WO2020206922A1 - 一种动静载叠加式岩石力学试验机及试验方法 - Google Patents
一种动静载叠加式岩石力学试验机及试验方法 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- the invention relates to the technical field of rock mechanics testing, in particular to a rock mechanics testing machine with superimposed dynamic and static loads, and a testing method using the testing machine.
- Rock burst is a dynamic phenomenon of severe damage caused by the instantaneous release of deformation energy stored in the coal and rock bodies around mine shafts and stopes. It is one of the typical dynamic disasters in mining, and it seriously restricts the safe and efficient production of mines. , Its generation environment, occurrence location and appearance form are more diverse.
- domestic and foreign scholars have proposed a variety of theories. Among them, the dynamic and static load superimposed inducement mechanism believes that the rock burst is the result of the combined effect of the internal static load and the external dynamic load in the coal and rock mass. When the sum of superposition with dynamic load is greater than the critical load that induces coal and rock mass shock, shock disaster may be induced. This theory provides a certain theoretical basis for the prediction and prevention of rock burst.
- rock mechanics testing machines are mainly divided into two categories at this stage: One is static load testing machines, such as conventional rock mechanics testing machines. To determine the dynamic failure time of coal, elastic energy index, impact energy index, and uniaxial compressive strength to study the impact tendency performance of coal.
- static load testing machines such as conventional rock mechanics testing machines.
- dynamic load testing machine such as an impact testing machine, which can be used to study the transient failure characteristics of rocks under dynamic load.
- the above-mentioned testing machine is only used for static load or dynamic load impact test, but the theory of dynamic and static load superposition induced rock pressure needs to study the rock mechanics properties under dynamic and static load superposition, so it needs to apply static load and dynamic load energy impact two functions Combining indoor tests can reveal the mechanism of rock impact failure more deeply. Therefore, in order to achieve the test purpose of static and dynamic simultaneous loading of the same rock specimen, it is necessary to develop a rock mechanics testing machine with both static loading and dynamic energy impact testing functions and capable of monitoring impact energy.
- the present invention provides a dynamic and static load superimposed rock mechanics testing machine and testing method.
- the specific technical solutions are as follows.
- a dynamic and static load superimposed rock mechanics testing machine including a static loading device, a dynamic loading device and a monitoring system.
- the static loading device includes a top beam, a column, a loading cylinder, a base, a pressure column and a beam
- the dynamic loading device includes an energy storage spring , Telescopic column, energy storage control cylinder, electromagnet, lifting cylinder and protective backing plate;
- the static loading device is provided with columns on both sides below the top beam, the loading cylinder is set on the base, and the pressure column is set above the loading cylinder
- the telescopic column and the energy storage control cylinder of the dynamic loading device are arranged between the top beam and the crossbeam, the energy storage spring is sleeved on the telescopic column, the lower end of the energy storage control cylinder is provided with an electromagnet, and the crossbeam and the column are provided Lifting cylinder and protective backing plate.
- the monitoring system includes an energy storage load sensor, a first load sensor, a second load sensor, and an impact displacement sensor; an energy storage load sensor is arranged between the telescopic column and the top beam, and the first load sensor is arranged above the loading cylinder, and the beam A second load sensor is arranged below; an impact displacement sensor is also arranged below the top beam.
- two ends of the beam are provided with balls, and the upright column is provided with a clamping groove matched with the balls.
- the lifting cylinders are arranged on both sides under the beam, the protective backing plate and the lifting cylinders are arranged adjacently, and the distance between the end surface of the protection backing plate and the beam is greater than the maximum impact displacement of the beam.
- the loading cylinder, the energy storage control cylinder, the electromagnet and the lifting cylinder are controlled by the control system.
- a dynamic and static load superimposed rock mechanics test method using the above-mentioned dynamic and static load superimposed rock mechanics testing machine, the steps include:
- the loading cylinder stops loading, the rock specimen is relieved of pressure, and the test monitoring data is stored;
- the dynamic and static load superimposed rock mechanics testing machine realizes the different deformation compression of the energy storage spring through the stroke control of the energy storage control oil cylinder, that is, the dynamic load elastic energy storage amount is adjustable, and through the electromagnetic
- the iron controls the moment of impact; in addition, balls are arranged at both ends of the beam to reduce the elastic energy loss of dynamic loading.
