Separate type filling method of goaf

[0033] Embodiment one, Figure 1 to Figure 8 as shown,

[0034] a. In the mined-out area 1 to be filled, along the advancing direction of the coal mining face, the interval distance L is arranged longitudinally 1 Hang multiple flexible filling bags 2; the length a of the flexible filling bag 2 is about 10m to 20m, the width b is about 2m to 3m, and the height c is the same as the mining height of the working face;

[0035] b. A plurality of individual pillars 3 are arranged at intervals on the exposed side of the hanging flexible filling bag 2;

[0036] c. Erecting a template 4 on the outside of the flexible filling bag 1 and relying on the single pillar 3;

[0037] d. Fill the flexible filling bag 2 with high-water material through the filling pipe until it is full;

[0038] e. After the high-water material is solidified, the template 4 and the single pillar 3 are removed to complete a row of filling barriers;

[0039] f. With the advancement of the coal mining face, the ver

[0043] Embodiment two, Figure 9 ~ Figure 14 as shown,

[0044] a. In the mined-out area 1 to be filled, along the advancing direction of the coal mining face, the span L of the cut-off area is arranged horizontally 3 Hang multiple flexible filling bags 2; the length a of the flexible filling bag 2 is 10m-20m, the width b is 2m-3m, and the height c is the same as the mining height of the working face;

[0045] b. A plurality of individual pillars 3 are arranged at intervals on the exposed side of the hanging flexible filling bag 2;

[0046] c. Erection of the template 4 on the outside of the flexible filling bag 2 and relying on the single pillar 3;

[0047] d. Fill the flexible filling bag 2 with high-water material through the filling pipe until it is full;

[0048] e. After the high-water material is solidified, the template 4 and the single pillar 3 are removed to complete a row of filling barriers;

[0049] f. With the advancement of the coal mining face, when the advanc