Mold bag filling method for drift type mining
A mold bag and approach technology, which is applied in fillings, mining equipment, earth-moving drilling, etc., can solve the problems of increasing the exposed area of the roof, poor stability of the filling body, affecting production efficiency, etc., so as to shorten the filling preparation time and cost. Low and cost saving effect of retaining wall
Inactive Publication Date: 2019-06-21
CHANGCHUN GOLD RES INST
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Problems solved by technology
[0002] The approach-filling mining method can adapt to various complex ore bodies, and can maximize the recovery rate. It also has the advantages of short exposure time in the goaf and safe mining. However, in the application process of this method, the following problems are faced. First, There is a phenomenon that the filling is not connected to the roof or the roofing rate is too low in the mining approach stope, resulting in poor stability of the filling body and an increase in the actual exposed area of the roof. The impact of dynamics leads to the partial side and collapse of the filling body; secondly, each approach requires the construction of filling retaining walls, which not only affects production efficiency, but also increases production costs
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[0018] The specific embodiment of the present invention will be further described below in conjunction with the accompanying drawings and implementation examples. A method for filling mold bags for road mining includes the following steps:
[0019] Step 1, the length of the filling route 2 is 30m, and a plurality of filling mold bag fixing devices, that is, fixing hooks 11, are constructed on the top plate and two sides of the waiting filling route 2 after the mining is completed, and a plurality of rings 7 are fixed on the outer side of the filling mold bag 1 , the ring 7 is hooked on the fixed hook 11, so that the filling mold bag 1 is fixed in the to-be-filled route 2, and the entire to-be-filled route 2 is filled. The size and shape of the filling mold bag 1 depends on the 2 to determine the specific circumstances;
[0020] Step 2, the top of the filling mold bag 1 is provided with a filling port and an overflow port, the filling port and the overflow port are respectively...
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The invention discloses a mold bag filling method in a drift type mining method. Filling mold bags are laid in a mining drift after backstopping is finished; filling slurry is injected into the filling mold bags through filling holes in the tops of the mold bags; after the filling mold bags are filled with the filling slurry; and the mold bags make tightly contact with a mining drift top plate anda surrounding rock. the problem that the roof-contacted filling of a drift mining method is difficult is solved; a filling retaining wall does not need to be constructed during filling operation, only a steel support needs to be fixed at a drift opening, the filling preparation time is shortened, the cost of the retaining wall is reduced, the method is simple in technological process and convenient to operate, the filling efficiency can be effectively improved, the filling mold bags are low in cost and short in manufacturing process, and safe, economical and efficient production operation ofthe drift type mining method can be achieved.
Description
technical field [0001] The invention relates to the technical field of underground mining in mines, in particular to a mold bag filling method for approach mining. Background technique [0002] The approach filling mining method can adapt to various complex ore bodies, and can maximize the recovery rate. It also has the advantages of short exposure time of the goaf and safe mining. However, in the application process of this method, the following problems are faced. First, There is a phenomenon that the filling does not connect to the roof or the roofing rate is too low in the mining approach stope, resulting in poor stability of the filling body and an increase in the actual exposed area of the roof. The impact of dynamics leads to sideways and collapse of the filling body; secondly, each approach requires the construction of a filling retaining wall, which not only affects production efficiency, but also increases production costs. Contents of the invention [0003] I...
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Inventor 侯俊程文文闵忠鹏张小瑞赵龙
Owner CHANGCHUN GOLD RES INST