- the monitoring system can simultaneously monitor and record the dynamic load elastic energy of the rock and the release speed, impact displacement and velocity and other data, and the information is more comprehensive;
- the energy storage load sensor is used to monitor the compression load of the energy storage spring, Thus, the internal elastic energy of the energy storage spring is calculated;
- the first load sensor and the second load sensor are used to monitor the load of the rock specimen during the test;
- the impact displacement sensor under the top beam is used to monitor the displacement and speed of the beam.
- the dynamic and static load superimposed rock mechanics test method realizes the synchronous test of static load and dynamic load elastic energy impact, which can provide a theoretical basis for the rock impact failure mechanism, and control the work of each hydraulic cylinder through the control system to facilitate the realization of static and dynamic synchronization Load, record the whole process of rock damage under static load.
- Figure 1 is a schematic diagram of the structure of the dynamic and static load superimposed rock mechanics testing machine
- Figure 2 is a schematic diagram of the structure of the energy storage spring and the telescopic column
- a specific structure of a dynamic and static load superimposed rock mechanics testing machine includes a static loading device, a dynamic loading device, a control system and a monitoring system.
- the static loading device is used for static loading. It is slowly loaded by the loading cylinder 3 on the base.
- the dynamic loading device uses the energy storage control cylinder 9 to control the position of the beam 6, and stores the elastic energy through the energy storage spring 7, which is achieved by cooperating with the electromagnet 10.
- the purpose of instantaneously releasing the beam 6 to simulate the impact effect, the control system is used to control the work of the electromagnet and each cylinder, and the monitoring system monitors and records the load changes during the test in real time.
- the static loading device includes a top beam 1, a column 2, a loading cylinder 3, a base 4, a pressure-bearing column 5, and a cross beam 6.
- the static loading device has columns 2 on both sides below the top beam 1, and the lower end of the column 2 is fixed on the base 4.
- the loading cylinder 3 is fixedly arranged on the base 4 between the uprights 2, and the pressure bearing column 5 is arranged above the loading cylinder 3 for placing rock specimens.
- a first load sensor 15 is arranged between the pressure-bearing column 5 and the loading cylinder 3, wherein the column 2 is specifically a column-shaped structure, and the column body of the column 1 is provided with a slot, and the longitudinal section of the slot is L-shaped. Fix the restraining beam.
- the dynamic loading device includes an energy storage spring 7, a telescopic column 8, an energy storage control cylinder 9, an electromagnet 10, a lifting cylinder 11 and a protective backing plate 12.
- the dynamic loading device's telescopic column 8 and an energy storage control cylinder 9 are set on the top beam 1. Between the beam and the beam 6, the number of telescopic columns can be three, the number of energy storage control cylinders 9 can be two, the energy storage control cylinder 9 and the telescopic column 8 are inserted and arranged, and both sides of the energy storage control cylinder 9 are placed with telescopic columns 8.
- An energy storage spring 7 is sleeved on the telescopic column 8. The two ends of the energy storage spring 7 can be fixed to the ends of the telescopic column 8.
- the maximum extension length of the energy storage spring 7 is greater than the extension length of the telescopic column 8.
- the energy storage spring 7 The minimum contraction length of is smaller than the contraction length of the telescopic column 8, so as to ensure that the spring will not be excessively stretched.
- An electromagnet 10 is provided at the lower end of the energy storage control cylinder 9. The electromagnet 10 is used to fix the beam 6, and the electromagnet 10 controls the beam 6 to facilitate the fixing of the beam 6 and the release of the beam 6 after the energy storage spring 7 stores energy.
- a lifting cylinder 11 and a protective backing plate 12 are arranged between the beam 6 and the column 2. The lifting cylinders 11 are arranged on both sides below the beam 6, specifically, the lifting cylinder 11 and the protective backing plate 12 are arranged in the slots on the column.
- the lifting cylinder 11 is arranged close to the column 2, the protective backing plate 12 is adjacent to the column 2, the protective backing plate 12 and the lifting cylinder 11 are arranged adjacently, the distance between the upper end surface of the protective backing plate 12 and the beam 6 is greater than the maximum impact displacement of the beam, thus It can be ensured that the beam 6 will not cause equipment damage due to excessive displacement.
- the two ends of the beam 6 are provided with balls, and the column 2 is also provided with grooves that cooperate with the balls to facilitate the movement of the beam 6 and ensure that the elastic energy is transmitted through the beam 6 to simulate impact load.
