较低，更安全

冒险的调查
Risk increases when stopes must be surveyed. Stopes are the result of multilevel galleries union after successive explosions.
These rock-surrounded rooms are unstable, with loose sterile ore falling and walls collapsing. So risky, in fact, human access inside stopes is forbidden by safety engineers on site. Surveying control of these excavations requires high risk management.

精确的维度和数量确定是成功的画廊发掘计划和一般地雷探索计划的关键。

Anglogold Ashantis, a leading global gold producer, operates four mines in the Brasilian state of Minas Gerais and Goiás. At almost 400 metres deep, the company’s Córrego do Sítio 1 Mine needs detailed information about its galleries and stopes for

• 数量计算
• 3D models creation
• 我的和解

传统上，使用总站进行了阶梯调查。bob apple这些调查是尽快进行的，因为测量师处于阶梯结构内的高风险情况下。

收集了几个点，并插值和广义的空间尺寸。但是，通过使用激光扫描，矿山计划者可以使用更高的数据质量。

Story: The lower, the safer
Chapter 1:介绍
Chapter 2: A risky survey
Chapter 3:激光扫描更安全，更快