薄煤层无巷旁充填沿空留巷特种支护技术

Special Support Technology of Gob-side Entry Retaining With Non-roadway Side Filling in Thin Coal Seam

以某矿2#煤层的某采区为研究对象,进行了无巷旁充填沿空留巷特种技术研究。以该采区地质特征为基础,提出了单体支柱代替木密集支柱,配合"十"字铰接顶梁的沿空留巷支护方法;进行了支护参数的计算,并研究了各支护工序的时空配合关系。现场实测数据表明,该支护手段效果显著,严格控制了沿空巷道的变形。

Taking a certain mining area of No. 2 coal seam in a coal mine as the research object, special support technology of gob - side entry retaining with non - roadway side filling was researched. Based on the geologic features of this mining area, support method of gob - side entry retaining was proposed. The method replaced dense wood prop with single prop, and cooperated intersection hinge roof. The support parameters were calculated, and time - space coordination between each support process was researched. The field measured data showed that this support method had a remarkable effect and strictly controlled the deformation of gob - side entry.