- the loading cylinder 3, the energy storage control cylinder 9, the electromagnet 10, and the lifting cylinder 11 are controlled by the control system.
- the control system 13 controls the hydraulic oil injection amount of the loading cylinder 3, the energy storage control cylinder 9 and the lifting cylinder 11, thereby controlling the cylinder Stroke and load.
- the monitoring system includes an energy storage load sensor 14, a first load sensor 15, a second load sensor 16, and an impact displacement sensor 17.
- An energy storage load sensor 14 is provided between the telescopic column 8 and the top beam 1 for monitoring the energy storage spring 9
- a first load sensor 15 is provided above the loading cylinder 3, and a second load sensor 16 is provided below the beam 6, which is used to monitor the load of the rock specimen during the test; an impact displacement sensor is also provided under the top beam 1 17. It is used to monitor the impact displacement and impact velocity of the load beam 6.
- a dynamic and static load superimposed rock mechanics test method using the above-mentioned dynamic and static load superimposed rock mechanics test machine, the specific steps include:
- A. First design the test plan, and determine the total value of the elastic energy of the energy storage spring according to the impact load designed in the test plan.
- the compression deformation value of the storage spring is determined according to the stiffness coefficient of the storage spring, and the stroke of the storage control cylinder is determined by the compression deformation value of the storage spring, which is controlled by the control system.
- the electromagnet After the loading cylinder loads the rock specimen to the set load, the electromagnet is powered off. After the power is off, the beam loses its vertical restraint. Driven by the energy storage spring, the beam exerts a dynamic load on the rock specimen. Damaged by impact, the impact displacement sensor monitors the displacement and speed of the beam during the process.
