Pratoomkhuan Khongtiph <br/><br/>
Prediction versus actual response of rocks in excavation of underground cavern at Lam Ta Khong Pumped Storage Project 

 - Bangkok :  Asian Institute of Technology,  1998 
 - 261 leaves :  ill. 
 - Thesis ;  no. GE-97-23 .
 - Asian Institute of Technology.  Thesis ;  no. GE-97-23 .
<br/><br/> A thesis submitted in partial fulfillment of the requirements for the degree of Master of Science, School of Civil Engineering 
<br/><br/>Thesis (M.Sc.) - Asian Institute of Technology 
<br/><br/> The excavation and rock response of a large underground cavern (25 m x 49 m x  175 m in dimension) of the Lam Ta Khong Pumped Storage Project in siltstone and  sandstone was studied. The cavern was excavated with drill and blast and supported with  rock anchors, rockbolts, steel fiber reinforced shotcrete. Actual geology and rock  response during various stages of excavation was reviewed and compared with the  prediction. Comparison was made between rock mass quality classified according to  EPDC and RMR classifications. Predominant rock response consisted of slaking and  minor stress slabbing and loosening. Actual ground movement in roof and walls were  compared with the pre-construction and post-construction predicted by FEM and BEM  numerical analyses, and it was found that they were in good agreement.  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rock mechanics<br/>Lam Ta Khong Project<br/>Underground construction