Design and Application of New Process for Rapid Withdrawal of Support in Fully-mechanized Mining Face
In Yonghong Coal Mine,the traditional support withdrawal technology used in fully-mechanized mining face in the past has many problems,such as excessive use of winches,large labor number and intensity,low efficiency and poor safety,which seriously affect the efficiency and safety of support withdrawal.A new process for the rapid withdrawal of support based on hydraulic support transfer device and monorail crane was designed and applied in 3401 fully-mechanized mining face.The results showed that the adoption of the new technology of support rapid recovery only took 20 d to safely and efficiently complete the disassembly,installation,transportation and closing tasks of 138 supports,which was 6 d earlier than the previous support recovery time,saving 4.4×105 yuan in recovery costs,and improving economic benefits under the premise of ensuring production safety.
Yonghong Coal Minesupportwithdrawalhydraulic support transfer devicemonorail crane
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