Expertise

The pilot hole is the first step of construction, and subsequent reaming and pipe pulling operations are carried out on this basis. The quality of the pilot hole, such as the turning radius of the deflecting section, the smoothness of the trajectory curve, and the position of avoiding underground obstacles, directly determines the success or failure of subsequent pipe pulling operations, so the construction of the pilot hole must be done carefully.

This artical mainly tells construction workers how to maintain their hdd machines in worksite  , so as to prolong the machien's working life and working efficiency

Static pile driver Projects by Trenchless Technology

Underground Pipelines Projects by Trenchless Technology

This text briefly describes the drilling challenges in four main stratum types and the corresponding hole-forming fluid (drilling fluid) solutions, as well as lubrication and drag-reduction technologies for trenchless pipe jacking.

Trenchless Technology Reduces Urban Traffic Disruption

This text covers key knowledge and technical details of trenchless technology, including its definition (pipeline laying, replacement and repair without excavation to cross rivers, roads and buildings) and necessity (solving traditional excavation's impact on life/traffic, lower cost, applicability where excavation is impossible); included technologies like engineering geological investigation and horizontal directional drilling; underground pipeline materials (steel, cast iron, plastic, etc.) and main materials for drainage (precast concrete pipes), gas (steel pipes) and thermal pipes (seamless steel pipes); meanings of pipe material abbreviations such as PE (polyethylene); applicable scenarios for trenchless construction (e.g., burial depth >3m, under busy roads); guided drilling principle (cooperation of guide bit, rig and instrument, with straight/directional drilling via drill string operation); environmental applications of horizontal directional drilling (groundwater extraction, biological remediation, etc.); common technical difficulties in horizontal directional drilling (hole collapse, drilling fluid loss, pipe sticking) and prevention measures; key points for crossing hard rock formations (focus on drilling fluid's lubricity/cooling); and pipeline internal inspection methods (international like TV inspection, domestic like mud measuring bucket inspection) plus sonar method's detection capabilities (inspecting water/sludge-covered parts, providing pipeline dimensions, showing deformation).

Improving the efficiency of surface drilling rigs is a systematic project, involving multiple aspects, including equipment selection, process optimization, personnel management, and maintenance. Simply pursuing drilling speed while neglecting other aspects often results in ineffective results.

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