CAJ | 학술논문

详细介绍自主研发的煤岩剪切–渗流耦合试验装置的结构和功能。该装置系统包括伺服控制加载系统，流体源加载系统，剪切盒及其密封系统，控制与数据采集系统，煤岩断面三维扫描系统5个部分。其中，剪切密封系统可实现高性能综合试验条件下密封效果良好；伺服控制加载系统可提供常法向(剪切)荷载、常法向(剪切)位移加载方式以及不同荷载加载速率与不同位移加载速率的加载方式，并可通过控制与数据采集系统对试验全过程进行实时操控；流体源加载系统可提供高至5 MPa水头压力或气压，并保持稳定；试件剪切变形、法向变形采用位移传感器与变形传感器双重监测手段，可保证高精度条件下完成剪切–渗流耦合试验；煤岩断面三维扫描系统可采集煤岩断面三维信息，便于进一步研究断面特征与裂隙渗流耦合机制。利用该装置对完整砂岩进行试验，结果表明：该煤岩剪切–渗流耦合试验装置满足预期试验功能要求，试验过程稳定，操作简便，试验数据精度高。既可应用于研究裂隙岩体的水力学特性及岩质边坡滑坡机制，也可应用于开展原岩地应力状态及采动影响条件下煤层内部煤岩剪切破断过程及其与煤层瓦斯渗透性耦合机制的试验研究。
상세개소자주연발적매암전절–삼류우합시험장치적결구화공능。해장치계통포괄사복공제가재계통，류체원가재계통，전절합급기밀봉계통，공제여수거채집계통，매암단면삼유소묘계통5개부분。기중，전절밀봉계통가실현고성능종합시험조건하밀봉효과량호；사복공제가재계통가제공상법향(전절)하재、상법향(전절)위이가재방식이급불동하재가재속솔여불동위이가재속솔적가재방식，병가통과공제여수거채집계통대시험전과정진행실시조공；류체원가재계통가제공고지5 MPa수두압력혹기압，병보지은정；시건전절변형、법향변형채용위이전감기여변형전감기쌍중감측수단，가보증고정도조건하완성전절–삼류우합시험；매암단면삼유소묘계통가채집매암단면삼유신식，편우진일보연구단면특정여렬극삼류우합궤제。이용해장치대완정사암진행시험，결과표명：해매암전절–삼류우합시험장치만족예기시험공능요구，시험과정은정，조작간편，시험수거정도고。기가응용우연구렬극암체적수역학특성급암질변파활파궤제，야가응용우개전원암지응력상태급채동영향조건하매층내부매암전절파단과정급기여매층와사삼투성우합궤제적시험연구。
The structure and function of self-developed coal rock shear-flow coupling test device in great detail were presented. This device system consists of five parts:the servo control system,the source of fluid loading system,shear box and its sealing system,control and data acquisition system and the 3D scanning system for coal rock section. Among them,the self-developed shear sealing system can realize a good seal under high-performance and comprehensive experimental condition. The servo loading system can offer constant normal(shear) load, constant normal(shear) displacement loading mode,different loading rates and different displacement rates mode. And through control and data acquisition system,it can realize real-time monitoring of the whole process as well. For the source of fluid loading system,it can provide hydraulic pressure or air pressure up to 5 MPa and maintain stability. Using displacement sensor and deformation sensor to monitor the shear deformation of specimen and normal deformation can ensure the completeness of shear-flow coupling test under high precision. The 3D scanning system for coal rock section is used to collect the information of coal rock section,to further study the characteristics of failure section and coupling mechanisms of seepage. The test results of intact sandstone by this device show that the self-developed shear-flow coupling device can meet the expected functional requirement. It can ensure a stable test process and high accuracy of test data. It can be both used to study the hydraulic performance of joint rock mass and explore the landslide mechanism of rock slope,and perform the experimental study for the internal failure process of coal rock under the influences of original rock stress and mining dynamic pressure and the coupling mechanism of the permeability of coal gas.