hand-written,
21, geotechnical engineering performance?
strength, elastic modulus , deformation modulus , compression modulus , viscosity, internal friction angle, etc. physical properties. 78 pages
22, soil nail wall construction principles?
advanced support , layer by layer, layer by layer, closed for a limited time, and over-digging is strictly prohibited. Page 81
23. Regulations on on-site monitoring of foundation pit projects? Before the construction of the foundation pit
1 foundation pit project, a foundation pit project monitoring plan should be prepared. 2 The foundation pit project monitoring project, monitoring point layout, monitoring method, monitoring frequency and monitoring early warning should be determined based on the safety level of the foundation pit project, surrounding environmental conditions, support type, construction site, etc. 3 At least the maintenance should be carried out on the horizontal displacement, settlement, and surrounding buildings, roads, etc. on the top of the wall. Settlement monitoring, and the horizontal displacement of the enclosure wall or soil in the deep layer, internal force of the support structure, soil pressure, pore water, pressure, etc. should be monitored according to the project technical design conditions. The monitoring points should be arranged along the top of the foundation pit maintenance wall with negative points at the central perimeter. I immediately controlled the fire that reached the border warning, and even a quicksand pipe surged and bulged. There have been major changes in the support structure and surrounding environment after several pits. An early warning should be made immediately. 6. Water level monitoring should be carried out when precipitation in foundation pits.
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