粗粒土垂直渗透变形仪LBTDLY1.docx
《粗粒土垂直渗透变形仪LBTDLY1.docx》由会员分享,可在线阅读,更多相关《粗粒土垂直渗透变形仪LBTDLY1.docx(25页珍藏版)》请在冰豆网上搜索。
粗粒土垂直渗透变形仪LBTDLY1
粗粒土垂直渗透变形仪LBT-DLY-1
粗粒土垂直渗透变形仪LBT-DLY-1
二、粗粒土垂直渗透变形仪技术参数
1、供水箱规格:
直径510㎜、高度500㎜
4、量筒:
100ML
6整机重量:
三、粗粒土垂直渗透变形仪使用方法:
1将下进水口与供水管相连接,使仪器充水,检查仪
器的各部件是否有堵塞和漏水等。
检查完毕,降低供水箱,使仪器中水位与下
34、试样宜分3~5层装填,每层的级配应相同。
装填分层厚度:
砂类土可为2㎝~3㎝;砾类土可为试样最大粒径的1.5~2倍。
必要时可酌加相当于试样质量1%~2%的水,拌和均匀后在进行装填。
5、将每份称好的试样均匀分层装入量筒,用击实锤击实并达到要求的高度,对于风化石渣或者击碎的土料可采用振动加密法。
6、试样在仪器中采用毛细管饱和法进行饱和。
调节供水箱高度,使供水箱水位略高于试样底面,在缓慢提升供水箱,每提升1㎝,应稳定10min后在提升供水箱。
随试样水位的上升,接通相应的测压管,待水溢出出水口为止,使试样充分浸润饱和。
此时各测压管水位应与出水口水位齐平。
7根据试样中的细粒含量,初步判断试样渗透变形的破坏形式:
当为管涌破坏形式,渗透初始坡降宜为0.02~0.03,递增值为0.05,0.10,0.15,0.20,0.30,0.40,0.50,
0.70,1.00,1.50,2.00,以后按1.00~2.00递增,当接近临界坡降时,渗透坡降递增值应酌量减小;当为流土破坏形式时,数值可适当增大。
、按上述规定逐次升高水头。
每次升高水头后,应使出水口水流出流30min~60min,待水流稳定后,测记各测压管水位并用量筒测读渗水量。
每级水头下测读次数不应少于三次,每次测读时间间隔视渗水量大小而定,宜为10min~
20min,同时测读进出口水的温度。
当三次测读的水位及渗水量基本稳定,即可提升至下一级水头。
取读数接近的三次平均值作为试验值。
对非管涌土,时间可适当延长。
9、应观察试验过程中出现的各种现象,如出水的浑浊程度,气泡冒出,细颗粒跳动、移动或被水流带出,土体悬浮,渗流量及测压管水位的变化等,并进行详细描述。
当出现临界坡降或破坏坡降前兆时,应及时调整坡降递增值。
10、当试样发生破坏或水头无法再继续增加时,即可结束试验。
对于只需进行渗透系数测定的渗透试验,可在出现临界坡降后,继续施加1~2级水头后结束试验。
11、试验结束后,关进水口,吸取试样上余水,观察试样变化,根据需要量测试样试后高度。
加有荷载的试样应及时卸荷并观测回弹情况,卸下顶盖,吸取试样上余水,卸除上透水板。
放尽仪器余水,拆除试样。
根据需要,测试样试12、在进行试验的同时,宜绘制渗透坡降与渗流速度关系曲线。
以渗透坡降为纵坐标,以渗流速度为横坐标,绘制在双对数坐标纸上,必要时还可绘制渗流速度与时间关系曲线。
根据曲线变化,及时调整每级水头的持续时间和水头的级差。
四、粗粒土垂直渗透变形仪试验成果整理应符合DL/T5356-2006要求。
其他水利水电粗粒土试验仪器
粗粒土振动台试验装置
粗粒土垂直渗透变形仪LBT-DLY-1
10.0pt;border-top:
solidwindowtext1.0pt;
border-left:
none;border-bottom:
none;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
23.85pt">
195.0pt;border-top:
solidwindowtext1.0pt;
border-left:
none;border-bottom:
none;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
23.85pt">
粗粒土水平渗透变形仪
81.0pt;border-top:
solidwindowtext1.0pt;
border-left:
none;border-bottom:
none;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
23.85pt">
LBT-DLY-2
191.0pt;border-top:
solidwindowtext1.0pt;
border-left:
none;border-bottom:
none;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
23.85pt">
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土三轴剪切测定仪
LBT-DLY-3
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土直接剪切试验仪
LBT-DLY-4
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土现场密度试验仪
LBT-DLY-5
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土现场渗透试验仪
LBT-DLY-6
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土现场渗透变形仪
LBT-DLY-7
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土现场直接剪切试验仪
LBT-DLY-8
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土现场荷载试验仪
LBT-DLY-9
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土表面振动压实仪
LBT-DLY-11
水利水电标准
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土振动台法试验装置
LBT-DLY-12
铁路、水利标准
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
粗粒土振动台法试验装置
LBT-DLY-13
公路标准
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
81.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
191.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">
水工密封材料流动仪
LBT-DLY-10
195.0pt;border-top:
none;border-left:
none;border-bottom:
solidwindowtext1.0pt;border-right:
solidwindowtext1.0pt;
padding:
0cm0cm0cm0cm;height:
8.65pt">