Deep hole rock/upper in-situ test robot
Technical field
The utility model relates to a kind of deep hole rock/upper in-situ test robot, belongs to geotechnical engineering investigation technical field.
Background technology
The physical and mechanical parameter of rock mass is the data on basis, if can not get exact value, to Intensity Design, deformation analysis, the stability of any rock mass engineering project, just can not get accurate design and evaluate, so most engineering discipline has safety coefficient to increase safe guarantee.For colliery engineering, relate to the design basis data of roadway support, clearly will record the mechanics parameter of roadway surrounding rock, ensure the rationality of design of its support, economical cost and duration; The expansion rate of relaxation zone, scope and propagation law etc.; Country rock is numerical simulation under unloading condition, and the mechanics parameter that also accurately will obtain country rock each layer rock mass just can obtain desirable result.
Rock mass in-situ test prepares test specimen at the scene, and model engineering effect applies external load to rock mass, and then ask for the test method of Mechanics Parameters of Rock Mass, is one of important means of geotechnical engineering investigation.The great advantage of rock mass in-situ test is little to rock mass disturbance, maintains natural structure and the ambient condition of rock mass as much as possible, makes the Mechanics Parameters of Rock Mass measured directly perceived, accurately.
Main failure mode under rock mass outer load and Unloading Effect is shear failure, and therefore, rock mass in-situ test mainly accurately records the shearing strength of rock mass.At present, the shearing strength test of rock mass is only limited to be tested the rock mass test block collected with direct shear apparatus on the ground, can record cohesive strength and the angle of internal friction value of rock mass, cohesive strength and angle of internal friction value are the important indicators of rock mass strength, and it represents the performance of rock mass opposing shear failure.But owing to having departed from ambient stress in situ with the test block of direct shear apparatus test rock mass on the ground, therefore the data that test reflects still have certain one-sidedness, and measurement result is not accurate enough, and measuring equipment is heavier, uses inconvenience, and the test duration is long.
Utility model content
The defect that existing shear strength of rock measuring technology measurement result is not accurate enough in order to overcome, the test duration is long, the utility model provides a kind of deep hole rock/upper in-situ test robot, to record the indexs such as the shearing strength of stress rock/upper in situ accurately and rapidly.
The technical solution of the utility model is as follows:
A kind of deep hole rock/upper in-situ test robot, comprise control device, shell, first propulsion system group, stationary installation under hole, sample preparation sampler, second propulsion system group, vertical pressure plate, horizontal pressure plate, pressure transducer, signals collecting and after-treatment system, under described hole, stationary installation embeds and is arranged on outside shell, described sample preparation sampler is arranged on the lower end of shell, described first propulsion system group, second propulsion system group, vertical pressure plate and horizontal pressure plate are arranged in the enclosure, described first propulsion system group comprises propulsion system one and propulsion system two, propulsion system one and sample preparation sampler are in transmission connection, propulsion system two are in transmission connection with stationary installation under hole, and can release along the transverse direction of shell and regain stationary installation under hole, under described hole, stationary installation is used for a certain precalculated position be fixed on by whole in-situ test robot when it laterally releases in deep hole, described second propulsion system group comprises propulsion system three and propulsion system four, described propulsion system three are connected with vertical pressure plate by vertical loading mechanism, described propulsion system four are contacted with horizontal pressure plate by horizontal addload mechanism, described propulsion system one, propulsion system two, propulsion system three and propulsion system four are all connected with control device and controlled device controls, described vertical pressure plate and horizontal pressure plate are provided with the sensor at least comprising pressure transducer, described sensor is connected with signals collecting and after-treatment system by signal cable.
Preferably, described propulsion system two-way crosses leading screw one, under transmission nut and connecting rod and hole, stationary installation is in transmission connection, described leading screw one is connected with the power output shaft of propulsion system two, leading screw one is provided with two transmission nuts, the both sides of each transmission nut are respectively provided with a tie point, under described hole, stationary installation is oppositely arranged by two and identical pressured of structure forms, each pressured is made up of a vertical pressured portion and the two level connection joint portions kept at a certain distance away, the lateral surface undulate in described pressured portion, each level connection joint portion is provided with a tie point, the tie point in each level connection joint portion is connected by connecting rod with the tie point of respective side on adjacent drive nut.
Preferably, described vertical loading mechanism comprises leading screw two and screw-driven pressure head, one end of leading screw two is connected with the power output shaft of propulsion system three, and the other end is connected with the long threaded hole of screw-driven pressure head one end, and the other end of screw-driven pressure head is connected with vertical pressure plate.
For ease of applying multistage load by test request, preferably, propulsion system three and propulsion system four are decelerating step motor.
For ease of observing and test environment under control punch, preferably, the part of its lower end close of described shell is provided with visual device.
