CN102926369A

CN102926369A - Pre-boring pressure meter, self-boring pressure meter and self-boring pressure metering equipment

Info

Publication number: CN102926369A
Application number: CN2012104583965A
Authority: CN
Inventors: 刘潋
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-14
Filing date: 2012-11-14
Publication date: 2013-02-13
Anticipated expiration: 2032-11-14
Also published as: CN102926369B

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 be utilize be installed in other press on the instrument the expansion of elastic membrane in soil to around the soil body apply uniform pressure, analyze a kind of home position testing method of the soil body mechanical property such as intensity that the pressure that records and soil deformation the relationship between quantities extrapolate 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 hydraulic pressure is entered other inflation of elastic membrane to be exerted pressure after pressing instrument to the soil body, institute's applied pressure is by the compression pump record, expand with the cylinder form based on the hypothesis elastic membrane, the soil deformation amount can be by the volume representative 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, by the displacement that the method for the volume conversion swell increment of water can not accurately be measured a certain ad-hoc location soil, therefore the original other accuracy of instrument of pressing is lower.Modern times, the other instrument of pressing was to press the inner setting pressure of instrument and displacement transducer on the side, 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 accurate credible; Because the modern other inside of instrument of pressing all is equipped 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, be pressed into gas in the instrument and make inflation of elastic membrane thereby namely press to the side.

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

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 need to increase air inflow or reduce air inflow, the shortcoming of doing like this is to have increased artifical influence factor in process of the test, make that test obtains soil body pressure-soil body deformation quantity curve is unsmooth, thereby cause data analysis subsequently to produce error.Because the other instrument of pressing is placed in the darker position of underground, when open on the ground valve make gas enter other press instrument after, 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 the gas inlet is inadequate, and the increase air inflow, after observing the suddenly increase of other pressure instrument internal pressure, reduce or valve-off again at once, will cause like this trial curve too discrete, and can not carry out subsequently analysis, other pressure of pressing instrument inside increases suddenly or reduces in addition, also easily causes elastic membrane to be broken, thereby so that pressurementer test fall flat.

In sum, although modern other pressure of pressing instrument accurately to measure to impose on the soil body and the deflection of the soil body adopt gas as inflating medium and adopt manually control to enter the other mode of the inflating medium amount of instrument of pressing and but brought considerable restraint to the use of modern other pressure instrument.

Summary of the invention

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

To achieve these goals, the embodiment of the 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 the fuel tank;

One end of described petroleum pipeline connects oil pump, and the other end connects described main body cylinder, be used for to the inner input hydraulic pressure oil 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 the hydraulic oil of petroleum pipeline retrieval body cylinder inside and described enclosure space is 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 the described enclosure space, is used for measuring the hydraulic oil pressure in the described enclosure space;

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

Described strain controller is Bonding pressure sensor, displacement transducer and oil pump respectively, is used 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 the strain controller, be used for obtaining and recording the measurement result of pressure sensor and displacement transducer, determine that according to the measurement result of pressure sensor described elastic membrane imposes on the pressure size of the tested soil body, determine the soil body deformation quantity of the tested soil body according to the measurement result of displacement transducer, analyze the deformation quantity of the tested soil body and the relation between the pressure size.

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

Preferably, in the 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 with hydraulic oil;

Described recovery oil pipe one end connects the 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 pass described the first through hole, the one end connects described strain controller, the other end connects respectively described pressure sensor and displacement transducer, is used for the measurement result of pressure sensor and displacement transducer is transferred to described strain controller.

Preferably, in the 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 the 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, be provided with the second through hole on the barrel in device storehouse, 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 passes described the second through hole and stretch into and contact with the elastic membrane inner surface in the second enclosure space;

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 when being filled with the second enclosure space by described the second through hole, described inflation of elastic membrane; When the hydraulic oil of 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, and when being expelled to main body cylinder inside by the first enclosure space again, described elastic membrane is shunk.

