CN102926369B

CN102926369B - Pre-boring pressure meter, self-boring pressure meter and self-boring pressure metering equipment

Info

Publication number: CN102926369B
Application number: CN201210458396.5A
Authority: CN
Inventors: 刘潋
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-14
Filing date: 2012-11-14
Publication date: 2014-07-16
Anticipated expiration: 2032-11-14
Also published as: CN102926369A

Abstract

The invention provides a pre-boring pressure meter, a self-boring pressure meter and a self-boring pressure metering equipment. The pre-boring pressure meter comprises a test device, a control device and an oil conveying tube, wherein the test device comprises a main body barrel, an elastic film, a pressure sensor and a displacement sensor; and the control device comprises an oil tank, an oil pump, a strain controller and a data analyzer. The self-boring pressure meter comprises a test device, a control device and an oil conveying tube, wherein the test device comprises an outer layer sleeve, an inner layer sleeve, a drill bit, an elastic film, a pressure sensor, a displacement sensor, a porous stone and a pore water pressure sensor; and the control device comprises an oil tank, an oil pump, a strain controller and a data analyzer. The self-boring pressure metering equipment comprises a self-boring pressure meter, a boring device, a water circulating device and a power device. According to the invention, the elastic film is controlled to stably expand, so that fracture phenomena due to uneven expansion of the elastic film can be avoided, and test data can be ensured to be continuous and accurate; and moreover, hydraulic oil is used as an inflating medium to protect an inner circuit structure from corroding.

Description

A kind of pre-drilling type side pressure instrument, self-boring pressuremeter and self-drilling type side pressure equipment

Technical field

The present invention relates to geotechnique's prospecting technical field, particularly, relate to a kind of pre-drilling type side pressure instrument, self-boring pressuremeter and self-drilling type side pressure equipment.

Background technology

Pressurementer test is to utilize to be arranged on otherly to press the expansion in soil of elastic membrane on instrument to apply uniform pressure to the soil body around, and the relation of analyzing the pressure that records and soil deformation amount is extrapolated a kind of home position testing method of the soil body mechanical properties such as the intensity of the soil body, modulus of deformation and multiple geotechnical engineering parameter.

Other pressure instrument is the main experimental equipment of carrying out pressurementer test.The original other instrument of pressing makes water as medium, thereby after hydraulic pressure is entered to other pressure instrument, inflation of elastic membrane is exerted pressure to the soil body, institute's applied pressure is by compression pump record, based on hypothesis elastic membrane, with cylinder form, expand, soil deformation amount can be represented by the volume that is pressed into water, but because the original other instrument inside of pressing is without any measurement mechanism, be difficult to accurately measure the volume that is pressed into water, and expanded film also non-homogeneous expansion in actual mechanical process, the displacement that can not accurately measure a certain ad-hoc location soil by the method for the volume conversion swell increment of water, therefore the original other accuracy of instrument of pressing is lower.Modern times, the other instrument of pressing was on side, to press the inner setting pressure of instrument and displacement transducer, thereby can accurately record the deflection to soil body applied pressure and the soil body, and geotechnical engineering parameter measured and that derivation obtains is more accurately credible; Because the modern other inside of instrument of pressing is all provided with sensor and accessory circuit structure, thus at present main flow other press instrument generally to use compressed air or other gas but not water as the inflating medium of elastic membrane, thereby press to side, in instrument, be pressed into gas and make inflation of elastic membrane.

Along with seabed Underwater Engineering is in recent years (as seabed tunnel, bridge foundation, Oversea wind power generation etc.) and the increasing of refuse landfill transformation project, geotechnical investigation personnel often need to carry out pressurementer test as Rock Region, refuse landfill or seabed, complicated soil layer and foreign material can often pierce through elastic membrane, because the other instrument of pressing of current main flow uses gas as inflating medium mostly, after elastic membrane is pierced, thereby gas is emptying rapidly, cause pressurementer test to be forced to stop, cause whole pressurementer test failure.Simultaneously seawater, percolate or other corrosive liquid know from experience that from elastic membrane perforated portion, to enter the other instrument of pressing inner, thereby destroy or corrosion internal circuit.The regular damage of other pressure instrument, not only makes the other instrument maintenance cost of pressing raise, and more makes the delay of engineering investigation project when serious.

In addition, the other instrument of pressing of main flow uses manual methods control gas to enter the other instrument of pressing more at present, also just say by observing the other real-time measuring data of instrument of pressing judge whether to increase air inflow or reduce air inflow, the shortcoming of doing is like this in process of the test, to have increased artifical influence factor, soil body pressure-soil body deformation quantity curve that test is obtained is unsmooth, thereby causes data analysis subsequently to produce error.Because side pressure instrument is placed in the darker position of underground, when opening on the ground valve, make gas enter other pressure after instrument, need to be through after a while, just can observe other variation of pressing instrument internal pressure and volume by real time data, for the personnel that are unfamiliar with experimental implementation, be easy to think by mistake that gas inlet is inadequate, and increase air inflow, when observing other pressure after the increase suddenly of instrument internal pressure, reduce or valve-off again at once, will cause like this trial curve too discrete, and can not carry out analysis subsequently, the other pressure of instrument inside of pressing increases suddenly or reduces in addition, also easily cause elastic membrane to be broken, thereby pressurementer test is fallen flat.

In sum, although modern other pressure instrument can accurately be measured and impose on the pressure of the soil body and the deflection of the soil body, the mode that adopts gas manually to control as inflating medium and employing the inflating medium amount that enters side pressure instrument has but been brought considerable restraint to the use of modern other pressure instrument.

Summary of the invention

The main purpose of the embodiment of the present invention is to provide a kind of pre-drilling type side pressure instrument, self-boring pressuremeter and self-drilling type side pressure equipment, using to solve and in existing pressurementer test technology, adopt gas easily to cause corrosive liquids to enter the other instrument of pressing as inflating medium, and use manual methods to control to enter other inflating medium amount of pressing instrument easily to cause the of poor quality and easy failed defect of pressurementer test.

To achieve these goals, the embodiment of the present invention provides a kind of pre-drilling type side pressure instrument, comprising: experimental rig, control device and petroleum pipeline; Experimental rig specifically comprises main body cylinder, elastic membrane, pressure sensor and displacement transducer; Control device specifically comprises fuel tank, oil pump, strain controller and data-analyzing machine; Wherein,

Described oil pump connects respectively petroleum pipeline and fuel tank, for exporting the hydraulic oil of described fuel tank by petroleum pipeline or hydraulic oil being recovered in fuel tank;

One end of described petroleum pipeline connects oil pump, and the other end connects described main body cylinder, for oily to the inner input hydraulic pressure of main body cylinder, or the hydraulic oil of retrieval body cylinder inside;

The barrel of described main body cylinder is provided with the first through hole;

It is outside that described elastic membrane is sheathed on described main body cylinder, forms an enclosure space with the barrel of main body cylinder, and this enclosure space is by described the first through hole and main body cylinder internal communication; When petroleum pipeline is filled with described enclosure space to the inner hydraulic oil of inputting of main body cylinder by the first through hole, this inflation of elastic membrane, when the hydraulic oil of petroleum pipeline retrieval body cylinder inside and the hydraulic oil of described enclosure space are discharged by the first through hole, this elastic membrane is shunk, and this elastic membrane is by expanding and shrinking the tested soil body is exerted pressure;

Described pressure sensor is fixed in described enclosure space, for measuring the hydraulic oil pressure in described enclosure space;

Described displacement transducer is fixed in described enclosure space and contacts with elastic membrane inner surface, for measuring the deformation quantity of described elastic membrane;

Described strain controller is Bonding pressure sensor, displacement transducer and oil pump respectively, for obtaining the measurement result of pressure sensor and displacement transducer, and according to described measurement result control oil pump output and recovery hydraulic oil;

Described data-analyzing machine connects strain controller, for obtaining and record the measurement result of pressure sensor and displacement transducer, according to the measurement result of pressure sensor, determine that described elastic membrane imposes on the pressure size of the tested soil body, according to the measurement result of displacement transducer, determine the soil body deformation quantity of the tested soil body, analyze the deformation quantity of the tested soil body and the relation between pressure size.

