第9期 张丽华等：基于改进泊松复合小波模型的复合地基全过程沉降预测 .873. Prediction of composite foundation settlement process based on a modified Poisson- superposition wavelet model ZHANG Lihua2,CAI Meifeng?) 1)Civil and Environmental Engineering School,University of Science and Technology Beijing.Beijing 100083.China 2)Department of Architectural Engineering.North China Institute of Science and Technology,Beijing 101601.China ABSTRACI The model and method used to predict a composite foundation settlement process were studied. The characteristics of the modified Poisson model and its applicability were analyzed and a modified Poisson su- perposition wavelet neural net model was proposed.Combined with practical observation data,the CFG pile composite foundation settlement process was analyzed and predicted.A comparison of the obtained theoretical re- sults with those from the modified Poisson model was made.It is shown that the suggested model has better ap- plicability and enables to predict with a higher accuracy,whose absolute error is less than 1mm. KEY WORDS composite foundation:complete process settlement;Poisson model;wavelet model (上接第862页) Grade and reserve calculation in a visual simulation system for geological and mining engineering LI Cuiping,LI Zhongxue,HAO Xiuqiang,HAO Jinhui State Key Laboratory of Chinese Ministry of Education for High-Efficient Mining and Safety of Metal Mines.University of Science and Technology Beijing.Beijing 100083.China ABSTRACI Through the process of grade and reserve calculation,a method of dealing with voxel for visualiza- tion technology and its applications in an integrated simulation system were provided for deposits.First,in order to construct regular volume data which can satisfy the needs,original sampling data were pretreated.Second,by the means of three interpolation methods,i.e.Thiessen polygon method,distance power inverse ratio method, Kriging method,users could choose an appropriate calculation method according to the fact of mines.Then, based on regular voxel information under different spatial interpolation methods,the grade and reserve were cal- culated in an appointed area of orebody. KEY WORDS geological and mining engineering:visual simulation:spatial interpolation;voxel;grade;re- servePrediction of composite foundation settlement process based on a modified Poisson￾superposition wavelet model ZHA NG L ihua 1‚2）‚CAI Meifeng 2） 1） Civil and Environmental Engineering School‚University of Science and Technology Beijing‚Beijing100083‚China 2） Department of Architectural Engineering‚North China Institute of Science and Technology‚Beijing101601‚China ABSTRACT The model and method used to predict a composite foundation settlement process were studied． The characteristics of the modified Poisson model and its applicability were analyzed and a modified Poisson-su￾perposition wavelet neural net model was proposed．Combined with practical observation data‚the CFG pile composite foundation settlement process was analyzed and predicted．A comparison of the obtained theoretical re￾sults with those from the modified Poisson model was made．It is shown that the suggested model has better ap￾plicability and enables to predict with a higher accuracy‚whose absolute error is less than1mm． KEY WORDS composite foundation；complete process settlement；Poisson model；wavelet model （上接第862页） Grade and reserve calculation in a visual simulation system for geological and mining engineering LI Cuiping‚LI Zhongxue‚HAO Xiuqiang‚HAO Jinhui State Key Laboratory of Chinese Ministry of Education for High-Efficient Mining and Safety of Metal Mines‚University of Science and Technology Beijing‚Beijing100083‚China ABSTRACT Through the process of grade and reserve calculation‚a method of dealing with voxel for visualiza￾tion technology and its applications in an integrated simulation system were provided for deposits．First‚in order to construct regular volume data which can satisfy the needs‚original sampling data were pretreated．Second‚by the means of three interpolation methods‚i．e．Thiessen polygon method‚distance power inverse ratio method‚ Kriging method‚users could choose an appropriate calculation method according to the fact of mines．Then‚ based on regular voxel information under different spatial interpolation methods‚the grade and reserve were cal￾culated in an appointed area of orebody． KEY WORDS geological and mining engineering；visual simulation；spatial interpolation；voxel；grade；re￾serve 第9期 张丽华等： 基于改进泊松－复合小波模型的复合地基全过程沉降预测 ·873·