神华科技
神華科技
신화과기
NORTHWEST COAL
2014年
3期
37-39
,共3页
转采设计%放顶煤%设备防滑
轉採設計%放頂煤%設備防滑
전채설계%방정매%설비방활
Rotating Mining%Top Coal Caving%Equipment Antiskid
倾斜长臂综采放顶煤工作面,转采角23°,转采工艺的设计及转采时的斜切比例,对控制前后刮板机、支架下滑采取的安全措施和拐点扩帮区域有着特殊的支护。根据上下巷两拐点不在同一素线的情况,确定上巷推进越过拐点的超前距离。选择工作面以外的旋转中心,是为了克服长短刀推进时给工作面带来的困难和影响,以及对工作面工程质量的影响,同时也加大了长短刀的比例。通过割煤、推移刮板机的方向和拉支架的顺序,控制前后刮板机上下窜量,以保证两机头的接煤效果。按计算出的拐点扩帮量,估算了顶板的压力,选择了转角处分两次扩帮、锚杆锚索外加单体支柱和木垛的支护方式和方法,确保了顶板的稳定和安全。
傾斜長臂綜採放頂煤工作麵,轉採角23°,轉採工藝的設計及轉採時的斜切比例,對控製前後颳闆機、支架下滑採取的安全措施和枴點擴幫區域有著特殊的支護。根據上下巷兩枴點不在同一素線的情況,確定上巷推進越過枴點的超前距離。選擇工作麵以外的鏇轉中心,是為瞭剋服長短刀推進時給工作麵帶來的睏難和影響,以及對工作麵工程質量的影響,同時也加大瞭長短刀的比例。通過割煤、推移颳闆機的方嚮和拉支架的順序,控製前後颳闆機上下竄量,以保證兩機頭的接煤效果。按計算齣的枴點擴幫量,估算瞭頂闆的壓力,選擇瞭轉角處分兩次擴幫、錨桿錨索外加單體支柱和木垛的支護方式和方法,確保瞭頂闆的穩定和安全。
경사장비종채방정매공작면,전채각23°,전채공예적설계급전채시적사절비례,대공제전후괄판궤、지가하활채취적안전조시화괴점확방구역유착특수적지호。근거상하항량괴점불재동일소선적정황,학정상항추진월과괴점적초전거리。선택공작면이외적선전중심,시위료극복장단도추진시급공작면대래적곤난화영향,이급대공작면공정질량적영향,동시야가대료장단도적비례。통과할매、추이괄판궤적방향화랍지가적순서,공제전후괄판궤상하찬량,이보증량궤두적접매효과。안계산출적괴점확방량,고산료정판적압력,선택료전각처분량차확방、묘간묘색외가단체지주화목타적지호방식화방법,학보료정판적은정화안전。
Slant long arm of fully mechanized top coal caving face with a face length rotating mining angle 23°, the design of rotating mining craft and beveling proportion control front and back scraper and stent decline, take special support for inflection point expanding state regional. According to the upper and lower lane inflection points are not in the same line, confirm the ad-vance distance across the inflection point lane. Choose the center of rotation outside working face to overcome the difficulties and influence that long-short knife takes to working, as well as engineering quality while boosting, but also increased the proportion of long -short knife. By cutting coal scraper, change bracket direction and limb frame sequence, control before and after the scraper shift to ensure coal receiving effect, estimating the roof pressure according to inflection point expansion amount, choose a support way and method on two times expansion angle of rock bolt anchor rope coupled with single prop and wood block at the corner, to ensure the stability and security of the roof.