CN103088804A - Injection method for static sounding probe rod - Google Patents
Injection method for static sounding probe rod Download PDFInfo
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- CN103088804A CN103088804A CN2013100495103A CN201310049510A CN103088804A CN 103088804 A CN103088804 A CN 103088804A CN 2013100495103 A CN2013100495103 A CN 2013100495103A CN 201310049510 A CN201310049510 A CN 201310049510A CN 103088804 A CN103088804 A CN 103088804A
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- feeler lever
- injection
- angle
- static sounding
- probe rod
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- 238000002347 injection Methods 0.000 title claims abstract description 80
- 239000007924 injection Substances 0.000 title claims abstract description 80
- 239000000523 sample Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000003068 static effect Effects 0.000 title claims abstract description 23
- 239000002689 soil Substances 0.000 claims description 13
- 230000035515 penetration Effects 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000003467 diminishing effect Effects 0.000 claims description 2
- 238000012360 testing method Methods 0.000 abstract description 10
- 238000011835 investigation Methods 0.000 abstract description 4
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 230000001681 protective effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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Abstract
The invention belongs to the field of geotechnical engineering investigation in-situ tests and particularly relates to an injection method for a static sounding probe rod. The injection method for the static sounding probe rod is characterized in that after the probe rod is injected into a static sounding hole at an angle smaller than 0.3 degree, injection is stopped every time the probe rod is injected at a center distance. The probe rod conducts clockwise rotation through a pipe wrench. Angle data of a probe is observed. When the trend that the angle data becomes small occurs, rotation and continuous injection of the probe rod is stopped when the angle data is the smallest; and when the trend that the angle data becomes large occurs, the probe rod continues to rotate along the clockwise direction and continues to be injected after returning to an original position. The injection method for the static sounding probe rod has the advantages of improving perpendicularity of the static sounding probe rod, improving the injection depth of the probe rod at one time as much as possible under restriction of permitted inclined degree of the probe rod and without adoption of traditional means of placing the guide protective sleeve downwards to improve the perpendicularity of the of the probe rod and reducing working intensity of static sounding field operation.
Description
Technical field
The invention belongs to geotechnical investigation in-situ test field, be specifically related to a kind of injection method of static sounding feeler lever.
Background technology
Static sounding is a kind of home position testing method commonly used in geotechnical investigation, records the soil layer penetration resistance in soil by a kind of special probe is pressed into, and obtains can be used for the soil layer mechanics parameter of engineering design.This home position testing method uses very general in engineering investigation.But because there is gradient in feeler lever in injection, the vertical curve position that the probe in the injection soil layer can depart from exploratory hole center on ground causes test data can not truly reflect position, the ground static sounding index on stratum vertically downward, causes test crash.Because the feeler lever slenderness ratio is very large, for guaranteeing the unlikely appearance of feeler lever injection over allowing deviant, between stipulating in the industry that at present a depth of penetration generally surpasses 30 meters to 40 meters, surpassing this degree of depth needs segmentation take little guiding pillar afterwards, carries out repeatedly injection.This experimental working technique, labour intensity is large, time-consuming taking a lot of work.
Summary of the invention
The objective of the invention is according to above-mentioned the deficiencies in the prior art, a kind of injection method of static sounding feeler lever is provided, constantly adjust by the verticality to feeler lever in penetration process, guarantee that injection angle lapping gradient continues injection when minimum, in the situation that not lower guiding pillar improves the degree of depth of an injection as much as possible.
The object of the invention realizes being completed by following technical scheme:
A kind of injection method of static sounding feeler lever, described method of operating relates to feeler lever, hydraulic press, described feeler lever is connected on described hydraulic press and by it and completes injection, described feeler lever end is provided with probe, be connected with angular transducer on described probe, it is characterized in that: described method of operating comprises the steps: at least
(a) between the injection position of described feeler lever and described hydraulic press, angle is set to less than 0.3 °;
(b) stop injection after described feeler lever injection 2-3m, adopt pipe wrench that described feeler lever is turned clockwise 180 °, observe simultaneously the angle-data of described probe, when trend appears diminishing in described angle-data, the position when rotating described feeler lever to described angle-data minimum value; When described angle-data occurs becoming main trend, described feeler lever is continued to turn clockwise until original position;
(c) feeler lever of described step in a) be with less than after 0.3 ° of injection, during greater than 5m, stops injection when described feeler lever horizontal level deviation, leads by pillar under injection.
When described feeler lever horizontal-shift is not more than certain permissible value, improve the degree of depth of an injection of feeler lever, otherwise need stop injection, carry out verticality by guiding pillar under injection and control.
The soil shallow-layer of described feeler lever injection contains in the situation of miscellaneous fill, and described miscellaneous fill is removed until described soil body shallow-layer is natural soil layer.
