Handan Zhongfu Industrial And Mining Accessories Co., Ltd.
Handan ZhongFu company is a professional manufacturer for underground mining supporting products with over ten year experience. We can manufacture Split sets ,friction bolt, Combi split sets, Expandable friction bolt,Swellex, Threaded bar bolt, Cable bolt, Combi cable bolt, Welded mesh, Domed plate, Nuts, other mining Equipment.
Conditions for rock burst occurrence, summarized as follows:
from the excavation of the pit wall, the rock mass quickly fly out, when the seriousness of the entire excavation face instantly crushed
in the buried depth of 700-800m from the easy to occur, 200m or so there are examples of the occurrence
the rock quality occurs in a different way, not easy to occur in the angular rock geology, but in the quartz diorite occurs more often
do not occur when there is a water surge
and the direction of the stratum, joints, interbedded and so on, such as the occurrence of more smooth layer
rock size varies, but mostly flat
rock bursts occur in the vicinity of the excavation face of the more
in the same geological conditions, the use of tunneling machine construction occurs less, the use of mining method of construction occurs more
Types of rock bursts
1
2
3
Rock burst treatment measures
Spraying water to the rock surface
Shotcrete
System anchors, especially friction-type anchors
Spraying steel-fiber concrete;
In some special cases, such as rock bursts occurring frequently, and more intense, usually using steel mesh or steel support with spray support for reinforcement.
Rock burst monitoring method
01
AE method (i.e., acoustic emission monitoring method)
02
microseismic monitoring method
03
geologic section imaging technology.
Our address
West Side Of Jianshe Street, Southwest Industrial Zone, Linmingguan Town, Handan, Hebei, China
Phone Number
+8615830050566
zfgongkuang@aliyun.com