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

The 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 kind of 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,

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

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

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

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

Described pore water pressure sensor is fixed in the described enclosure space; Described permeable stone passes described elastic membrane and is connected with elastomeric film surface is airtight, and the 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 used for measuring the pressure by the tested soil body pore water of described permeable stone infiltration;

Described strain controller is Bonding pressure sensor, displacement transducer, pore water pressure sensor and oil pump respectively, be used 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 the strain controller, be used for obtaining and recording the measurement result of pressure sensor, displacement transducer and pore water pressure sensor, determine that according to the measurement result of pressure sensor and pore water pressure sensor described elastic membrane imposes on the pressure size of the tested soil body, determine the soil body deformation quantity of the tested soil body according to the measurement result of displacement transducer, analyze the deformation quantity of the tested soil body and the relation between the pressure size;

During use, described experimental rig places boring, and described control device places outside the 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, rotates under the drive of described internal layer drilling rod; To drill bit, the space between described outer layer sleeve and the inner layer sleeve is used for discharging the recirculated water of drill bit for delivery of recirculated water in the inside of described inner layer sleeve.

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

Preferably, in the 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 the described enclosure space, and described oil pump is input to hydraulic oil in the described enclosure space by fuel-displaced valve and output oil pipe;

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

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

Preferably, in the 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 the 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, are provided with through hole on the barrel in device storehouse;

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 passes described through hole and stretch into and contact with the elastic membrane inner surface in the second enclosure space;

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 that is 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 the hydraulic oil of inputting in described the first enclosure space when petroleum pipeline is filled with the second 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 was expelled to the first enclosure space by described through hole, described springform was shunk.

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

The fixed ring is fixedly connected with described upper collar;

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

A kind of self-drilling type side pressure equipment comprises: 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, but described rig has the elevating mechanism of 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 installed in outer drilling rod inner less than the internal diameter of described outer drilling rod, and its upper end articulates described elevating mechanism, and the 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; The 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 places boring, and described control device places outside the described boring; Driving outer drilling rod and internal layer drilling rod vertical lifting or decline, and rig rotates to drive bit by control internal layer drilling rod and inner layer sleeve to described rig by control elevating mechanism vertical lift; Described water pump is transported to drill bit by output water pipe and internal layer drilling rod with the water in the water tank, and by space and the return water pipe of outer drilling rod and internal layer drilling rod the water of exporting 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 control enter elastic membrane hydraulic fluid flow rate what; 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 of the phenomenon that non-homogeneous expansion causes breaking; and can guarantee the continuity of experimental data; if elastic membrane is damaged simultaneously; then hydraulic oil can be protected the circuit structure of other pressure instrument inside not to be subjected to extraneous liquid intrusion and cause being corroded; than prior art; the embodiment of the invention greatly reduces artifical influence factor; reduce testing error, guaranteed normally carrying out of pressurementer test.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the accompanying drawing of required use was done to introduce simply during the below will describe embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying 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 invention two;

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

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

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

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

The specific embodiment

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

In view of adopting gas as inflating medium and use manual methods control to enter the other inflating medium amount of instrument of pressing, existing pressurementer test technology easily causes the pressurementer test failure, the embodiment of the 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 defective of above-mentioned existing pressurementer test technology.The present invention is described in detail below in conjunction with accompanying drawing.

Embodiment one

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 has the preferably elastomeric material of dilation performance, for example can adopt the existing other instrument elastomeric material commonly used of pressing to make; Pressure sensor can adopt in the industry commonly used can gaging pressure and measurement result realized with the sensor that the form of the signal of telecommunication transfers out; Displacement transducer can adopt in the industry commonly used can be measured displacement and measurement result is realized with the sensor that the form of the signal of telecommunication transfers out; Petroleum pipeline is for stretching into the tubular structure that hydraulic oil is provided for side pressure instrument in the boring outside 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 that uses in the petroleum industry as petroleum pipeline.

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

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

Because the pre-drilling type side pressure instrument self that the present embodiment provides 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 boring, carry out pressurementer test, the control device that simultaneously described boring is outer 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 adopt the control of strain controller enter elastic membrane hydraulic fluid flow rate what, during work, the 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 intrusion 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 to react the mechanics parameter of the true soil body.

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

Concrete; the present embodiment adopts Of The Research Work On Bio-degradable Hydraulic Oil as inflating medium; when being pressed into Of The Research Work On Bio-degradable Hydraulic Oil in the other elastic membrane of pressing instrument; even press instrument course of work Elastic film to damage on the side; this kind hydraulic fluid leak is in the tested soil body (for example groundwater environment or marine environment); can react with natural microorganism and be degraded into nontoxic material, can the contaminated soil environment, have preferably 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 to divide to input hydraulic pressure oil in the elastic membrane and the pipeline road that from elastic membrane, reclaims hydraulic oil 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, guarantee test result's continuity avoids elastic membrane to occur because of the phenomenon that non-homogeneous expansion causes breaking.