Preferably, in described pre-drilling type side pressure instrument, in described fuel tank, the hydraulic oil of storage is Of The Research Work On Bio-degradable Hydraulic Oil.

Preferably, in described pre-drilling type side pressure instrument, described oil pump comprises fuel-displaced valve and oil return valve; Described petroleum pipeline comprises output oil pipe and reclaims oil pipe; Described pre-drilling type side pressure instrument also comprises data wire;

One end of described output oil pipe connects fuel-displaced valve, and the other end connects described main body cylinder, and it is inner that described oil pump is input to described main body cylinder by fuel-displaced valve and output oil pipe by hydraulic oil;

Described recovery oil pipe one end connects oil return valve, and the other end connects described main body cylinder, and described oil pump reclaims the hydraulic oil of described main body cylinder inside by oil return valve and recovery oil pipe;

Described data wire is arranged in described output oil pipe and main body cylinder is inner, and through described the first through hole, its one end connects described strain controller, the other end connects respectively described pressure sensor and displacement transducer, for the measurement result of pressure sensor and displacement transducer being transferred to described strain controller.

Preferably, in described pre-drilling type side pressure instrument, described experimental rig specifically also comprises: device storehouse, upper collar, lower collar; Wherein,

Described device storehouse is tubular structure, fixed cover is located at main body cylinder outside, form the first enclosure space with the barrel of main body cylinder, the two ends in device storehouse are fixedly connected with lower collar with upper collar respectively, on the barrel in device storehouse, be provided with the second through hole, described the first enclosure space is by described the first through hole and main body cylinder internal communication;

It is outside that described elastic membrane is sheathed on described device storehouse, form the second enclosure space with the barrel in device storehouse, the two ends of elastic membrane are individually fixed in the junction of device storehouse and upper collar and lower collar, and described the first enclosure space is communicated with by the second through hole with the second enclosure space and the described enclosure space of common composition;

Described pressure sensor is fixed in described the first enclosure space;

Described displacement transducer is fixed in described the first enclosure space, and stretches in the second enclosure space and contact with elastic membrane inner surface through described the second through hole;

When petroleum pipeline is filled with described the first enclosure space to the hydraulic oil of the inner input of main body cylinder by the first through hole, and while being filled with the second enclosure space by described the second through hole, described inflation of elastic membrane; Hydraulic oil when petroleum pipeline retrieval body cylinder inside, the hydraulic oil of described the second enclosure space is expelled to the first enclosure space by the second through hole, then is expelled to main body cylinder when inner by the first enclosure space, and described elastic membrane is shunk.

Preferably, in described pre-drilling type side pressure instrument, described experimental rig also comprises elastic membrane protective sleeve, upper retainer ring and lower retainer ring; Wherein,

Fixed ring is fixedly connected with described upper collar;

Described lower retainer ring is fixedly connected with described lower collar;

Described elastic membrane protective sleeve is cage structure, is sheathed on described elastic membrane outside, and its two ends are individually fixed in the junction of retainer ring and upper collar and lower retainer ring and lower collar, for the protection of elastic membrane.

A self-boring pressuremeter, comprising: experimental rig, control device and petroleum pipeline; Experimental rig specifically comprises outer layer sleeve, inner layer sleeve, drill bit, elastic membrane, pressure sensor, displacement transducer, permeable stone and pore water pressure sensor; Control device specifically comprises fuel tank, oil pump, strain controller and data-analyzing machine; Wherein,

The internal diameter of described outer layer sleeve is greater than the external diameter of inner layer sleeve, is sheathed on inner layer sleeve outside;

Described drill bit is fixedly connected with the lower end of inner layer sleeve, for rotary drilling under the drive of inner layer sleeve;

Described elastic membrane is sheathed on outer layer sleeve outside, form an enclosure space with the barrel of outer layer sleeve, this elastic membrane expands while being filled with hydraulic oil in described enclosure space, shrinks, by expanding and shrinking the tested soil body is exerted pressure while discharging the hydraulic oil of described enclosure space;

One end of described petroleum pipeline connects oil pump, and the other end stretches in described enclosure space;

Described pore water pressure sensor is fixed in described enclosure space; Described permeable stone passes described elastic membrane and is connected with elastomeric film surface is airtight, and its one end contacts with the tested soil body, and the other end is communicated with described pore water pressure sensor; Described pore water pressure sensor is for measuring the pressure of the tested soil body pore water permeating by described permeable stone;

Described strain controller is Bonding pressure sensor, displacement transducer, pore water pressure sensor and oil pump respectively, for obtaining the measurement result of pressure sensor, displacement transducer and pore water pressure sensor, and according to described measurement result control oil pump output and recovery hydraulic oil;

Described data-analyzing machine connects strain controller, for obtaining and record the measurement result of pressure sensor, displacement transducer and pore water pressure sensor, according to the measurement result of pressure sensor and pore water pressure sensor, determine that described elastic membrane imposes on the pressure size of the tested soil body, according to the measurement result of displacement transducer, determine the soil body deformation quantity of the tested soil body, analyze the deformation quantity of the tested soil body and the relation between pressure size;

During use, described experimental rig is placed in boring, and described control device is placed in outside described boring; The upper end of described outer layer sleeve is fixedly connected with the outer drilling rod of outside drilling apparatus; The upper end of described inner layer sleeve is fixedly connected with the internal layer drilling rod of described outside drilling apparatus, under the drive of described internal layer drilling rod, rotates; The inside of described inner layer sleeve is for delivery of recirculated water to drill bit, and the space between described outer layer sleeve and inner layer sleeve is for discharging the recirculated water of drill bit.

Preferably, in described self-boring pressuremeter, in described fuel tank, the hydraulic oil of storage is Of The Research Work On Bio-degradable Hydraulic Oil.

Preferably, in described self-boring pressuremeter, described oil pump comprises fuel-displaced valve and oil return valve; Described petroleum pipeline comprises output oil pipe and reclaims oil pipe; Described self-boring pressuremeter also comprises data wire;

One end of described output oil pipe connects fuel-displaced valve, and the other end stretches in described enclosure space, and described oil pump is input to hydraulic oil in described enclosure space by fuel-displaced valve and output oil pipe;

Described recovery oil pipe one end connects oil return valve, and the other end stretches in described enclosure space, and described oil pump reclaims the hydraulic oil in described enclosure space by oil return valve and recovery oil pipe;

Described data wire is arranged in output oil pipe, and go deep in described enclosure space, its one end connects described strain controller, the other end connects respectively described pressure sensor, displacement transducer and pore water pressure sensor, for the measurement result of pressure sensor, displacement transducer and pore water pressure sensor being transferred to described strain controller.

