Introduction
The document discusses the thrust boring method using the PBA series horizontal thrust boring machines, which offer an economical alternative to open-cut methods for pipeline installation. This technique is widely accepted in utility and disposal pipeline construction.

Specifications
The PBA machines are designed for simultaneous drilling and jacking of casings and product pipes, with continuous soil removal via augers. The machines can handle steel casings, either lost or reusable, and are robust enough for difficult soil conditions. The PBA 100 and PBA 200 models cover a diameter range from 219 mm to 1420 mm.

Technical Data

• PBA 100: Forward thrust of 1000 kN, max retraction force of 680 kN, max torque of 20000 Nm, and diesel power of 80 kW.
• PBA 200: Forward thrust of 2000 kN, max retraction force of 1500 kN, max torque of 35000 Nm, and diesel power of 106/156 kW.

Both models have a stroke of 600 mm and a max speed of 44 rpm.

Dimensions
The basic device dimensions for PBA 100 are 1420 mm in width and 5005 mm in length, while PBA 200 is 1900 mm in width and 5525 mm in length. The working pit dimensions vary based on the extension frame used.

Energy Supply
Hydraulic power packs are tailored to the machines' needs, with HS 106 for PBA 100 and both HS 106 and HS 156 for PBA 200.

Conclusion
The document highlights the efficiency and adaptability of the PBA series machines for various soil conditions and pipeline installation requirements. Technical changes are subject to development.