Bucket descending blasting demolition construction method for flip bucket
A construction method and nose sill technology, which is applied in the field of blasting and demolition of the nose sill and sill lowering, can solve the problems of long construction period and difficulty in meeting the project construction period requirements
Active Publication Date: 2016-07-20
SINOHYDRO BUREAU 11 CO LTD
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Problems solved by technology
[0006] To sum up, due to the restriction of lifting equipment and cutting effect, the construction period of the above-mentioned traditional technical solution is very long and it is difficult to meet the construction period requirements of this project
Method used
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Embodiment Construction
[0056] Embodiments of the present invention will be described in detail below.
[0057] Construction method of the present invention specifically comprises the following steps:
[0058] (1) The open channel water at the outlet of the diversion tunnel is emptied
[0059] Stop the diversion tunnel before construction, empty the accumulated water in the open channel to below the demolition elevation, and use self-flow, pre-embedded drainage pipes and water pumps to drain the accumulated water in the diversion tunnel after the water level of the Centian River Reservoir drops to EL247m. The drainage time is controlled within 36 hours, and the accumulated water above the EL230 elevation in the diversion tunnel is drained by gravity, and the water below the EL230 is drained by pre-embedded drainage pipes and water pumps. According to the calculation of the construction drawings, the water storage below the diversion tunnel EL230 is about 22,900 m 3 . The above-mentioned EL247m mea...
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The invention discloses a bucket descending blasting demolition construction method for a lip bucket. The technical scheme provided by the invention is that the bucket descending blasting demolition construction method comprises the following steps of firstly, adopting a hydraulic wire saw to separate and cut according to demolition side lines given by a design drawing, separating a demolition part from a parent body, and completely cutting off reinforcing steel bars according to the designed demolition side lines during demolition; secondly, adopting a pneumatic drill to drill a part to be demolished, performing controlled blasting, and blasting a demolished body; comprehensively comparing progress, safety, quality and economy, and finally demolishing the part by adopting a wire saw cutting and controlled blasting combined mode. The bucket descending blasting demolition construction method disclosed by the invention has the advantages that local concrete of a complex structure is demolished by adopting the wire saw cutting and controlled blasting combined mode; and the bucket descending blasting demolition construction method is suitable for demolishing local reinforced concrete of the complex structure and a simple structure, and has high applicability in the aspects of engineering reform, extension, structural repair and the like.
Description
technical field [0001] The invention relates to a construction method for blasting and demolishing a nose sill and lowering a sill, and belongs to the technical field of blasting and demolition. Background technique [0002] At present, because the traditional static blasting agent is greatly affected by the external environment, the blasting effect is unstable. At present, there is no successful case of using static blasting agent to demolish large-volume reinforced concrete in China. Explosive-controlled blasting demolition technology is relatively mature at present, but since the project is only partially demolished and the parent body will also be used as a permanent building, it is difficult to predict the degree of damage to the parent body caused by blasting vibration. As a purely mechanical means of demolition, wire saw block cutting and demolition will basically not cause damage to the mother body. [0003] For example, the patent application number CN201210072272....
Claims
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IPC IPC(8): F42D3/02F42D1/00E04G23/08
CPCE04G23/08F42D1/00F42D3/02
Inventor 王秀明徐申飞乔红祥周沛徐超石源源
Owner SINOHYDRO BUREAU 11 CO LTD