Advances in Unstable Slope Instrumentation and Monitoring (2020) / Chapter Skim
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55 Compilation of Survey Responses Provided by Agency Respondents A P P E N D I X C
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56 Advances in Unstable Slope Instrumentation and Monitoring 97.67% 42 2.33% 1 Q2 Does your agency have unstable slopes such as embankments, cut slopes, and beyond-the-right-of-way slope hazard sites that exhibit movement or a threat of movement? Answered: 43 Skipped: 0 TOTAL 43 Yes No 0% 20% 40% 60% 80% 100% ANSWER CHOICES RESPONSES Yes No
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Compilation of Survey Responses Provided by Agency Respondents 57 97.67% 42 2.33% 1 Q3 Does your agency use any form of geotechnical instrumentation and monitoring for unstable slopes other than routine or incidental observation? Answered: 43 Skipped: 0 TOTAL 43 Yes No 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% ANSWER CHOICES RESPONSES Yes No
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58 Advances in Unstable Slope Instrumentation and Monitoring 100.00% 43 51.16% 22 11.63% 5 11.63% 5 86.05% 37 13.95% 6 44.19% 19 2.33% 1 Q4 How are unstable slopes selected for instrumentation and monitoring? (check all that apply)
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Compilation of Survey Responses Provided by Agency Respondents 59 Q5 What general instrumentation and monitoring approaches are used by your agency for unstable slopes? (select all that apply; if not familiar, leave blank)
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60 Advances in Unstable Slope Instrumentation and Monitoring Ground-based LiDAR Ground-based radar Ground-based survey Aerial photogrammet... Aerial LiDAR Satellite InSAR Significant Event detect...
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Compilation of Survey Responses Provided by Agency Respondents 61 Event warning systems to... Event warning systems to...
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62 Advances in Unstable Slope Instrumentation and Monitoring 2.86% 1 8.57% 3 91.43% 32 35 28.21% 11 35.90% 14 38.46% 15 39 21.88% 7 28.13% 9 50.00% 16 32 58.06% 18 12.90% 4 29.03% 9 31 58.06% 18 22.58% 7 19.35% 6 31 56.25% 18 37.50% 12 6.25% 2 32 28.57% 10 71.43% 25 0.00% 0 35 83.87% 26 9.68% 3 6.45% 2 31 8.33% 3 8.33% 3 88.89% 32 36 19.44% 7 33.33% 12 50.00% 18 36 53.13% 17 40.63% 13 6.25% 2 32 80.65% 25 19.35% 6 0.00% 0 31 86.67% 26 13.33% 4 0.00% 0 30 Not Used New Use (within ~10 years) Established Use (> ~10 years)
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Compilation of Survey Responses Provided by Agency Respondents 63 58.82% 20 32.35% 11 8.82% 3 34 90.63% 29 6.25% 2 3.13% 1 32 70.59% 24 26.47% 9 2.94% 1 34 75.00% 24 21.88% 7 3.13% 1 32 87.50% 28 6.25% 2 6.25% 2 32 16.67% 6 22.22% 8 66.67% 24 36 50.00% 17 23.53% 8 29.41% 10 34 41.67% 15 36.11% 13 25.00% 9 36 53.13% 17 25.00% 8 21.88% 7 32 OTHER (PLEASE SPECIFY) Tensiometers, water content sensors Recently started using MEMES array.
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64 Advances in Unstable Slope Instrumentation and Monitoring Q6 Which of the following instrumentation and monitoring data collection, viewing and communication methods are used by your agency for unstable slopes? (select all that apply; if not familiar, leave blank)
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Compilation of Survey Responses Provided by Agency Respondents 65 12.82% 5 5.13% 2 84.62% 33 39 9.76% 4 41.46% 17 48.78% 20 41 31.58% 12 42.11% 16 28.95% 11 38 60.00% 21 28.57% 10 11.43% 4 35 45.71% 16 42.86% 15 11.43% 4 35 60.00% 21 28.57% 10 14.29% 5 35 Not Used New Use (within ~10 years) Established Use (> ~10 years)
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66 Advances in Unstable Slope Instrumentation and Monitoring 47.06% 16 47.06% 16 5.88% 2 34 45.45% 15 45.45% 15 9.09% 3 33 45.45% 15 48.48% 16 6.06% 2 33 75.76% 25 18.18% 6 6.06% 2 33 OTHER (PLEASE SPECIFY) UDOT Geotech would be "Not Used" for most of these, but UDOT Avalanche control uses several types of remote, real-time, web-accessed data acquisition.
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Compilation of Survey Responses Provided by Agency Respondents 67 48.84% 21 9.30% 4 41.86% 18 Q7 Has your agency developed or deployed an innovative instrumentation or monitoring technology within the last 10 years for an agency special case or specific unstable slope problem? Answered: 43 Skipped: 0 TOTAL 43 IF YES, PLEASE DESCRIBE IF ABLE: Landslide warning system has been developed for one slope using tensiometers and water content sensors.
