Close-range thin coal layer simultaneous mining and parallel transporting method

A thin coal seam, short-distance technology, applied in ground mining, mining equipment, earthwork drilling and mining, etc., can solve the problems of difficult tunneling support, long mining cycle, low output, etc., to improve mine output and production efficiency, reduce The effect of excavation engineering quantity and production cost reduction
CN102392640BInactive Publication Date: 2013-11-06SHANXI LUAN ENVIRONMENTAL ENERGY DEV +1
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANXI LUAN ENVIRONMENTAL ENERGY DEV
Publication Date
2013-11-06
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a close-range thin coal layer simultaneous mining and parallel transporting method, aiming to solve the problems caused by layer mining of the existing close-range thin coal layers, such as resource waste, serious flood, difficult mining distribution of lower layer coal, long mining period, low yield, high tunneling and supporting difficulties, high cost and the like. The method is characterized by arranging a centralized transport roadway, a centralized track roadway and a centralized air return roadway along the coal layers or top and bottom plates of the coal layers, simultaneously arranging two coal faces on the close-range thin coal layers and simultaneously mining and transporting coal. The method has the following beneficial effects: simultaneous mining and centralized transporting of the upper and lower coal layers are realized; relative to layer mining, by adopting the method, the tunneling quantities of the roadways are reduced, a belt conveyer can be simultaneously omitted, and the convenience is provided for centralized management of production; and especially for the close-range thin coal layers, the production system is simplified, the convenience is provided for centralized management, the production cost is lowered, and the mine output and the production efficiency are improved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a method for simultaneous mining and transportation of short-distance thin coal seams. Background technique

[0002] At present, the short-distance thin coal seam, that is, the coal seam with an interlayer spacing of less than 8 meters, is mainly mined in layers, that is, after the upper layer of coal has been mined, the lower layer of coal will be mined after the roof is stable. The disadvantages of this mining method The reason is: after the upper layer coal is mined, due to the long-term water accumulation in the goaf, the mining of the lower layer coal will cause serious flooding; the various coal pillars left during the mining process of the upper layer coal will cause local area damage to the roof of the lower layer coal. Stress concentration, the development roadway of the lower layer coal must avoid the stress concentration area, which brings adverse factors to the layout of the roadway. In order to avoid the stress con...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More