What is the difference between the support of shed support and the support of joist support in coal mine?
Lift the wooden shed, shed a steel shed, mainly from the temporary support role, not a permanent support, lift shed a trapezoidal shed, a three column form, mainly I-steel shed permanent support for. Two support process is the first column dig nest, and then planted a leg, finally.
Two support process is the first column dig nest, and then planted a leg, finally.
I-beam is more stable, and I-beam is used in the mine with high pressure and deep well.The joist shed is mainly used for permanent support.
In the coal mine lift shed support including timbering support, steel shed support; construction according to the form of a ladder, shed, a three beam column form.The main role of temporary support, do not do permanent support, in addition, shed support is cheaper.The shed support is mainly used in shallow and small pressure mines
