Southwest Jiaotong University

Oriental (luzhou) Agrochemicals Co., Ltd.

Tao Jin

Bangchi Chen

Zhongyuan Wang

Yinwei Sun

Ruijie Zheng

Xurong He

Guanglin Huang

Chuanjie Xi

Xiewen Hu

Song Xue

Liming Zhao

Xiangbin Yang

Mei Han

Disclosed herein is a method for preparing a 2-arylmalonic acid derivative. In this method, a cyclohexadiene compound is used as a raw material, and sequentially undergoes an isomerization reaction, a halogenation reaction in the presence of a halogenating agent and a dehydrohalogenation-aromatization reaction to obtain a 2-arylmalonic acid derivative (3). An intermediate for preparing the 2-arylmalonic acid derivative (3) and use of the intermediate are also disclosed.

Method for preparing 2-arylmalonic acid derivative and intermediate, and use thereof

A portable soil body in-situ shear test device includes: an active force system arranged externally, a passive shear system and an electromagnetic loading system arranged internally, and a ring knife system arranged at a bottom. Compared with the conventional in-situ soil shear strength test device and test method, the present invention is convenient to install and carry as well as simple to operate, and has strong applicability. The present invention is suitable for layered soils with large cross-plate shear test errors, and for soils with different consolidation degrees at various sites and various terrains. A test method adopting the device can simulate the shear strength of the soil mass under different overburden loads without disturbing the mechanical properties of the in-situ soil mass, which has high promotion value in the test of in-situ soil shear strength.

Portable soil mass in-situ shear test device and test method thereof

Growing community of inventors

Sichuan, China

Tao Jin