A comprehensive compaction method for land filling in loess hilly and gully areas

Abstract

The invention discloses a comprehensive compaction filling method for reclaiming lands in loess hilly-gully regions by filling. The method herein comprises the steps of I, cleaning superficial surfaceof a construction area; II, performing dynamic compaction on intact collapsible loess base at the bottom of an intact gully; III, performing compaction filling on the lower portion of a filling region filler; IV, performing compaction filling on the upper middle of the filling region filler; V, performing compaction filling on a filling-digging junction; VI, leveling an engineering land-reclaiming plane, and compensating earth. Different construction schemes are taken for the different heights of the filling region filler; key factors for local weak planes at the different heights of the filling region filler are comprehensively controlled; response can be precisely provided to the accident-prone area during the filling and compaction for reclaiming lands in the loess hilly-gully regionsby filling; the quality of complex land reclamation projects by filling and land utilization safety are effectively guaranteed, and significant economic and social benefits are attained.

Description

technical field [0001] The invention belongs to the technical field of earth filling compaction and filling, and in particular relates to a comprehensive compaction filling method for earth filling in loess hilly gully areas. Background technique [0002] With the rapid development of my country's economy and the rapid advancement of urbanization, many areas have experienced a shortage of construction land. Under the premise of moderate development, filling projects such as "cutting mountains and filling ditches" and "rectifying ditches to make land" have become one of the important decisions and development directions for the development, utilization and reserve protection of my country's land resources. Due to the low natural water content of the filler in the high fill project in the loess area, it is difficult to fully compact it. In addition to the "water-sensitive characteristics" of the loess, the entire high fill project in the loess has the problem of collapsible lo...

AI Technical Summary

Problems solved by technology

Due to the low natural water content of the filler in the high fill project in the loess area, it is difficult to fully compact it. In addition to the "water-sensitive characteristics" of the loess, the entire high fill project in the loess has the problem of collapsible loess foundation treatment. The problems of building settlement and deformation, the comprehensive impact of environmental water, etc., will lead to large-scale settlement of the building ground, erosion and scour of the building ground, obvious differential settlement in the transition zone between filling and excavation, cracks and infiltration channels in local weak areas, etc. , thus affecting the quality, safety and practicability of the project

[0003] Most of the previous construction of loess high fill projects only focused on the water content control and compaction treatment of the main body of the construction "fill body". Insufficient attention should be paid to the slope joint slope surface, the overlapping surface of the bid section construction, etc. After the completion of the project, it is easy to cause the original foundation to wet and settle, and it is easy to form an artificial rainwater infiltration channel in the weak junction area, resulting in the overall instability of the project

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