Excavator and sand dredger
Patent Information
- Authority / Receiving Office
- CN ยท China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- ็ๆขๅ
- Publication Date
- 2010-06-09
- Estimated Expiration
- Not applicable ยท inactive patent
Smart Images
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Abstract
Description
technical field
[0001] An excavator and a sand dredging ship of the present invention relate to underwater mining of sand and gravel, which is called "boat mining process" in the industry, and also called "water mining". Background technique
[0002] "River Sand Mining and Management" book (the first edition in September 2006 of China Water Conservancy and Hydropower Press, edited by Wang Jinsheng, page 62 to page 65) has the following narrations to river channel sand mining and mechanical equipment. The author believes that river sandstone is the basic material that constitutes the river bed, and sand mining in the river can be used for dredging and filling foundations such as repairing embankments, improving river courses and waterways, intake and drainage outlets, soil borrowing for land reclamation, and operating sand for construction. Stone, panning metal or non-metallic substances and other purposes. According to whether the sand mining operation involves water, it ca...