Preferably, in described self-boring pressuremeter, described experimental rig specifically also comprises: device storehouse, upper collar, lower collar; Wherein,

Described device storehouse is tubular structure, and fixed cover is located at outer layer sleeve outside, forms the first enclosure space with the barrel of outer layer sleeve, and the two ends in device storehouse are fixedly connected with lower collar with upper collar respectively, on the barrel in device storehouse, are provided with through hole;

It is outside that described elastic membrane is sheathed on described device storehouse, form the second enclosure space with the barrel in device storehouse, the two ends of elastic membrane are individually fixed in the junction of device storehouse and upper collar and lower collar, and described the first enclosure space is communicated with by described through hole with the second enclosure space and the described enclosure space of common composition;

Described pressure sensor is fixed in described the first enclosure space;

Described displacement transducer is fixed in described the first enclosure space, and stretches in the second enclosure space and contact with elastic membrane inner surface through described through hole;

Described pore water pressure sensor is fixed in described the first enclosure space;

Described permeable stone passes elastic membrane and is fixed on the barrel in device storehouse, and its other end is communicated with described pore water pressure sensor by a pipeline being arranged on the barrel of described device storehouse;

One end of described petroleum pipeline connects oil pump, and the other end stretches in described the first enclosure space;

When petroleum pipeline is filled with the second enclosure space to the hydraulic oil of inputting in described the first enclosure space by described through hole, described inflation of elastic membrane, when the hydraulic oil in the hydraulic oil in petroleum pipeline reclaims the first enclosure space and the second enclosure space is expelled to the first enclosure space by described through hole, described springform is shunk.

Preferably, in described self-boring pressuremeter, described experimental rig also comprises elastic membrane protective sleeve, upper retainer ring and lower retainer ring; Wherein,

Fixed ring is fixedly connected with described upper collar;

Described lower retainer ring is fixedly connected with described lower collar;

A self-drilling type side pressure equipment, comprising: self-boring pressuremeter, drilling apparatus, water circle device and power set;

Described self-boring pressuremeter comprises experimental rig, control device and petroleum pipeline; Experimental rig specifically comprises outer layer sleeve, inner layer sleeve, drill bit, elastic membrane, pressure sensor, displacement transducer, permeable stone and pore water pressure sensor; Control device specifically comprises fuel tank, oil pump, strain controller and data-analyzing machine; Wherein,

Described drilling apparatus comprises rig, outer drilling rod and internal layer drilling rod; Wherein, described rig has elevating mechanism that can vertical lift; The lower end of outer drilling rod is fixedly connected with described outer layer sleeve; The external diameter of internal layer drilling rod is less than the internal diameter of described outer drilling rod, is installed in outer drilling rod inner, elevating mechanism described in its upper end pivot joint, and lower end is fixedly connected with described inner layer sleeve;

Described water circle device comprises water tank, water pump, output water pipe, return water pipe; Wherein, described water pump connects water tank; Output water pipe connects respectively water pump and described internal layer drilling rod; Return water pipe connects respectively water tank and described outer drilling rod;

Power set connect respectively described drilling apparatus and water circle device, are used to rig and water pump that power is provided;

During use, described experimental rig is placed in boring, and described control device is placed in outside described boring; Described rig is by controlling elevating mechanism vertical lift to drive outer drilling rod and internal layer drilling rod vertical lifting or decline, and rig rotates to drive bit by controlling internal layer drilling rod and inner layer sleeve; Described water pump is transported to drill bit by output water pipe and internal layer drilling rod by the water in water tank, and by space and the return water pipe of outer drilling rod and internal layer drilling rod, the water of output is recycled to water tank.

By means of technique scheme, pre-drilling type side pressure instrument provided by the invention, self-boring pressuremeter and self-drilling type side pressure equipment adopt control device to control to enter the hydraulic fluid flow rate of elastic membrane how many, and adopt hydraulic oil as inflating medium, in pressurementer test, control device can be controlled the hydraulic fluid flow rate that enters elastic membrane according to the inflation of elastic membrane amount and the pressure size that measure in real time, thereby can make inflation of elastic membrane degree steady change, not only can avoid elastic membrane to occur because non-homogeneous expansion causes the phenomenon of breaking, and can guarantee the continuity of experimental data, if elastic membrane is damaged simultaneously, hydraulic oil can protect the other circuit structure of instrument inside of pressing not to be subject to extraneous liquid invade and cause being corroded, than prior art, the embodiment of the present invention greatly reduces artifical influence factor, reduced testing error, guaranteed normally carrying out of pressurementer test.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the structural representation of experimental rig in the pre-drilling type side pressure instrument that provides of the embodiment of the present invention two;

Fig. 2 is the structural representation of experimental rig in the self-boring pressuremeter that provides of the embodiment of the present invention four;

Fig. 3 is the structural representation of the self-drilling type side pressure equipment that provides of the embodiment of the present invention six;

Fig. 4 is soil body pressure-soil body deformation quantity curve synoptic diagram that pre-drilling type side pressure instrument that the embodiment of the present invention two provides obtains.

Fig. 5 is soil body pressure-soil body deformation quantity curve synoptic diagram that the self-drilling type side pressure equipment that provides according to the embodiment of the present invention six obtains.

The specific embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.

In view of adopting gas as inflating medium and use manual methods to control the inflating medium amount that enters other pressure instrument, existing pressurementer test technology easily causes pressurementer test failure, the embodiment of the present invention provides a kind of pre-drilling type side pressure instrument, self-boring pressuremeter and self-drilling type side pressure equipment, in order to overcome the defect of above-mentioned existing pressurementer test technology.Below in conjunction with accompanying drawing, the present invention is described in detail.

Embodiment mono-

The present embodiment provides a kind of pre-drilling type side pressure instrument, and this pre-drilling type side pressure instrument comprises: experimental rig, control device and petroleum pipeline; Experimental rig specifically comprises main body cylinder, elastic membrane, pressure sensor and displacement transducer; Control device specifically comprises fuel tank, oil pump, strain controller and data-analyzing machine; Wherein,

Concrete, in the present embodiment, main body cylinder can adopt copper material to make; Elastic membrane should adopt the elastomeric material with good dilation performance, for example, can adopt the existing other elastomeric material making that instrument is conventional of pressing; Pressure sensor can adopt in industry the conventional sensor of can gaging pressure and measurement result being transferred out with the form of the signal of telecommunication to realize; Displacement transducer can adopt in industry the conventional sensor that can measure displacement and measurement result is transferred out with the form of the signal of telecommunication to realize; Petroleum pipeline for stretching into the tubular structure that hydraulic oil is provided for side pressure instrument in boring from holing, resistance to compression and antifraying force need stronger, can bear the frictional force of pressure and the outside soil body of internal hydraulic pressure oil, can adopt the deep-well cable using in petroleum industry as petroleum pipeline.

In the present embodiment, strain controller should have following functions: the corresponding electric signal that receives pressure sensor and displacement transducer transmission, can determine according to the measurement result of pressure sensor the pressure size of inflation of elastic membrane, according to the measurement result of displacement transducer, determine the degrees of expansion of elastic membrane, guaranteeing elastic membrane not parectasis guarantee test data continuous in the situation that, whether control oil pump needs output hydraulic pressure oil, and the flow of output hydraulic pressure oil is how many; In concrete enforcement, strain controller can be for having the realizations such as microcomputer, chip of corresponding data handling procedure.

In the present embodiment, data-analyzing machine should have following functions: obtain and be stored in the result that in whole pressurementer test process, pressure sensor and displacement sensor obtain; The result measuring according to pressure sensor is determined the pressure size that the tested soil body is suffered, the result obtaining according to displacement sensor is determined the deformation quantity of the tested soil body, analyze the relation between tested soil body deformation quantity and pressure size, and then obtain more geo-mechanics parameters, as cohesive strength, angle of internal friction, divergence cone angle, rigidity, intensity etc.; In concrete enforcement, strain controller can be for having storage and carrying out the realizations such as microcomputer, chip of corresponding data processing capacity.

The pre-drilling type side pressure instrument self providing due to the present embodiment does not possess drilling mechanism, therefore when the pre-drilling type side pressure instrument that uses the present embodiment to provide, need to adopt in advance the drilling equipment outside this pre-drilling type side pressure instrument to hole, then by means of devices such as the drilling rod of drilling equipment and elevating mechanisms, described experimental rig is placed in to boring, carry out pressurementer test, the control device outside described boring simultaneously and analytical system are carried out data acquisition and the analysis task of pressurementer test.