When the employing pillar is pressed into the bottom of protecting described feeler lever, described feeler lever to be positioned at described pillar, angle is less than 3 °.Adopt rig to rush the method for pillar and described feeler lever gradation injection, when described feeler lever is positioned at the bottom of described pillar, angle is less than 3 °, and described feeler lever exceeds, and the degree of depth of continuation injection is not more than 20m behind described pillar bottom.
Described feeler lever is by the collocation of thickness feeler lever, and described feeler lever leading portion is thin feeler lever, and back segment is thick feeler lever.
With interior different depth multiple rotary feeler lever, again continue injection after making the angle minimum between feeler lever and plumb line 20 meters of depths of penetration.
Described step (a) also comprises the inspection step to described feeler lever and described hydraulic press before, and described inspection step comprises the following steps at least:
By the angle steel inner side edge, the rotation limit described feeler lever and described feeler lever are carried out the glacing flatness inspection, the bonding strength between described feeler lever and described probe are checked;
By spirit level, described hydraulic press levelness is checked;
Check the angle-data of described probe.
Described feeler lever depth of penetration is during less than 10 meters, and its described angle-data pulls up feeler lever injection again during more than or equal to 1.5 °; Described feeler lever depth of penetration is less than 20 meters, and its described angle-data pulls up feeler lever injection again during more than or equal to 2.5 °.
During greater than 5 meters, stop injection when described feeler lever horizontal level deviation, lead by pillar under injection.Described feeler lever exceeds described pillar bottom lengths and is not more than 20 meters.
By thickness collocation apolegamy feeler lever, front about 20 meters are adopted thin feeler lever, select later on thick feeler lever for 20 meters.
Advantage of the present invention is: improved static sounding feeler lever verticality, can be in the feeler lever degree of skewness restriction that allows, improve as far as possible depth of penetration of feeler lever and needn't take traditional means such as lower guiding pillar to improve the feeler lever verticality, reduced the working strength of static sounding field operation operation.
Description of drawings
Fig. 1 is experimental data figure one of the present invention;
Fig. 2 is experimental data figure two of the present invention;
Fig. 3 is block diagram one of the present invention;
Fig. 4 is block diagram two of the present invention;
Fig. 5 is block diagram three of the present invention;
Fig. 6 is block diagram four of the present invention;
Fig. 7 is block diagram five of the present invention;
Fig. 8 is block diagram six of the present invention.
The specific embodiment
Feature of the present invention and other correlated characteristic are described in further detail by embodiment below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
As shown in Fig. 1-8, in figure, mark 1-2 is respectively: rig 1, feeler lever 2.
Embodiment one: as shown in Figure 5, adopt two kinds of different feeler levers of diameter to make up, front end 20m-25m partly selects 36mm diameter feeler lever, part afterwards adopts the feeler lever of 40mm or 42mm diameter, this combined method can effectively guarantee the rigidity of feeler lever, and phenomenon easily can not fracture when injection.
Before construction beginning, the glacing flatness of every feeler lever is detected, generally can pass through visual method, while in the situation that the required precision high angle steel inboard that feeler lever is rested on high straightness rotates the glacing flatness of passing through the visual detection feeler lever.
As shown in Figure 3, the preparation before injection: arrange the earth anchor of enough rigs 1, the leveling drilling machine body makes its supporting leg fully contact with ground, adopts spirit level inspection AQL degree.Check the verticality of quiet inspecting hole, front 10m must guarantee vertically, if there is miscellaneous fill in injection place superficial part, should clean out before injection, in order to avoid the injection of feeler lever is counteracted.The wiring of popping one's head in is connected with instrument, and whether being connected between detecting feeler lever and popping one's head in be normal.As shown in Figure 4, check probe shows whether numerical value is normal, namely whether normal the vertical depression probe, test the collection of Ps numerical value; Angle-data to the probe on feeler lever 2 is tested, and respectively probe is placed in different angles, and whether the test probe angle measuring function is normal.As shown in Figure 6, after feeler lever is kept flat, its reading should be guaranteed about 90 degree, should be 0 degree left and right (less than 0.3 degree) when putting into hydraulic press injection position, and during injection, angular error is controlled at about 1 degree as far as possible.
Be divided into following several stages during injection:
(1) as shown in Figure 7, after normal injection, suspend during to the 2m-3m left and right when the feeler lever injection, with pipe wrench, feeler lever is turned clockwise, check the variation of angle head angle data, if reduction trend appears in angle-data, stop when rotating to minimum value, continue the injection feeler lever; If increase tendency appears in angle-data, continue to be rotated in a clockwise direction feeler lever is gone back to original position.
