Xiaonan Mine "2004.8.23" spalling accident the evening of 23 August 2004 seven classes, boring team in the 502 class W3 two return air roadway stubble two sides back to the shed construction, duty arrangements outside of stubble by leader forest ×× led back shed, paid by the attendant on duty after shooting squad Yang ×× personally asked to help knock the top. After looking down Bangding pumice arrangements Yang ××, Sun ××, Sun × on the right to help make loading shipments. 23:30, when the two vehicles Bahrain goods, from right under a spray to help shed body hit the Sun ×× waist, causing Sun ×× Section lumbar fractures.

Cause of the accident:

1, the right exists to help by blasting vibrations affect the floating block;

2, knocking help Acmeward lax do not work fine, no effective maintenance of body spray shipment;

3, Sun ×× independent security awareness is poor, dodge is not timely.

Lessons and precautions:

1, where the shotcrete place flipping back shed or shed roof pumice must be to find a class on the net, and body spray for effective maintenance.

2, when a man digging column nest must work a guardianship.

3, strengthen independent security staff education.

4, by this analogy, strengthen safety management, to prevent such incidents from happening again.