The pre-drilling type side pressure instrument that the present embodiment provides adopts strain controller to control to enter the hydraulic fluid flow rate of elastic membrane how many, during work, strain controller can be controlled the hydraulic fluid flow rate that enters elastic membrane according to the inflation of elastic membrane amount and the pressure size that measure in real time, thereby can make the degrees of expansion steady change of elastic membrane, guarantee the continuity of experimental data, reduce artifical influence factor, reduced testing error; In addition, the pre-drilling type side pressure instrument that the present embodiment provides adopts hydraulic oil as inflating medium, in the course of work, if elastic membrane is damaged, hydraulic oil can not leak rapidly from elastic membrane as the inflating medium of gaseous type, can avoid extraneous liquid to invade elastic membrane and cause the other circuit structure of instrument inside of pressing to be corroded, than prior art, the present embodiment can be implemented pressurementer test preferably, obtains more continuous result of the test, thereby can obtain the mechanics parameter of the true soil body of reaction.

Preferably, in described fuel tank, the hydraulic oil of storage is Of The Research Work On Bio-degradable Hydraulic Oil.

Concrete; the present embodiment adopts Of The Research Work On Bio-degradable Hydraulic Oil as inflating medium; when Of The Research Work On Bio-degradable Hydraulic Oil is pressed in other elastic membrane of pressing instrument; even if press instrument course of work Elastic film to damage on side; this kind of hydraulic fluid leak for example, in the tested soil body (groundwater environment or marine environment); can react with natural microorganism and be degraded into nontoxic material, can contaminated soil environment, there is good environmental protection effect.

Preferably, described oil pump comprises fuel-displaced valve and oil return valve; Described petroleum pipeline comprises output oil pipe and reclaims oil pipe; Described pre-drilling type side pressure instrument also comprises data wire;

Concrete, the present embodiment is by setting out fuel tap door and oil return valve, and output oil pipe and recovery oil pipe, realized input hydraulic pressure in elastic membrane oil and the pipeline road that reclaims hydraulic oil from elastic membrane are divided and be arranged, can in pressurementer test, control better the input recovering state of hydraulic oil, thereby control better the degrees of expansion of elastic membrane, the continuity of guarantee test result, avoids elastic membrane to occur because non-homogeneous expansion causes the phenomenon of breaking.

Concrete; for guarantee pressure sensor and displacement transducer can be by measurement result with the mode safe transmission of corresponding signal to strain controller; the present embodiment provides data wire that pressure sensor and displacement transducer are connected to strain controller; and make data wire pass output oil pipe, with protected data line by hole outer while being deep in boring not by external interference.

Preferably, described experimental rig specifically also comprises: device storehouse, upper collar, lower collar; Wherein,

Described pressure sensor is fixed in described the first enclosure space;

Concrete, device storehouse, upper collar and lower collar can adopt copper material to make; Between main body cylinder and upper collar and lower collar, can adopt and be threaded or snap fit is fixedly connected with; The object that device storehouse is set is the shape of support elastic film, and elastic membrane can be expanded with uniform cylinder form, can protect pressure sensor and displacement transducer normally to work simultaneously.

Preferably, described experimental rig also comprises elastic membrane protective sleeve, upper retainer ring and lower retainer ring; Wherein,

Fixed ring is fixedly connected with described upper collar;

Described lower retainer ring is fixedly connected with described lower collar;

Concrete; the elastic membrane protective sleeve lantern-shaped structure that many strip metals silver is made of serving as reasons; when elastic membrane does not expand; the metal strip that forms this elastic membrane protective sleeve is gathered and is attached to elastic membrane external surface; along with inflation of elastic membrane; each metal strip launches, and for the protection of elastic membrane, by the hard objects in the tested soil body, is not scratched.

Embodiment bis-

The present embodiment provides a concrete pre-drilling type side pressure instrument, as shown in Figure 1, this pre-drilling type side pressure instrument comprises: main body cylinder 101, elastic membrane 102, pressure sensor 103, displacement transducer 104, device storehouse 105, upper collar 106, lower collar 107, elastic membrane protective sleeve 108, fuel tank 109, oil pump 110, strain controller 111, data-analyzing machine 112, output oil pipe 113, recovery oil pipe 114, data wire 115, upper retainer ring 118, lower retainer ring 119, electronic instrument storehouse 120; Oil pump 110 specifically comprises fuel-displaced valve 110A and oil return valve 110B;

Wherein, main body cylinder 101, elastic membrane 102, pressure sensor 103, displacement transducer 104, device storehouse 105, upper collar 106, lower collar 107, elastic membrane protective sleeve 108, upper retainer ring 118, the common experimental rig that forms this pre-drilling type side pressure instrument of lower retainer ring 119 and electronic instrument storehouse 120; Fuel tank 109, oil pump 110, strain controller 111 and the common control device that forms this pre-drilling type side pressure instrument of data-analyzing machine 112; In fuel tank 109, store Of The Research Work On Bio-degradable Hydraulic Oil;

In the present embodiment, the annexation of each device is as follows: main body cylinder 101, device storehouse 105 and elastic membrane protective sleeve 108 are all copper tubular structure; On the barrel of main body cylinder 101, be provided with the first through hole 116; Device storehouse 105 fixed covers are located at main body cylinder 101 outsides, its upper and lower two ends connect and fix with upper collar 106 and lower collar 107 respectively, the outer tube wall of the inner tube wall in device storehouse 105 and main body cylinder 101 forms the first enclosure space, the first enclosure space is communicated with by the first through hole 116 with the inside of main body cylinder 101, is provided with the second through hole 117 on the barrel in device storehouse 105; Elastic membrane 102 is tubular caoutchouc elasticity film, be sheathed on 105 outsides, device storehouse, its upper end is clamped fixing by upper collar 106 and device storehouse 105, lower end is clamped fixing by lower collar 107 and device storehouse 105, the outer tube wall in elastic membrane 102 inner surfaces and device storehouse 105 forms the second enclosure space, and the first enclosure space is communicated with by the second through hole 117 with the second enclosure space; Elastic membrane protective sleeve 108 is cage structure, be sheathed on the outside of elastic membrane 102, its upper end is clamped fixing by upper end by upper retainer ring 118 and upper collar 106, lower end is clamped fixing by lower retainer ring 119 and lower collar 107, elastic membrane protective sleeve 108 can protect elastic membrane 102 to avoid the sharp material damage in tested soil; Pressure sensor 103 is fixed on the outer tube wall of main body cylinder 101, by data wire 115, is electrically connected to strain controller 111; Displacement transducer 104 is fixed on the outer tube wall of main body cylinder 101, by data wire 115, is electrically connected to strain controller 111, and the elastic piece structure of displacement transducer 104 stretches in the second enclosure space and contacts with the inner surface of elastic membrane 102 through the second through hole 117; The lower end of main body cylinder is fixed in electronic instrument storehouse 120, and its inside is equiped with the instrument (as location instrument etc.) of various auxiliary pre-drilling type side pressure instrument work, and these instruments connect strain controllers 111 by data wire 115; Output oil pipe 113 one end connect the fuel-displaced valve 110A of oil pump 110, the other end connects main body cylinder, for inputting Of The Research Work On Bio-degradable Hydraulic Oil to main body cylinder inside, data wire 115 is arranged in output oil pipe 113 simultaneously, and output oil pipe 113 can not be subject to external environmental interference by protected data line 115; Reclaim the oil return valve 110B that oil pipe 114 one end connect oil pump 110, the other end connects main body cylinder, for the Of The Research Work On Bio-degradable Hydraulic Oil of retrieval body cylinder inside; Data-analyzing machine 112 connects strain controller 111;

The course of work of the pre-drilling type side pressure instrument that the present embodiment provides is as follows:

