CS237103B1

CS237103B1 - Hydraulic rock pressure sensor in borehole

Info

Publication number: CS237103B1
Application number: CS811641A
Authority: CS
Inventors: Michal Tokar; Ladislav Cerey
Original assignee: Michal Tokar; Ladislav Cerey
Priority date: 1981-03-06
Filing date: 1981-03-06
Publication date: 1985-07-16

Abstract

Zariadením, ktorého sa rieěenie týká, sa umožňuje sledovat zaťaženie v priestore, v ktorom je zabudované. V baníctve v ochranných pilieroch a v podzerpnom staviteístve umožňuje zisťovanie zaťaženia pod základmi stavby, napatia v ipSde a určenie únosnosti p&dy. Podstatou rlešenia snímača hornin vo vrte je možnost snímat tlak působiaci v dvoch kolmých smeroch pomocou dvoch, resp. štyroch hydraulických valcov prostredníctvom hydraulického média z hydraulického valca cez vysokotlakovú rúrku na rozvodku a na merač tlaku.The device to which the solution relates allows monitoring the load in the space in which it is installed. In mining, in protective pillars and in under-soil construction, it allows detecting the load under the foundations of the building, stresses in the ground and determining the bearing capacity of the soil. The essence of the solution of the rock sensor in the borehole is the possibility of sensing the pressure acting in two perpendicular directions using two, or respectively. four hydraulic cylinders via the hydraulic medium from the hydraulic cylinder through the high-pressure pipe to the distributor and to the pressure gauge.

Description

Vynález sa týká hydraulického snímača tlaku vo vrte, ktorý rieši zisťovanie zaťaženia v uholnom pilieri, resp. medzipilieri uholného sloja v oblasti stěnových porubov za účelom optlmalizácie ich rozmerov.BACKGROUND OF THE INVENTION The present invention relates to a hydraulic bore pressure sensor which detects the load in the angle pillar, respectively. an intermediate pillar of the coal seam in the area of the wall faces in order to optimize their dimensions.

Doterajšie známe zariadenia k zisťovaniu priebehu zaťaženia ochranných pilierov a medzipilierov sú obmedzené.The known devices for detecting the course of loading of protective pillars and intermediate pillars are limited.

V súčasnej době zariadenia k meraniu velkosti zaťaženia poznáme termoelektrické snímače Meihak a hydraulické podušky. Uvedené zariadenia majú obmedzený rozsah použitia s malou toleranciou rozsahu, zároveň si vyžadujú čisté vrty. Termoelektrické snímače nie sú vhodné do vlhkého prostredia, čo nepriaznivo působí na přesnost a funkčnost pri meraní.Nowadays we know the Meihak thermoelectric sensors and hydraulic cushions. These devices have a limited range of use with a low range tolerance, while requiring clean boreholes. Thermoelectric sensors are not suitable for humid environments, which adversely affects measurement accuracy and functionality.

Vyššie uvedené nedostatky odstraňuje hydraulický snímač tlaku hornin vo vrte pozostávajúci z hydraulického valca, rámu, potrubia a pružin podía vynálezu, ktorého podstata je, že v ráme je upevněný dvojstranný válec, piestnice, ktorého sú opatřené proti sebe uloženými opornými segmentami, ktoré sú vo východzej polohe držané pružinami, pričom v strednej časti dvojstranného valca je zaústěné potrubie s odvzdušňovacou skrutkou a ukotvené plieniacim lankom.The above mentioned drawbacks are eliminated by a hydraulic rock pressure sensor in a borehole consisting of a hydraulic cylinder, a frame, a pipe and springs according to the invention, which is characterized in that a double-sided cylinder, a piston rod is provided in the frame. In the middle part of the double-sided cylinder, there is an inlet pipe with a vent screw and anchored by a diaper cable.

Hydraulický snímač tlaku vo vrte vyznačuje sa tým, že opěrné segmenty s piestnicou sú v rápie zaistené proti vypadnutiu poistným kolíkom.The hydraulic borehole pressure sensor is characterized in that the piston rod support segments are secured in the rim against falling out by a safety pin.

Výhodou snímača podía vynálezu je, že umožňuje meranie vo vlhku, aj vo vodnom prostředí vrtu. Nevyžaduje čisté vrty po celej dížke, len v mieste snímača. Ďalej umožňuje meranie vo vrtoch i nad 0 160 mm s použitím nadstavcov. Pri instalovaní dvoch snímačov mimobežne priečne osadených vo vrte tesne pri sebe, umožňuje okrem velkosti zaťaženia zistiť i směr hlavných napátí.An advantage of the transducer according to the invention is that it allows measurement in both the humid and aqueous environment of the well. It does not require clean drilling over the entire length, only at the sensor location. It also allows measurements in boreholes even above 0 160 mm using attachments. When installing two transversely mounted transversely mounted in a borehole close to each other, the direction of the main voltages can be determined in addition to the load.

Předmětný vynález umožňuje zisťovať zaťaženie v priestore umiestnením snímačovThe present invention makes it possible to detect the load in space by placing sensors

Claims

SUBJECT

A hydraulic borehole rock pressure sensor comprising a hydraulic cylinder, a frame, a pipe and springs, characterized in that the frame (3) has a double-sided cylinder (1), a piston rod, with supporting segments (2) disposed opposite one another. which are held in the starting position by springs (5), in the middle part of the double bore due to the difference of the original medium used and the subsequent measured values.

When placing several hydraulic sensors in a borehole, we can find out the course of loading of the monitored pillar according to the measured values of individual sensors. This method determines precisely the load on the pillar, allowing the optimum width of the protective pillars to be retained for coal and other minerals. For example, the width of the coal protective pillars and the intermediate pillars of the wall faces has so far been kept only oversized according to operational practice, resulting in large mining losses.

Fig. 1 is a side view of the sensor. Fig. 2 is a front view of the sensor. Fig. 3 is a plan view of the sensor in cross section through the piston. Fig. 4 shows a built-in sensor in the borehole.

A hydraulic borehole rock pressure sensor consisting of a hydraulic cylinder, a piping frame and springs, characterized in that a double-sided piston rod cylinder 1 is provided in the frame 3 and provided with supporting segments 2, which are supported by springs 5 in an advantageous position. wherein in the middle part of the double-sided cylinder 1 there is an inlet pipe 6 with a vent screw 7 and an anchored rope 8 anchored.

The hydraulic rock pressure sensor is further characterized in that the piston rod support segments 2 are secured in the frame 3 against falling out by a locking pin 4.

The pressure sensing mode (Fig. 4) is illustrated by one sensing apparatus which is distributed in the borehole as required. Each sensing apparatus consists of a sensor

9, the connecting hose 6, which serves to discharge the hydraulic medium to the manifold

10 and a valve 12. A pressure gauge 11 is mounted on the distributor 11. The valve 12 serves to close the pressure medium in the measuring circuit. A traction cable 8 is mounted on the hydraulic sensor, by means of which the sensor is loosened out of the borehole.

YNALEZU side cylinder (1) is an inlet pipe (6) with a vent screw (7) and anchored by a foaming cable (8 j.

Hydraulic rocker pressure sensor in the borehole according to item 1, characterized in that the support segments (2) with the piston are secured in the frame (3) against falling out by a locking pin (4).