For ease of controlling the sample preparation of sample preparation sampler micro-disturbance, sampling, preferably, propulsion system one are decelerating step motor.
Preferably, described signal cable passes through the top of shell and sidewall.
Deep hole rock/upper in-situ test robot of the present utility model is by adopting micro-disturbance sampling under stress state in position, sample preparation, under hole, equipment is fixed, two to loading, the technology such as test data processes automatically, make deep hole rock/upper in-situ test robot can in any degree of depth, various rock/upper, test under the hole of various water percentage, and accurately, obtain the multinomial intensity indexs such as the shearing strength of tested rock/upper rapidly, overcome existing shear strength of rock measuring technology measurement result not accurate enough, the defect that test duration is long, fully meet the requirement of the indices of on-the-spot test.
The utility model has that integrated level is high, lightweight, portable, intelligence degree is high, flexible operation, test advantage accurately and rapidly, the engineering test of various rock/upper can be widely used in, for the designs such as Geotechnical Engineering, hydraulic engineering, Tunnel Engineering, mining engineering provide basic data, for numerical simulation provides reliable mechanics parameter basic data.
Accompanying drawing explanation
Fig. 1 is the structural principle schematic diagram of the deep hole rock/upper in-situ test robot of the utility model embodiment;
Fig. 2 is the propulsion system two of the present embodiment and the schematic diagram that is in transmission connection of stationary installation under hole;
Fig. 3 is the propulsion system three of the present embodiment and the schematic diagram that is in transmission connection of vertical pressure plate;
In figure: 1, joint; 2, control device; 3, stationary installation under hole; 4, the first propulsion system group; 5, the second propulsion system group; 6, chamber inner fixing device; 7, shell; 8, perpendicular pressure plate; 9, horizontal vertical pressure plate, 10, visual device; 11, sample preparation sampler; 12, propulsion system two; 13, propulsion system three; 14, leading screw one; 15, transmission nut; 16, connecting rod; 17, leading screw two; 18, screw-driven pressure head.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, carry out clear, complete description to the technical scheme in the utility model embodiment, obviously, described embodiment is a part of embodiment of the present utility model, instead of whole embodiments.Based on the embodiment in the utility model, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of the utility model protection.
With reference to shown in Fig. 1 ~ 3, the deep hole rock/upper in-situ test robot of the present embodiment comprises control device 2, shell 7, first propulsion system group 4, stationary installation 3 under hole, sample preparation sampler 11, second propulsion system group 5, vertical pressure plate 8, horizontal pressure plate 9, pressure transducer, signals collecting and after-treatment system, under hole, stationary installation 3 embeds and is arranged on outside shell 7, sample preparation sampler 11 is arranged on the lower end of shell 7, first propulsion system group 4, second propulsion system group 5, vertical pressure plate 8 and horizontal pressure plate 9 are arranged in shell 7, first propulsion system group 4 comprises propulsion system one and propulsion system 2 12, propulsion system one and sample preparation sampler 11 are in transmission connection, propulsion system 2 12 are in transmission connection with stationary installation 3 under hole, and can release along the transverse direction of shell 7 and regain stationary installation 3 under hole, under hole, stationary installation 3 is for being fixed on a certain precalculated position in deep hole by whole in-situ test robot when it laterally releases, second propulsion system group 5 comprises propulsion system 3 13 and propulsion system four, propulsion system 3 13 are connected with vertical pressure plate 8 by vertical loading mechanism, propulsion system four are contacted with horizontal pressure plate 9 by horizontal addload mechanism, propulsion system one, propulsion system 22, propulsion system 3 13 and propulsion system four are all connected with control device 2 and controlled device 2 controls, vertical pressure plate 8 and horizontal pressure plate 9 are provided with the sensor at least comprising pressure transducer, sensor is connected with signals collecting on the ground and after-treatment system by signal cable.
Preferably, propulsion system 2 12 are by leading screw 1, transmission nut 15 and connecting rod 16 are in transmission connection with stationary installation 3 under hole, leading screw 1 is connected with the power output shaft of propulsion system 2 12, leading screw 1 is provided with two transmission nuts 15, the both sides of each transmission nut 15 are respectively provided with a tie point, under hole, stationary installation 3 is oppositely arranged by two and identical pressured of structure forms, each pressured is made up of a vertical pressured portion and the two level connection joint portions kept at a certain distance away, the lateral surface undulate in pressured portion, each level connection joint portion is provided with a tie point, the tie point in each level connection joint portion is connected by connecting rod 16 with the tie point of respective side on adjacent drive nut 15.
Preferably, described vertical loading mechanism comprises leading screw 2 17 and screw-driven pressure head 18, one end of leading screw 2 17 is connected with the power output shaft of propulsion system 3 13, and the other end is connected with the long threaded hole of screw-driven pressure head 18 one end, and the other end of screw-driven pressure head 18 is connected with vertical pressure plate 8.