Concrete; for guarantee pressure sensor and displacement transducer can be with measurement result with the mode safe transmission of corresponding signal to the strain controller; the present embodiment provides data wire that pressure sensor and displacement transducer are connected to the strain controller; and make data wire pass output oil pipe, when being deep in the boring with the protected data line by boring is outer 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; Can adopt between main body cylinder and upper collar and the lower collar and be threaded or snap fit is fixedly connected with; The purpose that the device storehouse is set is the shape of support elastic film, and elastic membrane can be expanded with uniform cylinder form, can protect the normal operation of pressure sensor and displacement transducer simultaneously.

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

The 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 consists of this elastic membrane protective sleeve is gathered and is attached to the elastic membrane external surface; along with inflation of elastic membrane; each metal strip launches, and is not scratched by the hard objects in the tested soil body for the protection of elastic membrane.

Embodiment two

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, lower retainer ring 119 and the electronic instrument storehouse 120 common experimental rigs that form this pre-drilling type side pressure instrument; Fuel tank 109, oil pump 110, strain controller 111 and the data-analyzing machine 112 common control device that form this pre-drilling type side pressure instrument; Store Of The Research Work On Bio-degradable Hydraulic Oil in the fuel tank 109;

The annexation of each device is as follows in the present embodiment: main body cylinder 101, device storehouse 105 and elastic membrane protective sleeve 108 all are copper tubular structure; Be provided with the first through hole 116 on the barrel of main body cylinder 101; Device storehouse 105 fixed covers are located at main body cylinder 101 outsides, it connects and fixes with upper collar 106 and lower collar 107 respectively at two ends up and down, 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, the 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 the upper end by upper retainer ring 118 and upper collar 106, the 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 sharp material damage in the tested soil; Pressure sensor 103 is fixed on the outer tube wall of main body cylinder 101, is electrically connected strain controller 111 by data wire 115; Displacement transducer 104 is fixed on the outer tube wall of main body cylinder 101, is electrically connected strain controllers 111 by data wire 115, and the elastic piece structure of displacement transducer 104 passes the second through hole 117 and stretches in the second enclosure space and contact with the inner surface of elastic membrane 102; The lower end of main body cylinder is fixed in electronic instrument storehouse 120, and its inside is equiped with the instrument (such 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 1 ends connect the fuel-displaced valve 110A of oil pump 110, the other end connects main body cylinder, be used for to the inner input of main body cylinder Of The Research Work On Bio-degradable Hydraulic Oil, data wire 115 is arranged in the output oil pipe 113 simultaneously, and output oil pipe 113 can not be subjected to external environmental interference by protected data line 115; Reclaim the oil return valve 110B that oil pipe 114 1 ends connect oil pump 110, the other end connects main body cylinder, is used for the Of The Research Work On Bio-degradable Hydraulic Oil of retrieval body cylinder inside; Data-analyzing machine 112 is electrically connected 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, at first utilize the drilling equipment outside this pre-drilling type side pressure instrument to hole, then the drilling rod with drilling equipment is fixedly connected with the main body cylinder of this pre-drilling type side pressure instrument, elevating mechanism by drilling equipment, the experimental rig of this pre-drilling type side pressure instrument is sent in the pre-drilled boring, after arriving predetermined test position, control device for opening;

Step S12, oil pump 110 pumps into main body cylinder 101 inside with the Of The Research Work On Bio-degradable Hydraulic Oil in the 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 begun elastic membrane 102 deformation has not occured, 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 begins to stretch, and displacement transducer 104 is determined the deformation quantity of elastic membrane 102 by the deformation of self elastic piece structure; Simultaneously, the hydraulic oil pressure in pressure sensor 103 measurements the first enclosure space;

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

After again determining the pressure stability in the 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 returned to the pressure that reclaims before the hydraulic oil, the stagnant ring manipulation of first time was finished;