Step S11, first utilize the drilling equipment outside this pre-drilling type side pressure instrument to hole, then the main body cylinder of the pre-drilling type side pressure instrument of the drilling rod of drilling equipment and this is fixedly connected with, elevating mechanism by drilling equipment, the experimental rig of this pre-drilling type side pressure instrument is sent in pre-drilled boring, arrive after predetermined test position control device for opening;

Step S12, oil pump 110 pumps into main body cylinder 101 inside by the Of The Research Work On Bio-degradable Hydraulic Oil in fuel tank 109, along with pumping into increasing of hydraulic oil, hydraulic oil is filled with in the first enclosure space that the barrel of device storehouse 105 and main body cylinder 101 surrounds by the first through hole 116, along with increasing of hydraulic oil in the first enclosure space, in the second enclosure space that the barrel that hydraulic oil flows into elastic membrane 102 and device storehouse 105 by the second through hole 117 surrounds; In this process, just started elastic membrane 102 deformation has not occurred, the elastic piece structure of displacement transducer 104 is in compressive state, along with elastic membrane 102 expands, the elastic piece structure of displacement transducer 104 starts to stretch, and displacement transducer 104 is determined the deformation quantity of elastic membrane 102 by the deformation of self elastic piece structure; Meanwhile, the hydraulic oil pressure that pressure sensor 103 is measured in the first enclosure space;

Step S13, when elastic membrane 102 expand into a certain degree, strain controller 111 control oil pumps 110 stop exporting Of The Research Work On Bio-degradable Hydraulic Oil, after determining the pressure stability of elastic membrane 102 inside, the Of The Research Work On Bio-degradable Hydraulic Oil that strain controller 111 control oil pumps 110 reclaim in elastic membrane, now because the pressure in elastic membrane 102 is very large, understand that some hydraulic oil is directly extruded and return in fuel tank 109 by reclaiming oil pipe 114, pressure decreased in determining elastic membrane 102 to a certain extent time, stops reclaiming hydraulic oil;

Again determine after the pressure stability in elastic membrane 102, strain controller 111 is control oil pump 110 output Of The Research Work On Bio-degradable Hydraulic Oils again, and when the pressure of elastic membrane to be determined 102 inside returns to the pressure before recovery hydraulic oil, first time stagnant ring manipulation completes;

Time stagnant ring manipulation number of times having required according to pressurementer test (pressurementer test General Requirements completes at least two and returns stagnant ring manipulation), repeats above-mentioned steps S12 and step S13;

It is to be noted, carry out in the process of each time stagnant circle, strain controller 111 is by the measurement result of data wire 115 Real-time Obtaining pressure sensors 103 and displacement transducer 104, and determine the deformation quantity of elastic membrane and the pressure of elastic membrane internal hydraulic pressure oil size according to the result of real-time acquisition, control the hydraulic fluid flow rate that enters elastic membrane 102 simultaneously, make the degrees of expansion steady change of elastic membrane, not only reduce because elastic membrane 102 internal pressure sudden changes cause the possibility of damaging, and guaranteed the continuity of experimental data; In addition, data-analyzing machine 112 is obtained and is recorded the measurement result of pressure sensor 103 and displacement transducer 104 by strain controller 111, and the result measuring according to pressure sensor 103 is determined the pressure size that the tested soil body is suffered, the result measuring according to displacement transducer 104 is determined the deformation quantity of the tested soil body, analyze the deformation quantity of the tested soil body and the relation between pressure size, and then the mechanics parameter of the more soil bodys of acquisition, as cohesive strength, angle of internal friction, divergence cone angle, rigidity, intensity etc.;

Step S14, after completing all times stagnant ring manipulations of pressurementer test regulation, strain controller 111 control oil pumps 110 reclaim Of The Research Work On Bio-degradable Hydraulic Oil, when this process starts, because the pressure in elastic membrane 102 is larger, understanding some Of The Research Work On Bio-degradable Hydraulic Oil is directly extruded and is returned in fuel tank 109, but along with the pressure in elastic membrane 102 reduces, and hydraulic oil has certain deadweight, only depend on the internal pressure of elastic membrane 102 can not continue remaining hydraulic oil pressure oil sump tank 109, now, strain controller 111 is opened the oil pumping function of oil pump 110, remaining Of The Research Work On Bio-degradable Hydraulic Oil in elastic membrane is drawn back in fuel tank 109, thereby elastic membrane 102 is shunk completely,

Step S15, after elastic membrane 102 is shunk completely, by the drilling rod of outside drilling equipment, regains the experimental rig of this pre-drilling type side pressure instrument in boring;

Step S16, data-analyzing machine 112 is according to the measurement result of the pressure sensor 103 recording in this pressurementer test and displacement transducer 104, analyze the deformation quantity of the tested soil body and the relation between pressure size, draw out soil body pressure-soil body deformation quantity curve as shown in Figure 4; Finish this pressurementer test.

Embodiment tri-

The present embodiment provides a kind of self-boring pressuremeter, and this self-boring pressuremeter comprises: experimental rig, control device and petroleum pipeline; Experimental rig specifically comprises outer layer sleeve, inner layer sleeve, drill bit, elastic membrane, pressure sensor, displacement transducer, permeable stone and pore water pressure sensor; Control device specifically comprises fuel tank, oil pump, strain controller and data-analyzing machine; Wherein,

Concrete, in the present embodiment, outer layer sleeve, inner layer sleeve can adopt copper material to make, the external diameter of inner layer sleeve is less than the internal diameter of outer layer sleeve, and the outer tube wall wall of inner layer sleeve and the inner tube wall of outer layer sleeve are separated by a distance, to guarantee that inner layer sleeve rotation time can not have influence on fixed outer layer sleeve; Drill bit is the drilling mechanism of this self-boring pressuremeter, is fixedly connected on inner layer sleeve lower end, can rotary drilling together when inner layer sleeve rotates;

Elastic membrane in the present embodiment, pressure sensor, displacement transducer, petroleum pipeline, strain controller and data-analyzing machine, there is similar function and structure with the corresponding component in embodiment mono-, embodiment bis-, and can adopt identical material or device to realize, repeat no more herein.

Pore water pressure sensor in the present embodiment can adopt the sensor realization that is usually used in measuring pore water pressure in soil body fields of measurement, it should be noted that, in the present embodiment, the strain controller of self-boring pressuremeter is by determining the pressure size of inflation of elastic membrane after the measurement result of the measurement result of pressure sensor and pore water pressure sensor is comprehensive, and data-analyzing machine is by the pressure size of determining after the measurement result of the measurement result of pressure sensor and pore water pressure sensor is comprehensive that the tested soil body is suffered, and in the pre-drilling type side pressure instrument that embodiment mono-and embodiment bis-provide, strain controller is only determined the pressure size of inflation of elastic membrane by the measurement result of pressure sensor, data-analyzing machine only determines by the measurement result of pressure sensor the pressure size that the tested soil body is suffered.

The self-boring pressuremeter that the present embodiment provides self has drill bit, therefore in use, can with this self-boring pressuremeter outside drilling apparatus be used in conjunction with, first the upper end of outer layer sleeve is fixedly connected with the outer drilling rod of outside drilling apparatus, and the upper end of inner layer sleeve is fixedly connected with the internal layer drilling rod of described outside drilling apparatus; After outside drilling apparatus starts, in the time of described internal layer drilling rod rotation, drive inner layer sleeve rotation, and then drive bit to creep into; In addition, in order to coordinate the water circulation system of outside drilling apparatus, the inside of described inner layer sleeve is for delivery of recirculated water to drill bit, and the space between described outer drilling rod and internal layer drilling rod and the space between outer layer sleeve and inner layer sleeve are for discharging the recirculated water of drill bit.In the course of work, described experimental rig is placed in boring, carries out the data acquisition task of pressurementer test, and described control device is placed in outside described boring, carries out the data analysis task of pressurementer test.

