A multi-dimensional, collaborative support method for coal roadways

Abstract

The invention belongs to the technical application field of coal mining equipment, in particular to a multi-dimensional and coordinated support method for coal roadways. Include the following steps. S100~dividing the entire roadway into two sections, which are the rapid excavation process test section I and the rapid excavation section II. S200~Continue to divide in the rapid excavation process test section I, divide the roof into: roof temporary support area, bolter roof anchor protection area and anchor windlass roof anchor protection area; divide the two sides into: empty side area, Roadside anchor protection area for bolter miners, roadside anchor protection area for windlass transporters and artificial anchor protection area for roadway sides. S300~Carry out roadway group monitoring while excavating in the rapid excavation process test section I. S400~Analysis of surrounding rock monitoring data. S500~Anchor cable deformation matching. S600~Dynamic matching of bolt and cable preload. S700~rapid excavation cycle operation. The invention has wide application range and high practical value, and is a safe and reliable support technology method in a fast excavation system, with reasonable technology and clear law of mine pressure.

Description

technical field [0001] The invention belongs to the technical application field of coal mining equipment, in particular to a multi-dimensional and coordinated support method for coal roadways. Background technique [0002] In 2019, my country built more than 1,200 large-scale coal mines of 1.2 million tons or more, of which 44 were 10 million-ton coal mines, and 35 10-million-ton coal mines were under construction or expanded. Raw coal production increased from 620 million tons in 1978 To 3.75 billion tons in 2019, an increase of 5 times. With the continuous construction and commissioning of large-scale and intelligent mines, and the continuous increase of production capacity, higher requirements are put forward for the speed, quality, mechanization and intelligence of roadway excavation. Relevant data show that in 2018, the length of newly excavated roadways in my country's coal mines is about 12,000 kilometers per year, and the excavation length ranks first in the world. ...

AI Technical Summary

Problems solved by technology

Solve the problem of lack of process optimization methods and guidelines in the existing coal roadway rapid excavation equipment and technology, further tap the potential of rapid excavation and release productivity; solve the problem of lack of monitoring and pre-warning of bolt and cable lagging support; solve the problem of bolt Anchor cable deformation matching and prestress matching blindness problems; solve the problem of roadway excavation construction, surrounding rock monitoring and adjustment and improvement processes disconnected from each other

Images