- the loading cylinder stops loading, the rock specimen is relieved of pressure, and the test monitoring data is stored.
- the dynamic and static load superimposed rock mechanics test method realizes the simultaneous test of static load and dynamic load elastic energy impact, which can provide a theoretical basis for the rock impact failure mechanism.
- the control system controls the work of each hydraulic cylinder to facilitate the realization of static loading and dynamic loading. Combine, record the whole process of rock being damaged by impact under static load.
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Abstract
一种动静载叠加式岩石力学试验机及试验方法，涉及岩石力学试验技术领域，包括静态加载装置、动态加载装置和监测系统，静态加载装置包括顶梁（1）、立柱（2）、加载油缸（3）、承压柱（5）和横梁（6），动态加载装置包括蓄能弹簧（7）、伸缩柱（8）、蓄能控制油缸（9）、电磁铁（10）、升降油缸（11）和防护垫板（12）；顶梁（1）下方的两侧设置有立柱（2），加载油缸（3）设置在底座（4）上，伸缩柱（8）和蓄能控制油缸（9）设置在顶梁（1）和横梁（6）之间，伸缩柱（8）上套设有蓄能弹簧（7），蓄能控制油缸（9）下端设置有电磁铁（10），横梁（6）和立柱（2）之间设置有升降油缸（11）和防护垫板（12），伸缩柱（8）和顶梁（1）之间设置有蓄能荷载传感器（14）；以及利用该试验机研究岩石试件冲击破坏的方法，实现了对同一岩石试件进行静态和动态同步加载的试验目的，还具有控制灵活、方便等优点。
Description
本发明涉及岩石力学试验技术领域，尤其是一种动静载叠加的岩石力学试验机，以及利用该试验机进行试验方法。
冲击地压是由于储存在矿山井巷和采场周围煤岩体内的变形能瞬间释放而产生的剧烈破坏的动力现象，是矿山开采中典型动力灾害之一，其严重制约着矿山安全高效生产，其生成环境、发生地点、显现形态更是多种多样。针对冲击地压诱发机理，国内外学者提出了多种理论，其中动静载叠加诱冲机理认为冲击矿压是煤岩体内部静载与外部动载共同作用的结果，当煤岩体中静载荷与动载叠加之和大于诱发煤岩体冲击的临界载荷，就可能诱发冲击灾害，该理论对冲击地压预测与防治提供了一定的理论依据。
室内岩石力学试验是研究冲击地压发生物理力学特征的重要手段，根据加载方式的不同，现阶段岩石力学试验机主要分为两类：一类为静载试验机，例如常规岩石力学试验机可用来测定煤体动态破坏时间、弹性能量指数、冲击能量指数、单轴抗压强度四个指数来研究煤体的冲击倾向性能。另一类为动载试验机，例如冲击试验机等，可用来研究动载作用下岩石瞬时破坏特征。
上述试验机仅用于静态加载或者动载冲击试验，但是动静载叠加诱发冲击地压的理论需要研究动静载荷叠加情况下的岩石力学性质，因此需要将静载施加和动载能量冲击两种功能相结合进行室内试验，才能更加深入的揭示岩石冲击破坏机理。因此，为实现对同一岩石试件进行静态和动态同步加载的试验目的，有必要研发一种具备静态加载与动载能量冲击两种试验功能、且可进行冲击能量监测的岩石力学试验机。
为实现对同一岩石试件既进行静态加载又进行动态加载的技术问题，本发明提供了一种动静载叠加式岩石力学试验机及试验方法，具体技术方案如下。
一种动静载叠加式岩石力学试验机，包括静态加载装置、动态加载装置和监测系统，静态加载装置包括顶梁、立柱、加载油缸、底座、承压柱和横梁，动态加载装置包括蓄能弹簧、伸缩柱、蓄能控制油缸、电磁铁、升降油缸和防护垫板；所述静态加载装置的顶梁下方的两侧设置有立柱，加载油缸设置在底座上，承压柱设置在加载油缸上方；所述动态加载装置的伸缩柱和蓄能控制油缸设置在顶梁和横梁之间，伸缩柱上套设有蓄能弹簧，蓄能控制油缸下端设置有电磁铁，横梁和立柱之间设置有升降油缸和防护垫板。
