In this paper, a testing method which analyzes effect of alkalinity of hardened cement pastes on soil s is put forward, and layer soil sampler is designed.

Under the soft soil geotome,the controlled condition,may use during the engineering geology exploration,this article elaborated the soft soil geotome\'s technical parameter and the structural feature,the soft soil geotome applies in the Qitai River Training college synthesizes the building and the library building,has made the good progress.

Theoretical analysis of disturbance of soils caused by penetration of soil samplers

Some soil samplers which are developed by us are introduced in this paper, and the shape of seord in soil sampler is improved, and sampling process is discussed.

Design of multi-segment in situ soil sampler testing bulk density;

Knowledge discovery and decision rules are applied to realize the feature layered extraction,based on the knowledge base,comprised by both spectral and geo-information,such as altitude,texture,geometry,mined from the new remote sensing data,old land use map and auxiliary information,DEM and slope map.