论文部分内容阅读
钻孔摄像技术已逐渐被广泛地应用到各种地下勘测领域,而实际勘测环境往往受到各种外界因素的制约,与理论勘测环境存在偏差,导致实际勘测值与理论值存在误差。为此,根据钻孔摄像技术的基本原理,开展从理论上对2种钻孔电视在实际勘测工程中可能存在的误差进行分析,着重对探头处于非正中心位置勘测时产生的误差进行系统的分析研究,计算出钻孔壁的裂隙宽度,结构面的倾向、倾角和宽度的误差,此外,对因钻孔摄像勘测速度带来的误差影响进行分析,并给出建议勘测速度。通过以上研究,可以得出的结论:(1)数字全景钻孔摄像系统的探头处于非钻孔正中心勘测时,所产生的误差非常小,几乎不影响勘测精度;(2)数字钻孔摄像系统的勘测精度高于前视全景钻孔电视;(3)数字全景钻孔摄像系统更适合对结构面进行勘测;(4)钻孔摄像的勘测速度通常为1.5 m/min。
Drilling camera technology has been gradually widely used in various fields of underground surveying. However, the actual surveying environment is often constrained by various external factors and deviates from the theoretical surveying environment, resulting in errors between the actual surveying value and the theoretical value. Therefore, according to the basic principle of borehole imaging technology, this paper analyzes the possible errors of the two kinds of borehole television in the actual survey project in theory, focusing on the systematic error of the probe when it is in the non-center position survey Analysis and study, calculated the width of the crack wall wall, the inclination of the structure surface, inclination and width of the error, in addition, due to the impact of borehole camera survey error rate analysis, and gives the recommended survey speed. Through the above research, we can draw the conclusion: (1) When the probe of the digital panoramic borehole camera system is in the center of non-borehole survey, the error generated is very small, almost without affecting the survey accuracy; (2) Digital borehole imaging The survey accuracy of the system is higher than that of the front-view panoramic boring TV. (3) The digital panoramic borehole camera system is more suitable for surveying the structural plane. (4) The survey speed of borehole camera is usually 1.5 m / min.