进一步的，监测系统包括蓄能荷载传感器、第一荷载传感器、第二荷载传感器和冲击位移传感器；伸缩柱和顶梁之间设置有蓄能荷载传感器，加载油缸上方设置有第一荷载传感器，横梁下方设置有第二荷载传感器；顶梁下方还设置有冲击位移传感器。
进一步的，横梁两端设置有滚珠，立柱上设置有和滚珠配合的卡槽。
还进一步的，升降油缸设置在横梁下方的两侧，防护垫板和升降油缸相邻布置，防护垫板上端面和横梁的距离大于横梁的最大冲击位移。
还进一步的，加载油缸、蓄能控制油缸、电磁铁和升降油缸受控制系统的控制。
一种动静载叠加岩石力学试验方法，利用上述的一种动静载叠加式岩石力学试验机，步骤包括：
A.根据蓄能弹簧的劲度系数和和设计弹性能量值确定蓄能弹簧压缩变形值，通过蓄能弹簧压缩变形值确定蓄能控制油缸的行程；
B.启动升降油缸抬升横梁至横梁和电磁铁接触，电磁铁通电横梁固定，升降油缸收缩恢复至初始状态；
C.安放岩石试件，启动加载油缸对岩石试件静态加载，监测系统记录蓄能荷载传感器、第一荷载传感器和第二荷载传感器的监测数据；
D.加载油缸对岩石试件加载至设定载荷后，电磁铁断电，横梁对岩石试件施加动载，岩石试件受到冲击破坏；
E.加载油缸停止加载，岩石试件卸压，储存试验监测数据；
F.计算蓄能弹簧压缩后的弹性能总量、弹性能释放速度、横梁冲击速度、岩石试件所受载荷，记录岩石试件破坏过程。。
（1）本发明提供的一种动静载叠加式岩石力学试验机，通过蓄能控制油缸的行程控制，实现蓄能弹簧的不同变形量压缩，即动载弹性能储存量可调，并且通过电磁铁控制冲击时刻；另外，横梁两端设置有滚珠从而可以减少动态加载的弹性能损耗。
（2）监测系统可以同步监测与记录岩石所受动载弹性能的大小及释放速度、冲击位移与速度等数据，信息监测较全面；其中蓄能荷载传感器用于监测蓄能弹簧的压缩载荷，从而计算蓄能弹簧的内部弹性能；第一荷载传感器和第二荷载传感器用于监测岩石试件在试验过程中所受载荷；顶梁下方的冲击位移传感器用于监测横梁的位移及速度。
（3）动静载叠加岩石力学试验方法，实现了静态加载和动载弹性能冲击同步试验，从而可以为岩石冲击破坏机理提供理论依据，通过控制系统控制各个液压缸工作，方便实现静态和动态同步加载，记录岩石在静载作用下受冲击破坏的全过程。
图1是动静载叠加式岩石力学试验机结构示意图；
图2是蓄能弹簧和伸缩柱结构示意图；
图中：1-顶梁；2-立柱；3-加载油缸；4-底座；5-承压柱；6-横梁；7-蓄能弹簧；8-伸缩柱；9-蓄能控制油缸；10-电磁铁；11-升降油缸；12-防护垫板；13-控制系统；14-蓄能荷载传感器；15-第一荷载传感器；16-第二荷载传感器；17-冲击位移传感器。
结合图1和图2所示，本发明提供的一种动静载叠加式岩石力学试验机及试验方法的具体实施方式如下：
一种动静载叠加式岩石力学试验机具体结构包括静态加载装置、动态加载装置、控制系统和监测系统。静态加载装置用于静态加载，通过底座上的加载油缸3缓慢加载，动态加载装置利用蓄能控制油缸9控制横梁6的位置，并通过蓄能弹簧7保存弹性能，通过和电磁铁10配合达到瞬间释放横梁6模拟冲击效果的目的，控制系统用于控制电磁铁和各个油缸的工作，监测系统实时监测并记录试验过程中的载荷变化情况。
静态加载装置包括顶梁1、立柱2、加载油缸3、底座4、承压柱5和横梁6，静态加载装置的顶梁1下方的两侧设置有立柱2，立柱2下端固定在底座4上，加载油缸3固定设置在立柱2之间的底座4上，承压柱5设置在加载油缸3上方，用于放置岩石试件。承压柱5和加载油缸3之间设置有第一荷载传感器15，其中立柱2具体为柱状结构，并在立柱1的柱体上开设有开槽，开槽的纵向截面呈L形，用于固定约束横梁。
动态加载装置包括蓄能弹簧7、伸缩柱8、蓄能控制油缸9、电磁铁10、升降油缸11和防护垫板12，动态加载装置的伸缩柱8和蓄能控制油缸9设置在顶梁1和横梁6之间，其中伸缩柱可以为3个，蓄能控制油缸9可以为2个，蓄能控制油缸9和伸缩柱8插空排列，蓄能控制油缸9的两侧均放置有伸缩柱8。伸缩柱8上套设有蓄能弹簧7，蓄能弹簧7的两端可以和伸缩柱8的两端固定，另外蓄能弹簧7的最大伸展长度大于伸缩柱8的伸展长度，蓄能弹簧7的最小收缩长度小于伸缩柱8的收缩长度，从而可以保证弹簧不会过度伸缩。蓄能控制油缸9下端设置有电磁铁10，电磁铁10用于固定横梁6，电磁铁10控制横梁6，从而方便横6的固定以及蓄能弹簧7蓄能后横梁6的释放。横梁6和立柱2之间设置有升降油缸11和防护垫板12，升降油缸11设置在横梁6下方的两侧，具体是将升降油缸11和防护垫板12设置在柱体上的开槽内，升降油缸11靠近立柱2设置，防护垫板12与立柱2相邻，防护垫板12和升降油缸11相邻布置，防护垫板12上端面和横梁6的距离大于横梁的最大冲击位移，从而能够保证横梁6不会因为位移过大而导致设备损伤。另外，横梁6两端设置还有滚珠，立柱2上还设置有和滚珠配合的卡槽，从而方便横梁6运动，保证弹性能通过横梁6传递，模拟冲击载荷。
