1 the roof fall accident
The roof fall accident occurred mainly in the heading face, roadway open fork or through the office, large section cavern and fracture zone.
Suspension shaft and hoist accident 2
(1) shaft hoisting accident. Well construction process has been a hoisting accident: hoist bucket lifting door is not open when the manhole cover and collided and bucket squat tank accident in working face has not decelerated, bucket bottom bonded debris falling into wellbore accident, bucket flip personnel fall accident in shaft etc.. These accidents can result in significant personal injury accident. Especially the main shaft hoist and reducer shaft broken accident should pay more attention to. Enhance the operating system equipment and protective devices such as not for regular maintenance, operation overload can occur hoisting accident. So the perfect protection device and signal device of hoist, and the improvement of wellhead facilities, strengthen the maintenance of the bucket and the cage, the rope to check, inspection and regular maintenance.
(2) the accident of shaft suspension. Hanging plate after accident is more dangerous, the reasons for its occurrence may be steady increase is not synchronous, may also be the collision bucket hoisting cage or a bell. Flip the hanging plate will be on the hanging plate and the tunneling working surface and equipment damage. The hanging wire rope fracture, hanging articles overload caused by car, all wheel suspension of the seal is not strict management and the personnel fall from the sealing disc, a fixed disk, hanging plate, these are likely to personal injury accident. Therefore, the design of various suspension equipment must comply with the "mine shaft engineering construction and acceptance specification". Usually should be inspected regularly to strengthen management.
3 flood accident
Construction of tunnel, rock in the groundwater and surface water and underground communicated with the sudden influx of people underground space, all possible flooding accident.
4 fire accidents
The fire accident during tunnel construction according to the fire can be divided into external fire and fire. If the illegal use of fire, electrical equipment fire or mechanical friction friction heat and friction spark, gas and coal dust explosion may cause external fire.- 上一篇：Coal mine water inrush and detection technology
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