月球钻进中正面钻遇砾石地层的负载参数特征分析

Analysis of load parameters characteristics of frontal drilling into gravel strata in lunar drilling

摘要:

人类对月球的探索逐渐深入，月壤中存在的砾石地层会在月球钻探中给钻探设备带来磨损与故障风险。本文以砾石含量、砾石尺寸与砾石层厚度为影响因素，以钻进功率、钻进扭矩与钻进阻力为目标参数，进行正交试验，得到以下结论：对钻进功率的影响从大到小排序为砾石尺寸、砾石含量、砾石层厚度，功率随砾石含量增加呈先降后升趋势，随砾石尺寸增加呈先升后降趋势，随砾石层厚度升高呈先升后降趋势。对钻进扭矩的影响从大到小排序为砾石层厚度、砾石含量、砾石尺寸，扭矩与砾石含量和砾石层厚度正相关，随砾石尺寸增加先升后降。对钻进阻力的影响程度由大到小为砾石层厚度、砾石含量、砾石尺寸。阻力与砾石层厚度和砾石含量正相关，随砾石尺寸增加呈先降后升趋势。

Abstract:

With the gradual deepening of human exploration of the Moon， the gravel strata in lunar soil undoubtedly bring risks of wear and failure to drilling equipment during lunar drilling. Aiming at this problem， this paper takes gravel content， gravel size and spatial position of the gravel layer as influencing factors， and takes drilling power， drilling torque and drilling resistance as target parameters to carry out orthogonal physical tests， and obtains the following conclusions： the influence on drilling power from large to small is gravel size， gravel content and spatial position of the gravel layer. Power initially decreases and then increases with rising gravel content， initially increases and then decreases with increasing gravel size， initially increases and then decreases with increased complexity of gravel distribution. The influence on drilling torque from large to small is spatial position of the gravel layer， gravel content and gravel size. Torque is proportional to gravel content and thickness of the gravel layer， and the relationship with gravel size is that torque first increases and then decreases with the increase of gravel size. The influence degree on drilling resistance from large to small is spatial position of the gravel layer， gravel content and gravel size. Resistance is proportional to thickness of the gravel layer and gravel content， and the relationship with gravel size is that resistance first decreases and then increases with the increase of gravel size.