For ease of applying multistage load by test request, preferably, propulsion system 3 13 and propulsion system four all adopt decelerating step motor.The distance that the size of load controls the advance of screw-driven load maintainer transmission nut by decelerating step motor realizes, the pitch of the number of turns that the distance that transmission nut advances turns over by decelerating step motor and transmission nut is tried to achieve, this distance can be considered the displacement of vertical pressure plate and horizontal pressure plate, removes the use of the displacement transducer for measuring this displacement from.
For ease of observing and test environment under control punch, preferably, the part of its lower end close of shell 7 is provided with visual device.The preferred camera of this visual device, with ground display with the use of.In addition, also can consider to do visual device with Fiber Optic Probe.
For ease of controlling the sample preparation of sample preparation sampler micro-disturbance, sampling, preferably, propulsion system one adopt decelerating step motor.
Preferably, described signal cable passes through the top of shell and sidewall.
Corresponding above-mentioned deep hole rock/upper in-situ test robot, its corresponding method of testing comprises step: A, punch at rock/upper to be measured with drilling tools such as rigs; B, deep hole rock/upper in-situ test robot is put into the position to be measured of the predetermined depth in the hole accomplished fluently; C, assign sample preparation instruction by ground handling operator to control device, control device controls propulsion system one and drives the sample preparation of sample preparation sampler micro-disturbance; After D, sample preparation complete, ground handling operator assigns sampling instruction to control device, and control device controls propulsion system one and drives sample preparation sampler static(al) under maintenance in-situ stress state to press down sampling; E, sampled after, ground handling operator assigns fixed instruction to control device, under control device controls propulsion system two drive hole, stationary installation is opened, deep hole rock/upper in-situ test robot is made to be fixed on precalculated position under hole, be in steady state (SS), with the accuracy of the stability and test data that ensure subsequent load process; F, by ground handling operator, load instructions is assigned to control device, propulsion system three drive vertical loading mechanism, by vertical pressure plate, pressure at right angle is applied to sample, control device controls propulsion system four-wheel drive horizontal addload mechanism, by horizontal pressure plate, horizontal shear force is applied to sample, automatically progressively apply vertical and horizontal load, make ground sample keep axial compression, guarantee that the shear test under different vertical load action is undertaken by standard; Rock/data such as soil sample shearing force and distortion measured automatically by the sensors such as G, the pressure transducer be arranged in vertical pressure plate and horizontal pressure plate, and by signal cable by signals collecting and after-treatment system acquisition and processing, obtain the index such as shearing strength and tensile strength of surveyed rock/soil sample.
Described Shear Strength Index is specially: obtain mohr circle of stress curve according to the stress-strain curve of each layer rock/soil sample, distortion-time curve, calculate cohesive strength, angle of internal friction; Described tensile strength index is specially: according to the pressure-deformation curve of each layer rock/soil sample under dead weight, obtain ratio bearing capacity, plasticity bearing capacity, ultimate bearing capacity index.
For ensureing the accuracy of test result, step C carries out on the basis of depth range taking into full account disturbed soil at the bottom of the hole that boring etc. produces.
Preferably, step B also comprises visual device is placed to tested rock/upper place with deep hole rock/upper in-situ test robot, step C also comprises by visual device observation, records sample making course, and control sample making course by control device, step D also comprises by visual device observation, records sampling process, and controls sampling process by control device.
For ease of applying multistage load by test request, preferably, the device for exerting described in step F can apply multi-level vertical pressure and multistage horizontal shear force.
Deep hole rock/upper in-situ test robot of the present utility model is by adopting micro-disturbance sampling under stress state in position, sample preparation, under hole, equipment is fixed, two to loading, the technology such as test data processes automatically, make deep hole rock/upper in-situ test robot can in any degree of depth, various rock/upper, test under the hole of various water percentage, and accurately, obtain the multinomial intensity index of tested rock/upper rapidly, overcome existing shear strength of rock measuring technology measurement result not accurate enough, the defect that test duration is long, fully meet the requirement of the indices of on-the-spot test.
The utility model has that integrated level is high, lightweight, portable, intelligence degree is high, flexible operation, test advantage accurately and rapidly, the engineering test of various rock/upper can be widely used in, for the designs such as Geotechnical Engineering, hydraulic engineering, Tunnel Engineering, mining engineering provide basic data, for numerical simulation provides reliable mechanics parameter basic data.
Although be below described the utility model in conjunction with the preferred embodiments, but it should be appreciated by those skilled in the art, method and system described in the utility model is not limited to the embodiment described in embodiment, when not deviating from the utility model spirit and scope be defined by the appended claims, can various amendment, increase be made to the utility model and replace.