Bored Pile Drilling

Abstract: This paper elaborates on bored pile drilling technology, identifying bored piles as an important type of cast-in-place end-bearing pile. Compared with precast piles, bored piles feature controllable costs, low steel consumption, strong capability for large-diameter and ultra-deep hole forming, wide geological applicability, and low environmental impact, while still facing deficiencies such as sediment cleaning and borehole wall mud cake issues. It also introduces the basic requirements, characteristics, conventional and innovative drilling processes, and points out the broad application prospects of this technology amid technological innovation.

2026-05-20

Diaphragm Wall Drilling

Abstract: This paper briefly describes the development history of diaphragm wall drilling technology and its applications in municipal, water conservancy, transportation and other fields. It details two major drilling methods, namely the panel method and the shaft array method, as well as two drilling sequences, namely horizontal drilling and vertical drilling. It also mentions the advantages of relevant technological breakthroughs, presenting its core content and application value.

2026-05-08

Deep Well Sewage Treatment Well (Deep Well Aeration Process)

Abstract: This paper briefly describes the advantages and domestic & foreign development history of the deep well aeration process, and defines the deep well as the core structure of the system. It focuses on the deep well structure and drilling quality requirements, highlights the key precautions during drilling construction, and specifies the core specifications for structural design and drilling construction.

2026-04-28

Design of Large-Diameter Drilling

Abstract：This paper focuses on the design of large-diameter drilling, elaborating on the design principles and demonstration cases of drilling structure and sequence, as well as key contents including well site layout, wellhead protection, foundation treatment and equipment installation.

2026-04-15

Development Status of Large-Diameter Drilling at Home and Abroad

Abstract: Large-diameter drilling (also known as shaft sinking by drilling method) originated in Western Europe. After technological iterations in various countries, it has been widely applied and relevant equipment developed in the United States, the Soviet Union, Germany and other countries. China conducted trials in 1958 and drilled its first mine shaft in 1969, gradually achieving independent development and expanding its applications to national defense, high-rise buildings, sewage treatment and other fields.

2026-03-26

Detailed Introduction to TBM Cutters, RBM Roller Cutters, RCD Roller Cutters & Wear & Heat-Resistant Materials (Customized Version for Overseas Markets)

This paper focuses on customized demands for overseas markets, introducing four core products: TBM Cutters, Raise Boring Machine (RBM) Roller Cutters, Reverse Circulation Drilling (RCD) Roller Cutters, and Wear & Heat-Resistant Materials. It briefly describes their specifications, advantages, application scenarios and quality standards. The products are compatible with mainstream overseas equipment models, covering various industries and geological conditions. Adopting advanced manufacturing processes, all products are certified under ISO9001 and can be supported with relevant international certifications.OEM/ODM customization is available. Supported by an annual production capacity of 30,000 sets of cutters and over 10,000 tons of wear & heat-resistant materials, together with multilingual technical support and full-cycle after-sales service, the products fully meet the supporting requirements of complex overseas engineering projects.

2026-03-10

3 Minutes to Understand the Wisdom of China's Shield Machines in Metro Construction

This article adopts the "3-Minute Read" perspective to introduce the core role of China's shield tunneling machine as a "mobile smart factory" in metro tunnel construction. It analyzes the principle of achieving "one-pass tunnel completion" through five precise steps, highlighting its significance as an embodiment of the transition from "Made in China" to "Intelligently Made in China" and the applied value of Chinese engineering wisdom.

2026-02-24

A Letter to Our Distinguished Visitors Worldwide

2026-02-06

China's "Deep-sea Space Station" Completes Debut

On February 6, the "Deep-sea Space Station" completed its first application at the Jintang Undersea Tunnel. The 75-meter high-pressure operation broke through the traditional depth limit, marking a new breakthrough in China’s deep-buried tunnel construction technology and filling the domestic gap in relevant fields.

2026-02-06

Company Leaders Attend the Third 2025 Executive Vice Chairman Meeting of the International Association for Large-Diameter Engineering Shafts, Piles and Deep Foundations

On January 10, 2026, the Third 2025 Executive Vice Chairman Meeting of the International Association for Large-Diameter Engineering Shafts, Piles and Deep Foundations was successfully held in Ningbo. Mr. Chao Huanqing, Chairman of our company, Mr. Yang Jingrui, Chairman of our controlled subsidiary (Luoyang Jiujiu Wear-Resistant Material Manufacturing Co., Ltd.), and Mr. Jin Wenge, Vice General Manager of our company, attended the meeting as relevant members of the Association .

2026-01-12