SU969819A1 - Method of field testing of sagging soil - Google Patents
Method of field testing of sagging soil Download PDFInfo
- Publication number
- SU969819A1 SU969819A1 SU813278405A SU3278405A SU969819A1 SU 969819 A1 SU969819 A1 SU 969819A1 SU 813278405 A SU813278405 A SU 813278405A SU 3278405 A SU3278405 A SU 3278405A SU 969819 A1 SU969819 A1 SU 969819A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- column
- field testing
- soil
- sagging
- drilling
- Prior art date
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- Geophysics And Detection Of Objects (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
1ЛОНКОВЫМ снар дом столбика породы} на фиг. 2 - замачивание столбика и измерение его просадки.The skylight of the rock column} in FIG. 2 - soaking the column and measuring its drawdown.
Способ осуществл етс следующим образом,.The method is carried out as follows.
Сначала осуществл ют отделение испытываемого грунта от окружающего грунта путем бурени скважин 1 при помощи колонкового снар да, состо щего из коронки 2, предназначенной дл выбуривани столбика породы 3, колонковых труб 4, служащих дл прима столбика породы и соедин емых в колонку ниппел ми 5, бурильной штанги б, соедин емой с колонковой трубой переходником 7 и приводимой во вращение буровым станком. Бурение производ т с продувкой забо и кольцевого зазора 8 между трубами и стенками скважин сжатым воздухом (направление его движени показано на фиг. 1 стрелками). После бурени скважины на глубину просадочной толщи НПР с оставлением столбика породы 3 высотой Н„р в колонне колонковых труб 4 последнюю закрепл ют на .весу при помощи xoiviyTa 9 и отсоедин ю переходник 7 и бурильну штангу 6. Затем укладывают на верх столбика 3 защитную фильтрующую прокладку 10, устанавливают на верх колонны колонковых труб емкост 11 с перфорированным днищем 12 и специальными отверсти ми 13, через кото| ые пропускают марки-стержни, заглубл емые в верхнюю часть столбика породы 3, служащие дл измерени его просадки.First, the test soil is separated from the surrounding soil by drilling wells 1 with a coring device consisting of a crown 2, intended for drilling out rock column 3, core pipes 4, used for receiving the rock column and connecting them to the column with nipples 5, a drill rod b connected to the core pipe by an adapter 7 and driven by a drilling machine. The drilling is carried out with blowing of the bottom and annular gap 8 between the pipes and the walls of the wells with compressed air (the direction of its movement is shown in Fig. 1 by arrows). After drilling a well to the depth of the subsidence of the LPR, leaving the rock column 3 high Hf in the column of core pipes 4, the latter is fixed on the weight using xoiviyTa 9 and disconnecting adapter 7 and the drill rod 6. Then the protective filter is placed on the top of column 3 The gasket 10 is mounted on top of the column of a column pipe with a capacitance 11 with a perforated bottom 12 and special holes 13 through which | The rods mark rods, recessed into the upper part of rock column 3, are used to measure its subsidence.
Далее осуществл ют замачивание столбика породы 3, подава воду через емкость 11 и измер просадку его поверхности по понижению марокстержней относительно днища 12 емкости 11.Next, the rock column 3 is soaked by supplying water through the tank 11 and measuring the subsidence of its surface by lowering the rod bar relative to the bottom 12 of the tank 11.
Применение предлагаемого способа позволит по сравнению с прототипом снизить трудоемкость и стоимость испытани просадки в 10-15 раз, а его длительность - до 3-4 сут (вместо 10-15 сут.).The application of the proposed method will allow, in comparison with the prototype, to reduce the complexity and cost of testing a drawdown by 10-15 times, and its duration - up to 3-4 days (instead of 10-15 days).
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813278405A SU969819A1 (en) | 1981-04-14 | 1981-04-14 | Method of field testing of sagging soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813278405A SU969819A1 (en) | 1981-04-14 | 1981-04-14 | Method of field testing of sagging soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU969819A1 true SU969819A1 (en) | 1982-10-30 |
Family
ID=20954352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813278405A SU969819A1 (en) | 1981-04-14 | 1981-04-14 | Method of field testing of sagging soil |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU969819A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820086A (en) * | 2015-04-30 | 2015-08-05 | 山东科技大学 | Rock stratum and ground surface subsidence simulation box type test device |
-
1981
- 1981-04-14 SU SU813278405A patent/SU969819A1/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104820086A (en) * | 2015-04-30 | 2015-08-05 | 山东科技大学 | Rock stratum and ground surface subsidence simulation box type test device |
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