1. Home
  2. >>
  3. Good Strip Ratio For A Coal Mine

Good Strip Ratio For A Coal Mine

Extraction ratio will put pillar stress close to peak strength and provide ample expansion room for the failed pillar material.2 width-height ratios of pillars are always less than 3 for coal mine failures, usually much less than 1 in metal-mine failures, and less than about 2 for nonmetal mine failures.

We are a mining equipment production and sales company, with three production bases and four research institutes, more than 600 production equipment, precision production, and service globally.

What Can I Do For You?

Hello! If you are interested in our products and leave your needs, we will reply to you in time!

Get Price ws

We will strictly protect the privacy of users'personal information and never disclose it.

message

RelatedNews

Our company has won wide praise at home and abroad with exquisite technology and advanced technology, and has become the export base of China's large-scale mining machinery