Self-boring pressuremeter that the present embodiment provides adopts strain controller to control to enter the hydraulic fluid flow rate of elastic membrane how many, during work, strain controller can be controlled the hydraulic fluid flow rate that enters elastic membrane according to the inflation of elastic membrane amount and the pressure size that measure in real time, thereby can make inflation of elastic membrane degree steady change, not only can avoid elastic membrane to occur because non-homogeneous expansion causes the phenomenon of breaking, and can guarantee the continuity of experimental data, reduce artifical influence factor, reduced testing error; In addition, the pre-drilling type side pressure instrument that the present embodiment provides adopts hydraulic oil as inflating medium, in the course of work, if elastic membrane is damaged, hydraulic oil can not leak rapidly from elastic membrane as the inflating medium of gaseous type, can avoid extraneous liquid to invade elastic membrane and cause the other circuit structure of instrument inside of pressing to be corroded, than prior art, the present embodiment can be implemented pressurementer test preferably, obtains more continuous result of the test, thereby can obtain the mechanics parameter of the actual response soil body.

Concrete, similar with embodiment mono-and embodiment bis-, the self-boring pressuremeter that the present embodiment provides also can adopt Of The Research Work On Bio-degradable Hydraulic Oil as inflating medium, with the problem of environmental pollution of avoiding bringing because of pressurementer test.

Preferably, described oil pump comprises fuel-displaced valve and oil return valve; Described petroleum pipeline comprises output oil pipe and reclaims oil pipe; Described self-boring pressuremeter also comprises data wire;

Concrete, similar with embodiment mono-and embodiment bis-, the self-boring pressuremeter that the present embodiment provides is by setting out fuel tap door, oil return valve, output oil pipe, reclaim oil pipe and data wire, can in pressurementer test, control better the input recovering state of hydraulic oil, thereby control better the degrees of expansion of elastic membrane, the continuity of guarantee test result, avoid elastic membrane to occur because non-homogeneous expansion causes the phenomenon of breaking, and, protected data line by hole outer while being deep in boring not by external interference, guaranteed pressure sensor and displacement transducer can be by measurement result with the mode safe transmission of corresponding signal to strain controller.

Described pressure sensor is fixed in described the first enclosure space;

Concrete, similar with embodiment mono-and embodiment bis-, in the self-boring pressuremeter that the present embodiment provides, device storehouse, upper collar and lower collar can adopt copper material to make; Between outer layer sleeve and upper collar and lower collar, can adopt and be threaded or snap fit is fixedly connected with; The object that device storehouse is set is the shape of support elastic film, and elastic membrane can be expanded with uniform cylinder form, can protect pressure sensor and displacement transducer normally to work simultaneously.

Fixed ring is fixedly connected with described upper collar;

Described lower retainer ring is fixedly connected with described lower collar;

Concrete, similar with embodiment mono-and embodiment bis-, in the present embodiment, elastic membrane protective sleeve is not scratched by the sharp material in the tested soil body for the protection of elastic membrane, can adopt metal material to make.

Embodiment tetra-

The present embodiment provides a concrete self-boring pressuremeter, as shown in Figure 2, this self-boring pressuremeter specifically comprises: outer layer sleeve 201, inner layer sleeve 217, drill bit 218, elastic membrane 202, pressure sensor 203, displacement transducer 204, pore water pressure sensor 219, permeable stone 220, device storehouse 205, upper collar 206, lower collar 207, elastic membrane protective sleeve 208, upper retainer ring 221, lower retainer ring 222, fuel tank 209, oil pump 210, strain controller 211, data-analyzing machine 212, output oil pipe 213, recovery oil pipe 214 and data wire 215; Oil pump 210 specifically comprises fuel-displaced valve 210A and oil return valve 210B;

Wherein, outer layer sleeve 201, inner layer sleeve 217, drill bit 218, elastic membrane 202, pressure sensor 203, displacement transducer 204, device storehouse 205, upper collar 206, lower collar 207, elastic membrane protective sleeve 208, upper retainer ring 221 and lower retainer ring 222 have formed the experimental rig of this self-boring pressuremeter jointly; Fuel tank 209, oil pump 210, strain controller 211 and data-analyzing machine 212 have formed the control device of this self-boring pressuremeter jointly; Fuel tank 209 is for storing Of The Research Work On Bio-degradable Hydraulic Oil;

In the present embodiment, the annexation of each device is as follows: outer layer sleeve 201, inner layer sleeve 217, device storehouse 205 and elastic membrane protective sleeve 208 are all copper tubular structure; The internal diameter of outer layer sleeve 201 is greater than the external diameter of inner layer sleeve 217, and outer layer sleeve 201 is sheathed on the outside of inner layer sleeve 217; The bottom of inner layer sleeve 217 is fixedly connected with drill bit 218, and inner layer sleeve 217 externally rotates under the drive of drilling equipment, drives drill bit 218 rotations simultaneously; Device storehouse 205 fixed covers are located at outer layer sleeve 201 outsides, its upper and lower two ends connect and fix with upper collar 206 and lower collar 207 respectively, the outer tube wall of the inner tube wall in device storehouse 205 and outer layer sleeve 201 forms the first enclosure space, is provided with through hole 216 on the barrel in device storehouse 205; Elastic membrane 202 is tubular caoutchouc elasticity film, be sheathed on 205 outsides, device storehouse, its upper end is clamped fixing by upper collar 206 and device storehouse 205, lower end is clamped fixing by lower collar 207 and device storehouse 205, and the outer tube wall in elastic membrane 202 inner surfaces and device storehouse 205 forms the second enclosure space; Elastic membrane protective sleeve 208 is sheathed on the outside of elastic membrane 202, its upper end is clamped fixing by upper end by upper collar 206 and device storehouse 205 respectively, lower end is clamped fixing by lower collar 207 and device storehouse 205, elastic membrane protective sleeve 208 can protect elastic membrane 202 to avoid the sharp material damage in tested soil; Pressure sensor 203 is fixed on the outer tube wall of outer layer sleeve 201, by data wire 215, is electrically connected to strain controller 211; Displacement transducer 204 is fixed on the outer tube wall of outer layer sleeve 201, by data wire 215, is electrically connected to strain controller 211, and the elastic piece structure of displacement transducer 204 stretches in the second enclosure space and contacts with the inner surface of elastic membrane 202 through through hole 216; Permeable stone 220 is through elastic membrane 202, and utilize screw to be fixed on the barrel in device storehouse 205, in elastic membrane 202, installing the part of permeable stone 220 is pushed down and does not expand by permeable stone 220, and elastic membrane 202 surfaces are connected with permeable stone 220 is airtight, have guaranteed that the hydraulic oil in elastic membrane 202 can not spill; The part that permeable stone 220 is exposed at elastic membrane 202 outsides contacts with the tested soil body, the part that is wrapped in elastic membrane 202 inside is communicated with pore water pressure sensor 219 by a pipeline 223 being arranged on device storehouse 205, pore water pressure sensor 219 is fixed on the barrel outside of outer layer sleeve 201, for measuring by the pressure of the tested soil body pore water of permeable stone 220;

Output oil pipe 213 one end connect the fuel-displaced valve 210A of oil pump 210, the other end stretches in the first enclosure space through the respective through hole on upper collar 206 and device storehouse 205 (not identifying in figure), be used for transmitting Of The Research Work On Bio-degradable Hydraulic Oil, data wire 215 is arranged in output oil pipe 213 simultaneously, and output oil pipe 213 can not be subject to external environmental interference by protected data line 215; Reclaim the oil return valve 210B that oil pipe 214 one end connect oil pump 210, the other end stretches in the first enclosure space through the respective through hole on upper collar 206 and device storehouse 205 (not identifying in figure), for transmitting Of The Research Work On Bio-degradable Hydraulic Oil; Data-analyzing machine 212 is electrically connected to strain controller 211;

The course of work of the self-boring pressuremeter that the present embodiment provides can REFERENCE TO RELATED embodiment six, does not repeat them here.

