Method for three-dimensional support by using long, medium, and short anchor rods
A medium-length anchor rod and anchor rod technology, which is applied in the installation of anchor rods, earthwork drilling, mining equipment, etc., can solve the problems of short self-stabilization period, increased support difficulty, poor engineering stability, etc., to maintain its own strength Effect
Inactive Publication Date: 2015-12-16
LONGKOU MINING GRP
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AI-Extracted Technical Summary
Problems solved by technology
The invention relates to a method for three-dimensional support by using long, medium, and short anchor rods. The method comprises first support and second support. The second support comprises: (1) applying short anchor rods to control surface surrounding rocks, to form a stable bearing arch to anchor and support; (2) applying medium-length anchor rods, to anchor the bearing arch formed by the short anchor rods on a relatively stable rock stratum, and forming a new thickened bearing arch at the same time, so the bearing arch becomes stable; (3) applying long anchor rods to further anchor the above bearing arches on a stable rock stratum. The method is advantaged in that characteristics of soft rocks determine that support of the soft rocks must be rapid and timely, and surrounding rocks are effectively sealed, to put an end to a channel which may continue weathering and peeling, strength of the surrounding rocks are maintained to the largest extent, so after roadway driving, rapid support with certain strength must be performed, and the surrounding rocks are sealed in time, to put an end to a channel which absorbs water and expands, thereby achieving an objective of roadway support.
EngineeringRock bolt +1
- Experimental program(1)
|Length||2500.0 ~ 3000.0||mm|
|Length||3500.0 ~ 4000.0||mm|
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