在学朝阳农学院的高潮中,我们坚持教学、科研、生产三结合的原则,配合塑料护孔科研工作,试验成功钻孔测漏仪,经室内和生产试验,均取得了良好效果现简略介绍如下.一、问题的提出钻进复杂地层的堵漏与护壁技术是战胜 In the climax of learning Chaoyang Agricultural College, we adhere to the teaching, scientific research, production of the principle of three combinations, with plastic shield research work, successful pilot drilling leak detector, indoor and production tests, have achieved good results are briefly described below First, the problem put forward Drilling into the complex formation of plugging and retaining wall technology is to defeat