(2) the feeler lever injection stops injection to underground 5 meters, and probe is carried out that temperature is waftd and zero calibration of wafing.
(3) suspend the action of doing in repeating step (1) during to the 7m-8m left and right when the feeler lever injection.
When (4) the feeler lever injection is to 10 meters of undergrounds, if the head angle data show greater than 1.5 degree, feeler lever is extracted injection again after cleaning; The probe injection is during to 20 meters of undergrounds, if the head angle data show greater than 2.5 degree, feeler lever is extracted injection again after cleaning.
(5) in the feeler lever penetration process, in case find that the probe horizontal-shift distance on feeler lever top surpasses in the situation of 5m, stop injection, the method that adopts lower pillar guiding corrects back to position in the angular deviation allowed band with feeler lever.
(6) the feeler lever injection is to the bottom, and experiment is completed, disposal data.
When feeler lever injection to hard formation reaches more closely knit layer of sand, slow down penetrating speed, earth anchor is tightened, keep the variation of level and the head angle data of fuselage as far as possible, slowly enter.
When entering better soil layer than soft layer, should control penetrating speed (injection at a slow speed) at probe; Enter in better soil layer aspect 3m at probe, 0.5m returns zero once at least.Should notice simultaneously whether earth anchor exists pulls up, in time the leveling rig.
Embodiment two: the method for the present embodiment is basic identical with embodiment one, and differential point is to adopt the pillar of 15-20m to be pressed into the protection feeler lever, is applicable to test the area and exists Soft Soil Layer and depth of penetration to have relatively high expectations in the situation of (for example greater than 60m).
As shown in Figure 1, 2, Fig. 1 is the experimental data in 59 holes of method of operating in the project of outskirts park, Chongming, Shanghai City of adopting the present embodiment; Fig. 2 can obviously learn by two figure for adopting the experimental data that operates in 119 holes in Chinese fair exhibitions synthesis project (northern piece) of the present embodiment, the present invention during to the feeler lever injection gradient have the effect that significantly reduces, improve the test Success Ratio.
Claims (8)
1. the injection method of a static sounding feeler lever, described method of operating relates to feeler lever, hydraulic press, described feeler lever is connected on described hydraulic press and by it and completes injection, described feeler lever end is provided with probe, be connected with angular transducer on described probe, it is characterized in that: described method of operating comprises the steps: at least
(a) between the injection position of described feeler lever and described hydraulic press, angle is set to less than 0.3 °;
(b) stop injection after described feeler lever injection certain distance, adopt pipe wrench that described feeler lever is turned clockwise 180 °, observe simultaneously the angle-data of described probe, when trend appears diminishing in described angle-data, the position when rotating described feeler lever to described angle-data minimum value; When described angle-data occurs becoming main trend, described feeler lever is continued to turn clockwise until original position;
(c) feeler lever of described step in a) be with less than after 0.3 ° of injection, during greater than 5m, stops injection when described feeler lever horizontal level deviation, leads by pillar under injection.
2. the injection method of a kind of static sounding feeler lever according to claim 1, it is characterized in that: the soil shallow-layer of described feeler lever injection contains in the situation of miscellaneous fill, and described miscellaneous fill is removed until described soil body shallow-layer is natural soil layer.
3. the injection method of a kind of static sounding feeler lever according to claim 1 is characterized in that: adopt pillar to be pressed into the described feeler lever of protection, when described feeler lever is positioned at the bottom of described pillar, angle is less than 3 °.
4. the injection method of a kind of static sounding feeler lever according to claim 1, it is characterized in that: adopt rig to rush the method for pillar and described feeler lever gradation injection, angle was less than 3 ° when described feeler lever was positioned at the bottom of described pillar, and described feeler lever exceeds the degree of depth that continues injection behind described pillar bottom and is not more than 20m.
5. the injection method of a kind of static sounding feeler lever according to claim 1 is characterized in that: with interior different depth multiple rotary feeler lever, continue injection after making the angle minimum between feeler lever and plumb line 20 meters of depths of penetration again.
6. the injection method of a kind of static sounding feeler lever according to claim 1 is characterized in that: described feeler lever is by the collocation of thickness feeler lever, and described feeler lever leading portion is thin feeler lever, and back segment is thick feeler lever.
7. the injection method of a kind of static sounding feeler lever according to claim 1, it is characterized in that: described step (a) also comprises the inspection step to described feeler lever and described hydraulic press before, described inspection step comprises the following steps at least:
By the angle steel inner side edge, the rotation limit described feeler lever and described feeler lever are carried out the glacing flatness inspection, the bonding strength between described feeler lever and described probe are checked;
By spirit level, described hydraulic press levelness is checked;
Check the angle-data of described probe.
