SU815622A1 - Device for static and dynamic ground probing - Google Patents

Description

The invention relates to the construction, and more specifically to the study of the physico-mechanical characteristics of soils by sounding.

A device for static sensing, including a probe with a rod, a crushing mechanism, measuring instruments

The disadvantage of this device is the inability to provide dynamic sensing.

The closest technical solution to the proposed one is a device for static and dynamic sensing, including a transport unit, a rod string mounted on it with a probe having a working resistance sensor, an amplification unit, measuring instruments, shock and catching mechanisms £ 2].

The disadvantage of this device is the large measurement errors of the parameters of static n-dynamic sounding and the inability to penetrate dense soils (especially high power).

The purpose of the invention is to increase the exact—, these measurements.

This goal is achieved by the fact that in the device for static and dynamic sensing, which includes a transport unit, a rod string with a probe mounted on it, with a resistance sensor, an amplification unit, measuring instruments, shock and catching mechanisms, the probe is equipped with sequentially mounted sensors lateral friction and linear overloads connected through the amplification unit with measuring instruments.

In FIG. 1 schematically shows the proposed device; in FIG. 2 probe and registration system; in FIG. 3 - headband, rod (upper end) and cable.

The device for static and dynamic sounding of soils consists (Fig. 1) of the transport unit lj of the catching device 2. for static immersion, device 6 for dynamic immersion, sensing rods 3, probe 4, recording device ₅ , extender 7, headband 8 and cable 9. The registration system consists of a gain unit 10 and a recorder unit 11, an expander 12, and a sensor. 13 drag, sensor 14 lateral- _10th friction, sensor 15 linear overload.

In this case there are three channel gains arranged in the gain block 10, and three registrar ₁₅ By arranging false in block 11 registrar. One channel comes from the drag sensor 13, the second channel from the side friction sensor 14 and the third channel from the linear overload sensor 15 (Fig. 2).

The apparatus ²⁰ operates as follows formed Zoom.

Transport unit 1 is located at the site of soil testing. The electronic equipment is turned on, i.e. supply voltage is supplied to the meter ^{— the} $ ² part of the probe 4, the recording equipment 5, to the amplification unit 10 and the recorder unit 11. The device 2 for static immersion and the device 6 for dynamic immersion ^{30 are} prepared for operation. Check the mechanical interface of the probe 4 with the expander 7, rods 3 and the headband 8, as well as the position of the cable 9 in the slot of the headband 8 (Fig. 1), it should not cut the cable 3 (Fig. C) 35 when the probe is immersed. Next, start a static diving device. In this case, registration is carried out by two parameters of frontal resistance and lateral friction, i.e. information comes from the drag sensor 13 and the lateral friction sensor 14, since the speed is almost constant and the signal from the overload sensor 15 is either zero or very weak. In case of hit of sandy soil, static sounding is not very effective. In this case include the work device 6 for the dynamic immersion and connect the third recording channel extending from the sen- ₅₀ 15 snip linear accelerations. In the process of dynamic immersion, three parameters are recorded: frontal resistance, lateral friction, and acceleration when introducing the probe 4. If a clay layer is encountered during soil testing and dynamic sounding becomes ineffective, they again switch to static sensing, etc. The use of an expander 7 is advisable, because, for example, a probe immersed in sand in a dynamic manner requires very great efforts for its extraction, which are not developed by static immersion unit 2. Therefore, only the extender 7, working during the extraction, greatly simplifies the extraction of the probe 4 (Fig. 1) from the well.

The use of devices for static and dynamic sounding of soils can improve the quality of research, increase labor productivity, and put engineering and geological surveys at the modern technical level. The economic effect of the implementation of the invention is up to 30% of the cost of engineering and geological surveys carried out using sounding.

Claims (2)

(54) DEVICE FOR STATIC AND DYNAMIC SOUNDING OF GROUNDS 38 (Fig. 1) from transport unit 1 of back-end device 2. for static sinking, device 6 dp of dynamic immersion, sounding rods 3, probe 4, recording equipment 5, widening device 7, ogrpovnik 8 and cable 9. The registration system consists of a gain unit 10 and a registrar unit 11, a widener 12, a sensor. 13 resistance bar, lateral friction sensor 14, screw overload sensor 15. In this case, three gain channels are used, located in the gain unit U, and three recorders located in the recorder unit 11. One channel comes from the drag sensor 13, the second channel from the side friction sensor 14 and the third channel from the linear overload sensor 15 (Fig. 2). The device works as follows. Transport unit 1 is located at the site of the soil test. Electronic equipment is turned on, i.e. The supply voltage is applied to the measuring part of the probe 4, the recording equipment 5, to the amplifier unit 1O and the recorder unit 11. A static immersion device 2 and a dynamic immersion device 6 are prepared for operation. Check the mechanical interface of probe 4 with expander 7, rods 3 and ogolovnik 8, as well as the position of the cable 9 in the slot of the end cap 8 (figure 1) it should not cut the cable 3 (fig. Schip immersion of the probe. Then start zo Dy In this case, the registration is carried out by two parameters of frontal resistance and side friction, i.e. information comes from frontal resistance sensor 13 and side friction sensor 14, since almost constant and the signal from the sensor 15 overload is either zero or about In the case of sandy soil penetration, static sounding is not very effective. In this case, the device 6 is put into operation for dynamic immersion and a third recording channel is connected from the linear overload sensor 15. In the process of dynamic immersion, three parameters are recorded resistance, lateral friction and acceleration when the probe 4 is inserted. If a clay layer is encountered during the testing of the soil and dynamic sounding becomes ineffective, then go back to the stagic zoid rsdaanyyu etc. The use of the expander 7 is advisable, since | For example, a probe loaded into sands in a dynamic way requires very large forces for its extraction, which installation 2 does not develop static immersion. Therefore, only the broadening of 7, the work during extraction, significantly suppresses the extraction of the probe 4 {FIG. 1) from the well. The use of a device for static and dynamic sounding of soils makes it possible to improve the quality of research institutes, increase labor productivity, and put engineering and geological surveys on a modern technical level. The economic effect from the introduction of the proposed invention is up to 30% of the cost of engineering geological surveys carried out by means of sounding. The invention The device for static and dynamic sounding of soils, including a transport installation, mounted on it a number of rods with a probe having a working resistance sensor, a reinforcement unit, measuring devices, a percussion and crushing mechanism, and that, with an increase in the measurement accuracy, the probe is equipped with successively installed lateral, friction and linear overload sensors, connected via a gain unit with measuring units. Sources of information taken into account in the examination 1. The copyright certificate CCCiP № 645О59, cl. E Q2H 1 / OO, 1976. 2. Sang erra G. Soil analysis by sounding method. M., stroiizdat, 1971, p. 7-4O. % Fig. / Y5 / i .7