Time stagnant ring manipulation number of times (the pressurementer test General Requirements is finished at least two and returned stagnant ring manipulation) according to the pressurementer test requirement is finished repeats above-mentioned steps S12 and step S13;

It is to be noted, carry out in the process of the stagnant circle of each time, 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 pressure size of deformation quantity and the elastic membrane internal hydraulic pressure oil of elastic membrane according to the result of real-time acquisition, simultaneously control enters the hydraulic fluid flow rate of elastic membrane 102, so that the degrees of expansion steady change of elastic membrane, not only reduce because elastic membrane 102 internal pressures are suddenlyd change and cause the possibility damaged, and guaranteed the continuity of experimental data; In addition, data-analyzing machine 112 obtains and records the measurement result of pressure sensor 103 and displacement transducer 104 by strain controller 111, and determine the suffered pressure of tested soil body size according to the result that pressure sensor 103 measures, the result who measures according to displacement transducer 104 determines the deformation quantity of the tested soil body, analyze the deformation quantity of the tested soil body and the relation between the pressure size, and then the mechanics parameter of the more soil bodys of acquisition, such as cohesive strength, angle of internal friction, divergence cone angle, rigidity, intensity etc.;

Step S14, finish after the stagnant ring manipulation of all times of pressurementer test regulation, strain controller 111 control oil pumps 110 reclaim Of The Research Work On Bio-degradable Hydraulic Oil, when this process begins, because the pressure in the elastic membrane 102 is larger, understanding some Of The Research Work On Bio-degradable Hydraulic Oil is directly extruded and is returned in the fuel tank 109, but along with the pressure in the 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, at this moment, strain controller 111 is opened the oil pumping function of oil pump 110, remaining Of The Research Work On Bio-degradable Hydraulic Oil in the elastic membrane is drawn back in the fuel tank 109, thereby elastic membrane 102 is shunk fully;

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

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

Embodiment three

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, can not have influence on fixed outer layer sleeve during with the rotation of assurance inner layer sleeve; Drill bit is the drilling mechanism of this self-boring pressuremeter, is fixedly connected on the inner layer sleeve lower end, can together rotary drilling when inner layer sleeve rotates;

Elastic membrane in the present embodiment, pressure sensor, displacement transducer, petroleum pipeline, strain controller and data-analyzing machine, has similar function and structure with the corresponding component among embodiment one, the embodiment two, 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 the soil body fields of measurement; Need to prove, in the present embodiment, the strain controller of self-boring pressuremeter passes through the comprehensive rear pressure size of determining inflation of elastic membrane of the measurement result of the measurement result of pressure sensor and pore water pressure sensor, and data-analyzing machine passes through the comprehensive rear pressure size of determining that the tested soil body is suffered of the measurement result of the measurement result of pressure sensor and pore water pressure sensor, and in the pre-drilling type side pressure instrument that embodiment one and embodiment two provide, the strain controller is only determined the pressure size of inflation of elastic membrane by the measurement result of pressure sensor, data-analyzing machine is only determined the pressure size that the tested soil body is suffered by the measurement result of pressure sensor.

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, namely 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, drive the inner layer sleeve rotation in the time of described internal layer drilling rod rotation, and then the drive bit creeps into; In addition, in order to cooperate the water circulation system of outside drilling apparatus, to drill bit, the space between described outer drilling rod and the internal layer drilling rod and the space between outer layer sleeve and the inner layer sleeve are used for discharging the recirculated water of drill bit for delivery of recirculated water in the inside of described inner layer sleeve.In the course of work, described experimental rig places boring, carries out the data acquisition task of pressurementer test, and described control device places outside the described boring, carries out the data analysis task of pressurementer test.

Self-boring pressuremeter that the present embodiment provides adopt the control of strain controller enter elastic membrane hydraulic fluid flow rate what, during work, the 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 of the phenomenon that non-homogeneous expansion causes 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 intrusion 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 one and embodiment two, 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 one and embodiment two; the self-boring pressuremeter that the present embodiment provides is by setting out the fuel tap door; the 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; guarantee test result's continuity; avoid elastic membrane to occur because of the phenomenon that non-homogeneous expansion causes breaking; and; when the protected data line is deep in the boring by boring is outer not by external interference, guaranteed pressure sensor and displacement transducer can be with measurement result with the mode safe transmission of corresponding signal to the strain controller.

