The new surveying method of studying the internal layers deformation law

• 来源期刊: 煤炭学报（英文版）
• 学科: 工学
• 年，卷（期）: 2001,（2）
• 页码范围: 36-39
• 页数: 4页
• 分类号: TD1
• 语种: 英文

摘要

This thesis illustrates the method and precision of employing analytica l photogrammetry to carry out similar materials model experiment in surveying th e displacement of surveying points and analyzing the deformation law of rock lay ersand earths surface according to the results in the studying the deformation law of the earths surface caused by extracting mine coal underground.