Patent · US Active

Inclined layered solid-filling mining method in ultrathick coal layer

US9494037B2 · kind B2 · utility

2Cited by

1References

5Claims

0Family size

Assignee

China University of Mining and Technology · CN

Inventors

Jixiong Zhang · 安丰镇, CN
Nan Zhou · Beijing, CN
Qiang Zhang · Dalian, CN
Jiwei Guo · Nanhu, CN
Xiaoming Shen · Madison, US
Feng Ju · 安丰镇, CN
Haiqiang Jiang · Beijing, CN

Key dates

Filing date	Jan 22, 2014
Grant date	Nov 15, 2016
Priority date	—
Expiry date	Jan 22, 2034

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21D23/0481
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

In an inclined layered solid-filling mining method in an ultrathick coal layer, tunnels and equipment are arranged according to a solid-filling mining method. An artificial roof for a lower layer is formed by metal meshes and bamboo fences of a first layer a solid-filling mining method. The method is repeated, until the entire ultrathick coal layer is finished. The method is repeated forming additional roofs for subsequent layers.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.