Embodiment five

The present embodiment provides a kind of self-drilling type side pressure equipment, and this self-drilling type side pressure equipment comprises: self-boring pressuremeter, drilling apparatus, water circle device and power set;

The present embodiment provides self-boring pressuremeter and the self-boring pressuremeter in embodiment tri-and embodiment tetra-in equipment similar, wherein, outer layer sleeve, inner layer sleeve, drill bit, elastic membrane, pressure sensor, displacement transducer, pore water pressure sensor, fuel tank, oil pump, strain controller and data-analyzing machine etc. all with embodiment tri-and embodiment tetra-in corresponding component there is similar function and structure, and can adopt identical material or device to realize, repeat no more herein.

Drilling apparatus in the present embodiment, water circle device and power set, can adopt drilling apparatus, water circle device and the power set that existing commercial borer system carries to realize.

The self-drilling type side pressure equipment that the present embodiment provides had both comprised Pang Ya instrument mechanism, comprise again drilling mechanism, when carrying out pressurementer test, need to not hole by outside drilling apparatus, only adopt this self-drilling type side pressure equipment can complete pressurementer test, to testing crew, provide convenience.This equipment in use, first starts drilling apparatus, by controlling elevating mechanism vertical lift to drive outer drilling rod and internal layer drilling rod vertical lifting or decline, and then drives outer layer sleeve, inner layer sleeve and drill bit vertical lifting or decline; Meanwhile, rig rotates by controlling internal layer drilling rod and inner layer sleeve, and then drives bit to creep into; Described water pump is transported to drill bit by output water pipe and internal layer drilling rod by the water in water tank, and space and the return water pipe of space, outer layer sleeve and inner layer sleeve by outer drilling rod and internal layer drilling rod are recycled to water tank by the water of output.In the course of work, described experimental rig is placed in boring, carries out the data acquisition task of pressurementer test, and described control device is placed in outside described boring; Carry out the data analysis task of pressurementer test.

Self-drilling type side pressure equipment that the present embodiment provides adopts strain controller to control to enter the hydraulic fluid flow rate of elastic membrane how many, during work, strain controller can be controlled the hydraulic fluid flow rate that enters elastic membrane according to the inflation of elastic membrane amount and the pressure size that measure in real time, thereby can make inflation of elastic membrane degree steady change, not only can avoid elastic membrane to occur because non-homogeneous expansion causes the phenomenon of breaking, and can guarantee the continuity of experimental data, reduce artifical influence factor, reduced testing error; In addition, the pre-drilling type side pressure instrument that the present embodiment provides adopts hydraulic oil as inflating medium, in the course of work, if elastic membrane is damaged, hydraulic oil can not leak rapidly from elastic membrane as the inflating medium of gaseous type, can avoid extraneous liquid to invade elastic membrane and cause the other circuit structure of instrument inside of pressing to be corroded, than prior art, the present embodiment can be implemented pressurementer test preferably, obtains more continuous result of the test, thereby can obtain the various parameters of reaction soil body truth.

In concrete enforcement, in described fuel tank, the hydraulic oil of storage can be Of The Research Work On Bio-degradable Hydraulic Oil, adopts Of The Research Work On Bio-degradable Hydraulic Oil as inflating medium, with the problem of environmental pollution of avoiding bringing because of pressurementer test.

In the self-drilling type side pressure equipment that the present embodiment provides, the self-boring pressuremeter structure providing as embodiment tetra-can be provided the concrete structure of described self-boring pressuremeter, can also comprise the structures such as device storehouse, upper collar, lower collar, output oil pipe, recovery oil pipe, fuel-displaced valve, oil return valve, specifically can, referring to embodiment tetra-, repeat no more herein.

Embodiment six

The present embodiment provides a concrete self-drilling type side pressure equipment, and as shown in Figure 3, this self-drilling type side pressure equipment comprises: self-boring pressuremeter, drilling apparatus, water circle device and power set 313;

Self-boring pressuremeter specifically comprises: experimental rig 301, control device 302, petroleum pipeline 303 and data wire 304; Wherein, experimental rig 301 specifically comprises outer layer sleeve, inner layer sleeve, drill bit, elastic membrane, pressure sensor, displacement transducer, permeable stone, pore water pressure sensor, device storehouse, upper collar, lower collar, elastic membrane protective sleeve, control device 302 specifically comprises fuel tank, oil pump, strain controller, data-analyzing machine, and petroleum pipeline 303 specifically comprises output oil pipe, reclaims oil pipe; Oil pump specifically comprises fuel-displaced valve and oil return valve; In fuel tank, store Of The Research Work On Bio-degradable Hydraulic Oil; In this self-boring pressuremeter, the annexation of each device can reference example four, repeats no more herein;

Drilling apparatus specifically comprises: rig 305, outer drilling rod 306, internal layer drilling rod (not shown), chuck 307; Wherein, rig 305 has elevating mechanism 308; The internal diameter of outer drilling rod 306 is greater than the external diameter of internal layer drilling rod, is sheathed on internal layer drilling rod outside, and its upper end is fixedly connected with elevating mechanism 308, and lower end is fixedly connected with outer layer sleeve; The upper end pivot joint elevating mechanism 308 of internal layer drilling rod, lower end is fixedly connected with inner layer sleeve; Rig 305 is for driving elevating mechanism 308 to rise or decline, and the rotation of driving internal layer drilling rod; When elevating mechanism 308 drives outer drilling rod 306 to suitable position, so that experimental rig 301 is when default testing position, chuck 307 is for outer drilling rod 306 is fixedly blocked, and then fixes the outer layer sleeve in boring, guarantees stably to carry out pressurementer test;

Water circle device comprises water tank 309, water pump 310, output water pipe 311, return water pipe 312; Wherein, described water pump 310 connects water tank 309; Output water pipe 311 connects respectively water pump 310 and internal layer drilling rod; Return water pipe 312 connects respectively water tank 309 and outer drilling rod 306; Water pump 310 is for being pumped into the water of water tank 309 inside of internal layer drilling rod and then arrival drill bit place by output water pipe 311; After boring is accomplished fluently, the water of drill bit can be discharged by the space between outer drilling rod 306 inner tube walls and internal layer drilling rod outer tube wall, and is back in water tank 309 by return water pipe 312;

Power set 313 connect respectively drilling apparatus and water circle device, for corresponding power is provided.

The course of work of the self-drilling type side pressure equipment that the present embodiment provides is as follows:

Step S61, starts drilling apparatus and water circle device;

Rig 305 drives internal layer drilling rod and inner layer sleeve to be rotated, and drives bit to creep into, and meanwhile, rig 305 vertically declines by controlling elevating mechanism 308, and then drives drill bit to decline;

Simultaneously, water pump 310 starts the water in water tank 309 to pump in internal layer drilling rod by output water pipe 311, flow through successively from top to bottom internal layer drilling rod, inner layer sleeve of recirculated water finally arrives drill bit place, then recirculated water is carrying the materials such as earth chip after bit cutting, space between space, outer layer sleeve and the inner layer sleeve of flowing through successively from top to bottom between outer drilling rod 306 and internal layer drilling rod, then arrive return water pipe 312, and then circulating water reclamation is arrived to water tank 309;

Step S62, in drill bit continuous decrease the process of creeping into, when the experimental rig 301 of self-boring pressuremeter has arrived after pre-set MTD (now the middle part of elastic membrane is that displacement transducer place is just in time positioned at pre-set MTD), close rig 305 so that drill bit stops operating and declines, adopt chuck 307 that outer drilling rod 306 is fixed simultaneously;

