农机化研究2017，Vol.39Issue(11)：153-157,5.
深松深度对土壤扰动影响的仿真与试验研究
Distinct Element Method Simulation and Experimental Research of Subsoiling Depth on Soil Disturbance
摘要
Abstract
Subsoiling depth is a key evaluation indicator of subsoiling operation, which produces an important impact on soil disturbance.In this paper, with chisel subsoiler as a research object, distinct element method simulation and soil bin experiment method was used to study the influence of subsoiling depth on soil disturbance from width of soil pit profile, height of soil ridge profile, soil volume expansivity soil disturbance coefficient and soil surface roughness.The results showed that: ①Soil disturbance profile curve of experiment was consistent with the soil disturbance profile curve of simulation, width of soil pit profile and height of soil ridge profile increased gradually with the increasing subsoiling depth;②When subsoiling depth was increasing, soil volume expansivity decreased, but soil disturbance coefficient showed a increasing trend, and the simulation results agreed well with the experimental results;③Due to increasing subsoiling depth, soil surface roughness was on the increase, and experiment results and simulation results presented on trends in consistent.This study can provide decision basis for further understanding of soil disturbance process under subsoiling.关键词
深松铲/深度/土壤扰动/离散元仿真/土槽试验Key words
subsoiler/depth/soil disturbance/DEM simulation/soil bin experiment分类
农业科技引用本文复制引用
李伟,张帅磊,黄玉祥,朱瑞祥..深松深度对土壤扰动影响的仿真与试验研究[J].农机化研究,2017,39(11):153-157,5.基金项目
陕西省科技攻关项目(2013K02-11) （2013K02-11）
杨凌示范区科技计划项目(2014NY-29) （2014NY-29）
西北农林科技大学重点项目(Z101021501) （Z101021501）
