The problems and countermeasures in the self drilling rock bolt applicaton fo

In order to improve the stability of roadway itself, avoided the surrounding rock deformation and the situation of the collapsing, after drifting in the roadway drivage, which needs to take measures for supporting.And with the development of technology and practice, the self drilling rock bolt support technology has become the main measures for roadway support .The technology of bolting itself is relatively simple, its mechanization degree relatively high , not only can save cost, but also can improve the speed of construction, ensure the safety of construction, compared to previous self drilling rock bolt supporting technology, its advantage is very obvious.But now in the coal mine self drilling rock bolt support, there are still some problems, it is very bad for the better development of self drilling rock bolt support technology.

1, Some problems of self drilling rock bolt support technology in the coal mine

(1) When self drilling rock bolt support for roadway, prestressed are relatively low

(2) The standardization degree is not enough when self drilling rock bolt and related accessories processing

(3) The machinery tool development is relatively backward when constructing

(4) monitoring technology of self drilling rock bolt and monitoring instruments are not sound

2,Some countermeasures for improving anchor bolt support technology

(1) The development of all metal prestressed self drilling rock bolt

(2) A certain improvement for the self drilling rock bolt construction machines and tools

(3) Development and use on the technology of anchored excavation machine

(4 )Research and development for bolting monitoring technology