back reaming

简明释义

倒划眼;

英英释义

例句

1.The project faced delays due to the need for back reaming after an unexpected rock formation was found.

由于发现了意外的岩石层，项目面临延误，需要进行反向扩孔。

2.The contractor recommended back reaming as a solution for the difficult terrain.

承包商建议使用反向扩孔作为应对困难地形的解决方案。

3.The drilling team decided to perform back reaming to ensure the borehole was clear of debris.

钻探团队决定进行反向扩孔以确保钻孔内没有杂物。

4.To improve the flow of water, the engineers opted for back reaming in the pipeline.

为了改善水流，工程师选择在管道中进行反向扩孔。

5.After encountering a blockage, we had to use back reaming to enlarge the hole.

在遇到堵塞后，我们不得不使用反向扩孔来扩大孔径。

作文

In the field of drilling and excavation, various techniques are employed to ensure efficiency and precision. One such technique is known as back reaming, which plays a crucial role in the process of installing pipelines and other underground utilities. The term back reaming refers to the method of enlarging an existing borehole by using a reaming tool that is pulled back through the hole after the initial drilling has been completed. This process is particularly useful when the borehole needs to be widened to accommodate larger pipes or when the original drill path has encountered obstacles or irregularities.The significance of back reaming lies in its ability to enhance the efficiency of the drilling operation. By utilizing this technique, contractors can save time and resources, as it eliminates the need for a new borehole to be drilled. Instead, the existing hole is modified to meet the required specifications. This not only speeds up the installation process but also reduces the environmental impact associated with additional drilling activities.Moreover, back reaming is essential for ensuring the integrity of the pipeline being installed. When a pipeline is inserted into a borehole, it must fit securely to prevent leaks and other issues. The reaming process allows for precise adjustments to the size and shape of the borehole, ensuring that the pipeline can be installed without complications. This is particularly important in sectors such as oil and gas, where the reliability of the infrastructure is paramount.The technique of back reaming involves several steps. First, the original borehole is drilled using a pilot bit, which creates a narrow pathway. Once the pilot hole is established, the reaming tool is attached to the drill string and pulled back through the hole. As it moves, the reaming tool expands the diameter of the borehole, effectively creating a larger cavity. This process can be repeated multiple times if necessary, depending on the size of the pipeline being installed.In addition to its practical applications, back reaming also requires a skilled operator who understands the intricacies of the equipment and the geological conditions of the site. Proper training and experience are essential to ensure that the process is carried out safely and efficiently. Operators must be able to assess the condition of the borehole and make adjustments as needed to avoid potential problems during the reaming process.In conclusion, back reaming is a vital technique in the drilling industry that facilitates the installation of pipelines and underground utilities. Its ability to modify existing boreholes efficiently makes it an invaluable tool for contractors. By understanding and mastering the process of back reaming, professionals in the field can improve their operational efficiency, reduce costs, and ensure the successful completion of projects. As technology continues to advance, the methods and tools used in back reaming will likely evolve, further enhancing its effectiveness in the industry.

在钻探和挖掘领域，采用多种技术以确保效率和精确性。其中一种技术被称为回铰，它在安装管道和其他地下设施的过程中发挥着至关重要的作用。术语回铰指的是通过在初始钻探完成后使用一个铰刀工具向后拉动以扩大现有孔洞的方法。当孔洞需要扩大以容纳更大的管道，或者当原始钻孔路径遇到障碍或不规则时，这一过程尤其有用。回铰的重要性在于它能够提高钻探操作的效率。通过利用这一技术，承包商可以节省时间和资源，因为这消除了钻新的孔洞的需要。相反，现有的孔洞被修改以满足所需的规格。这不仅加快了安装过程，还减少了与额外钻探活动相关的环境影响。此外，回铰对于确保所安装管道的完整性至关重要。当管道插入孔洞时，必须牢固适合，以防止泄漏和其他问题。铰削过程允许对孔洞的大小和形状进行精确调整，确保管道可以顺利安装。这在石油和天然气等行业中尤为重要，因为基础设施的可靠性至关重要。回铰的技术涉及几个步骤。首先，使用导向钻头钻出原始孔洞，形成一个狭窄的通道。一旦建立了导向孔，就将铰刀工具连接到钻杆上，并向后拉过孔洞。当它移动时，铰刀工具扩大了孔洞的直径，有效地创建了一个更大的腔体。根据需要，这一过程可以重复多次，具体取决于所安装管道的大小。除了其实际应用外，回铰还需要熟练的操作员，他们了解设备的复杂性和现场的地质条件。适当的培训和经验对于确保过程安全高效地进行至关重要。操作员必须能够评估孔洞的状况，并在需要时进行调整，以避免在铰削过程中出现潜在问题。总之，回铰是钻探行业中的一种重要技术，促进了管道和地下设施的安装。它有效修改现有孔洞的能力使其成为承包商不可或缺的工具。通过理解和掌握回铰的过程，行业专业人士可以提高操作效率，降低成本，并确保项目的成功完成。随着技术的不断进步，在回铰中使用的方法和工具可能会不断发展，进一步增强其在行业中的有效性。