, rent or buy

1. Early stage: review ground investigation and pile diameter, then select the method and model.
2. Equipment: sale of the full DTH range, modification of multi-purpose and long-auger rigs, and rental.
3. After-sales: dismantling and repair of hammers, re-setting of carbide buttons on bits, straightening and repair of drill rods, with prompt supply of parts.

   
   

   Few manufacturers can cover the whole process from initial selection to repair after years of use.

1. Why Zhongke Zhenyu?

1. Established in 1998, with over twenty years focused on large-diameter DTH hammer R&D, production and rock-drilling application, holding national patents.
2. Showcased domestic direct-circulation, reverse-circulation and high-speed DTH hammers at bauma CHINA in both 2018 and 2020.
3. Rooted in the Greater Bay Area, continuously serving the Shenzhen market, with convenient transport from Guangzhou to Macau via the Hong Kong-Zhuhai-Macao Bridge.
4. Project cases across Hainan, Changbai Mountain, Xinjiang and Tibet in varied geological settings.