The instability fault of mining support is one of the common faults of hydraulic support. According to the relevant statistical data, the failure rate of support instability in China’s large mining height fully mechanized mining face reaches 6% – 10%. Support slip reversal, support collapse or tilt are the manifestations of support instability.
The hydraulic support dumping mainly refers to the relative displacement between the base and the top beam along the inclination, which causes the support to deviate from the normal direction of the coal seam floor along the inclination. If a support dumping accident occurs in the mining process, it will often lead to dozens or even dozens of supports dumping. It will not only take a lot of time to deal with, but also be difficult, which will have a serious impact on coal mine production.
1. For example, if the inclination angle of the mining hydraulic support is less than 5 degrees, in the process of moving it, it is necessary to use a special wooden formwork at the foot of the inclined side of the support, dig holes and tilt up one side. In the process of moving the support, it is necessary to use the support side guard Jack to adjust;
2. If the support has obvious inclination, it is necessary to install an anti overturning jack on the basis of the first step, and tighten it in the opposite direction of the inclination during the movement of the support, and pay attention to the inclination of the support during the tightening process, so as to avoid excessive force causing the adjustment or inclination of the support to intensify;
3. The support tipping fault should be adjusted through multi shift coordination and cooperation, and it can be adjusted after several repetitions. In this process, the pressure shifting frame sometimes needs the cooperation of single support.
Sealed One-stop Purchasing：
WhatsApp: +8613273692757
Website: www.xinxingxiangke.com
