Filling wall body capable of protecting laneway through soft yielding in non-chain-pillar filling mining and construction method thereof
A technology for filling walls and construction methods, which is applied to fillings, mining equipment, earthwork drilling and mining, etc. It can solve the problems of poor yielding effect, difficult construction, complex structure, etc., and achieve slow resistance increase, simple construction, and low The effect of labor intensity
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[0048] (2) Example 2
[0049] Step 1: Calculate the height h of the inflatable organic foam filling wall 1 And the height of the paste-like filling body h 2 :
[0050]
[0051]
[0052] Where: h 1 -Predicted value of roof subsidence, in m;
[0053] h 2 -Predicted value of roof subsidence, in m;
[0054] l-Width of reserved lane, in m;
[0055] L- the span of the old roof beam, in m;
[0056] h- mining height, unit m;
[0057] Step 2: After the coal mining face is mined, the roadway is retained according to the existing roadway filling method, and the double-row metal hinged roof beam (1) and the single hydraulic prop (5) are used to strengthen the roof support beside the roadway, and the inner side of the single hydraulic prop Install the filling template (4) and install the curtain (2) inside the template;
[0058] Step 3: Fill the inner side of the curtain with a paste-like filling material (6) to height h 2 , The paste-like filling wall is composed of a mixture of water, cement, fly as...
Example Embodiment
[0061] (3) Example 3
[0062] Step 1: Calculate the height h of the inflatable organic foam filling wall 1 And the height of the paste-like filling body h 2 :
[0063]
[0064]
[0065] Where: h 1 -Predicted value of roof subsidence, in m;
[0066] h 2 -Predicted value of roof subsidence, in m;
[0067] l-Width of reserved lane, in m;
[0068] L- the span of the old roof beam, in m;
[0069] h- mining height, unit m;
[0070] Step 2: After the coal mining face is mined, the roadway is retained according to the existing roadway filling method, and the double-row metal hinged roof beam (1) and the single hydraulic prop (5) are used to strengthen the roof support beside the roadway, and the inner side of the single hydraulic prop Install the filling template (4) and install the curtain (2) inside the template;
[0071] Step 3: Fill the inner side of the curtain with a paste-like filling material (6) to height h 2 , The paste-like filling wall is composed of a mixture of water, cement, fly as...
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