Dynamic and Field Analysis of Pile Driving in Cameroun

Complexity and implementation of design norms in Cameroon required a proven foreign expertise, but nowadays local engineers are mastering modern construction techniques. They are turning to pile foundations to solve the problem of construction sites on weak soils. The objective of this work is to present the trend of the country pile-driving capacity of some foundations design and construction companies. The proposed analytical method is based on Finite Element Method and on the theory of wave＇s propagation and transmission along the pile taking into account experimental data on the construction site. The proposed method is validated through recorded data during the construction of the Mungo Bridge in Cameroon, and obtained analytical results are in agreement with experimental results.

油田注水地面系统优化技术研究

油田注水技术是目前在国内外的油田开发方式应用中最为广泛地一种,又被成为二次采油技术。石油作为稀有珍贵的不可再生的地下矿藏,在它的开采本身我们就面临着种种的开采难题,当一个油田矿井经过开发之后,不可再生的特性使它所能发挥的经济效益成为一个固定值,当这一固定值接近极限之后,就可以通过油田注水的开采技术对油田进行二次开发。油田注水技术是在保护了石油层稳定的基础上进行开采的,通过对地下矿井的注水使油井压力保持在一定安全数值范围内,这样不仅能够提高矿井原油的采收率还可以提高开采速度,同时这也是一种降低原油开采成本的重要途径之一。