The short answer is yes there will be lateral pressure, but likely reduced. Here are several papers that should help:
Frydman, Sam and Keissar, Israel (1987), "Earth pressure on retaining walls near rock faces," Journal of Geotechnical Engineering, ASCE, Vol. 113, No. 6, June, pp. 586-599...
Has anyone ever seen reference to using an 800-pound hammer when sampling with D&M sampler? I know of the 300- or 340-pound hammers. However, I have an 1972 Dames and Moore report that very clearly references a "D&M Type-U sampler driven with n 800-pound weight falling 24 inches." We are...