The fuel-displaced valve of opening oil pump slowly injects Of The Research Work On Bio-degradable Hydraulic Oil by output oil pipe in elastic membrane, and during beginning, because hydraulic oil flow velocity is slower, elastic membrane can not expand at once;

Along with hydraulic oil continues to be injected in elastic membrane, elastic membrane starts to expand and the tested soil body is around exerted pressure gradually, make the generation deformation of the tested soil body, now, pressure sensor, displacement transducer and pore water pressure sensor start to carry out to be measured, and by data wire 304, measurement result is sent to strain controller; Meanwhile, data-analyzing machine is obtained and is recorded the measurement result of pressure sensor, displacement transducer and pore water pressure sensor by strain controller;

Until inflation of elastic membrane to a certain extent time, strain controller control oil pump stops output hydraulic pressure oil, after determining the pressure stability of elastic membrane inside, strain controller is controlled oil return valve open to reclaim the hydraulic oil in elastic membrane, now because the pressure in elastic membrane is very large, understand that some hydraulic oil is directly extruded and return in fuel tank by reclaiming oil pipe, the pressure decreased in determining elastic membrane to a certain extent time, is closed oil return valve;

Again determine after the pressure stability in elastic membrane, strain controller is controlled fuel-displaced valve open again to injection liquid force feed in elastic membrane, and when the pressure of elastic membrane to be determined inside returns to the pressure reclaiming before hydraulic oil, first time stagnant ring manipulation completes;

Time stagnant ring manipulation number of times having required according to pressurementer test (pressurementer test General Requirements completes at least two and returns stagnant ring manipulation), repeats above-mentioned steps S62;

Step S63, after completing all times stagnant ring manipulations of pressurementer test regulation, strain controller is controlled fuel-displaced valve closing, and control oil return valve open, reclaim hydraulic oil, when this process starts, because the pressure in elastic membrane is larger, understand that some hydraulic oil is directly extruded and return in fuel tank by reclaiming oil pipe, but along with the pressure in elastic membrane reduces, and hydraulic oil has certain deadweight, only depend on the internal pressure of elastic membrane can not continue remaining hydraulic oil pressure oil sump tank, now, strain controller is opened the oil pumping function of oil pump, remaining hydraulic oil in elastic membrane is drawn back in fuel tank, thereby elastic membrane is shunk completely,

Step S64, after elastic membrane is shunk completely, the outer drilling rod 306 that makes chuck 307 unclamp being fixed, then rig 305 drives elevating mechanisms 308 to rise, and makes outer drilling rod 306, internal layer drilling rod and experimental rig 301 increase, and regains described each device;

Step S65, data-analyzing machine is according to the measurement result of the pressure sensor recording in this pressurementer test, displacement transducer and pore water pressure sensor, analyze the deformation quantity of the tested soil body and the relation between pressure size, draw out soil body pressure-soil body deformation quantity curve as shown in Figure 5; Finish this pressurementer test.

It should be noted that, in carrying out the process of above-mentioned steps S62 and step S63, strain controller should be controlled in the unit interval to the hydraulic pressure oil mass steady change of injecting or reclaiming in elastic membrane, with the continuity of guarantee test acquired results, make soil body pressure-soil body deformation quantity curve of finally drawing out enough level and smooth.

In sum, the embodiment of the present invention provides pre-drilling type side pressure instrument, self-boring pressuremeter and self-drilling type side pressure equipment comprise following beneficial effect:

(1) adopt control device to control to enter the hydraulic fluid flow rate of elastic membrane how many, in pressurementer test, control device can be controlled the hydraulic fluid flow rate that enters elastic membrane according to the inflation of elastic membrane amount and the pressure size that measure in real time, thereby can make inflation of elastic membrane degree steady change, reduce because the sudden change of elastic membrane internal pressure causes the possibility of damaging;

(2) adopt hydraulic oil as inflating medium, in the situation that elastic membrane is damaged, hydraulic oil can protect the other circuit structure of instrument inside of pressing not to be subject to extraneous liquid invade and cause being corroded;

(3) adopt Of The Research Work On Bio-degradable Hydraulic Oil as inflating medium, even if press instrument course of work Elastic film to damage on side, Of The Research Work On Bio-degradable Hydraulic Oil leaks in the tested soil body, also can react and be degraded into nontoxic material with natural microorganism, can contaminated soil environment, there is good environmental protection effect;

(4) the pressurementer test data that obtain have continuity, soil body pressure-soil body deformation quantity curve of drawing out is accordingly enough level and smooth, reduced the interference of human factor to result of the test, reduced testing error, result of the test can be reacted the correlation properties of the tested soil body more accurately.

(5) the present invention has promoted the performance of other pressure instrument, pre-drilling type side pressure instrument test pressure makes more than can reach 20MPa, more than the test pressure of self-boring pressuremeter reaches 10MPa, improved the stability of pressurementer test, not only facilitate rock-soil engineering in-situ test job, also make pressurementer test can be applied to other field, as used other mechanical property and crack characteristic of pressing instrument to measure hydrocarbon source rock or shale provided by the invention, improve the production efficiency of shale gas and other petroleum resources.

Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only specific embodiments of the invention; the protection domain being not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a pre-drilling type side pressure instrument, is characterized in that, comprising: experimental rig, control device and petroleum pipeline; Experimental rig specifically comprises main body cylinder, elastic membrane, pressure sensor and displacement transducer; Control device specifically comprises fuel tank, oil pump, strain controller and data-analyzing machine; Wherein,

2. pre-drilling type side pressure instrument according to claim 1, is characterized in that, in described fuel tank, the hydraulic oil of storage is Of The Research Work On Bio-degradable Hydraulic Oil.

3. pre-drilling type side pressure instrument according to claim 1, is characterized in that, described oil pump comprises fuel-displaced valve and oil return valve; Described petroleum pipeline comprises output oil pipe and reclaims oil pipe; Described pre-drilling type side pressure instrument also comprises data wire;

4. pre-drilling type side pressure instrument according to claim 1, is characterized in that, described experimental rig specifically also comprises: device storehouse, upper collar, lower collar; Wherein,

Described pressure sensor is fixed in described the first enclosure space;

5. pre-drilling type side pressure instrument according to claim 4, is characterized in that, described experimental rig also comprises elastic membrane protective sleeve, upper retainer ring and lower retainer ring; Wherein,

Fixed ring is fixedly connected with described upper collar;

Described lower retainer ring is fixedly connected with described lower collar;

6. a self-boring pressuremeter, is characterized in that, comprising: experimental rig, control device and petroleum pipeline; Experimental rig specifically comprises outer layer sleeve, inner layer sleeve, drill bit, elastic membrane, pressure sensor, displacement transducer, permeable stone and pore water pressure sensor; Control device specifically comprises fuel tank, oil pump, strain controller and data-analyzing machine; Wherein,

7. self-boring pressuremeter according to claim 6, is characterized in that, in described fuel tank, the hydraulic oil of storage is Of The Research Work On Bio-degradable Hydraulic Oil.

8. self-boring pressuremeter according to claim 6, is characterized in that, described oil pump comprises fuel-displaced valve and oil return valve; Described petroleum pipeline comprises output oil pipe and reclaims oil pipe; Described self-boring pressuremeter also comprises data wire;

9. self-boring pressuremeter according to claim 6, is characterized in that, described experimental rig specifically also comprises: device storehouse, upper collar, lower collar; Wherein,

Described pressure sensor is fixed in described the first enclosure space;

10. self-boring pressuremeter according to claim 9, is characterized in that, described experimental rig also comprises elastic membrane protective sleeve, upper retainer ring and lower retainer ring; Wherein,

Fixed ring is fixedly connected with described upper collar;

Described lower retainer ring is fixedly connected with described lower collar;

11. 1 kinds of self-drilling type side pressure equipments, is characterized in that, comprising: self-boring pressuremeter, drilling apparatus, water circle device and power set;