加载油缸3、蓄能控制油缸9、电磁铁10和升降油缸11受控制系统的控制，控制系统13通过控制加载油缸3、蓄能控制油缸9和升降油缸11的液压油注油量，进而控制油缸的行程和载荷。监测系统包括蓄能荷载传感器14、第一荷载传感器15、第二荷载传感器16和冲击位移传感器17，伸缩柱8和顶梁1之间设置有蓄能荷载传感器14，用于监测蓄能弹簧9的压缩载荷；加载油缸3上方设置有第一荷载传感器15，横梁6下方设置有第二荷载传感器16，用于监测岩石试件试验过程所受载荷；顶梁1的下方还设置有冲击位移传感器17，用于监测承载横梁6的冲击位移及冲击速度。
一种动静载叠加岩石力学试验方法，利用上述的一种动静载叠加式岩石力学试验机，具体步骤包括：
A.首先设计试验方案，根据试验方案设计的冲击载荷确定蓄能弹簧的弹性能总值。根据蓄能弹簧的劲度系数确定蓄能弹簧压缩变形值，通过蓄能弹簧压缩变形值确定蓄能控制油缸的行程，通过控制系统对其进行控制。
B.启动升降油缸抬升横梁至横梁和电磁铁接触，接触后控制系统控制电磁铁通电将横梁固定，升降油缸收缩恢复至初始状态。
C.安放岩石试件，启动加载油缸对岩石试件静态加载，通过监测系统记录蓄能荷载传感器、第一荷载传感器和第二荷载传感器的监测数据。
D.加载油缸对岩石试件加载至设定载荷后，电磁铁断电，断电后横梁失去竖直方向的约束，在蓄能弹簧推动下，横梁对岩石试件施加动载，岩石试件受到冲击破坏，该过程中冲击位移传感器监测横梁的位移和速度。
E.加载油缸停止加载，岩石试件卸压，储存试验监测数据。
F.计算蓄能弹簧压缩后的弹性能总量、弹性能释放速度、横梁冲击速度、岩石试件所受载荷，记录岩石试件破坏过程。
动静载叠加岩石力学试验方法，实现了静态加载和动载弹性能冲击同步试验，从而可以为岩石冲击破坏机理提供理论依据，通过控制系统控制各个液压缸工作，从而方便实现静态加载和动态加载的组合，记录岩石在静载作用下受冲击破坏的全过程。
当然，上述说明并非是对本发明的限制，本发明也并不仅限于上述举例，本技术领域的技术人员在本发明的实质范围内所做出的变化、改型、添加或替换，也应属于本发明的保护范围。
Claims (6)
- 一种动静载叠加式岩石力学试验机，包括静态加载装置、动态加载装置和监测系统，静态加载装置包括顶梁、立柱、加载油缸、底座、承压柱和横梁，其特征在于，动态加载装置包括蓄能弹簧、伸缩柱、蓄能控制油缸、电磁铁、升降油缸和防护垫板；所述静态加载装置的顶梁下方的两侧设置有立柱，加载油缸设置在底座上，承压柱设置在加载油缸上方；所述动态加载装置的伸缩柱和蓄能控制油缸设置在顶梁和横梁之间，伸缩柱上套设有蓄能弹簧，蓄能控制油缸下端设置有电磁铁，横梁和立柱之间设置有升降油缸和防护垫板。
- 根据权利要求1所述的一种动静载叠加式岩石力学试验机，其特征在于，所述监测系统包括蓄能荷载传感器、第一荷载传感器、第二荷载传感器和冲击位移传感器；所述伸缩柱和顶梁之间设置有蓄能荷载传感器，加载油缸上方设置有第一荷载传感器，横梁下方设置有第二荷载传感器；所述顶梁下方还设置有冲击位移传感器。
- 根据权利要求1所述的一种动静载叠加式岩石力学试验机，其特征在于，所述横梁两端设置有滚珠，立柱上设置有和滚珠配合的卡槽。
- 根据权利要求1所述的一种动静载叠加式岩石力学试验机，其特征在于，所述升降油缸设置在横梁下方的两侧，防护垫板和升降油缸相邻布置，防护垫板上端面和横梁的距离大于横梁的最大冲击位移。
- 根据权利要求1所述的一种动静载叠加式岩石力学试验机，其特征在于，所述加载油缸、蓄能控制油缸、电磁铁和升降油缸受控制系统的控制。
- 一种动静载叠加岩石力学试验方法，利用权利要求1至5任一项所述的一种动静载叠加式岩石力学试验机，其特征在于，步骤包括：A.根据蓄能弹簧的劲度系数和设计弹性能量值确定弹簧压缩变形值，通过蓄能弹簧压缩变形值确定蓄能控制油缸的行程；B.启动升降油缸抬升横梁至横梁和电磁铁接触，电磁铁通电横梁固定，升降油缸收缩恢复至初始状态；C.安放岩石试件，启动加载油缸对岩石试件静态加载，监测系统记录蓄能荷载传感器、第一荷载传感器和第二荷载传感器的监测数据；D.加载油缸对岩石试件加载至设定载荷后，电磁铁断电，横梁对岩石试件施加动载，岩石试件受到冲击破坏；E.加载油缸停止加载，岩石试件卸压，储存试验监测数据；F.计算蓄能弹簧压缩后的弹性能总量、弹性能释放速度、横梁冲击速度、岩石试件所受载荷，记录岩石试件破坏过程。
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