RPW (ranked position weight) process for treating high fill slope

Abstract

The invention discloses an RPW (ranked position weight) process for treating a high fill slope. According to the RPW process, the problem of surface layer infiltration of atmospheric rainfall in a fill slope is solved by using a surface soil replacement, rolling and compaction technology, the problem of compaction degree of earth fill in a critical infiltration depth range of the atmospheric rainfall is solved by using a middle slope body pressure grouting technology, and the problem of stability of earth fill outside the critical infiltration depth range of the atmospheric rainfall is solved by using a lower slope face compaction and foot protection technology. The invention provides a three-dimensional combined treatment technique for reinforcing the fill slope by using the surface soil replacement, rolling and compaction, the middle slope body pressure grouting and the lower slope face compaction and foot protection from top to bottom with the critical infiltration depth as a pointcut based on the treatment idea of a cataclysm space partition aiming at the particularity of the fill slope and the basic reason for instability of the fill slope. The RPW process has the advantages that an atmospheric rainfall surface layer infiltration passage is obstructed by using the surface soil replacement, rolling and compaction technology, the problem of stability of a shallow layer of the fill slope is solved, the compaction degree of the fill in the critical infiltration depth range of the atmospheric rainfall is enhanced by using the middle slope body pressure grouting technology, and the problem of instability of a deep layer of the fill slope is solved. The RPW process has high pertinence and high reliability based on the treatment idea of the cataclysm space partition, and the influence on the fill slope by the atmospheric rainfall is solved substantially. Meanwhile, the process has the advantages of simple construction process, short construction period, low manufacturing cost and the like, and is a new fill slope treatment technology which is worthy of being promoted and applied.

Description

technical field [0001] The technology of the present invention relates to a treatment technology for filling slopes, specifically a three-dimensional combination of top-down replacement and rolling compaction, slope pressure grouting and slope surface tamping toe protection for joint treatment of filling slopes Governance technology (RPW method). Background technique [0002] When building new projects in mountainous and hilly areas, a large number of high and steep fill slopes will be formed to meet the needs of site leveling. Fill slopes have complex material components and loose structures, and are easily unstable under the action of adverse factors such as rainfall or earthquakes, resulting in huge economic losses. When a single anti-sliding support measure (such as anti-sliding piles, anchor piles, etc.) is used for treatment, due to the low shear strength and poor self-stabilization ability of the fill, anti-sliding piles with large cross-sections or multiple anti-sli...

AI Technical Summary

Problems solved by technology

The material composition of the fill slope is complex, the structure is loose, and it is very easy to lose stability under the action of unfavorable factors such as rainfall or earthquakes, causing huge economic losses

When a single anti-sliding support measure (such as anti-sliding piles, anchor piles, etc.) is used for treatment, due to the low shear strength and poor self-stabilization ability of the fill, anti-sliding piles with large cross-sections or multiple anti-sliding piles are often required to meet the design safety standards. Row of anti-slide piles, the construction cost is high, the period is long, and it is difficult to form the soil arch effect between the piles, and the soil between the piles is easy to squeeze out, causing the failure of the treatment project

When a single anchoring measure (such as prestressed anchor cable, lattice anchor cable, etc.) is used for treatment, due to the low bond strength between the fill and the anchor, long prestressed anchor cables with large diameters are often required to meet the design safety standards. The construction cost is high, the construction process is complicated, and when the content of broken rocks in the filling is high, it is difficult to form holes and the prestress is easy to lose

It can be seen that the construction process of traditional treatment and reinforcement measures is complicated, the cost is high, the period is long, and the technical reliability is not high, so it is difficult to fundamentally solve the problem of permanent stability of the fill slope. Establish a governance system for this type of slope from the perspective of its instability mechanism

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