| 摘要 |
The invention concerns mining engineering and may be used for isolation of wet ground of working from a mining zone. The method includes formation of a triangular profile cut along the contour of working and assembly of bulkhead from separate pieces. On the planes of the cut joint sealing inserts are fastened, wooden square and triangular elements with end parts that are sheared wedgewise in the form of the cut are installed, interelement moisture barriers are laid. The assembly of the bulkhead elements is completed with installation of square composite element into the cut; intracut and interelement joint sealing inserts are made of flexible material and/or solidifying sealant. In weakened, fractured, vulnerable to dissolution and other rock masses which do not secure sufficient mechanical reliability and are prone to filtration of water (brine) a cement screen around the bulkhead and/or reinforced concrete gantry between the bulkhead body and rock mass are additionally erected in the adjacent strata. If calculated values of hydrostatic head exceed the values allowed from the view point of strength and leakproofness of the bulkhead, as well as in order to reduce filtration into the protected zone of opening an additionalself-sealing damp-proof bulkhead is erected which fills the space between bulkheads with reinforcing and waterproof material, for example, concrete. The proposed method allows to raise efficiency of damp-proofing of workings. |