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68 Advances in Unstable Slope Instrumentation and Monitoring CDOT has been involved in a few pilot studies involving corridor wide remote sensing (mostly photogrammetry)
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Compilation of Survey Responses Provided by Agency Respondents 69 7.14% 3 35.71% 15 14.29% 6 23.81% 10 9.52% 4 9.52% 4 Q8 How many unstable slope sites are currently in a regular or planned instrumentation and monitoring program for your agency? Answered: 42 Skipped: 1 TOTAL 42 None 1 to 5 5 to 10 10 to 25 25 to 50 Greater than 50 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% ANSWER CHOICES RESPONSES None 1 to 5 5 to 10 10 to 25 25 to 50 Greater than 50
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70 Advances in Unstable Slope Instrumentation and Monitoring 27.91% 12 37.21% 16 48.84% 21 51.16% 22 27.91% 12 13.95% 6 Q9 In your agency, what describes the frequency that data obtained using instrumentation and monitoring technology are evaluated or interpreted for use in reporting or response actions on unstable slopes? (check all that apply)
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Compilation of Survey Responses Provided by Agency Respondents 71 40.48% 17 88.10% 37 57.14% 24 92.86% 39 30.95% 13 7.14% 3 57.14% 24 66.67% 28 0.00% 0 Q10 How are data from the instrumentation and monitoring of unstable slopes used by your agency? (check all that apply)
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72 Advances in Unstable Slope Instrumentation and Monitoring 35.71% 15 71.43% 30 19.05% 8 52.38% 22 54.76% 23 26.19% 11 61.90% 26 7.14% 3 Q11 How is funding for instrumentation and monitoring of unstable slopes obtained? (check all that apply)
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Compilation of Survey Responses Provided by Agency Respondents 73 23.81% 10 38.10% 16 16.67% 7 4.76% 2 16.67% 7 Q12 What is the estimated approximate range in annual funds committed to instrumentation and monitoring of unstable slopes in the agency? Answered: 42 Skipped: 1 TOTAL 42 < $10,000 $10,000 to $50,000 $50,000 to $250,000 > $250,000 Unsure of approximate...
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74 Advances in Unstable Slope Instrumentation and Monitoring Q13 What approximate percentages of instrumentation and monitoring services are performed in-house? (select estimated percentage range; services that are not completed in-house would be performed by vendors, contractors, consultants, etc.)
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Compilation of Survey Responses Provided by Agency Respondents 75 26.83% 11 14.63% 6 24.39% 10 34.15% 14 41 24.39% 10 9.76% 4 26.83% 11 39.02% 16 41 67.57% 25 5.41% 2 16.22% 6 10.81% 4 37 80.00% 28 2.86% 1 2.86% 1 14.29% 5 35 29.73% 11 8.11% 3 10.81% 4 51.35% 19 37 19.51% 8 9.76% 4 14.63% 6 56.10% 23 41 0 to 25 % 25% to 50% 50% to 75% 75% to 100% On-going maintenance ... Data management 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 0 TO 25 % 25% TO 50% 50% TO 75% 75% TO 100% TOTAL RESPONDENTS Purchase of equipment and material from suppliers Installation of instrumentation and monitoring equipment Remote Sensing Installation of warning systems On-going maintenance and repair of in-situ installed instrumentation Data management
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76 Advances in Unstable Slope Instrumentation and Monitoring 95.24% 40 19.05% 8 2.38% 1 9.52% 4 Q14 How are unstable slope instrumentation and monitoring data managed? (check all that apply)
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Compilation of Survey Responses Provided by Agency Respondents 77 2.44% 1 17.07% 7 9.76% 4 70.73% 29 Q15 Has your agency developed internally, or procured contract services for development of, a web-based data acquisition and viewing system for instrumentation and monitoring data from unstable slope sites? Answered: 41 Skipped: 2 TOTAL 41 Yes – internally...
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78 Advances in Unstable Slope Instrumentation and Monitoring 90.48% 38 61.90% 26 14.29% 6 9.52% 4 7.14% 3 2.38% 1 Q16 What visualization and communication methods are used by your agency for instrumentation and monitoring data from unstable slopes? (check all that apply)
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Compilation of Survey Responses Provided by Agency Respondents 79 60.47% 26 74.42% 32 39.53% 17 60.47% 26 20.93% 9 20.93% 9 18.60% 8 11.63% 5 Q17 Which of the following would enable an increased use of instrumentation and monitoring for unstable slopes in your agency? Answered: 43 Skipped: 0 Total Respondents: 43 OTHER (PLEASE SPECIFY)
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80 Advances in Unstable Slope Instrumentation and Monitoring Q18 If able, please provide additional comments to the survey responses above or descriptions of new instrumentation and monitoring technology used by your agency for unstable slopes. Answered: 19 Skipped: 24 RESPONSES Our consultants are applying new instrumentation in geotechnical studies.
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Compilation of Survey Responses Provided by Agency Respondents 81 Digital slope inclinometer systems - manual read SAA technology Ground based side scanning radar for worker safety. We have an institutional tendency to stick with tried and true methods.
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82 Advances in Unstable Slope Instrumentation and Monitoring 95.24% 40 4.76% 2 Q19 May we contact you for additional information based on the answers provided in this survey? Answered: 42 Skipped: 1 TOTAL 42 Yes No 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% ANSWER CHOICES RESPONSES Yes No
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Compilation of Survey Responses Provided by Agency Respondents 83 Q20 The synthesis team welcomes experience on lessons learned through the application of new instrumentation and monitoring technology for unstable slopes in the last 10 to 15 years. Please provide comments on this experience below, or if preferred, you can respond with "please call" and a member of the synthesis team will contact you for this information.
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