Side-supporting roadway forming method by pre-digging guide cavern and filling with artificial side wall for secondary use
A technology of roadside support and secondary reuse, which is applied in fillings, underground chambers, earthwork drilling, etc. The effect of stable, small section shrinkage and fast lane formation
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[0044] The present invention will be described in further detail below with reference to the accompanying drawings.
[0045] Such as Figure 1-9 As shown, the pre-excavation guide tunnel of the present invention is filled with artificial side and the secondary reuse roadside support roadway forming method is:
[0046] The first step: excavation of the first working face and the lower mining roadway 5a, 5b
[0047] Step 1.1: Pre-excavation of mining roadway guide tunnel 1 under the first working face
[0048] Such as figure 1 and figure 2 As shown, before the excavation of the mining roadway 5b under the first working face, firstly, at the lower side of the mining roadway 5b under the first working face, excavate a 2m-wide mining roadway guide tunnel 1 under the first working face. The leading tunnel 1 of the mining roadway is equal to the height and length of the mining roadway 5b under the first working face, and temporary support is used; the temporary support is determ...
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