Formation method of straw solidifying and blow-filling sludge pile

Abstract

The invention relates to a formation method of a straw solidifying and blow-filling sludge pile. The method comprises the steps of 1) downwards vertically inserting a bottom cover of a hollow metal pipe with the bottom cover into sludge, filling straws into the hollow metal pipe, and drawing out the hollow metal pipe from the sludge to enable the straws to form lengthways-arranged straw draining body in the sludge; 2) arranging a transverse draining body in the sludge; 3) paving a layer of sealing films on the surface of the sludge, and then pre-pressing in vacuum and solidifying; 4) inserting a hollow metal grouting pipe into each straw draining body, pumping solidifying material agitating mortar into each hollow metal grouting pipe until the solidifying material agitating mortar overflows out of a straw pile, and then drawing out each hollow metal grouting pipe from each straw draining body to form the sludge pile. According to the method, the vertical straw draining bodies for solidifying and blowing-filling sludge are utilized and grouted to form a pile body, so that the blow-filling sludge bearing capacity can be further improved after the solidifying and blowing-filling of the sludge, and the purpose of reinforcing a blow-filling sludge foundation is achieved.

Description

technical field [0001] The invention relates to a method for forming a mud pile, which belongs to the technical field of water conservancy and waterway engineering. Background technique [0002] Crop straw is one of the main wastes in agricultural production. At present, the annual output of straw in agricultural production in the world is 100 billion to 200 billion tons. China has nearly 600 million tons of straw every year, but less than 20 million tons are used, about 97% of the straw is burned, piled up and abandoned, which has caused great damage to the environment. [0003] According to reports, in recent years, nearly half of my country's land has been covered by smog, of which 104 cities are heavily polluted, and an important cause of smog weather is related to the burning of rural straw. It can be seen that solving the problem of straw disposal is an effective measure to alleviate environmental pollution. In order to dispose of straw reasonably and effectively and...

AI Technical Summary

Problems solved by technology

However, when straw is used as the vertical drainage body, the straw cannot be pulled out after treatment, and the straw that cannot be pulled out is not only loose, but also easy to corrode, so the bearing capacity of the foundation after vacuum treatment is reduced

[0008] The search found that the Chinese patent with the patent application number 201110115302.X and the title "A Wheat Straw Reinforced Saline Soil and Its Solidification Method" discloses that "the fiber reinforced material wheat straw is added to the saline soil, and at the same time the Lime, wheat straw mass reinforcement rate is 0.15-0.45%, lime mass content is 5-10%", this patent uses straw to reinforce saline soil, but the above-mentioned patent is not about straw as vertical drainage Vacuum consolidation treatment of high water content dredging sludge and then grouting treatment to achieve the purpose of reinforcement

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