8. the injection method of a kind of static sounding feeler lever according to claim 1 is characterized in that: described feeler lever depth of penetration is during less than 10 meters, and its described angle-data pulls up feeler lever injection again during more than or equal to 1.5 °; Described feeler lever depth of penetration is less than 20 meters, and its described angle-data pulls up feeler lever injection again during more than or equal to 2.5 °.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310049510.3A CN103088804B (en) | 2013-02-07 | 2013-02-07 | Injection method for static sounding probe rod |
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| CN201310049510.3A CN103088804B (en) | 2013-02-07 | 2013-02-07 | Injection method for static sounding probe rod |
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| CN103088804B CN103088804B (en) | 2014-12-03 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471644A (en) * | 2013-09-13 | 2013-12-25 | 爱德森（厦门）电子有限公司 | Device and method for accurately positioning and detecting complex bodies by adopting memory materials |
| CN105155500A (en) * | 2015-08-03 | 2015-12-16 | 河海大学 | Rotation type static sounding detecting method for cement mixing pile |
| CN109056688A (en) * | 2018-09-04 | 2018-12-21 | 王盼 | It is a kind of under water can continuous injection static sounding device |
| CN109555099A (en) * | 2019-01-07 | 2019-04-02 | 大连理工大学 | A kind of novel sea soil is complete to flow penetration sounding system and test method |
| CN109655001A (en) * | 2019-02-03 | 2019-04-19 | 南京吉欧地下空间科技有限公司 | A kind of device and its application method of the lateral displacement of the in-situ monitoring soil body |
| CN111139812A (en) * | 2019-12-30 | 2020-05-12 | 山东建大工程鉴定加固研究院 | Static sounding device and method for geotechnical geological exploration |
| CN111829870A (en) * | 2020-07-09 | 2020-10-27 | 广州海洋地质调查局 | Static sounding testing device in sampling pipe |
| CN112735508A (en) * | 2020-11-25 | 2021-04-30 | 中国电建集团中南勘测设计研究院有限公司 | Clamping and rotating device and method for inclination adjustment of probe rod |
| CN113846616A (en) * | 2021-08-30 | 2021-12-28 | 中建华宸(海南)建设集团有限公司 | Platform type ocean static sounding device |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471644A (en) * | 2013-09-13 | 2013-12-25 | 爱德森（厦门）电子有限公司 | Device and method for accurately positioning and detecting complex bodies by adopting memory materials |
| CN105155500A (en) * | 2015-08-03 | 2015-12-16 | 河海大学 | Rotation type static sounding detecting method for cement mixing pile |
| CN109056688A (en) * | 2018-09-04 | 2018-12-21 | 王盼 | It is a kind of under water can continuous injection static sounding device |
| CN109056688B (en) * | 2018-09-04 | 2023-10-24 | 武汉吉欧信海洋科技股份有限公司 | Underwater continuous penetration static sounding device |
| CN109555099A (en) * | 2019-01-07 | 2019-04-02 | 大连理工大学 | A kind of novel sea soil is complete to flow penetration sounding system and test method |
| CN109555099B (en) * | 2019-01-07 | 2023-12-15 | 大连理工大学 | Novel ocean soil full-current sounding system and testing method |
| CN109655001A (en) * | 2019-02-03 | 2019-04-19 | 南京吉欧地下空间科技有限公司 | A kind of device and its application method of the lateral displacement of the in-situ monitoring soil body |
| CN111139812A (en) * | 2019-12-30 | 2020-05-12 | 山东建大工程鉴定加固研究院 | Static sounding device and method for geotechnical geological exploration |
| CN111139812B (en) * | 2019-12-30 | 2021-07-06 | 山东建大工程鉴定加固研究院 | Static sounding device and method for geotechnical geological exploration |
| CN111829870A (en) * | 2020-07-09 | 2020-10-27 | 广州海洋地质调查局 | Static sounding testing device in sampling pipe |
| CN112735508A (en) * | 2020-11-25 | 2021-04-30 | 中国电建集团中南勘测设计研究院有限公司 | Clamping and rotating device and method for inclination adjustment of probe rod |
| CN113846616A (en) * | 2021-08-30 | 2021-12-28 | 中建华宸(海南)建设集团有限公司 | Platform type ocean static sounding device |
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Address after: 200032 18, building 681, Xiao Mu Qiao Road, Xuhui District, Shanghai. Patentee after: Shanghai Survey, Design and Research Institute (Group) Co.,Ltd. Country or region after: China Address before: 200032 18, building 681, Xiao Mu Qiao Road, Xuhui District, Shanghai. Patentee before: SHANGHAI GEOTECHNICAL INVESTIGATIONS & DESIGN INSTITUTE Co.,Ltd. Country or region before: China |