borehole strainmeter

Using borehole strain data to forecast the Yanjin M5.1 Earthquake,Yunnan Province,on 22 July 2006;

使用钻孔应变测值预测2006年7月22日云南盐津5.1级地震

We also discovered at various borehole strain-meter stations tidal response(tidal factor) are separate and have orderly anisotropy.

中国数字地震观测网络"十五"计划期间,在全国布设约40台我国自主研发的YRY-4型分量式钻孔应变仪。

Since the setup of the high precision borehole strain at Wushi station in 1984,9 groups of earthquakes of magnitude 6 and above,16 times in all,have occurred within the range of 300 kilometers around Wushi station.

自1984年乌什架设高精度钻孔应变以来,乌什300km内发生了9组共16次6级地震,在这些地震前应变仪器记录到了异常。

For this reason,in this paper the bore hole strain seismograph is calibrated with the result from harmonically fitting or with the displacement measured by pendulum,then the stress corresponding coefficient of the bore hole strain can be derived and the resolution of wave eguation can be substituted approximately by the resolutio.

由于钻孔内外的介质模型的力学性能不能测定 ,不能用波动方程来解钻孔应变地震波。

The scale value, which is converted from the bore hole strain, by nse of the observed values in tidal frequency band of the bore hole strain and the elastic coefficients of the bore hole corescan can be used for coverting non tidal variation of the bore hole strain into variation of the non tidal stress of the same stratum.

利用钻孔应变观测值中潮汐频段部分和钻孔岩芯的弹性系数 ,将钻孔应变换算为地层应力的格值 ,用此格值可将钻孔应变的非潮汐变化换算成该地地层的非潮汐应力变化。

Study on the short time distortion anomaly of borehole volume strain in Qingdao

青岛钻孔体应变短时畸变分析

ANALYSES OF INTERFERENCE IN BORE-HOLE STRAIN AND TUNNEL-ROOM DEFORMATION OBSERVATIONS

钻孔应变观测与洞室形变观测的干扰分析

Conversion and application of 4-component borehole strainmeter data

四分量钻孔应变观测资料的换算和使用

Testing Precursory Wave before Strong Earthquakes Using Borehole Strain Data

用中国钻孔应变台网资料检验大震“前驱波”

IN-SITU CALIBRATION OF GUZA STATION'S 4-COMPONENT BOREHOLE STRAINMETER

姑咱台四分量钻孔应变观测的实地标定

OBSERVED STRAIN CHANGES FROM 4-COMPONENT BOREHOLE STRAINMETER NETWORK BEFORE 2008 WENCHUAN EARTHQUAKE

四分量钻孔应变台网汶川地震前的观测应变变化

Operation management of the borehole strain stations in Sichuan Province

四川前兆钻孔应变仪台站观测系统运行管理现状分析

The application of borehole inclinometer in the monitoring of accumulation body's strain

钻孔倾斜仪在某堆积体变形监测中的应用

Comparison between Grating Rosette and Strain Gage Rosette of Deformation Measuring in Hole-Drilling Method

钻孔法中光栅应变花与电阻应变花测量变形的比较

Analysis of the boring prime pile aberrance at the shallow part by low strain integrity testing

冲(钻)孔灌注桩浅部桩身畸变低应变法检测波形分析

The Research on Application of Using Power Test Techniques of High Strain to Test Large Diameter Borehole Dabbling Pile.;

大直径钻孔灌注桩高应变动力检测技术研究及推广应用

Application of Bit Water Way in HDD

水平定向钻进扩孔钻头水口应用分析

On application of DTH drill in drilling pile construction in karst developing areas

潜孔钻在岩溶发育地区钻孔桩施工中的应用

Research on the Principle and Design of Borehole Cast-in-place Pile and the Construction in Deep Excavation Next to Metro Station;

钻孔咬合桩受力变形规律及在地铁车站设计施工中的应用研究

Supporting the use of impact drilling electric drill. Drilling, hole spacing with hole depth should meet the design requirements.

（1）钻孔使用配套冲击电钻.钻孔时,孔洞间距与孔洞深度应满足设计要求.

Drilling method of pin hole: the pin hole shall be predrilled by supplier prior to hot dip galvanization.

销钉孔的钻法：销钉孔应为供应商在热镀锌预钻好。

Application of Wireless-while-drilling Technology on Large Diameter Directional Hole

无线随钻技术在大口径定向工程钻孔中的应用

Application of the XY-1 type core drilling machine to horizontal drilling

XY-1型岩芯钻机在水平钻孔施工中的应用

Application of Triangular Drilling Rod to Gas Drainage Borehole Drilling in Medium Soft Seam

三棱钻杆在中软煤层顺层瓦斯抽排钻孔的应用