Hainan University

Lu Chen

Songmei Yang

Xiantao Zha

Yiren Qing

Wenbo Liu

Zhixin Wang

Hongshuo Zhang

Ming Xiong

Jianjian Zhan

Jun Hu

Lin Jia

Hui Zeng

A combine harvester for seed production and multiplication of grains with automatic cleaning function includes a machine body. The machine body includes a header for harvesting grain plants, and a cleaning device mounted on the header for cleaning the header. The cleaning device includes a controller connected to both a blowing mechanism and a material collecting box mechanism via signals. The blowing mechanism is employed to allow for automatic cleaning of the header without the need to shut down the machine; and seeds and other residues blown out during the cleaning can be recovered through the material collecting box mechanism, avoiding waste.

Combine harvester for seed production and multiplication of grains with automatic cleaning function

An optimization method of shield tunnel starting end reinforcement solution, which specifically includes the following steps: acquiring shield tunnel engineering data and temperature variation curves of thermometer holes; constructing a numerical model with thermal convection and a hydro-thermal coupling numerical model respectively according to the shield tunnel engineering data, wherein a first temperature variation curve and a second temperature variation curve can be obtained after carrying out numerical simulations on the above two models; the influence of seepage on the development law of a temperature field can be obtained by comparing and analyzing the temperature variation curves of the thermometer holes with the first and the second temperature variation curves; and finally the existing freezing solution of the shield tunnel is optimized according to the influence of the seepage on the development law of the temperature field, to ensure safe use of the shield tunnel.

Optimization method of shield tunnel starting end reinforcement solution

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Hainan, China

Lu Chen