Potable water supply remains a critical issue in the peri-urban areas of Kinshasa, particularly in the Mpasa 2 district (Nsele municipality), which is characterized by unconsolidated sandy formations. This study investigates the technical and geotechnical aspects of water well drilling in sandy environments, with a focus on borehole stabilization techniques and the hydraulic performance of completed wells. The methodology integrates field observations, grain-size distribution analyses, and interviews with drilling practitioners. Results indicate that inappropriate drilling and stabilization methods result in borehole collapse, tool loss, and diminished hydraulic efficiency. Based on these findings, best-practice recommendations are proposed to improve the sustainability and performance of future wells in similar geological settings.
Our study is a contribution to the development of a technical reference guides which advice on precautions to take by the road carriers, especially those who do the BITABE-MALUKU axis in Kinshasa province, capital of the Democratic Republic of Congo.
In this work, we got hitched to present the Psycho-chemical analysis data and some techniucal facts that can constitute parameters that affect the tire perfomance: The choice of the tire following the destined type of service; The camber angle; The inclination of the axle pivot; The tire mounting; The vehicle mechanical irregularities; Choice of tubing flaps and rim; Inflation pressure control; The pinching and opening; Steering arm angle; The road condition; Whether condition; The unzipping; The wheel rim.
This study is a contribution to the development of a logical troubleshooting flowchart of hydraulic circuit of hydraulic sawmills machines (hydraulic trimmer, hydraulic edger, hydraulic bumper and so on...).
The following techniques retained as criteria for the breakdown research and their troubleshooting: Troubleshooting from the operating table, Troubleshooting from the diagram, Troubleshooting from the equation, Troubleshooting from the grafcet.
The study showed on one site that the good choice of a troubleshooting technique sufficiently reduces the troubleshooting time of the failure and its repair, and on the other side avoid the prolonged shutdowns of industrial production.
However, the troubleshooting is at the same time a technique, a science and an art often difficult to apply (LEFEVRE, 1990, 74).
Show abstract
Full Text
