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岩心鑽探一般淺孔(300米以下)均广泛的採用三脚木制鑽塔。因它既輕便灵活,又能适应各种不同鑽孔倾角的要求。但按装設計时因已知条件太少,一般都须根据实际經驗,假设一些条件方能进行。往往由于所假设条件不适当,而使按設的鑽塔天輪、立軸、井口三者不成一綫,以致不符合生产要求,严重者还需返工。为此特将我們在实际工作中的几点經驗介紹如下: 一、前塔脚寬度前塔脚宽度一般都根据塔的垂直高度来确定。实踐証明,垂直高度不超过9米,两脚寬度为4米;若超过9米为4.5米。这样所建之鑽塔塔柱的受力及一
Core drilling generally shallow holes (300 meters below) are widely used three-legged wooden drill tower. Because it is both light and flexible, but also to adapt to a variety of different drilling requirements. However, due to the installation design known conditions too little, generally based on actual experience, assuming that some conditions can be carried out. Often due to the assumed conditions are not appropriate, leaving the set according to the tower wheel, vertical shaft, wellhead three out of line, resulting in non-compliance with production requirements, in severe cases need to rework. To this end we will experience in the actual work of a few experiences are as follows: First, before the foot width before the foot width of the tower are generally based on the vertical height to determine. Practice has proved that the vertical height of not more than 9 meters, two feet width of 4 meters; if more than 9 meters to 4.5 meters. The construction of the tower and tower drill column force and one