Artificial retaining dam for coal mine underground reservoir and connecting method of artificial retaining dam and coal pillar dam bodies as well as surrounding rocks
A technology for underground reservoirs and retaining dams, which is applied in the direction of dams, arch dams, mining equipment, etc., can solve the problems of difficult groove construction and inconvenient control of grouting, and achieve the effect of improving anti-skid performance and strengthening connection
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[0032] The specific implementation manner of the present invention will be further described below in conjunction with the accompanying drawings.
[0033] Such as figure 1 As shown, the coal pillar dam body 2 is to protect the surface landform, ground buildings, structures and main shafts, prevent subsidence, separate ore fields, well fields, aquifers, fire areas and fracture zones, etc. Part of the ore body plays a supporting role and is located on the left and right sides of the auxiliary roadway 1. Surrounding Rock 3 (see image 3 ) is formed when the auxiliary roadway 1 is excavated, and is located on the upper and lower sides of the auxiliary roadway 1. Adjacent auxiliary roadways 1 are communicated through connecting roadways 11 . When the working face is mined, the goaf 4 is formed, and the overlying strata of the auxiliary roadway 1 cascades, and the auxiliary roadway 1 and the goaf 4 together form an underground reservoir. In the present invention, the coal pillar...
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