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

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

The fixed ring is fixedly connected with described upper collar;

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

Concrete, similar with embodiment one and embodiment two, in the present embodiment, the 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 four

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 used for the storage Of The Research Work On Bio-degradable Hydraulic Oil;

The annexation of each device is as follows in the present embodiment: outer layer sleeve 201, inner layer sleeve 217, device storehouse 205 and elastic membrane protective sleeve 208 all are 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 simultaneously drill bit 218 rotations; Device storehouse 205 fixed covers are located at outer layer sleeve 201 outsides, it connects and fixes with upper collar 206 and lower collar 207 respectively at two ends up and down, 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, the 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 for having elasticity, be sheathed on the outside of elastic membrane 202, its upper end is clamped fixing by the upper end by upper collar 206 and device storehouse 205 respectively, the 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 sharp material damage in the tested soil; Pressure sensor 203 is fixed on the outer tube wall of outer layer sleeve 201, is electrically connected strain controller 211 by data wire 215; Displacement transducer 204 is fixed on the outer tube wall of outer layer sleeve 201, is electrically connected strain controllers 211 by data wire 215, and the elastic piece structure of displacement transducer 204 passes through hole 216 and stretches in the second enclosure space and contact with the inner surface of elastic membrane 202; Permeable stone 220 passes elastic membrane 202, and utilize screw to be fixed on the barrel in device storehouse 205, the part of installing permeable stone 220 is pushed down and is not expanded by permeable stone 220 on the elastic membrane 202, and elastic membrane 202 surfaces and 220 airtight connections of permeable stone have guaranteed that the hydraulic oil in the 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 that is arranged on the device storehouse 205, pore water pressure sensor 219 is fixed in the barrel outside of outer layer sleeve 201, is used for measuring the pressure by the tested soil body pore water of permeable stone 220;

Output oil pipe 213 1 ends connect the fuel-displaced valve 210A of oil pump 210, the respective through hole (not identifying among the figure) that the other end passes on collar 206 and the device storehouse 205 stretches in the first enclosure space, be used for the transmission Of The Research Work On Bio-degradable Hydraulic Oil, data wire 215 is arranged in the output oil pipe 213 simultaneously, and output oil pipe 213 can not be subjected to external environmental interference by protected data line 215; Reclaim the oil return valve 210B that oil pipe 214 1 ends connect oil pump 210, the respective through hole (not identifying among the figure) that the other end passes on collar 206 and the device storehouse 205 stretches in the first enclosure space, is used for the transmission Of The Research Work On Bio-degradable Hydraulic Oil; Data-analyzing machine 212 is electrically connected strain controller 211;

But the course of work REFERENCE TO RELATED embodiment six of the self-boring pressuremeter that the present embodiment provides 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 among embodiment three and the embodiment four in the 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 three and embodiment four in corresponding component have 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, drilling apparatus, water circle device and the power set that can adopt existing commercial borer system to carry are realized.

The self-drilling type side pressure equipment that the present embodiment provides had both comprised the other instrument mechanism that presses, comprise again drilling mechanism, when carrying out pressurementer test, need to not hole by the drilling apparatus of outside, only adopt this self-drilling type side pressure equipment can finish pressurementer test, provide convenience to testing crew.This equipment at first starts drilling apparatus in use, driving 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 by control elevating mechanism vertical lift; Simultaneously, rig is by control internal layer drilling rod and inner layer sleeve rotation, and then the drive bit creeps into; Described water pump is transported to drill bit by output water pipe and internal layer drilling rod with the water in the 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 with the water of exporting.In the course of work, described experimental rig places boring, carries out the data acquisition task of pressurementer test, and described control device places outside the described boring; Carry out the data analysis task of pressurementer test.

Self-drilling type side pressure equipment that the present embodiment provides adopt the control of strain controller enter elastic membrane hydraulic fluid flow rate what, during work, the 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 of the phenomenon that non-homogeneous expansion causes 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 intrusion 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 to react the various parameters of soil body truth.

