论文部分内容阅读
多年来,采用传统的钻眼、爆破和装岩顺序的普通凿井法是一种费钱、费时和强体力劳动的凿井方法,对施工人员的身体健康和人身安全有一定的威胁。所以,现在需要一种凿井速度高和建井费用低的方法,以利经济开采。美国矿业局已同美国水泥注浆公司签订了合同,进行采用冲击镐开凿竖井施工方案的技术和经济可行性的论证,研究各种施工方案和详细的设计,试制一套样机装置,并在井下进行试验。这种施工方法的目的是使凿井速度提高25％,凿井成本降低25％。现已提出四种适用于标准类型井筒的凿井方案,即采用导孔排矸和吊桶排矸的两种矩形井筒和两种圆形井筒。
Over the years, the conventional drilling method using the traditional drilling, blasting and rock loading sequence is a costly, time-consuming and labor-intensive sinking method, which poses a threat to the health and safety of construction workers. Therefore, there is a need for a method of high sinking speed and low cost of well construction to facilitate economic exploitation. The US Department of Mines has contracted with the US Cement Grouting Company to demonstrate the technical and economic feasibility of using a pick hammer to dig a shaft and to study various construction options and detailed designs, prototype a prototype unit, experimenting. The purpose of this method of construction is to increase sinking speed by 25% and sinking costs by 25%. There have been proposed four sinkholes that are suitable for standard types of wellbores, namely, two types of rectangular wellbores and two circular wellbores that employ a gangway and a gangway.