Blowing sand backfill and grouting construction method of tunnel crossing coal mine goaf
A construction method and technology for goafs, which are applied in fillings, mining equipment, earth-moving drilling, etc., can solve the problem of water inrush, mud inrush and landslide, threatening the safety of construction workers, and tunnel excavation cannot be carried out normally, etc. problems, to achieve the effect of high structural safety requirements, reducing construction risks and saving material consumption
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[0030] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but should not be used to limit the scope of the present invention.
[0031] In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner ", "outside", "front end", "rear end", "head", "tail", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the inventi...
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