破碎底板条件下大倾角工作面综采设备稳定性技术

Stability Technology for Fully Mechanized Mining Equipments in Steeply Inclined Working Face Under Condition of Broken Floor

三河尖煤矿7126工作面平均倾角36°,综采设备滑倒现象严重,严重影响工作面的安全生产,对7126工作面进行了调伪斜设计,得出伪斜距离为28~30 m时,能够很好的保证工作面设备的不下滑;针对工作面底板破碎条件,采取了底板超前工作面注浆加固技术来防止底板岩层的下滑破坏;同时对工作面综采液压支架、采煤机、刮板输送机进行了防倒、防滑技术改造。经过现场实践应用,上述技术措施很好的保证了大倾角工作面＂三机＂设备的稳定,实现了大倾角工作面安全高效开采。

The average inclined angle of 7126 working face in Sanhejian Coal Mine is about 36°, thus the sliping phenomenon of the fully mechanized equipments was very seriously, and it had a strong impact on the safety and the production at the face. This study made adjusted oblique design for 7126 working face, and obtained that when the oblique distance was about 28 to 30 m, it could guarantee the equipments not to slip. In allusion to the condition of the face＇s broken floor, it adopted the grouting strengthening technique in advanced of the working face floor to prevent the decline in the destruction of floor strata. In the mean while, anti - down and non - slip modification for the fully - mechanized hydraulic support, the shearer, the scraper conveyor was done. Through the practical appli- cation, the technical measures guarantee the stability of ＂ three -machine＂ equipments at large inclined angle working face, and a- chieve the safety and hight efficient mining.