Anti-blocking device for muck slope drainage pipe and construction method

Abstract

The invention provides an anti-blocking device for a muck slope drainage pipe. The device comprises a drainage pipe and a water filter, a plurality of drainage holes are formed in the pipe wall of thedrainage pipe; a filter screen plate is arranged at one end of the water filter; a pipe cap sleeve is arranged at the other end of the water filter; the pipe cap sleeve is connected with a filter screen; a water inlet is formed in one end of the drainage pipe; the pipe cap sleeve is arranged at the water inlet in a sleeving manner; the water filter is accommodated in the drainage pipe; a reversefiltering layer is arranged in the water filter; the reverse filtering layer comprises a plurality of filtering layers, each filtering layer comprises particle contents and geotextile wrapping the particle contents, the particle sizes of the particle contents of the filtering layers are gradually increased in the water flow direction of the drainage pipe, and the hole diameters of the filtering net pieces are smaller than the particle sizes of the particle contents of the adjacent filtering layers. The invention has the beneficial effects that the pressure resistance of the water inlet end ofthe drainage pipe is improved, and the water inlet end of the drainage pipe is prevented from being extruded and damaged to cause drain pipe blockage.

Description

technical field [0001] The invention relates to the technical field of slope drainage, in particular to an anti-clogging device and a construction method for muck slope drainage pipes. Background technique [0002] In slope treatment projects, it is usually necessary to set up drainage pipes to drain the slope, but as time goes by, soil particles and other debris will enter the drainage pipes, which will block the drainage pipes and affect the drainage effect. In particular, there is a large amount of building brick slag mixed in the muck slope, which has large pores and good permeability. If the accumulated water cannot be discharged in time, the groundwater level will rise and the pore water pressure will increase, which will easily cause slope failure. stable or even collapsed. At the same time, the muck slope is filled with muck layer by layer, which has obvious layering characteristics. The physical and mechanical properties of each layer of soil are different, such as...

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Problems solved by technology

[0003] At present, the usual way to prevent the clogging of the drainage pipe in the prevention and control project of the muck slope is to install a reverse filter bag near the water inlet end of the drainage pipe, that is, to fill multiple layers of soil or gravel with different particle sizes along the direction of the water flow, and at the same time prevent Flow soil is produced due to the loss of soil particles, but this method requires on-site construction, the process is complicated, the construction period is prolonged, and more materials are required, resulting in a significant increase in cost

For the drainage pipes on the upper part of the muck slope, geotextiles are usually used to wrap the drainage pipes to prevent the drainage pipes from being blocked, but the geotextiles are easily damaged when the water flow is large, and the geotextiles are also easily corroded under long-term biochemical action damage, which in turn causes soil particles to enter the drainage pipe and cause the blockage of the drainage pipe, which cannot achieve a good drainage effect

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