The server is under maintenance between 08:00 to 12:00 (GMT+08:00), and please visit later.
We apologize for any inconvenience caused
Login  | Sign Up  |  Oriprobe Inc. Feed
China/Asia On Demand
Journal Articles
Laws/Policies/Regulations
Companies/Products
Bookmark and Share
yong zuan kong shui li ya lie fa ce liang yan ti tian ran ying li
Author(s): 
Pages: 56+53
Year: Issue:  6
Journal: Geotechnical Investigation & Surveying

Keyword:  水力压裂法岩体钻孔应变计高压水流应力大小压裂压力裂隙面最小主应力测量天然应力场;
Abstract: <正> 钻孔水力压裂法是一种测量岩体天然应力的新方法。其法是在钻孔所需测定应力的深度的试段中,用上、下两个能承受高压的橡皮栓塞堵塞该试段,然后用高压水泵向试段内泵入高压水流。当压力升高到某一临界值(即压裂压力P_σ)时,试段孔壁岩体就被胀裂,并产生一些拉断裂隙。这种拉断裂隙是沿着阻力最小方向发生和发展的,当试段孔壁被压裂,出现拉断裂隙时,停止泵入高压水流,这时,试段中拉断裂隙面上作用的压力与高压泵的压力保持一个闭合回路,这时
Related Articles
No related articles found