In the implementation, the hydraulic oil of storage can be Of The Research Work On Bio-degradable Hydraulic Oil in the described fuel tank, namely 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 that provides such as embodiment four can be provided the concrete structure of described self-boring pressuremeter, namely 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 four, 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; Store Of The Research Work On Bio-degradable Hydraulic Oil in the fuel tank; But the annexation reference example four of each device repeats no more herein in this self-boring pressuremeter;

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 sheathed on the internal layer drilling rod outside greater than the external diameter of internal layer drilling rod, and its upper end is fixedly connected with elevating mechanism 308, and the lower end is fixedly connected with outer layer sleeve; The upper end of internal layer drilling rod articulates elevating mechanism 308, and the lower end is fixedly connected with inner layer sleeve; Rig 305 is used for driving elevating mechanism 308 and rises or descend, and drives the rotation of internal layer drilling rod; When elevating mechanism 308 drives outer drilling rod 306 to suitable position, so that experimental rig 301 is when being in default testing position, chuck 307 is used for outer drilling rod 306 is fixedly blocked, and then fixes the outer layer sleeve in the 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 used for the water of water tank 309 is pumped into the inside of internal layer drilling rod by output water pipe 311, and then arrives the drill bit place; After boring was accomplished fluently, the water of drill bit can be discharged by the space between outer drilling rod 306 inner tube walls and the internal layer drilling rod outer tube wall, and is back in the water tank 309 by return water pipe 312;

Power set 313 connect respectively drilling apparatus and water circle device, are used for providing corresponding power.

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 the internal layer drilling rods and inner layer sleeve is rotated, and drives bit and creep into, and simultaneously, rig 305 vertically descends by control elevating mechanism 308, and then drives drill bit decline;

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

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

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

Along with hydraulic oil continues to be injected in the elastic membrane, elastic membrane begins to expand and the tested soil body is on every side exerted pressure gradually, make the generation deformation of the tested soil body, at this moment, pressure sensor, displacement transducer and pore water pressure sensor begin to carry out to be measured, and by data wire 304 measurement result is sent to the strain controller; Simultaneously, data-analyzing machine obtains and records the measurement result of pressure sensor, displacement transducer and pore water pressure sensor by the strain controller;

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

After again determining the pressure stability in the elastic membrane, the strain controller is controlled fuel-displaced valve open injection liquid force feed in the elastic membrane again, and when the pressure of elastic membrane to be determined inside returned to the pressure that reclaims before the hydraulic oil, the stagnant ring manipulation of first time was finished;

Time stagnant ring manipulation number of times (the pressurementer test General Requirements is finished at least two and returned stagnant ring manipulation) according to the pressurementer test requirement is finished repeats above-mentioned steps S62;

Step S63, finish after the stagnant ring manipulation of all times of pressurementer test regulation, the strain controller is controlled fuel-displaced valve closing, and control oil return valve open, reclaim hydraulic oil, when this process begins, because the pressure in the elastic membrane is larger, understand that some hydraulic oil is directly extruded and return in the fuel tank by reclaiming oil pipe, but along with the pressure in the 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, at this moment, the strain controller is opened the oil pumping function of oil pump, remaining hydraulic oil in the elastic membrane is drawn back in the fuel tank, thereby elastic membrane is shunk fully;

Step S64, after elastic membrane is shunk fully, the outer drilling rod 306 that makes chuck 307 unclamp being fixed, then rig 305 drives elevating mechanisms 308 and rises, and outer drilling rod 306, internal layer drilling rod and experimental rig 301 are risen, regains described each install;

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

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

In sum, the pre-drilling type side pressure instrument, self-boring pressuremeter and the self-drilling type side pressure equipment that provide of the embodiment of the invention comprises following beneficial effect:

(1) adopt control device control enter elastic membrane hydraulic fluid flow rate what, 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 elastic membrane internal pressure is suddenlyd change and cause the possibility damaged;

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

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

(4) the pressurementer test data that obtain have continuity, the soil body pressure of drawing out accordingly-soil body deformation quantity curve is 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, make pre-drilling type side pressure instrument test pressure can reach more than the 20MPa, the test pressure of self-boring pressuremeter reaches more than the 10MPa, improved the stability of pressurementer test, not only facilitate the rock-soil engineering in-situ test job, also so that pressurementer test can be applied to other field, as using 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; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; the protection domain that is 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., all should be included within 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, the hydraulic oil of storage is Of The Research Work On Bio-degradable Hydraulic Oil in the described fuel tank.

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,

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

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,

The fixed ring is fixedly connected with described upper collar;

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

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