Grouting a tunnel cave-in from the surface: a case study on Kurtkulağı irrigation tunnel, Turkey

Türkmen, Sedat; Özgüzel, Nuri

doi:10.1016/s0886-7798(03)00007-5

Cited by 23 publications

(10 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Urban underground construction activities have destroyed the original stable state of the soil, and a little carelessness will cause the ground to collapse. For example, during the construction of Kurtkulag irrigation tunnel, many ground collapse accidents occurred mainly at the exit and entrance of the tunnel and the location where the tunnel crosses the fault [28]; Hou et al [29] pointed out that the existence of underground holes greatly reduced the strength of the ground and the ability of resisting subsidence and divided Beijing subway accidents into five categories. Ma et al [30] analyzed the causes of three consecutive ground collapses in a subway tunnel within half a month after the start of the shield machine and found that the causes of ground collapses in the process of shield construction mainly include four aspects: engineering geological conditions, auxiliary engineering quality problems, excavation management, and shield machine failure.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Instability Mechanism and Induced Cause of Urban Pavement in Xining City, China

Gan

Wang

Chen

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

As a large human gathering place, the city directly causes huge property losses and casualties due to the ground collapse accident every year. In order to explore the causes and damage characteristics of urban ground collapse, taking Xining City, Qinghai Province, as an example, this paper analyzes the accidental factors causing ground collapse through on-site geological exploration and then expounds the deformation characteristics of urban ground collapse by using the numerical simulation method of Fluent and PFC. Using the collapsible balance method, it is obtained that the insufficient thickness of the top plate of the Loess Soil Subgrade in the collapse pit area is the inevitable factor causing the final collapse. The results show the following: (1) The failure of water supply pipe is an accidental factor leading to the formation of underground cavity, and the ground collapse accident is hidden, sudden, and of high risk, and its deformation and failure development process is slow. (2) The critical thickness of the roof above the air raid shelter is about 22 m, and the actual thickness is about 11.6 m, which is prone to deformation and uneven settlement, which is also an inevitable factor causing ground collapse. (3) The numerical simulation study shows that the final formation deformation range is about 16 m. At this time, the height of the formed cavity is about 9 m. The plastic zone tends to develop around, and the maximum settlement position appears above the air raid shelter. (4) The collapse process includes four stages: water supply pipeline leakage, underground cavity formation, collapse critical state, and ground collapse. This research and analysis provides theoretical guidance and scientific basis for the investigation, measurement, detection, and monitoring of various underground pipe networks of urban roads.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of Instability Mechanism and Induced Cause of Urban Pavement in Xining City, China

Gan

Wang

Chen

et al. 2022

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…Wisser et al [18] described the numerical model method of compensation grouting and proposed a useful technology to protect the surface structure from the potential damage caused by tunnel construction. Türkmen and Özgüzel [19] introduced the treatment measures of contact grouting and consolidation grouting in the collapse of irrigation tunnel excavation. The existing research results mainly focus on the effect analysis of surface grouting, and these measures have good effect on controlling surface settlement, but poor effect on controlling tunnel surrounding rock vault settlement and horizontal convergent deformation.…”

Section: Introductionmentioning

confidence: 99%

Seepage in Water-Rich Loess Tunnel Excavating Process and Grouting Control Effect

Wei

Yan-peng

2021

Geofluids

View full text Add to dashboard Cite

The tunnel passing through the loess stratum with high moisture content can easily lead to the seepage and mud burst accident and the instability and collapse of the tunnel face. Under the condition of high groundwater level, the seepage situation is more complicated, it is difficult to control the groundwater seepage, and the excavation progress is very slow. In order to solve the various disasters when the tunnel passes through the water-rich loess stratum, taking a water-rich loess tunnel in Gansu Province as an example, the method of comprehensive prevention and control of seepage and mud inrushing disaster by basement grouting and curtain grouting was introduced. Firstly, the basic situation of the Yulinzi tunnel is introduced, including site conditions, seepage collapse accident, and its cause analysis. On this basis, the design and construction methods of basement grouting and curtain grouting are introduced, and the effect of grouting reinforcement is evaluated in detail through on-site monitoring. The results show that the basement grouting and curtain grouting can effectively control the deformation of surrounding rock and the surface settlement, the decrease of the deformation of surrounding rock can reach 36%-71%, and the decrease of the surface settlement can reach 55%. After grouting, the deformation of the surface and surrounding rock can be controlled within the allowable value in the code. Grouting plus solid can effectively block the seepage of groundwater and prevent the surface cracks, water gushing, mud gushing, collapse, and other disasters in the process of tunnel excavation. It can be seen that the basement grouting combined with curtain grouting technology has a good reinforcement effect, which has significant engineering value for quickly and efficiently passing through high moisture content loess strata.

show abstract

“…Considering these advantages of grouting, some traditional grouting methods (ie, pregrouting and delayed grouting) were applied to roadway reinforcement . However, it should point out that the application of conventional grouting approaches in the coal roadway was limited due to the special circumstance of soft coal mass, that is, poor groutability and small diffusion radius …”

Section: Introductionmentioning

confidence: 99%

Investigation on jet grouting support strategy for controlling time‐dependent deformation in the roadway

Sun

Zhang

2020

Energy Science & Engineering

View full text Add to dashboard Cite

The efficiency of coal mining is seriously affected by roadway stability, as large time‐dependent deformation of roadway frequently occurs and needs to be maintained several times during its service life. Such rheological deformation was common in soft coal mass at Huaibei coalfield in China. To address this issue, in this study, the time‐dependent deformation of the soft coal roadway was analyzed and a new Jet Grouting (JG) technique was presented for controlling deformation. The time‐dependent deformation of the soft coal roadway was numerically simulated and validated. Based on the field test results and the verified model, a JG support model was established to examine its effect on roadway deformation. The JG support system can reduce the horizontal and vertical displacement of the roadway effectively and constrain the time‐dependent deformation of coal mass. The deformation rate and stabilization time of roadway decreased significantly by comparison with conventional support. This work presented a promising JG support scheme for controlling the time‐dependent deformation in the roadway in deep underground mine, which can greatly promote the JG design and application.

show abstract

Grouting a tunnel cave-in from the surface: a case study on Kurtkulağı irrigation tunnel, Turkey

Cited by 23 publications

References 6 publications

Analysis of Instability Mechanism and Induced Cause of Urban Pavement in Xining City, China

Analysis of Instability Mechanism and Induced Cause of Urban Pavement in Xining City, China

Seepage in Water-Rich Loess Tunnel Excavating Process and Grouting Control Effect

Investigation on jet grouting support strategy for controlling time‐dependent deformation in the roadway

Contact Info

Product

Resources

About