Menard pressuremeter testing has been widely used in geotechnical engineering applications for 40 years and is an important technique in determining in-situ horizontal stress distributions. In this study, Menard pressuremeter testing is combined with a “cookie-cutter” insertion technique to determine horizontal stresses for a soft-rock in an operational Australian mine. The method presents an alternative to the Self-Bored Pressuremeter, with cookie-cutter drill rods allowing for sample recovery and further laboratory testing. The method accommodates for the presence of gravel and hard layered materials that present a risk of damage to cutting shoes of Self-Bored Pressuremeter devices. The combination of a sonic drill rig, coupled with the cookie cutter rods produces a close tolerance pocket resulting in “pseudo self boring pressuremeter tests”. The undrained shear strength, unload-reload shear modulus and in-situ horizontal stress are presented from pressuremeter tests conducted in the region for the first time. The undrained shear strength was observed in the range of 0.47–0.57 MPa, the unload-reload shear modulus between 17.43 and 18.25 MPa, the lift-off pressure in the range of 0.35–0.61 MPa. The K₀ of coal was equal to 1, with interseam materials ranging from 2.1 to 3.5. Results of the cookie-cutter insertion method are compared with conventional drilling methods, with the cookie-cutter insertion test providing results in good agreement with both advanced triaxial laboratory tests and FEM numerical analysis. Cookie-cutter pressuremeter tests were conducted on cohesive soils at Australia's second-largest open-pit mine, with pressuremeter test results presented for Victorian brown coal for the first time.

Menard压力计测试已在岩土工程应用中广泛使用了40年，是确定现场水平应力分布的一项重要技术。在这项研究中，梅纳德压力计测试与“千篇一律”插入技术相结合，可确定澳大利亚某矿山中软岩的水平应力。该方法提供了自力式压力计的替代选择，带有千篇一律的钻杆允许样品回收和进一步的实验室测试。该方法适用于砾石和硬质层材料的存在，这些材料可能会损坏自钻孔压力计设备的切靴。声波钻机与千篇一律的切杆相结合，产生了紧密的容差腔，从而导致了“伪自镗压力表测试”。首次从该地区进行的压力计测试中获得了不排水的剪切强度，卸载-再加载剪切模量和原位水平应力。观察到不排水的剪切强度在0.47-0.57 MPa的范围内，卸载-再加载的剪切模量在17.43和18.25 MPa之间，提离压力在0.35-0.61 MPa的范围内。K煤的₀等于1，中间材料的范围从2.1到3.5。切饼机插入方法的结果与常规钻孔方法进行了比较，其中切饼机插入测试提供的结果与先进的三轴实验室测试和FEM数值分析非常吻合。千篇一律的压力计测试是在澳大利亚第二大露天矿的粘性土壤上进行的，压力计的测试结果首次显示在维多利亚时代的褐煤上。